* commit '2113f325392b0ad9388e5a08977ab0056628ce0b': First commit for ListViewDraggingAnimation.
This commit is contained in:
Daniel Olshansky
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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.example.android.listviewdragginganimation"
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android:versionCode="1"
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android:versionName="1.0">
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<uses-sdk android:minSdkVersion="11"
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android:targetSdkVersion="17"/>
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<application android:label="@string/app_name" android:icon="@drawable/ic_launcher">
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<activity android:name=".ListViewDraggingAnimation"
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android:label="@string/app_name">
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<intent-filter>
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<action android:name="android.intent.action.MAIN"/>
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<category android:name="android.intent.category.LAUNCHER"/>
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</intent-filter>
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</activity>
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</application>
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</manifest>
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<!-- Copyright (C) 2013 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:id="@+id/mainLayout"
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xmlns:tools="http://schemas.android.com/tools"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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tools:context=".ListViewAnimations" >
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<com.example.android.listviewdragginganimation.DynamicListView
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android:id="@+id/listview"
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android:background="#0000"
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android:layout_width="match_parent"
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android:layout_height="wrap_content" />
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</RelativeLayout>
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<!-- Copyright (C) 2013 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<TextView xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:background="#FFF"
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android:textSize="@dimen/list_text_size"
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android:gravity="center_vertical"
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android:paddingLeft="15dp"
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android:paddingRight="15dp"
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android:minHeight="@dimen/list_item_height"
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android:textColor="#000000"
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/>
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@@ -0,0 +1,20 @@
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<!-- Copyright (C) 2013 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<resources>
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<dimen name="list_text_size">16sp</dimen>
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<dimen name="list_item_height">48dip</dimen>
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</resources>
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@@ -0,0 +1,19 @@
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<!-- Copyright (C) 2013 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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|
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http://www.apache.org/licenses/LICENSE-2.0
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|
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Unless required by applicable law or agreed to in writing, software
|
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distributed under the License is distributed on an "AS IS" BASIS,
|
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
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See the License for the specific language governing permissions and
|
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limitations under the License.
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-->
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<resources>
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<string name="app_name">ListViewDraggingAnimation</string>
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</resources>
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@@ -0,0 +1,154 @@
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/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.android.listviewdragginganimation;
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public class Cheeses {
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public static final String[] sCheeseStrings = {
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"Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam", "Abondance", "Ackawi",
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"Acorn", "Adelost", "Affidelice au Chablis", "Afuega'l Pitu", "Airag", "Airedale",
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"Aisy Cendre", "Allgauer Emmentaler", "Alverca", "Ambert", "American Cheese",
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"Ami du Chambertin", "Anejo Enchilado", "Anneau du Vic-Bilh", "Anthoriro", "Appenzell",
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"Aragon", "Ardi Gasna", "Ardrahan", "Armenian String", "Aromes au Gene de Marc",
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"Asadero", "Asiago", "Aubisque Pyrenees", "Autun", "Avaxtskyr", "Baby Swiss",
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"Babybel", "Baguette Laonnaise", "Bakers", "Baladi", "Balaton", "Bandal", "Banon",
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"Barry's Bay Cheddar", "Basing", "Basket Cheese", "Bath Cheese", "Bavarian Bergkase",
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"Baylough", "Beaufort", "Beauvoorde", "Beenleigh Blue", "Beer Cheese", "Bel Paese",
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"Bergader", "Bergere Bleue", "Berkswell", "Beyaz Peynir", "Bierkase", "Bishop Kennedy",
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"Blarney", "Bleu d'Auvergne", "Bleu de Gex", "Bleu de Laqueuille",
