Null Pointer Exception When Getting Image From Url To Put In Imageview

I'm getting my image through an URL and trying to set that to my imageView. But I'm getting a Null Pointer Exception. It is not even entering my asynchtask. Is there something I'm

Solution 1:

ImageView thumbnail = (ImageView) findViewById(R.id.btnThumbnail);

You need to get your image after inflating the layout, otherwise findViewById will returns null :

ImageView thumbnail; 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.detail);
    thumbnail = (ImageView) findViewById(R.id.btnThumbnail)