Android 界面淡出 淡入效果

Android 界面淡出 淡入效果：

下面是一个工具类：

AnimFadeUtil.java

/**
 * 处理界面的淡入和淡出的切换
 * @author Bruce
 *
 */
public class AnimFadeUtil {

private static Handler handler = new Handler(){
public void handleMessage(Message msg) {
View view = (View) msg.obj;
//得到它的父元素
ViewGroup parent = (ViewGroup) view.getParent();
parent.removeView(view);
};
};

/**
* 淡出
* @param view 淡出的界面
* @param duration 淡出的时间
*/
public static void fadeOut(final View view,long duration){

Animation animation = new AlphaAnimation(1, 0);
animation.setDuration(duration);
animation.setFillAfter(true);//设置第一个界面依然存在
animation.setAnimationListener(new AnimationListener() {

@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub

}

@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub

}

/**
* 淡出动画执行完毕
*/
@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
Message message = Message.obtain();
message.obj = view;
handler.sendMessage(message);
}
});
view.startAnimation(animation);
}
/**
* 
* @param view
* @param duration
* @param delay 第一个界面淡出的时间
*/
public static void fadeIn(View view,long duration ,long delay){
Animation animation = new AlphaAnimation(0,1);
animation.setDuration(duration);
animation.setStartOffset(delay);

view.startAnimation(animation);

}