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"Bleu de Septmoncel", "Bleu Des Causses", "Blue", "Blue Castello", "Blue Rathgore",
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"Blue Vein (Australian)", "Blue Vein Cheeses", "Bocconcini", "Bocconcini (Australian)",
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"Boeren Leidenkaas", "Bonchester", "Bosworth", "Bougon", "Boule Du Roves",
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"Boulette d'Avesnes", "Boursault", "Boursin", "Bouyssou", "Bra", "Braudostur",
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"Breakfast Cheese", "Brebis du Lavort", "Brebis du Lochois", "Brebis du Puyfaucon",
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"Bresse Bleu", "Brick", "Brie", "Brie de Meaux", "Brie de Melun", "Brillat-Savarin",
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"Brin", "Brin d' Amour", "Brin d'Amour", "Brinza (Burduf Brinza)",
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"Briquette de Brebis", "Briquette du Forez", "Broccio", "Broccio Demi-Affine",
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"Brousse du Rove", "Bruder Basil", "Brusselae Kaas (Fromage de Bruxelles)", "Bryndza",
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"Buchette d'Anjou", "Buffalo", "Burgos", "Butte", "Butterkase", "Button (Innes)",
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"Buxton Blue", "Cabecou", "Caboc", "Cabrales", "Cachaille", "Caciocavallo", "Caciotta",
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"Caerphilly", "Cairnsmore", "Calenzana", "Cambazola", "Camembert de Normandie",
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"Canadian Cheddar", "Canestrato", "Cantal", "Caprice des Dieux", "Capricorn Goat",
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"Capriole Banon", "Carre de l'Est", "Casciotta di Urbino", "Cashel Blue", "Castellano",
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"Castelleno", "Castelmagno", "Castelo Branco", "Castigliano", "Cathelain",
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"Celtic Promise", "Cendre d'Olivet", "Cerney", "Chabichou", "Chabichou du Poitou",
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"Chabis de Gatine", "Chaource", "Charolais", "Chaumes", "Cheddar",
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"Cheddar Clothbound", "Cheshire", "Chevres", "Chevrotin des Aravis", "Chontaleno",
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"Civray", "Coeur de Camembert au Calvados", "Coeur de Chevre", "Colby", "Cold Pack",
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"Comte", "Coolea", "Cooleney", "Coquetdale", "Corleggy", "Cornish Pepper",
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"Cotherstone", "Cotija", "Cottage Cheese", "Cottage Cheese (Australian)",
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"Cougar Gold", "Coulommiers", "Coverdale", "Crayeux de Roncq", "Cream Cheese",
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"Cream Havarti", "Crema Agria", "Crema Mexicana", "Creme Fraiche", "Crescenza",
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"Croghan", "Crottin de Chavignol", "Crottin du Chavignol", "Crowdie", "Crowley",
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"Cuajada", "Curd", "Cure Nantais", "Curworthy", "Cwmtawe Pecorino",
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"Cypress Grove Chevre", "Danablu (Danish Blue)", "Danbo", "Danish Fontina",
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"Daralagjazsky", "Dauphin", "Delice des Fiouves", "Denhany Dorset Drum", "Derby",
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"Dessertnyj Belyj", "Devon Blue", "Devon Garland", "Dolcelatte", "Doolin",
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"Doppelrhamstufel", "Dorset Blue Vinney", "Double Gloucester", "Double Worcester",
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"Dreux a la Feuille", "Dry Jack", "Duddleswell", "Dunbarra", "Dunlop", "Dunsyre Blue",
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"Duroblando", "Durrus", "Dutch Mimolette (Commissiekaas)", "Edam", "Edelpilz",
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"Emental Grand Cru", "Emlett", "Emmental", "Epoisses de Bourgogne", "Esbareich",
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"Esrom", "Etorki", "Evansdale Farmhouse Brie", "Evora De L'Alentejo", "Exmoor Blue",
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"Explorateur", "Feta", "Feta (Australian)", "Figue", "Filetta", "Fin-de-Siecle",
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"Finlandia Swiss", "Finn", "Fiore Sardo", "Fleur du Maquis", "Flor de Guia",
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"Flower Marie", "Folded", "Folded cheese with mint", "Fondant de Brebis",
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"Fontainebleau", "Fontal", "Fontina Val d'Aosta", "Formaggio di capra", "Fougerus",
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"Four Herb Gouda", "Fourme d' Ambert", "Fourme de Haute Loire", "Fourme de Montbrison",
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"Fresh Jack", "Fresh Mozzarella", "Fresh Ricotta", "Fresh Truffles", "Fribourgeois",
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"Friesekaas", "Friesian", "Friesla", "Frinault", "Fromage a Raclette", "Fromage Corse",
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"Fromage de Montagne de Savoie", "Fromage Frais", "Fruit Cream Cheese",
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"Frying Cheese", "Fynbo", "Gabriel", "Galette du Paludier", "Galette Lyonnaise",
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"Galloway Goat's Milk Gems", "Gammelost", "Gaperon a l'Ail", "Garrotxa", "Gastanberra",
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"Geitost", "Gippsland Blue", "Gjetost", "Gloucester", "Golden Cross", "Gorgonzola",
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"Gornyaltajski", "Gospel Green", "Gouda", "Goutu", "Gowrie", "Grabetto", "Graddost",
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"Grafton Village Cheddar", "Grana", "Grana Padano", "Grand Vatel",
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"Grataron d' Areches", "Gratte-Paille", "Graviera", "Greuilh", "Greve",
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"Gris de Lille", "Gruyere", "Gubbeen", "Guerbigny", "Halloumi",
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"Halloumy (Australian)", "Haloumi-Style Cheese", "Harbourne Blue", "Havarti",
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"Heidi Gruyere", "Hereford Hop", "Herrgardsost", "Herriot Farmhouse", "Herve",
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"Hipi Iti", "Hubbardston Blue Cow", "Hushallsost", "Iberico", "Idaho Goatster",
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"Idiazabal", "Il Boschetto al Tartufo", "Ile d'Yeu", "Isle of Mull", "Jarlsberg",
