New API demo for the support library FragmentPager class.

Change-Id: I3da4c9fe83cac48054f1efaa40b1f57f68402faa

samples/ApiDemos/AndroidManifest.xml

@@ -475,6 +475,14 @@
             </intent-filter>
         </activity>
 
+        <activity android:name=".support.app.FragmentPagerSupport"
+                android:label="@string/fragment_pager_support">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.SAMPLE_CODE" />
+            </intent-filter>
+        </activity>
+
         <!-- Loader Samples -->
 
 <!-- BEGIN_INCLUDE(loader_throttle) -->

samples/ApiDemos/res/layout/fragment_pager.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 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.
+-->
+
+<!-- Top-level content view for the simple fragment sample. -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+        android:orientation="vertical" android:padding="4dip"
+        android:gravity="center_horizontal"
+        android:layout_width="match_parent" android:layout_height="match_parent">
+
+    <android.support.v4.app.FragmentPager
+            android:id="@+id/pager"
+            android:layout_width="match_parent"
+            android:layout_height="0px"
+            android:layout_weight="1">
+    </android.support.v4.app.FragmentPager>
+
+    <Button android:id="@+id/new_fragment"
+        android:layout_width="wrap_content" android:layout_height="wrap_content"
+        android:layout_weight="0"
+        android:text="@string/new_fragment">
+        <requestFocus />
+    </Button>
+</LinearLayout>

samples/ApiDemos/res/layout/fragment_pager_list.xml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2011 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.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@android:drawable/gallery_thumb">
+
+    <TextView android:id="@+id/text"
+        android:layout_width="match_parent" android:layout_height="wrap_content"
+        android:gravity="center_vertical|center_horizontal"
+        android:textAppearance="?android:attr/textAppearanceMedium"
+        android:text="@string/hello_world"/>
+
+    <!-- The frame layout is here since we will be showing either
+    the empty view or the list view.  -->
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="0dip"
+        android:layout_weight="1" >
+        <!-- Here is the list. Since we are using a ListActivity, we
+             have to call it "@android:id/list" so ListActivity will
+             find it -->
+        <ListView android:id="@android:id/list"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:drawSelectorOnTop="false"/>
+
+        <!-- Here is the view to show if the list is emtpy -->
+        <TextView android:id="@android:id/empty"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:textAppearance="?android:attr/textAppearanceMedium"
+            android:text="No items."/>
+
+    </FrameLayout>
+
+</LinearLayout>

samples/ApiDemos/res/layout/save_restore_state.xml

@@ -17,42 +17,42 @@
 <!-- Demonstrates saving and restoring activity state.
      See corresponding Java code com.android.sdk.app.SaveRestoreState.java. -->
 
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:padding="4dip"
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent" android:layout_height="match_parent">
+    <LinearLayout android:orientation="vertical" android:padding="4dip"
+        android:layout_width="match_parent" android:layout_height="wrap_content">
 
         <TextView android:id="@+id/msg"
             android:layout_width="match_parent" android:layout_height="wrap_content"
-        android:layout_weight="0"
+            android:layout_weight="0" android:textAppearance="?android:attr/textAppearanceMedium"
             android:paddingBottom="4dip" />
 
         <TextView
             android:layout_width="match_parent" android:layout_height="wrap_content"
-        android:layout_weight="0"
+            android:layout_weight="0" android:paddingBottom="4dip"
-        android:paddingBottom="4dip"
+            android:textAppearance="?android:attr/textAppearanceMedium"
             android:text="@string/saves_state"/>
 
         <EditText android:id="@+id/saved"
             android:layout_width="match_parent" android:layout_height="wrap_content"
-        android:layout_weight="1"
+            android:layout_weight="1" android:background="@drawable/green"
-        android:background="@drawable/green"
+            android:textAppearance="?android:attr/textAppearanceMedium"
             android:text="@string/initial_text"
             android:freezesText="true">
-        <requestFocus />
         </EditText>
 
