锁屏的一些动画

紧急呼救或者锁屏相机按返回键返回锁屏时，播放的动画是wallpaper_open_exit，如下：

private boolean setKeyguardOccludedLw(boolean isOccluded) {
    boolean wasOccluded = mKeyguardOccluded;
    boolean showing = mKeyguardDelegate.isShowing();
    if (wasOccluded && !isOccluded && showing) {
        mKeyguardOccluded = false;
        mKeyguardDelegate.setOccluded(false, true /* animate */);
        mStatusBar.getAttrs().privateFlags |= PRIVATE_FLAG_KEYGUARD;
        if (!mKeyguardDelegate.hasLockscreenWallpaper()) {
            mStatusBar.getAttrs().flags |= FLAG_SHOW_WALLPAPER;
        }
        Animation anim = AnimationUtils.loadAnimation(mContext,
                com.android.internal.R.anim.wallpaper_open_exit);
        mWindowManagerFuncs.overridePlayingAppAnimationsLw(anim);
        return true;
    } else if (!wasOccluded && isOccluded && showing) {
        mKeyguardOccluded = true;
        mKeyguardDelegate.setOccluded(true, false /* animate */);
        mStatusBar.getAttrs().privateFlags &= ~PRIVATE_FLAG_KEYGUARD;
        mStatusBar.getAttrs().flags &= ~FLAG_SHOW_WALLPAPER;
        return true;
    } else {
        return false;
    }
}

　　如果返回过程中会闪现桌面壁纸，可更改该动画，如下：将位移动画注释掉

<set xmlns:android="http://schemas.android.com/apk/res/android"
        android:shareInterpolator="false" android:zAdjustment="top">
<!--gome add by jwb-->
    <alpha android:fromAlpha="1.0" android:toAlpha="1.0"
            android:fillEnabled="true" android:fillBefore="true" android:fillAfter="true"
            android:interpolator="@interpolator/accelerate_quad"
            android:startOffset="250"
            android:duration="500"/>
 
    <!--<translate android:fromYDelta="0" android:toYDelta="110%"
            android:fillEnabled="true" android:fillBefore="true" android:fillAfter="true"
            android:interpolator="@interpolator/fast_out_linear_in"
            android:duration="225"/>
 
    <scale android:fromXScale="1.0" android:toXScale="1.0"
            android:fromYScale="1.0" android:toYScale="1.0"
            android:fillEnabled="true" android:fillBefore="true" android:fillAfter="true"
            android:pivotX="50%p" android:pivotY="50%p"
            android:interpolator="@interpolator/fast_out_slow_in"
            android:duration="225" />-->
</set>