popwindow动画显示消失，activity切换动画

popwindow通过setAnimationStyle(int animationStyle)函数来设置动画效果

android:windowEnterAnimation表示进入窗口动画

android:windowExitAnimation表示窗口退出动画

在res/values/style.xml代码：

<?xml version="1.0" encoding="utf-8"?>

<item name="android:windowEnterAnimation">@anim/popup_enter</item>

<item name="android:windowExitAnimation">@anim/popup_exit</item>

</style>

</resources>

在res/anim/popup_enter.xml声明所需进入动画

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android">

<scale android:fromXScale="0.6" android:toXScale="1.0"

android:fromYScale="0.6" android:toYScale="1.0" android:pivotX="50%"

android:pivotY="50%" android:duration="1000" />

<alpha android:interpolator="@android:anim/decelerate_interpolator"

android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="1000" />

</set>

在res/anim/popup_exit.xml声明所需退出动画

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android">

<scale android:fromXScale="1.0" android:toXScale="0.5"

android:fromYScale="1.0" android:toYScale="0.5" android:pivotX="50%"

android:pivotY="50%" android:duration="500" />

<alpha android:interpolator="@android:anim/accelerate_interpolator"

android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="500" />

</set>

设置popwindow的位置及动画

        popupWindow.setAnimationStyle(R.style.PopupAnimation);
        popupWindow.showAtLocation(findViewById(R.id.parent), Gravity.CENTER
                | Gravity.CENTER, 0, 0);
        popupWindow.update();

调用popupWindow.dismiss();语句。popwindow消失，自动调用消失动画popup_exit.xml

activity切换动画

public void onClick(View v) {
                Intent intent = new Intent(ActivityAnim.this,ActivityTwo.class);
                startActivity(intent);
                overridePendingTransition(R.anim.act_enter,R.anim.act_exit);
}

overridePendingTransition(int ,int)函数，第一个参数为activity显示动画，第二个参数为退出动画，两个动画的xml文件存放在anim文件夹下

或者：getWindow().setWindowAnimations(R.style.window_animation);