[FIXED] startActivityForResults interferes with onTouchListener

Issue

I am new to Java programming but have programmed in other languages. I am having an issue with what I think is losing view focus when returning from a new intent.

The first time I run I want to collect information from the user, so I do

Intent myIntent = new Intent(getApplicationContext(), UserInformation.class);
startActivityForResult(myIntent, UserInformationRequest);

This works fine. I jump to the intent, collect the data and return to onActivityResult. There I want to display the main screen and have the user move an image around, so I setup an onTouchListener

 @Override
  public void onActivityResult(int iRequestCode, int iResultCode, Intent UserInformationData)
   {
    super.onActivityResult(iRequestCode, iResultCode, UserInformationData); 
    
    switch(iRequestCode)
     {
      case UserInformationRequest: setContentView(R.layout.main);
                                   doMoving();                                 
     }
   }


  public void doMoving()
    {
       ivImage =(ImageView) findViewById(R.id.image);
       ivImage.setOnTouchListener(this);  
   }
  
  
  @Override
  public boolean onTouch(View View, MotionEvent event)
   {
    final int X = (int) event.getRawX();
    final int Y = (int) event.getRawY();
    
    switch (event.getAction() & MotionEvent.ACTION_MASK)
     {
      case MotionEvent.ACTION_DOWN: _xDelta = (int) (X - ivImage.getTranslationX());
                                    _yDelta = (int) (Y - ivImage.getTranslationY());
                                    
                                    ivHomeImage.setVisibility(View.VISIBLE);
      break;
   
      case MotionEvent.ACTION_UP: ivHomeImage.setVisibility(View.INVISIBLE);
      break;
   
      case MotionEvent.ACTION_POINTER_DOWN:
      break;
   
      case MotionEvent.ACTION_POINTER_UP:
      break;
    
      case MotionEvent.ACTION_MOVE: ivImage.setTranslationX(X - _xDelta);
                                    ivImage.setTranslationY(Y - _yDelta);
      break;
     }
    return true;
   }
 }

This does not work. If I skip calling the intent and go directly to the onTouchListener the image can be moved.

I do understand why calling the Intent and returning leaves my MainActivity broken.

Solution

You are using setcontentview twice. Doing so will require you to initialize most of the things like buttons,etc again. Its not a good practice. It is recommended to use only once and in onCreate method of your activity. Remove this line:

setContentView(R.layout.main);//on onActivityResult

Answered By - Illegal Argument
Answer Checked By - David Marino (JavaFixing Volunteer)