Android(安卓)欢迎界面淡出动画效果(Animation)

进入App后，想做一个画面的淡出效果，如图所示：

代码非常简单

1 MainActivity.java

package com.example.testanimation;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.animation.AlphaAnimation;import android.widget.ImageView;public class MainActivity extends Activity {            private   ImageView   show;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);show = (ImageView)findViewById(R.id.gradually);  AlphaAnimation   alpha = new AlphaAnimation(1.0f, 0.0f);  alpha.setDuration(4000);  alpha.setFillAfter(true);  show.setAnimation(alpha);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// Handle action bar item clicks here. The action bar will// automatically handle clicks on the Home/Up button, so long// as you specify a parent activity in AndroidManifest.xml.int id = item.getItemId();if (id == R.id.action_settings) {return true;}return super.onOptionsItemSelected(item);}}

代码非常简单

2 main_activity.xml

这个布局文件一定切记，要把ImageView组件写在TextView组件的下方，这样ImageView组件才能完全覆盖TextView组件，如果写到TextView组件之上的话，就没办法覆盖了，这点要记住，代码相对比较简单，没什么可以讲的。

源代码地址：http://download.csdn.net/detail/danielntz/9468570

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