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"Jermi Tortes", "Jibneh Arabieh", "Jindi Brie", "Jubilee Blue", "Juustoleipa",
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"Kadchgall", "Kaseri", "Kashta", "Kefalotyri", "Kenafa", "Kernhem", "Kervella Affine",
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"Kikorangi", "King Island Cape Wickham Brie", "King River Gold", "Klosterkaese",
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"Knockalara", "Kugelkase", "L'Aveyronnais", "L'Ecir de l'Aubrac", "La Taupiniere",
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"La Vache Qui Rit", "Laguiole", "Lairobell", "Lajta", "Lanark Blue", "Lancashire",
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"Langres", "Lappi", "Laruns", "Lavistown", "Le Brin", "Le Fium Orbo", "Le Lacandou",
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"Le Roule", "Leafield", "Lebbene", "Leerdammer", "Leicester", "Leyden", "Limburger",
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"Lincolnshire Poacher", "Lingot Saint Bousquet d'Orb", "Liptauer", "Little Rydings",
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"Livarot", "Llanboidy", "Llanglofan Farmhouse", "Loch Arthur Farmhouse",
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"Loddiswell Avondale", "Longhorn", "Lou Palou", "Lou Pevre", "Lyonnais", "Maasdam",
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"Macconais", "Mahoe Aged Gouda", "Mahon", "Malvern", "Mamirolle", "Manchego",
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"Manouri", "Manur", "Marble Cheddar", "Marbled Cheeses", "Maredsous", "Margotin",
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"Maribo", "Maroilles", "Mascares", "Mascarpone", "Mascarpone (Australian)",
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"Mascarpone Torta", "Matocq", "Maytag Blue", "Meira", "Menallack Farmhouse",
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"Menonita", "Meredith Blue", "Mesost", "Metton (Cancoillotte)", "Meyer Vintage Gouda",
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"Mihalic Peynir", "Milleens", "Mimolette", "Mine-Gabhar", "Mini Baby Bells", "Mixte",
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"Molbo", "Monastery Cheeses", "Mondseer", "Mont D'or Lyonnais", "Montasio",
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"Monterey Jack", "Monterey Jack Dry", "Morbier", "Morbier Cru de Montagne",
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"Mothais a la Feuille", "Mozzarella", "Mozzarella (Australian)",
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"Mozzarella di Bufala", "Mozzarella Fresh, in water", "Mozzarella Rolls", "Munster",
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"Murol", "Mycella", "Myzithra", "Naboulsi", "Nantais", "Neufchatel",
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"Neufchatel (Australian)", "Niolo", "Nokkelost", "Northumberland", "Oaxaca",
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"Olde York", "Olivet au Foin", "Olivet Bleu", "Olivet Cendre",
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"Orkney Extra Mature Cheddar", "Orla", "Oschtjepka", "Ossau Fermier", "Ossau-Iraty",
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"Oszczypek", "Oxford Blue", "P'tit Berrichon", "Palet de Babligny", "Paneer", "Panela",
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"Pannerone", "Pant ys Gawn", "Parmesan (Parmigiano)", "Parmigiano Reggiano",
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"Pas de l'Escalette", "Passendale", "Pasteurized Processed", "Pate de Fromage",
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"Patefine Fort", "Pave d'Affinois", "Pave d'Auge", "Pave de Chirac", "Pave du Berry",
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"Pecorino", "Pecorino in Walnut Leaves", "Pecorino Romano", "Peekskill Pyramid",
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"Pelardon des Cevennes", "Pelardon des Corbieres", "Penamellera", "Penbryn",
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"Pencarreg", "Perail de Brebis", "Petit Morin", "Petit Pardou", "Petit-Suisse",
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"Picodon de Chevre", "Picos de Europa", "Piora", "Pithtviers au Foin",
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"Plateau de Herve", "Plymouth Cheese", "Podhalanski", "Poivre d'Ane", "Polkolbin",
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"Pont l'Eveque", "Port Nicholson", "Port-Salut", "Postel", "Pouligny-Saint-Pierre",
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"Pourly", "Prastost", "Pressato", "Prince-Jean", "Processed Cheddar", "Provolone",
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"Provolone (Australian)", "Pyengana Cheddar", "Pyramide", "Quark",
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"Quark (Australian)", "Quartirolo Lombardo", "Quatre-Vents", "Quercy Petit",
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"Queso Blanco", "Queso Blanco con Frutas --Pina y Mango", "Queso de Murcia",
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"Queso del Montsec", "Queso del Tietar", "Queso Fresco", "Queso Fresco (Adobera)",
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"Queso Iberico", "Queso Jalapeno", "Queso Majorero", "Queso Media Luna",
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"Queso Para Frier", "Queso Quesadilla", "Rabacal", "Raclette", "Ragusano", "Raschera",
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"Reblochon", "Red Leicester", "Regal de la Dombes", "Reggianito", "Remedou",
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"Requeson", "Richelieu", "Ricotta", "Ricotta (Australian)", "Ricotta Salata", "Ridder",
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"Rigotte", "Rocamadour", "Rollot", "Romano", "Romans Part Dieu", "Roncal", "Roquefort",
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"Roule", "Rouleau De Beaulieu", "Royalp Tilsit", "Rubens", "Rustinu", "Saaland Pfarr",
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"Saanenkaese", "Saga", "Sage Derby", "Sainte Maure", "Saint-Marcellin",
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"Saint-Nectaire", "Saint-Paulin", "Salers", "Samso", "San Simon", "Sancerre",
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"Sap Sago", "Sardo", "Sardo Egyptian", "Sbrinz", "Scamorza", "Schabzieger", "Schloss",
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"Selles sur Cher", "Selva", "Serat", "Seriously Strong Cheddar", "Serra da Estrela",
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"Sharpam", "Shelburne Cheddar", "Shropshire Blue", "Siraz", "Sirene", "Smoked Gouda",
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"Somerset Brie", "Sonoma Jack", "Sottocenare al Tartufo", "Soumaintrain",
