概述
</pre>随便写了几个Activity作为测试<p></p><p><img src="data:image/png;base64,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" alt="" /></p><p>布局就不多说了，一行字就好，加个颜色也行。</p><p><img src="data:image/png;base64,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" alt="" /></p><p>MainActivity的布局：3个Button，点击后，分别跳转到不同的Activity。</p><p></p><pre name="code" class="java"><Button
android:id="@+id/btn1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:text="Alpha Aniamtion"
/>
<Button
android:id="@+id/btn2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:text="Translate Animation"
/>
<Button
android:id="@+id/btn3"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:text="Translate slide from right to left"
/>一开始采取了比较麻烦的方法，
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn1:
Intent intent_alpha = new Intent(MainActivity.this, ActivityAlpha.class);
startActivity(intent_alpha);
overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
break;
case R.id.btn2:
Intent intent_trans = new Intent(MainActivity.this, ActivityTranslation.class);
startActivity(intent_trans);
overridePendingTransition(android.R.anim.slide_in_left,android.R.anim.slide_out_right);
break;
case R.id.btn3:
Intent intent_slide = new Intent(MainActivity.this, ActivityTranslation.class);
startActivity(intent_slide);
overridePendingTransition(R.anim.in_from_right, R.anim.out_to_left);
break;
default:
break;
}
}在每个startActivity（）方法后面加上 overridePendingTransition(android.R.anim.XXin, android.R.anim.XXout);
这两个参数跟别是即将进入的新的Activity要执行的动画，和即将看不见的原来的Activity要执行的动画。
同样，别忘了，在新的Activity退出时也要执行动画的话，可以覆写onKeyDown方法。
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if (keyCode == KeyEvent.KEYCODE_BACK) {
this.finish();
overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
}
return false;
}这次是在finish的后面加上那个方法。如果在一些非Activity类中调用的话，fragment啥的，因为调用者是Activity（我猜），就在前面加getActivity（），getParent（）啥的就行啦。
这里用到的有几个是android自带的动画的方法。
如果要自己写的话，可以在res里面新建文件夹anim，在里面新建动画的xml，如：
in_from_right.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/accelerate_interpolator" >
<translate
android:duration="500"
android:fromXDelta="100%p"
android:toXDelta="0%p" />
</set>集合set里面可以添加多种属性的动画，translate，scale，alpha等。
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另外一种实现的方法是，在style中声明一个style，并在想要执行动画的Activity的Manifest文件中设置theme
<style name="XXXX" parent="@android:style/XXXXX" mce_bogus="1">
<item name="android:activityOpenEnterAnimation">@anim/push_left_in</item> <span style="color:#ff0000;">打开</span>Activity时，<span style="font-family: Arial, Helvetica, sans-serif;"><span style="color:#ff0000;">即将进入</span>的Activity执行的动画</span>
<item name="android:activityOpenExitAnimation">@anim/push_left_out</item> <span style="color:#ff0000;"> </span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="color:#ff0000;">打开</span>Activity时，</span><span style="font-family: Arial, Helvetica, sans-serif;"><span style="color:#ff0000;">即将退出</span>的Activity执行的</span><span style="font-family: Arial, Helvetica, sans-serif;">动画 </span><span style="font-family: Arial, Helvetica, sans-serif;"> </span><span style="font-family: Arial, Helvetica, sans-serif;">
</span><item name="android:activityCloseEnterAnimation">@anim/push_right_in</item> <span style="color:#ff0000;">退出</span>Activity时，<span style="color:#ff0000;">即将进入</span>的Activity执行的动画
<item name="android:activityCloseExitAnimation">@anim/push_right_out</item> <span style="font-family: Arial, Helvetica, sans-serif;"><span style="color:#ff0000;">退出</span>Activity时，<span style="color:#ff0000;">即将退出</span>的Activity执行的动画</span>
</style>这个stlye可以继承自系统自带的一些style，但是不一定会有什么后果0.0
最后
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