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New API demo for UndoManager.

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Change-Id: Ic49211c771db275f27ceefa5372b005a357fce21
This commit is contained in:
Dianne Hackborn
2013-04-26 18:09:32 -07:00
parent 0d73759171
commit f25ca509d5
4 changed files with 141 additions and 0 deletions
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8
samples/ApiDemos/AndroidManifest.xml
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@@ -1117,6 +1117,14 @@
</intent-filter>
</activity>
<activity android:name=".content.TextUndoActivity" android:label="@string/activity_text_undo">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.SAMPLE_CODE" />
<category android:name="android.intent.category.EMBED" />
</intent-filter>
</activity>
<activity android:name=".content.ResourcesLayoutReference"
android:label="@string/activity_resources_layout_reference">
<intent-filter>

58
samples/ApiDemos/res/layout/text_undo.xml Normal file
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@@ -0,0 +1,58 @@
<?xml version="1.0" encoding="utf-8"?>
<!-- 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.
-->
<!-- Demonstrates saving and restoring activity state.
See corresponding Java code com.android.sdk.app.SaveRestoreState.java. -->
<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:textAppearance="?android:attr/textAppearanceMedium"
android:paddingBottom="8dip"
android:text="@string/text_undo_msg" />
<EditText android:id="@+id/text"
android:layout_width="match_parent" android:layout_height="wrap_content"
android:layout_weight="1"
android:textAppearance="?android:attr/textAppearanceMedium"
android:freezesText="true">
</EditText>
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:paddingTop="8dip">
<Button
android:id="@+id/undo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/undo"
android:layout_gravity="bottom" />
<Button
android:id="@+id/redo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/redo"
android:layout_gravity="bottom" />
</LinearLayout>
</LinearLayout>
</ScrollView>

6
samples/ApiDemos/res/values/strings.xml
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@@ -421,6 +421,12 @@
<string name="styled_text">Plain, <b>bold</b>, <i>italic</i>, <b><i>bold-italic</i></b></string>
<string name="styled_text_prog">Assigned programmatically:</string>
<string name="activity_text_undo">Content/Undo Manager/Text</string>
<string name="text_undo_msg">Demonstrates simple use of UndoManager with text editing
in a TextView.</string>
<string name="undo">Undo</string>
<string name="redo">Redo</string>
<string name="activity_resources_layout_reference">Content/Resources/Layout Reference</string>
<string name="resources_layout_reference_description">Shows how to write layout
resource references, so that you can define multiple different configurations of

69
samples/ApiDemos/src/com/example/android/apis/content/TextUndoActivity.java Normal file
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@@ -0,0 +1,69 @@
/*
* 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.apis.content;
import android.app.Activity;
import android.content.UndoManager;
import android.os.Parcelable;
import android.view.View;
import android.widget.Button;
import com.example.android.apis.R;
import android.os.Bundle;
import android.widget.TextView;
/**
* Simple example of using an UndoManager for editing text in a TextView.
*/
public class TextUndoActivity extends Activity {
UndoManager mUndoManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mUndoManager = new UndoManager();
if (savedInstanceState != null) {
Parcelable p = savedInstanceState.getParcelable("undo");
if (p != null) {
mUndoManager.restoreInstanceState(p);
}
}
setContentView(R.layout.text_undo);
((TextView)findViewById(R.id.text)).setUndoManager(mUndoManager, "text");
((Button)findViewById(R.id.undo)).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mUndoManager.undo(null, 1);
}
});
((Button)findViewById(R.id.redo)).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mUndoManager.redo(null, 1);
}
});
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putParcelable("undo", mUndoManager.saveInstanceState());
}
}