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"Sourire Lozerien", "Spenwood", "Sraffordshire Organic", "St. Agur Blue Cheese",
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"Stilton", "Stinking Bishop", "String", "Sussex Slipcote", "Sveciaost", "Swaledale",
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"Sweet Style Swiss", "Swiss", "Syrian (Armenian String)", "Tala", "Taleggio", "Tamie",
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"Tasmania Highland Chevre Log", "Taupiniere", "Teifi", "Telemea", "Testouri",
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"Tete de Moine", "Tetilla", "Texas Goat Cheese", "Tibet", "Tillamook Cheddar",
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"Tilsit", "Timboon Brie", "Toma", "Tomme Brulee", "Tomme d'Abondance",
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"Tomme de Chevre", "Tomme de Romans", "Tomme de Savoie", "Tomme des Chouans", "Tommes",
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"Torta del Casar", "Toscanello", "Touree de L'Aubier", "Tourmalet",
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"Trappe (Veritable)", "Trois Cornes De Vendee", "Tronchon", "Trou du Cru", "Truffe",
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"Tupi", "Turunmaa", "Tymsboro", "Tyn Grug", "Tyning", "Ubriaco", "Ulloa",
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"Vacherin-Fribourgeois", "Valencay", "Vasterbottenost", "Venaco", "Vendomois",
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"Vieux Corse", "Vignotte", "Vulscombe", "Waimata Farmhouse Blue",
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"Washed Rind Cheese (Australian)", "Waterloo", "Weichkaese", "Wellington",
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"Wensleydale", "White Stilton", "Whitestone Farmhouse", "Wigmore", "Woodside Cabecou",
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"Xanadu", "Xynotyro", "Yarg Cornish", "Yarra Valley Pyramid", "Yorkshire Blue",
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"Zamorano", "Zanetti Grana Padano", "Zanetti Parmigiano Reggiano"
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};
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||||
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}
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@@ -0,0 +1,592 @@
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/*
|
||||
* Copyright (C) 2013 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package com.example.android.listviewdragginganimation;
|
||||
|
||||
import android.animation.Animator;
|
||||
import android.animation.AnimatorListenerAdapter;
|
||||
import android.animation.ObjectAnimator;
|
||||
import android.animation.TypeEvaluator;
|
||||
import android.animation.ValueAnimator;
|
||||
import android.content.Context;
|
||||
import android.graphics.Bitmap;
|
||||
import android.graphics.Canvas;
|
||||
import android.graphics.Color;
|
||||
import android.graphics.Paint;
|
||||
import android.graphics.Rect;
|
||||
import android.graphics.drawable.BitmapDrawable;
|
||||
import android.util.AttributeSet;
|
||||
import android.util.DisplayMetrics;
|
||||
import android.view.MotionEvent;
|
||||
import android.view.View;
|
||||
import android.view.ViewTreeObserver;
|
||||
import android.widget.AbsListView;
|
||||
import android.widget.AdapterView;
|
||||
import android.widget.BaseAdapter;
|
||||
import android.widget.ListView;
|
||||
|
||||
import java.util.ArrayList;
|
||||
|
||||
/**
|
||||
* The dynamic listview is an extension of listview that supports cell dragging
|
||||
* and swapping.
|
||||
*
|
||||
* This layout is in charge of positioning the hover cell in the correct location
|
||||
* on the screen in response to user touch events. It uses the position of the
|
||||
* hover cell to determine when two cells should be swapped. If two cells should
|
||||
* be swapped, all the corresponding data set and layout changes are handled here.
|
||||
*
|
||||
* If no cell is selected, all the touch events are passed down to the listview
|
||||
* and behave normally. If one of the items in the listview experiences a
|
||||
* long press event, the contents of its current visible state are captured as
|
||||
* a bitmap and its visibility is set to INVISIBLE. A hover cell is then created and
|
||||
* added to this layout as an overlaying BitmapDrawable above the listview. Once the
|
||||
* hover cell is translated some distance to signify an item swap, a data set change
|
||||
* accompanied by animation takes place. When the user releases the hover cell,
|
||||
* it animates into its corresponding position in the listview.
|
||||
*
|
||||
* When the hover cell is either above or below the bounds of the listview, this
|
||||
* listview also scrolls on its own so as to reveal additional content.
|
||||
*/
|
||||
public class DynamicListView extends ListView {
|
||||
|
||||
private final int SMOOTH_SCROLL_AMOUNT_AT_EDGE = 15;
|
||||
private final int MOVE_DURATION = 150;
|
||||
private final int LINE_THICKNESS = 15;
|
||||
|
||||
public ArrayList<String> mCheeseList;
|
||||
|
||||
private int mLastEventY = -1;
|
||||
|
||||
private int mDownY = -1;
|
||||
private int mDownX = -1;
|
||||
|
||||
private int mTotalOffset = 0;
|
||||
|
||||
private boolean mCellIsMobile = false;
|
||||
private boolean mIsMobileScrolling = false;
|
||||
private int mSmoothScrollAmountAtEdge = 0;
|
||||
|
||||
private final int INVALID_ID = -1;
|
||||
private long mAboveItemId = INVALID_ID;
|
||||
private long mMobileItemId = INVALID_ID;
|
||||
private long mBelowItemId = INVALID_ID;
|
||||
|
||||
private BitmapDrawable mHoverCell;
|
||||
private Rect mHoverCellCurrentBounds;
|
||||
private Rect mHoverCellOriginalBounds;
|
||||
|
||||
private final int INVALID_POINTER_ID = -1;
|
||||
private int mActivePointerId = INVALID_POINTER_ID;
|
||||
|
||||
private boolean mIsWaitingForScrollFinish = false;
|
||||
private int mScrollState = OnScrollListener.SCROLL_STATE_IDLE;
|
||||
|
||||
public DynamicListView(Context context) {
|
||||
super(context);
|
||||
init(context);
|
||||
}
|
||||
|
||||
public DynamicListView(Context context, AttributeSet attrs, int defStyle) {
|
||||
super(context, attrs, defStyle);
|
||||
init(context);
|
||||
}
|
||||
|
||||
public DynamicListView(Context context, AttributeSet attrs) {
|
||||
super(context, attrs);
|
||||
init(context);
|
||||
}
|
||||
|
||||
public void init(Context context) {
|
||||
setOnItemLongClickListener(mOnItemLongClickListener);
|
||||
setOnScrollListener(mScrollListener);
|
||||
DisplayMetrics metrics = context.getResources().getDisplayMetrics();
|
||||
mSmoothScrollAmountAtEdge = (int)(SMOOTH_SCROLL_AMOUNT_AT_EDGE / metrics.density);
|
||||
}
|
||||
|
||||
/**
|
||||
* Listens for long clicks on any items in the listview. When a cell has
|
||||
* been selected, the hover cell is created and set up.
