利用Theme自定义Activity间的切换动画

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

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<?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

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<?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：

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<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"

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<?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：

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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);

}

}

源码下载，点击这里