Android基于ViewFilpper实现文字LED显示效果示例

/** * FlipperView文字效果动画之：文字滚动动画 * * @description： * @author ldm * @date 2016-5-17 上午9:58:26 */public class Animation2 extends Activity implements    AdapterView.OnItemSelectedListener {  // Spinner数据源  private String[] mStrings = { "Push up", "Push left", "Cross fade",      "Hyperspace" };  // 控件ViewFlipper  private ViewFlipper mFlipper;  @Override  public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.animation_2);    // 初始化UI控件    initViews();  }  private void initViews() {    mFlipper = ((ViewFlipper) this.findViewById(R.id.flipper));    mFlipper.startFlipping();    Spinner s = (Spinner) findViewById(R.id.spinner);    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,        android.R.layout.simple_spinner_item, mStrings);    // 定义Spinner下拉菜单模式    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);    // 设置数据    s.setAdapter(adapter);    // 添加监听    s.setOnItemSelectedListener(this);  }  /**   * Spinner的item选择监听事件处理   */  @Override  public void onItemSelected(AdapterView<?> parent, View v, int position,      long id) {    switch (position) {    case 0:// 文字从下进入，从上移出，伴随透明度变化      mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,          R.anim.push_up_in));      mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,          R.anim.push_up_out));      break;    case 1:// 文字从右侧向左进入，从右侧移出，伴随透明度变化      mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,          R.anim.push_left_in));      mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,          R.anim.push_left_out));      break;    case 2:// 文字透明度改变，从0-1-0      mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,          android.R.anim.fade_in));      mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,          android.R.anim.fade_out));      break;    default:// 多维空间动画（复合动画效果）      mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,          R.anim.hyperspace_in));      mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,          R.anim.hyperspace_out));      break;    }  }  @Override  public void onNothingSelected(AdapterView<?> parent) {    // TODO Auto-generated method stub    // DO NOTHING  }}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:orientation="vertical"  android:padding="10dip" >  <ViewFlipper    android:id="@+id/flipper"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_marginBottom="20dip"    android:flipInterval="2000" >    <TextView      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:gravity="center_horizontal"      android:text="@string/animation_2_text_1"      android:textSize="26sp" />    <TextView      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:gravity="center_horizontal"      android:text="@string/animation_2_text_2"      android:textSize="26sp" />    <TextView      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:gravity="center_horizontal"      android:text="@string/animation_2_text_3"      android:textSize="26sp" />    <TextView      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:gravity="center_horizontal"      android:text="@string/animation_2_text_4"      android:textSize="26sp" />  </ViewFlipper>  <TextView    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_marginBottom="5dip"    android:text="@string/animation_2_instructions" />  <Spinner    android:id="@+id/spinner"    android:layout_width="match_parent"    android:layout_height="wrap_content" /></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" >  <translate    android:duration="300"<!--动画时长-->    android:fromYDelta="100%p"<!--Y方向初始位置-->    android:toYDelta="0" /><!--Y方向动画结束位置-->  <alpha    android:duration="300"    android:fromAlpha="0.0"<!--初始透明度-->    android:toAlpha="1.0" /><!--动画结束时透明度--></set>

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" >  <translate    android:duration="300"    android:fromYDelta="0"    android:toYDelta="-100%p" />  <alpha    android:duration="300"    android:fromAlpha="1.0"    android:toAlpha="0.0" /></set>

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" >  <translate    android:duration="300"    android:fromXDelta="100%p"    android:toXDelta="0" />  <alpha    android:duration="300"    android:fromAlpha="0.0"    android:toAlpha="1.0" /></set>

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" >  <translate    android:duration="300"    android:fromXDelta="0"    android:toXDelta="-100%p" />  <alpha    android:duration="300"    android:fromAlpha="1.0"    android:toAlpha="0.0" /></set>

<?xml version="1.0" encoding="utf-8"?><alpha xmlns:android="http://schemas.android.com/apk/res/android"  android:duration="@android:integer/config_longAnimTime"  android:fromAlpha="0.0"  android:interpolator="@interpolator/decelerate_quad"  android:toAlpha="1.0" />

<?xml version="1.0" encoding="utf-8"?><alpha xmlns:android="http://schemas.android.com/apk/res/android"  android:duration="@android:integer/config_mediumAnimTime"  android:fromAlpha="1.0"  android:interpolator="@interpolator/accelerate_quad"<!--设置动画插值器-->  android:toAlpha="0.0" />

<?xml version="1.0" encoding="utf-8"?><alpha xmlns:android="http://schemas.android.com/apk/res/android"  android:duration="300"  android:fromAlpha="0.0"  android:startOffset="1200"<!--设置启动时间-->  android:toAlpha="1.0" />

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"  android:shareInterpolator="false" >  <scale    android:duration="700"    android:fillAfter="false"<!--动画结束画面是否停留在最后一帧-->    android:fillEnabled="true"<!--使能填充效果-->    android:fromXScale="1.0"<!--X方向起始缩放值-->    android:fromYScale="1.0"<!--Y方向起始缩放值-->    android:interpolator="@android:anim/accelerate_decelerate_interpolator"    android:pivotX="50%"<!--动画相对于物件的X、Y坐标的开始位置-->    android:pivotY="50%"    android:toXScale="1.4"    android:toYScale="0.6" />  <set android:interpolator="@android:anim/accelerate_interpolator" >    <scale<!--缩放动画-->      android:duration="400"      android:fillAfter="true"      android:fillBefore="false"      android:fillEnabled="true"      android:fromXScale="1.4"      android:fromYScale="0.6"      android:pivotX="50%"      android:pivotY="50%"      android:startOffset="700"      android:toXScale="0.0"      android:toYScale="0.0" />    <rotate<!--旋转动画-->      android:duration="400"      android:fillAfter="true"      android:fillBefore="false"      android:fillEnabled="true"      android:fromDegrees="0"      android:pivotX="50%"      android:pivotY="50%"      android:startOffset="700"      android:toDegrees="-45"      android:toYScale="0.0" />  </set></set>