|
||||
*/
|
||||
private AdapterView.OnItemLongClickListener mOnItemLongClickListener =
|
||||
new AdapterView.OnItemLongClickListener() {
|
||||
public boolean onItemLongClick(AdapterView<?> arg0, View arg1, int pos, long id) {
|
||||
mTotalOffset = 0;
|
||||
|
||||
int position = pointToPosition(mDownX, mDownY);
|
||||
int itemNum = position - getFirstVisiblePosition();
|
||||
|
||||
View selectedView = getChildAt(itemNum);
|
||||
mMobileItemId = getAdapter().getItemId(position);
|
||||
mHoverCell = getAndAddHoverView(selectedView);
|
||||
selectedView.setVisibility(INVISIBLE);
|
||||
|
||||
mCellIsMobile = true;
|
||||
|
||||
updateNeighborViewsForID(mMobileItemId);
|
||||
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* Creates the hover cell with the appropriate bitmap and of appropriate
|
||||
* size. The hover cell's BitmapDrawable is drawn on top of the bitmap every
|
||||
* single time an invalidate call is made.
|
||||
*/
|
||||
private BitmapDrawable getAndAddHoverView(View v) {
|
||||
|
||||
int w = v.getWidth();
|
||||
int h = v.getHeight();
|
||||
int top = v.getTop();
|
||||
int left = v.getLeft();
|
||||
|
||||
Bitmap b = getBitmapWithBorder(v);
|
||||
|
||||
BitmapDrawable drawable = new BitmapDrawable(getResources(), b);
|
||||
|
||||
mHoverCellOriginalBounds = new Rect(left, top, left + w, top + h);
|
||||
mHoverCellCurrentBounds = new Rect(mHoverCellOriginalBounds);
|
||||
|
||||
drawable.setBounds(mHoverCellCurrentBounds);
|
||||
|
||||
return drawable;
|
||||
}
|
||||
|
||||
/** Draws a black border over the screenshot of the view passed in. */
|
||||
private Bitmap getBitmapWithBorder(View v) {
|
||||
Bitmap bitmap = getBitmapFromView(v);
|
||||
Canvas can = new Canvas(bitmap);
|
||||
|
||||
Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
|
||||
|
||||
Paint paint = new Paint();
|
||||
paint.setStyle(Paint.Style.STROKE);
|
||||
paint.setStrokeWidth(LINE_THICKNESS);
|
||||
paint.setColor(Color.BLACK);
|
||||
|
||||
can.drawBitmap(bitmap, 0, 0, null);
|
||||
can.drawRect(rect, paint);
|
||||
|
||||
return bitmap;
|
||||
}
|
||||
|
||||
/** Returns a bitmap showing a screenshot of the view passed in. */
|
||||
private Bitmap getBitmapFromView(View v) {
|
||||
Bitmap bitmap = Bitmap.createBitmap(v.getWidth(), v.getHeight(), Bitmap.Config.ARGB_8888);
|
||||
Canvas canvas = new Canvas (bitmap);
|
||||
v.draw(canvas);
|
||||
return bitmap;
|
||||
}
|
||||
|
||||
/**
|
||||
* Stores a reference to the views above and below the item currently
|
||||
* corresponding to the hover cell. It is important to note that if this
|
||||
* item is either at the top or bottom of the list, mAboveItemId or mBelowItemId
|
||||
* may be invalid.
|
||||
*/
|
||||
private void updateNeighborViewsForID(long itemID) {
|
||||
int position = getPositionForID(itemID);
|
||||
StableArrayAdapter adapter = ((StableArrayAdapter)getAdapter());
|
||||
mAboveItemId = adapter.getItemId(position - 1);
|
||||
mBelowItemId = adapter.getItemId(position + 1);
|
||||
}
|
||||
|
||||
/** Retrieves the view in the list corresponding to itemID */
|
||||
public View getViewForID (long itemID) {
|
||||
int firstVisiblePosition = getFirstVisiblePosition();
|
||||
StableArrayAdapter adapter = ((StableArrayAdapter)getAdapter());
|
||||
for(int i = 0; i < getChildCount(); i++) {
|
||||
View v = getChildAt(i);
|
||||
int position = firstVisiblePosition + i;
|
||||
long id = adapter.getItemId(position);
|
||||
if (id == itemID) {
|
||||
return v;
|
||||
}
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
/** Retrieves the position in the list corresponding to itemID */
|
||||
public int getPositionForID (long itemID) {
|
||||
View v = getViewForID(itemID);
|
||||
if (v == null) {
|
||||
return -1;
|
||||
} else {
|
||||
return getPositionForView(v);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* dispatchDraw gets invoked when all the child views are about to be drawn.
|
||||
* By overriding this method, the hover cell (BitmapDrawable) can be drawn
|
||||
* over the listview's items whenever the listview is redrawn.
