Activity切換動畫

1.在sttrs文件中定義動畫(漸變、縮放等)。

>漸變

<span style="font-size:14px;"><alpha xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="500"
    android:fromAlpha="0.0"
    android:toAlpha="1.0"
    android:interpolator="@android:anim/accelerate_interpolator">
</alpha></span>

<span style="font-size:14px;"><alpha xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="500"
    android:fromAlpha="1.0"
    android:toAlpha="0.0"
    android:interpolator="@android:anim/accelerate_interpolator">
</alpha></span>

>縮放

<scale xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromXScale="0.5"
    android:interpolator="@android:anim/accelerate_decelerate_interpolator"
    android:toXScale="1.0"
    android:fromYScale="0.5"
    android:toYScale="1.0"
    android:duration="300">
</scale>

<scale xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromXScale="1.0"
    android:interpolator="@android:anim/accelerate_decelerate_interpolator"
    android:toXScale="0.5"
    android:fromYScale="1.0"
    android:toYScale="0.5"
    android:duration="300">
</scale>

2.styles文件中導入動畫

    <!--自己的Style繼承自安卓，更改具體細節-->
    <style name="Anim_Mine" parent="android:Theme.Light.NoTitleBar">
        <item name="android:windowAnimationStyle">@style/scale</item>
    </style>
    <!--Activity淡入淡出動畫-->
    <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>
    <!--Activity縮放進入的動畫-->
    <style name="scale" parent="android:style/Animation.Activity">
        <item name="android:activityOpenEnterAnimation">@anim/scale_in</item>
        <item name="android:activityOpenExitAnimation">@anim/scale_out</item>
        <item name="android:activityCloseEnterAnimation">@anim/scale_in</item>
        <item name="android:activityCloseExitAnimation">@anim/scale_out</item>
    </style>

3.清單文件註冊的時候進行引用

 <activity android:name=".activities.AlphaActivity_2"  android:theme="@style/Anim_Mine"></activity>