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 adapter = new ArrayAdapter(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<&＃63;> 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<&＃63;> parent) {
    // TODO Auto-generated method stub
    // DO NOTHING
  }
}

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