|
||||
*/
|
||||
@Override
|
||||
protected void dispatchDraw(Canvas canvas) {
|
||||
super.dispatchDraw(canvas);
|
||||
if (mHoverCell != null) {
|
||||
mHoverCell.draw(canvas);
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean onTouchEvent (MotionEvent event) {
|
||||
|
||||
switch (event.getAction() & MotionEvent.ACTION_MASK) {
|
||||
case MotionEvent.ACTION_DOWN:
|
||||
mDownX = (int)event.getX();
|
||||
mDownY = (int)event.getY();
|
||||
mActivePointerId = event.getPointerId(0);
|
||||
break;
|
||||
case MotionEvent.ACTION_MOVE:
|
||||
if (mActivePointerId == INVALID_POINTER_ID) {
|
||||
break;
|
||||
}
|
||||
|
||||
int pointerIndex = event.findPointerIndex(mActivePointerId);
|
||||
|
||||
mLastEventY = (int) event.getY(pointerIndex);
|
||||
int deltaY = mLastEventY - mDownY;
|
||||
|
||||
if (mCellIsMobile) {
|
||||
mHoverCellCurrentBounds.offsetTo(mHoverCellOriginalBounds.left,
|
||||
mHoverCellOriginalBounds.top + deltaY + mTotalOffset);
|
||||
mHoverCell.setBounds(mHoverCellCurrentBounds);
|
||||
invalidate();
|
||||
|
||||
handleCellSwitch();
|
||||
|
||||
mIsMobileScrolling = false;
|
||||
handleMobileCellScroll();
|
||||
|
||||
return false;
|
||||
}
|
||||
break;
|
||||
case MotionEvent.ACTION_UP:
|
||||
touchEventsEnded();
|
||||
break;
|
||||
case MotionEvent.ACTION_CANCEL:
|
||||
touchEventsCancelled();
|
||||
break;
|
||||
case MotionEvent.ACTION_POINTER_UP:
|
||||
/* If a multitouch event took place and the original touch dictating
|
||||
* the movement of the hover cell has ended, then the dragging event
|
||||
* ends and the hover cell is animated to its corresponding position
|
||||
* in the listview. */
|
||||
pointerIndex = (event.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK) >>
|
||||
MotionEvent.ACTION_POINTER_INDEX_SHIFT;
|
||||
final int pointerId = event.getPointerId(pointerIndex);
|
||||
if (pointerId == mActivePointerId) {
|
||||
touchEventsEnded();
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return super.onTouchEvent(event);
|
||||
}
|
||||
|
||||
/**
|
||||
* This method determines whether the hover cell has been shifted far enough
|
||||
* to invoke a cell swap. If so, then the respective cell swap candidate is
|
||||
* determined and the data set is changed. Upon posting a notification of the
|
||||
* data set change, a layout is invoked to place the cells in the right place.
|
||||
* Using a ViewTreeObserver and a corresponding OnPreDrawListener, we can
|
||||
* offset the cell being swapped to where it previously was and then animate it to
|
||||
* its new position.
|
||||
*/
|
||||
private void handleCellSwitch() {
|
||||
final int deltaY = mLastEventY - mDownY;
|
||||
int deltaYTotal = mHoverCellOriginalBounds.top + mTotalOffset + deltaY;
|
||||
|
||||
View belowView = getViewForID(mBelowItemId);
|
||||
View mobileView = getViewForID(mMobileItemId);
|
||||
View aboveView = getViewForID(mAboveItemId);
|
||||
|
||||
boolean isBelow = (belowView != null) && (deltaYTotal > belowView.getTop());
|
||||
boolean isAbove = (aboveView != null) && (deltaYTotal < aboveView.getTop());
|
||||
|
||||
if (isBelow || isAbove) {
|
||||
|
||||
final long switchItemID = isBelow ? mBelowItemId : mAboveItemId;
|
||||
View switchView = isBelow ? belowView : aboveView;
|
||||
final int originalItem = getPositionForView(mobileView);
|
||||
|
||||
if (switchView == null) {
|
||||
updateNeighborViewsForID(mMobileItemId);
|
||||
return;
|
||||
}
|
||||
|
||||
swapElements(mCheeseList, originalItem, getPositionForView(switchView));
|
||||
|
||||
((BaseAdapter) getAdapter()).notifyDataSetChanged();
|
||||
|
||||
mDownY = mLastEventY;
|
||||
|
||||
final int switchViewStartTop = switchView.getTop();
|
||||
|
||||
mobileView.setVisibility(View.VISIBLE);
|
||||
switchView.setVisibility(View.INVISIBLE);
|
||||
|
||||
updateNeighborViewsForID(mMobileItemId);
|
||||
|
||||
final ViewTreeObserver observer = getViewTreeObserver();
|
||||
observer.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
|
||||
public boolean onPreDraw() {
|
||||
observer.removeOnPreDrawListener(this);
|
||||
|
||||
View switchView = getViewForID(switchItemID);
|
||||
|
||||
mTotalOffset += deltaY;
|
||||
|
||||
int switchViewNewTop = switchView.getTop();
|
||||
int delta = switchViewStartTop - switchViewNewTop;
|
||||
|
||||
switchView.setTranslationY(delta);
|
||||
|
||||
ObjectAnimator animator = ObjectAnimator.ofFloat(switchView,
|
||||
View.TRANSLATION_Y, 0);
|
||||
animator.setDuration(MOVE_DURATION);
|
||||
animator.start();
|
||||
|
||||
return true;
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
private void swapElements(ArrayList arrayList, int indexOne, int indexTwo) {
|
||||
Object temp = arrayList.get(indexOne);
|
||||
arrayList.set(indexOne, arrayList.get(indexTwo));
|
||||
arrayList.set(indexTwo, temp);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Resets all the appropriate fields to a default state while also animating
|
||||
* the hover cell back to its correct location.
|
||||
*/
|
||||
private void touchEventsEnded () {
|
||||
final View mobileView = getViewForID(mMobileItemId);
|
||||
if (mCellIsMobile|| mIsWaitingForScrollFinish) {
|
||||
mCellIsMobile = false;
|
||||
mIsWaitingForScrollFinish = false;
|
||||
mIsMobileScrolling = false;
|
||||
mActivePointerId = INVALID_POINTER_ID;
|
||||
|
||||
// If the autoscroller has not completed scrolling, we need to wait for it to
|
||||
// finish in order to determine the final location of where the hover cell
|
||||
// should be animated to.
