Question

I’m getting a NullPointerException on my Dialog. Here’s my code:

@Override
public boolean onDoubleTap(MotionEvent e) {
    Toast.makeText(getApplication(), "test lang ito! ", Toast.LENGTH_SHORT).show();
    Dialog d = new Dialog(getApplicationContext());
    d.setContentView(R.layout.popup_image);
    ImageView imageView = (ImageView)findViewById(R.id.image);
    imageView.setImageResource(resid[0]);
    d.show();
    return false;
}

in this line: imageView.setImageResource(resid[0]);

Answer 1

I imagine you want to look for the ImageView in the dialog layout, but you are looking in your Activity layout.

Try using

ImageView imageView = (ImageView) d.findViewById(R.id.image);

instead and see if that fixes it.