Android PopWindow弹出后,设置背景亮度

调整屏幕背景透明度

最新推荐文章于 2022-10-12 08:47:02 发布

cjwsimple

最新推荐文章于 2022-10-12 08:47:02 发布

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分类专栏： Android app

本文链接：https://blog.youkuaiyun.com/man_embedded/article/details/51997717

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本文介绍了一种通过修改窗口属性来调整Android应用中PopupWindow显示时屏幕背景透明度的方法，并展示了具体的实现代码。

设置背景

/**
* 设置添加屏幕的背景透明度
* @param bgAlpha
*/
public void backgroundAlpha(float bgAlpha)
{
    WindowManager.LayoutParams lp = getWindow().getAttributes();
    　　　　lp.alpha = bgAlpha; //0.0-1.0
        getWindow().setAttributes(lp);
}

调用代码

recomPopup = new RecomPopup(mContext);
            recomPopup.setShowListener(new RecomPopup.ShowListener() {
                @Override
                public void show() {
                    backgroundAlpha(0.6f);
                }
            });
            recomPopup.setDismissListener(new RecomPopup.DismissListener() {
                @Override
                public void dismiss() {
                    backgroundAlpha(1f);
                }
            });
            recomPopup.showAtLocation(include_bottom, Gravity.NO_GRAVITY, 0, DevicesInfoUtils.getScreenHeight(mContext) - recomPopup.getHeight());

PopWindow代码

private ShowListener showListener;
private DismissListener dismissListener;

    @Override
    public void showAtLocation(View parent, int gravity, int x, int y) {
        super.showAtLocation(parent, gravity, x, y);
        if (showListener != null){
            showListener.show();
        }
    }

    @Override
    public void dismiss() {
        super.dismiss();
        if (dismissListener != null){
            dismissListener.dismiss();
        }
    }

    public void setShowListener(ShowListener showListener) {
        this.showListener = showListener;
    }

    public void setDismissListener(DismissListener dismissListener) {
        this.dismissListener = dismissListener;
    }

    public interface ShowListener{
        void show();
    }

    public interface DismissListener{
        void dismiss();
    }

*个人见解，不喜勿喷*