CODEWITHSUNDEEP
androidtouch-eventandroid-handlerlong-presspostdelayed
stumped
stumped

Reputation: 3293

Detecting long presses in Android

I'm trying to detect a long press in Android. GestureDetector is deprecated, so I was trying to use Handlers. But handler isn't recognizing postDelayed or removeCallbacks. It Cannot resolve method for either. 

    final Handler handler = new Handler() {
        @Override
        public void publish(LogRecord record) {

        }

        @Override
        public void flush() {

        }

        @Override
        public void close() throws SecurityException {

        }
    };

    Runnable longPressed = new Runnable() {
        @Override
        public void run() {
            Log.d("run", "long pressed");
        }
    };

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        switch(event.getAction()){
            case MotionEvent.ACTION_DOWN:
                handler.postDelayed(longPressed, 500);
                break;
            case MotionEvent.ACTION_MOVE:
                handler.removeCallbacks(longPressed);
                break;
            case MotionEvent.ACTION_UP:
                handler.removeCallbacks(longPressed);
                break;
        }

        return super.onTouchEvent(event);
    }
}

Upvotes: 1

Views: 148

Answers (3)

Chetan Mehra
Chetan Mehra

Reputation: 199

You can use Handler if you don't want to use Gesture Detector.

//Declare this flag globally
boolean goneFlag = false;
//Put this into the class
final Handler handler = new Handler(); 
Runnable mLongPressed = new Runnable() { 
    public void run() { 
        goneFlag = true;
        //Code for long click
    }   
};

//onTouch code
@Override
public boolean onTouch(View v, MotionEvent event) {
    switch (event.getAction()) {    
    case MotionEvent.ACTION_DOWN:
        handler.postDelayed(mLongPressed, 1000);

        break;
    case MotionEvent.ACTION_UP:
        handler.removeCallbacks(mLongPressed);
        if(Math.abs(event.getRawX() - initialTouchX) <= 2 && !goneFlag) {
            //Code for single click
            return false;
        }
        break;
    case MotionEvent.ACTION_MOVE:
        handler.removeCallbacks(mLongPressed);

        break;
    }
    return true;
}

Upvotes: 0

Mahdi-Malv
Mahdi-Malv

Reputation: 19190

GestureDetector is deprecated is not exactly true.
Only the ones Not including Context as constructor parameter are deprecated. Others with context work fine.

final GestureDetector gestureDetector = new GestureDetector(this, new GestureDetector.SimpleOnGestureListener() {
    public void onLongPress(MotionEvent e) {
        Log.e("", "Longpress detected");
    }
});

public boolean onTouchEvent(MotionEvent event) {
    return gestureDetector.onTouchEvent(event);
};

Upvotes: 0

Evin1_
Evin1_

Reputation: 12866

What about View.OnLongClickListener.html?

You would get something like:

yourView.setOnLongClickListener(new View.OnLongClickListener() {
  @Override public boolean onLongClick(View v) {
    // Toast it out!
    return false;
  }
});

Upvotes: 1

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