PopupWindow 被截断至屏幕底部

Question

PopupWindow 会很好地膨胀，直到它接近屏幕底部为止，它被切断。有人知道当它朝向屏幕底部时如何向上充气吗？

public SelectBucketMenu(Context context) {
        super(context);
        this.mContext = context;

        setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        setOutsideTouchable(true);
        setFocusable(true);
        //Need set windowlayout for API 19 otherwise window won't appear
        setWindowLayoutMode(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);

        setupView();
    }

    private void setupView(){
        View view = LayoutInflater.from(mContext)
                .inflate(R.layout.popupmenu_selectbucket, null);
        ButterKnife.bind(this, view);
        setContentView(view);
    }

有人知道为什么吗？

Answer 1

测量视图然后设置高度解决了我的问题。

View view = LayoutInflater.from(mContext).inflate(R.layout.popupmenu_addphotos, null);

view.measure(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
setHeight(view.getMeasuredHeight());