How to add swipe right to open navigation drawer

Question

I have the standard navigation drawer, to open the navigation drawer you need to slide right from the left window. I tried this on diffrent phones and some who has shell on it you can't really slide right (pretty hard). So i want to add a swipe gesture. So when you slide right the drawer will open. I can't find the code to swipe! I tried looking but everything seems blurry.

  DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);

Here is some of my code. Please tell me if you need anything else!! Hope someone can solve this!..

Update: i have found the swipe code and made a class.

 import android.view.GestureDetector; import android.view.GestureDetector.SimpleOnGestureListener; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; public class OnSwipeTouchListener implements OnTouchListener { private final GestureDetector gestureDetector; public OnSwipeTouchListener (Context ctx){ gestureDetector = new GestureDetector(ctx, new GestureListener()); } @Override public boolean onTouch(View v, MotionEvent event) { return gestureDetector.onTouchEvent(event); } private final class GestureListener extends SimpleOnGestureListener { private static final int SWIPE_THRESHOLD = 100; private static final int SWIPE_VELOCITY_THRESHOLD = 100; @Override public boolean onDown(MotionEvent e) { return true; } @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { boolean result = false; try { float diffY = e2.getY() - e1.getY(); float diffX = e2.getX() - e1.getX(); if (Math.abs(diffX) > Math.abs(diffY)) { if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) { if (diffX > 0) { onSwipeRight(); } else { onSwipeLeft(); } } result = true; } else if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) { if (diffY > 0) { onSwipeBottom(); } else { onSwipeTop(); } } result = true; } catch (Exception exception) { exception.printStackTrace(); } return result; } } public void onSwipeRight() { } public void onSwipeLeft() { } public void onSwipeTop() { } public void onSwipeBottom() { } } 

Here is my usage of the code in my MainActivity class

  drawer.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View arg0) { } }); drawer.setOnTouchListener(new OnSwipeTouchListener(MainActivity.this ) { public boolean onSwipeTop() { Toast.makeText(MainActivity.this, "top", Toast.LENGTH_SHORT).show(); return true; } public boolean onSwipeRight() { DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); drawer.openDrawer(GravityCompat.START); return true; } public boolean onSwipeLeft() { DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); drawer.closeDrawer(GravityCompat.START); return true; } public boolean onSwipeBottom() { Toast.makeText(MainActivity.this, "bottom", Toast.LENGTH_SHORT).show(); return true; } }); 

The toast works when i swipe but i tried adding opendrawer and closerdrawer to right and left swipe, but nothing happends..

Answer 1

change the methods from

public void onSwipeRight() {
    }

to

public abstract void onSwipeRight();

...

and make ur class abstract too

public abstract class OnSwipeTouchListener