How to get a continuous Touch Event?

Question

My class extends View and I need to get continuous touch events on it.

If I use:

public boolean onTouchEvent(MotionEvent me) {

    if(me.getAction()==MotionEvent.ACTION_DOWN) {
        myAction();
    }
    return true;
}

... the touch event is captured once.

What if I need to get continuous touches without moving the finger? Please, tell me I don't need to use threads or timers. My app is already too much heavy.

Thanks.

Answer 1

Use if(me.getAction() == MotionEvent.ACTION_MOVE). It's impossible to keep a finger 100% completely still on the screen so Action_Move will get called every time the finger moves, even if it's only a pixel or two.

You could also listen for me.getAction() == MotionEvent.ACTION_UP - until that happens, the user must still have their finger on the screen.

Answer 2

Her is the simple code snippet which shows that how you can handle the continues touch event. When you touch the device and hold the touch and move your finder, the Touch Move action performed.

@Override
public boolean onTouchEvent(MotionEvent event) {
    float x = event.getX();
    float y = event.getY();
    if(isTsunami){
    switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
            // Write your code to perform an action on down
            break;
        case MotionEvent.ACTION_MOVE:
            // Write your code to perform an action on contineus touch move
            break;
        case MotionEvent.ACTION_UP:
            // Write your code to perform an action on touch up
            break;
    }
    }
    return true;
}

Answer 3

If I use Rahul's code on a gridview I only get ACTION_DOWN if I first click on the very border of the grid. If I start my finger in the center of the grid ACTION_DOWN is never passed to onTouch. Why is this?