How can i handle array index out of bound?

Question

I have a list of image in grid view.When i click the image it shows in full screen mood and with touch change one image to another just increasing position.here is the code for onTouchListener

private int position=0;
imageView.setOnTouchListener(new OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event)   
    {  
        if(event.getAction() == MotionEvent.ACTION_DOWN)  
        {  
              position++;
              if( v == findViewById( R.id.full_image_view ))   
              { 
                   imageView.setImageResource(imageAdapter.mThumbIds[position]);
              }
        }
        return false; 
    }
});

At the last image it it shows error that "it has stopped unexpectedly ".How can i handle the array of index bound?

Samir Mangroliya · Accepted Answer · 2012-05-30 12:19:05Z

4

you are try to get index that not in your array.your position must be less than array.length

 if( v == findViewById( R.id.full_image_view ))
              {
                  if(position < imageAdapter.mThumbIds.length){

                    imageView.setImageResource(imageAdapter.mThumbIds[position]);

                 }
               }

answered May 30, 2012 at 12:19

Samir Mangroliya

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Comments

Anthony Grist · Accepted Answer · 2012-05-30 12:19:05Z

0

Check that the index is valid (between 0 and array.size - 1 inclusive) before attempting to access that element in the array.

answered May 30, 2012 at 12:19

Anthony Grist

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