android - android中的圆形轮廓图像

Question

我使用下面的代码在 android 中制作圆形头像

http://www.androidhub4you.com/2014/10/android-custom-shape-imageview-rounded.html

但在我的主要活动中，我使用 ListFragment 而不是 Activity

imageViewRound = ImageView)parentView.findViewById(R.id.imageView_round);
Bitmap icon = BitmapFactory.decodeResource(getResources(),R.drawable.noimage_square);
imageViewRound.setImageBitmap(icon);

我收到此错误

05-15 12:21:27.359: E/AndroidRuntime(25107): Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageBitmap(android.graphics.Bitmap)' on a null object reference

Answer 1

试试这些

 com.androidhub4you.crop.RoundedImageView imageViewRound =(com.androidhub4you.crop.RoundedImageView) parentView.findViewById(R.id.imageView_round);