|
||||
if (mScrollState != OnScrollListener.SCROLL_STATE_IDLE) {
|
||||
mIsWaitingForScrollFinish = true;
|
||||
return;
|
||||
}
|
||||
|
||||
mHoverCellCurrentBounds.offsetTo(mHoverCellOriginalBounds.left, mobileView.getTop());
|
||||
|
||||
ObjectAnimator hoverViewAnimator = ObjectAnimator.ofObject(mHoverCell, "bounds",
|
||||
sBoundEvaluator, mHoverCellCurrentBounds);
|
||||
hoverViewAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
|
||||
@Override
|
||||
public void onAnimationUpdate(ValueAnimator valueAnimator) {
|
||||
invalidate();
|
||||
}
|
||||
});
|
||||
hoverViewAnimator.addListener(new AnimatorListenerAdapter() {
|
||||
@Override
|
||||
public void onAnimationStart(Animator animation) {
|
||||
setEnabled(false);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onAnimationEnd(Animator animation) {
|
||||
mAboveItemId = INVALID_ID;
|
||||
mMobileItemId = INVALID_ID;
|
||||
mBelowItemId = INVALID_ID;
|
||||
mobileView.setVisibility(VISIBLE);
|
||||
mHoverCell = null;
|
||||
setEnabled(true);
|
||||
invalidate();
|
||||
}
|
||||
});
|
||||
hoverViewAnimator.start();
|
||||
} else {
|
||||
touchEventsCancelled();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Resets all the appropriate fields to a default state.
|
||||
*/
|
||||
private void touchEventsCancelled () {
|
||||
View mobileView = getViewForID(mMobileItemId);
|
||||
if (mCellIsMobile) {
|
||||
mAboveItemId = INVALID_ID;
|
||||
mMobileItemId = INVALID_ID;
|
||||
mBelowItemId = INVALID_ID;
|
||||
mobileView.setVisibility(VISIBLE);
|
||||
mHoverCell = null;
|
||||
invalidate();
|
||||
}
|
||||
mCellIsMobile = false;
|
||||
mIsMobileScrolling = false;
|
||||
mActivePointerId = INVALID_POINTER_ID;
|
||||
}
|
||||
|
||||
/**
|
||||
* This TypeEvaluator is used to animate the BitmapDrawable back to its
|
||||
* final location when the user lifts his finger by modifying the
|
||||
* BitmapDrawable's bounds.
|
||||
*/
|
||||
private final static TypeEvaluator<Rect> sBoundEvaluator = new TypeEvaluator<Rect>() {
|
||||
public Rect evaluate(float fraction, Rect startValue, Rect endValue) {
|
||||
return new Rect(interpolate(startValue.left, endValue.left, fraction),
|
||||
interpolate(startValue.top, endValue.top, fraction),
|
||||
interpolate(startValue.right, endValue.right, fraction),
|
||||
interpolate(startValue.bottom, endValue.bottom, fraction));
|
||||
}
|
||||
|
||||
public int interpolate(int start, int end, float fraction) {
|
||||
return (int)(start + fraction * (end - start));
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* Determines whether this listview is in a scrolling state invoked
|
||||
* by the fact that the hover cell is out of the bounds of the listview;
|
||||
*/
|
||||
private void handleMobileCellScroll() {
|
||||
mIsMobileScrolling = handleMobileCellScroll(mHoverCellCurrentBounds);
|
||||
}
|
||||
|
||||
/**
|
||||
* This method is in charge of determining if the hover cell is above
|
||||
* or below the bounds of the listview. If so, the listview does an appropriate
|
||||
* upward or downward smooth scroll so as to reveal new items.
|
||||
*/
|
||||
public boolean handleMobileCellScroll(Rect r) {
|
||||
int offset = computeVerticalScrollOffset();
|
||||
int height = getHeight();
|
||||
int extent = computeVerticalScrollExtent();
|
||||
int range = computeVerticalScrollRange();
|
||||
int hoverViewTop = r.top;
|
||||
int hoverHeight = r.height();
|
||||
|
||||
if (hoverViewTop <= 0 && offset > 0) {
|
||||
smoothScrollBy(-mSmoothScrollAmountAtEdge, 0);
|
||||
return true;
|
||||
}
|
||||
|
||||
if (hoverViewTop + hoverHeight >= height && (offset + extent) < range) {
|
||||
smoothScrollBy(mSmoothScrollAmountAtEdge, 0);
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
public void setCheeseList(ArrayList<String> cheeseList) {
|
||||
mCheeseList = cheeseList;
|
||||
}
|
||||
|
||||
/**
|
||||
* This scroll listener is added to the listview in order to handle cell swapping
|
||||
* when the cell is either at the top or bottom edge of the listview. If the hover
|
||||
* cell is at either edge of the listview, the listview will begin scrolling. As
|
||||
* scrolling takes place, the listview continuously checks if new cells became visible
|
||||
* and determines whether they are potential candidates for a cell swap.
