Android Dialog 设置圆角无效

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这两天有一个需求:设置dialog圆角,写完后发现并没有达到效果,以前也碰到这个问题,这里记录下解决方案,便于查阅。也有百度去查询原因,却没有发现合适的解答,当然更可能是我没找到,还是自己解决吧。

Dialog与DialogFragment 解决方案一致:只要设置背景透明解决问题了。

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));

        setContentView(view);
        setCancelable(true);
    }
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        //设置背景透明
        getDialog().getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));

        View view = View.inflate(getActivity(), R.layout.dialog_zntchain, null);
        return view;
    }

看到这里,不难明白,应该是google自己设置了默认的背景,虽然我们设置了view为圆角,但是在挂在已有背景下,我们就是自然看不到,看下源码,google也有说道透明问题。

 /**
     * Change the background of this window to a Drawable resource. Setting the
     * background to null will make the window be opaque. To make the window
     * transparent, you can use an empty drawable (for instance a ColorDrawable
     * with the color 0 or the system drawable android:drawable/empty.)
     *
     * @param resId The resource identifier of a drawable resource which will
     *              be installed as the new background.
     */
    public void setBackgroundDrawableResource(@DrawableRes int resId) {
        setBackgroundDrawable(mContext.getDrawable(resId));
    }


 

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转载自blog.csdn.net/denglusha737/article/details/63255577