Android PopUpWindow的底部弹出和消失

实现的方法是：

private void show(){

View popLayout = LayoutInflater.from(this).inflate(R.layout.layout_pop_up_window,null);

ImageView ivPop = popLayout.findViewById(R.id.iv_pop);

ivPop.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

Toast.makeText(MainActivity.this, "123456789", Toast.LENGTH_SHORT).show();

}

});

PopupWindow popupWindow = new PopupWindow(popLayout, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);

popupWindow.setTouchable(true);

popupWindow.setTouchInterceptor(new View.OnTouchListener() {

@Override

public boolean onTouch(View view, MotionEvent motionEvent) {

return false;

}

});

popupWindow.setFocusable(true);

popupWindow.setOutsideTouchable(true);

popupWindow.setBackgroundDrawable(new ColorDrawable(0));

popupWindow.setAnimationStyle(R.style.pop_anim);

popupWindow.showAtLocation(btnShow, Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0);

}

在values中的style文件中添加样式：

<style name="pop_anim" parent="android:Animation">

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

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

</style>

在res文件夹下，新建anim文件夹，新建两个文件：

pop_enter_anim：

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

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

<translate

android:duration="200"

android:fromYDelta="100%p"

android:toYDelta="0" />

<alpha

android:duration="200"

android:fromAlpha="0.0"

android:toAlpha="1.0" />

</set>

pop_exit_anim：

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

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

<translate

android:duration="1000"

android:fromYDelta="0"

android:toYDelta="50%p" />

<alpha

android:duration="1000"

android:fromAlpha="1.0"

android:toAlpha="0.0" />

</set>