How to enable touchesMoved() with button action?

Question

I am doing one piano application. There i am using button action to play music. But its not supporting drag functionalities. I have used touchesMoved(),touchBegan() methods also . But nothigh is working.Can anyone help me, please?

Answer 1

Button supports drag functionality. You should add your target by below control events.

[button addTarget:target action:@selector(action1) forControlEvents:UIControlEventTouchDragInside];
[button addTarget:target action:@selector(action2) forControlEvents:UIControlEventTouchDragOutside];
[button addTarget:target action:@selector(action3) forControlEvents:UIControlEventTouchDragExit];
[button addTarget:target action:@selector(action4) forControlEvents:UIControlEventTouchDragEnter];

Implement proper actions for each event and it should identify proper drag event.