Я получил следующий пример в демоверсиях API
по следующему пути
C:\Program Files\Android\android-sdk-windows\samples\android-10\ApiDemos\res\layout
и
C:\Program Files\Android\android-sdk-windows\samples\android-10\ApiDemos\src\com\example\android\apis\view
TextSwitcher1.java
public class TextSwitcher1 extends Activity implements
ViewSwitcher.ViewFactory, View.OnClickListener {
private TextSwitcher mSwitcher;
private int mCounter = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.text_switcher_1);
mSwitcher = (TextSwitcher) findViewById(R.id.switcher);
mSwitcher.setFactory(this);
Animation in = AnimationUtils.loadAnimation(this,
android.R.anim.fade_in);
Animation out = AnimationUtils.loadAnimation(this,
android.R.anim.fade_out);
mSwitcher.setInAnimation(in);
mSwitcher.setOutAnimation(out);
Button nextButton = (Button) findViewById(R.id.next);
nextButton.setOnClickListener(this);
updateCounter();
}
public void onClick(View v) {
mCounter++;
updateCounter();
}
private void updateCounter() {
mSwitcher.setText(String.valueOf(mCounter));
}
public View makeView() {
TextView t = new TextView(this);
t.setGravity(Gravity.TOP | Gravity.CENTER_HORIZONTAL);
t.setTextSize(36);
return t;
}
}
TextSwitcher_1.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2007 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:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<Button android:id="@+id/next"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/text_switcher_1_next_text" />
<TextSwitcher android:id="@+id/switcher"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>