App crashes on change of ImageView

Question

I\'m trying to create a simple flashlight app in order to learn android development. I\'m trying to get it so that when when you click on the light ImageView object it changes t

Answer 1

you do not need to declare a variable light in the handler

public class flash extends ActionBarActivity {

        public Boolean on = false;
        ImageView light;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_flash);

            light = (ImageView) findViewById(R.id.light);

            light.setOnClickListener(new View.OnClickListener()
            {
                public void onClick(View v)
                {
                    if(on){
                        light.setImageResource(R.drawable.flash_off);
                        on = false;
                    }else{
                        light.setImageResource(R.drawable.flash_on);
                        on = true;
                    }
                }
            });
        }