diff --git a/samples/ApiDemos/AndroidManifest.xml b/samples/ApiDemos/AndroidManifest.xml
index 34464a0f6..8490facfb 100644
--- a/samples/ApiDemos/AndroidManifest.xml
+++ b/samples/ApiDemos/AndroidManifest.xml
@@ -1117,6 +1117,14 @@
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diff --git a/samples/ApiDemos/res/layout/text_undo.xml b/samples/ApiDemos/res/layout/text_undo.xml
new file mode 100644
index 000000000..f7d74e820
--- /dev/null
+++ b/samples/ApiDemos/res/layout/text_undo.xml
@@ -0,0 +1,58 @@
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diff --git a/samples/ApiDemos/res/values/strings.xml b/samples/ApiDemos/res/values/strings.xml
index 5a1df82de..66fa46bef 100644
--- a/samples/ApiDemos/res/values/strings.xml
+++ b/samples/ApiDemos/res/values/strings.xml
@@ -421,6 +421,12 @@
Plain, bold, italic, bold-italic
Assigned programmatically:
+ Content/Undo Manager/Text
+ Demonstrates simple use of UndoManager with text editing
+ in a TextView.
+ Undo
+ Redo
+
Content/Resources/Layout Reference
Shows how to write layout
resource references, so that you can define multiple different configurations of
diff --git a/samples/ApiDemos/src/com/example/android/apis/content/TextUndoActivity.java b/samples/ApiDemos/src/com/example/android/apis/content/TextUndoActivity.java
new file mode 100644
index 000000000..dd309c955
--- /dev/null
+++ b/samples/ApiDemos/src/com/example/android/apis/content/TextUndoActivity.java
@@ -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());
+ }
+}