After i Add setOnClickListener(android.view.View$OnClickListener) in activity the apps is crash. the error is Attempt to invoke virtual method 'void android.widget.ImageView.setOnClickListener(android.view.View$OnClickListener)' on a null object reference. What should I do? Thank you
After i Add setOnClickListener(android.view.View$OnClickListener) in activity the apps is crash. the error is Attempt to invoke virtual method 'void android.widget.ImageView.setOnClickListener(android.view.View$OnClickListener)' on a null object reference. What should I do? Thank you