版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
原文链接：https://blog.csdn.net/chenqi5256969/article/details/54572078
效果如图

代码如下：

Button show;
RelativeLayout main;
private PopupWindow mPopupWindow;
private View mView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
show = (Button) findViewById(R.id.show);
main = (RelativeLayout) findViewById(R.id.main);

//这个是你弹出框需要的布局
mView = View.inflate(MainActivity.this, R.layout.example_pop, null);

Button button = (Button) mView.findViewById(R.id.button_show);

//这个是实验弹出框的点击事件是否可以响应
button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Toast.makeText(MainActivity.this, "出现吧", Toast.LENGTH_SHORT).show();

    }
});

mPopupWindow = new PopupWindow(mView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
mPopupWindow.setFocusable(true);
mPopupWindow.setOutsideTouchable(true);
mPopupWindow.setBackgroundDrawable(new BitmapDrawable(getResources(), (Bitmap) null));
mPopupWindow.getContentView().setFocusableInTouchMode(true);
mPopupWindow.getContentView().setFocusable(true);




mPopupWindow.getContentView().setOnKeyListener(new View.OnKeyListener() {
    @Override
    public boolean onKey(View v, int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_MENU && event.getRepeatCount() == 0
                && event.getAction() == KeyEvent.ACTION_DOWN) {
            if (mPopupWindow != null && mPopupWindow.isShowing()) {

                mPopupWindow.dismiss();

            }
            return true;
        }
        return false;
    }
});
mPopupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {
    @Override
    public void onDismiss() {
        AlphaAnimation alphaAnimation = new AlphaAnimation(0.5f, 1.0f);

        alphaAnimation.setFillAfter(true);
        main.startAnimation(alphaAnimation);
    }
});

show.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {

        AlphaAnimation alphaAnimation = new AlphaAnimation(1.0f, 0.5f);

        alphaAnimation.setFillAfter(true);
        main.startAnimation(alphaAnimation);
        mPopupWindow.showAtLocation(v, Gravity.BOTTOM, 0, 0);
    }
});

}

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版权声明：本文为CSDN博主「变法者」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/chenqi5256969/article/details/54572078