转载请注明出处：http://blog.csdn.NET/lmj623565791/article/details/22990643
大多Android系统默认Activity间的动画切换效果为，右边滑入，左边滑出；有时候我们的需求可能是要求所有Activity的切换为淡入淡出的效果，这时候就可能需要改变一下默认的切换风格。
下面开始实现：
首先在res文件夹下建立anim文件夹，然后在里面建立fade_in.xml和fade_out.xml两个动画资源
fade_in.xml
[html] view plain copy print ? <?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:interpolator=“@android:anim/accelerate_interpolator” android:toAlpha=“1.0” /> <?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:interpolator="@android:anim/accelerate_interpolator" android:toAlpha="1.0" /> fade_out .xml [html] view plain copy print ? <?xml version=“1.0” encoding=“utf-8”?> <alpha xmlns:android=“http://schemas.android.com/apk/res/android” android:duration=“300” android:fromAlpha=“1.0” android:interpolator=“@android:anim/accelerate_interpolator” 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="1.0" android:interpolator="@android:anim/accelerate_interpolator" android:toAlpha="0.0" /> 然后在values文件夹下的styles.xml中的resources标签内写： [html] view plain copy print ? <style name=“Anim_fade” parent=“android:Theme.NoTitleBar”> <item name=“android:windowAnimationStyle”>@style/fade</item> </style> <style name=“fade” parent=“@android:style/Animation.Activity”> <item name=“android:activityOpenEnterAnimation”>@anim/fade_in</item> <item name=“android:activityOpenExitAnimation”>@anim/fade_out</item> <item name=“android:activityCloseEnterAnimation”>@anim/fade_in</item> <item name=“android:activityCloseExitAnimation”>@anim/fade_out</item> </style> <style name="Anim_fade" parent="android:Theme.NoTitleBar"> <item name="android:windowAnimationStyle">@style/fade</item> </style> <style name="fade" parent="@android:style/Animation.Activity"> <item name="android:activityOpenEnterAnimation">@anim/fade_in</item> <item name="android:activityOpenExitAnimation">@anim/fade_out</item> <item name="android:activityCloseEnterAnimation">@anim/fade_in</item> <item name="android:activityCloseExitAnimation">@anim/fade_out</item> </style> 最后一步在AndroidManifest.xml中的Activity的声明上加入android:theme=”@style/Anim_fade” [html] view plain copy print ? <?xml version=“1.0” encoding=“utf-8”?> <manifest xmlns:android=“http://schemas.android.com/apk/res/android” package=“com.example.customanimationforactivity” android:versionCode=“1” android:versionName=“1.0” > <uses-sdk android:minSdkVersion=“10” android:targetSdkVersion=“10” /> <application android:allowBackup=“true” android:icon=“@drawable/ic_launcher” android:label=“@string/app_name” android:theme=“@android:style/Theme.NoTitleBar” > <activity android:name=“com.example.customanimationforactivity.MainActivity” android:label=“@string/app_name” android:theme=“@style/Anim_fade” > <intent-filter> <action android:name=“android.intent.action.MAIN” /> <category android:name=“android.intent.category.LAUNCHER” /> </intent-filter> </activity> <activity android:name=“.AppActivity” android:theme=“@style/Anim_fade” > </activity> </application> </manifest> <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.customanimationforactivity" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="10" android:targetSdkVersion="10" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@android:style/Theme.NoTitleBar" > <activity android:name="com.example.customanimationforactivity.MainActivity" android:label="@string/app_name" android:theme="@style/Anim_fade" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".AppActivity" android:theme="@style/Anim_fade" > </activity> </application> </manifest> 贴下Splash Activity的代码： [java] view plain copy print ? package com.example.customanimationforactivity; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.os.Handler; public class MainActivity extends Activity { private Handler handler = new Handler(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); handler.postDelayed(new Runnable() { @Override public void run() { Intent intent = new Intent(MainActivity.this, AppActivity.class); startActivity(intent); finish(); } }, 1000); } } package com.example.customanimationforactivity; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.os.Handler; public class MainActivity extends Activity { private Handler handler = new Handler(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); handler.postDelayed(new Runnable() { @Override public void run() { Intent intent = new Intent(MainActivity.this, AppActivity.class); startActivity(intent); finish(); } }, 1000); } }