CODEWITHSUNDEEP
javaandroid
Ravi Rathore
Ravi Rathore

Reputation: 101

How to detect if motion event gesture is performed on the left or right side of the screen?

As in the case with MX player, the left hand vertical swipe gesture controls the brightness and right hand side vertical gesture controls the volume, this same concept i need to apply in my app. So how should i do it?

Upvotes: 2

Views: 177

Answers (1)

ziLk
ziLk

Reputation: 3200

You can listen onTouchEvent like this: 

public class MainActivity extends Activity {
       float x1 = 0;
       float y1 = 0;
       float x2 ;
       float y2 ;
    ...

    @Override
    public boolean onTouchEvent(MotionEvent event){
    int action = MotionEventCompat.getActionMasked(event);

            switch(action) {
                case (MotionEvent.ACTION_DOWN) :
                    x1 = event.getX();
                    y1 = event.getY();
                    return true;
                case (MotionEvent.ACTION_UP) :
                    x2 = event.getX();
                    y2 = event.getY();

                    //if left to right sweep event on screen
                    if (x1 < x2)
                    {
                        Toast.makeText(this, "Left to Right Swap Performed", Toast.LENGTH_LONG).show();
                    }

                    // if right to left sweep event on screen
                    if (x1 > x2)
                    {
                        Toast.makeText(this, "Right to Left Swap Performed", Toast.LENGTH_LONG).show();
                    }

                    // if UP to Down sweep event on screen
                    if (y1 < y2)
                    {
                        Toast.makeText(this, "UP to Down Swap Performed", Toast.LENGTH_LONG).show();
                    }

                    //if Down to UP sweep event on screen
                    if (y1 > y2)
                    {
                        Toast.makeText(this, "Down to UP Swap Performed", Toast.LENGTH_LONG).show();
                    }
                    return true;

Upvotes: 1

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