Change Image of ImageView programmatically in Android
Solution 1:
That happens because you're setting the src of the ImageView instead of the background.
Use this instead:
qImageView.setBackgroundResource(R.drawable.thumbs_down);
Here's a thread that talks about the differences between the two methods.
Solution 2:
Use in XML:
android:src="@drawable/image"
Source use:
imageView.setImageDrawable(ContextCompat.getDrawable(activity, R.drawable.your_image));