         <TextView
             android:layout_width="match_parent" android:layout_height="wrap_content"
-        android:layout_weight="0"
+            android:layout_weight="0" android:paddingTop="8dip" android:paddingBottom="4dip"
-        android:paddingTop="8dip"
+            android:textAppearance="?android:attr/textAppearanceMedium"
-        android:paddingBottom="4dip"
             android:text="@string/no_saves_state"/>
 
         <EditText
             android:layout_width="match_parent" android:layout_height="wrap_content"
-        android:layout_weight="1"
+            android:layout_weight="1" android:background="@drawable/red"
-        android:background="@drawable/red"
+            android:textAppearance="?android:attr/textAppearanceMedium"
             android:text="@string/initial_text">
         </EditText>
 
     </LinearLayout>
-
+</ScrollView>

samples/ApiDemos/res/values/strings.xml

@@ -178,6 +178,8 @@
 
     <string name="fragment_stack_support">Support/App/Fragment/Stack</string>
 
+    <string name="fragment_pager_support">Support/App/Fragment/Pager</string>
+
     <string name="loader_throttle">App/Loader/Throttle</string>
     
     <string name="loader_throttle_support">Support/Loader/Throttle</string>

samples/ApiDemos/src/com/example/android/apis/support/app/FragmentPagerSupport.java

@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2011 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.apis.support.app;
+
+import com.example.android.apis.R;
+import com.example.android.apis.Shakespeare;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentActivity;
+import android.support.v4.app.FragmentPager;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v4.app.ListFragment;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.View.OnClickListener;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.ListView;
+import android.widget.TextView;
+
+public class FragmentPagerSupport extends FragmentActivity
+        implements FragmentPager.Adapter {
+    static final int NUM_ITEMS = 10;
+
+    FragmentPager mPager;
+    int mCurPos;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.fragment_pager);
+
+        mPager = (FragmentPager)findViewById(R.id.pager);
+        mPager.setAdapter(this);
+
+        // Watch for button clicks.
+        Button button = (Button)findViewById(R.id.new_fragment);
+        button.setOnClickListener(new OnClickListener() {
+            public void onClick(View v) {
+                mCurPos++;
+                if (mCurPos < NUM_ITEMS) {
+                    mPager.setCurrentItem(mCurPos);
+                } else {
+                    mCurPos--;
+                }
+            }
+        });
+    }
+
+    @Override
+    public int getCount() {
+        return NUM_ITEMS;
+    }
+
+    @Override
+    public Fragment getItem(int position) {
+        return ArrayListFragment.newInstance(position);
+    }
+
+    public static class ArrayListFragment extends ListFragment {
+        int mNum;
+
+        /**
+         * Create a new instance of CountingFragment, providing "num"
+         * as an argument.
+         */
+        static ArrayListFragment newInstance(int num) {
+            ArrayListFragment f = new ArrayListFragment();
+
+            // Supply num input as an argument.
+            Bundle args = new Bundle();
+            args.putInt("num", num);
+            f.setArguments(args);
+
+            return f;
+        }
+
+        /**
+         * When creating, retrieve this instance's number from its arguments.
+         */
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+            mNum = getArguments() != null ? getArguments().getInt("num") : 1;
+        }
+
+        /**
+         * The Fragment's UI is just a simple text view showing its
+         * instance number.
+         */
+        @Override
+        public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                Bundle savedInstanceState) {
+            View v = inflater.inflate(R.layout.fragment_pager_list, container, false);
+            View tv = v.findViewById(R.id.text);
+            ((TextView)tv).setText("Fragment #" + mNum);
+            return v;
+        }
+
+        @Override
+        public void onActivityCreated(Bundle savedInstanceState) {
+            super.onActivityCreated(savedInstanceState);
+            setListAdapter(new ArrayAdapter<String>(getActivity(),
+                    android.R.layout.simple_list_item_1, Shakespeare.TITLES));
+        }
+
+        @Override
+        public void onListItemClick(ListView l, View v, int position, long id) {
+            Log.i("FragmentList", "Item clicked: " + id);
+        }
+    }
+}