|
||||
*/
|
||||
private AbsListView.OnScrollListener mScrollListener = new AbsListView.OnScrollListener () {
|
||||
|
||||
private int mPreviousFirstVisibleItem = -1;
|
||||
private int mPreviousVisibleItemCount = -1;
|
||||
private int mCurrentFirstVisibleItem;
|
||||
private int mCurrentVisibleItemCount;
|
||||
private int mCurrentScrollState;
|
||||
|
||||
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
|
||||
int totalItemCount) {
|
||||
mCurrentFirstVisibleItem = firstVisibleItem;
|
||||
mCurrentVisibleItemCount = visibleItemCount;
|
||||
|
||||
mPreviousFirstVisibleItem = (mPreviousFirstVisibleItem == -1) ? mCurrentFirstVisibleItem
|
||||
: mPreviousFirstVisibleItem;
|
||||
mPreviousVisibleItemCount = (mPreviousVisibleItemCount == -1) ? mCurrentVisibleItemCount
|
||||
: mPreviousVisibleItemCount;
|
||||
|
||||
checkAndHandleFirstVisibleCellChange();
|
||||
checkAndHandleLastVisibleCellChange();
|
||||
|
||||
mPreviousFirstVisibleItem = mCurrentFirstVisibleItem;
|
||||
mPreviousVisibleItemCount = mCurrentVisibleItemCount;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onScrollStateChanged(AbsListView view, int scrollState) {
|
||||
mCurrentScrollState = scrollState;
|
||||
mScrollState = scrollState;
|
||||
isScrollCompleted();
|
||||
}
|
||||
|
||||
/**
|
||||
* This method is in charge of invoking 1 of 2 actions. Firstly, if the listview
|
||||
* is in a state of scrolling invoked by the hover cell being outside the bounds
|
||||
* of the listview, then this scrolling event is continued. Secondly, if the hover
|
||||
* cell has already been released, this invokes the animation for the hover cell
|
||||
* to return to its correct position after the listview has entered an idle scroll
|
||||
* state.
|
||||
*/
|
||||
private void isScrollCompleted() {
|
||||
if (mCurrentVisibleItemCount > 0 && mCurrentScrollState == SCROLL_STATE_IDLE) {
|
||||
if (mCellIsMobile && mIsMobileScrolling) {
|
||||
handleMobileCellScroll();
|
||||
} else if (mIsWaitingForScrollFinish) {
|
||||
touchEventsEnded();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Determines if the listview scrolled up enough to reveal a new cell at the
|
||||
* top of the list. If so, then the appropriate parameters are updated.
|
||||
*/
|
||||
public void checkAndHandleFirstVisibleCellChange() {
|
||||
if (mCurrentFirstVisibleItem != mPreviousFirstVisibleItem) {
|
||||
if (mCellIsMobile && mMobileItemId != INVALID_ID) {
|
||||
updateNeighborViewsForID(mMobileItemId);
|
||||
handleCellSwitch();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Determines if the listview scrolled down enough to reveal a new cell at the
|
||||
* bottom of the list. If so, then the appropriate parameters are updated.
|
||||
*/
|
||||
public void checkAndHandleLastVisibleCellChange() {
|
||||
int currentLastVisibleItem = mCurrentFirstVisibleItem + mCurrentVisibleItemCount;
|
||||
int previousLastVisibleItem = mPreviousFirstVisibleItem + mPreviousVisibleItemCount;
|
||||
if (currentLastVisibleItem != previousLastVisibleItem) {
|
||||
if (mCellIsMobile && mMobileItemId != INVALID_ID) {
|
||||
updateNeighborViewsForID(mMobileItemId);
|
||||
handleCellSwitch();
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
@@ -0,0 +1,52 @@
|
||||
/*
|
||||
* Copyright (C) 2013 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package com.example.android.listviewdragginganimation;
|
||||
|
||||
import android.app.Activity;
|
||||
import android.os.Bundle;
|
||||
import android.widget.ListView;
|
||||
|
||||
import java.util.ArrayList;
|
||||
|
||||
/**
|
||||
* This application creates a listview where the ordering of the data set
|
||||
* can be modified in response to user touch events.
|
||||
*
|
||||
* An item in the listview is selected via a long press event and is then
|
||||
* moved around by tracking and following the movement of the user's finger.
|
||||
* When the item is released, it animates to its new position within the listview.
|
||||
*/
|
||||
public class ListViewDraggingAnimation extends Activity {
|
||||
|
||||
@Override
|
||||
protected void onCreate(Bundle savedInstanceState) {
|
||||
super.onCreate(savedInstanceState);
|
||||
setContentView(R.layout.activity_list_view);
|
||||
|
||||
ArrayList<String>mCheeseList = new ArrayList<String>();
|
||||
for (int i = 0; i < Cheeses.sCheeseStrings.length; ++i) {
|
||||
mCheeseList.add(Cheeses.sCheeseStrings[i]);
|
||||
}
|
||||
|
||||
StableArrayAdapter adapter = new StableArrayAdapter(this, R.layout.text_view, mCheeseList);
|
||||
DynamicListView listView = (DynamicListView) findViewById(R.id.listview);
|
||||
|
||||
listView.setCheeseList(mCheeseList);
|
||||
listView.setAdapter(adapter);
|
||||
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,51 @@
|
||||
/*
|
||||
* Copyright (C) 2013 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package com.example.android.listviewdragginganimation;
|
||||
|
||||
import android.content.Context;
|
||||
import android.widget.ArrayAdapter;
|
||||
|
||||
import java.util.HashMap;
|
||||
import java.util.List;
|
||||
|
||||
public class StableArrayAdapter extends ArrayAdapter<String> {
|
||||
|
||||
final int INVALID_ID = -1;
|
||||
|
||||
HashMap<String, Integer> mIdMap = new HashMap<String, Integer>();
|
||||
|
||||
public StableArrayAdapter(Context context, int textViewResourceId, List<String> objects) {
|
||||
super(context, textViewResourceId, objects);
|
||||
for (int i = 0; i < objects.size(); ++i) {
|
||||
mIdMap.put(objects.get(i), i);
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public long getItemId(int position) {
|
||||
if (position < 0 || position >= mIdMap.size()) {
|
||||
return INVALID_ID;
|
||||
}
|
||||
String item = getItem(position);
|
||||
return mIdMap.get(item);
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean hasStableIds() {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user