Brtdku

SOLVED, solution is underneath.

I want to replace buttons for navigation in webview to 2 swipe gestures - left and right swipe. This Android: How to handle right to left swipe gestures link really helped me, but I encountered problem - after implementing this code I was unable to click on links/ or scroll throught loaded webpage in webview activity(I have used 1st answer from possible answers).

Then I found out that in another answer in this question is something similar - how to scroll in listview - https://stackoverflow.com/a/20005481/3272449, but I wasn't able to get it running. In logcat i get this debug info:
http://s27.postimg.org/5qfipgi1v/message.png

This is my OnSwipeTouchListener:

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 = new GestureDetector(new GestureListener());



public boolean onTouch(final View view, final MotionEvent motionEvent) {

    return gestureDetector.onTouchEvent(motionEvent);

}



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();

                    }

                }

            }

        } catch (Exception exception) {

            exception.printStackTrace();

        }

        return result;

    }

}



public void onSwipeRight() {

}



public void onSwipeLeft() {

}



public GestureDetector getGestureDetector(){

    return  gestureDetector;

}

}

And my webview activity(stripped):

public class WebViewActivity extends Activity {

private WebView browser;

    private OnSwipeTouchListener onSwipeTouchListener;

@Override

public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.webview);

            onSwipeTouchListener = new OnSwipeTouchListener() {

public void onSwipeRight() {

    Toast.makeText(WebViewActivity.this, "right", Toast.LENGTH_SHORT).show();

}

public void onSwipeLeft() {

    Toast.makeText(WebViewActivity.this, "left", Toast.LENGTH_SHORT).show();

}

};



browser.setOnTouchListener(onSwipeTouchListener);

} // end of onCreate

@Override

public boolean dispatchTouchEvent(MotionEvent ev){

    onSwipeTouchListener.getGestureDetector().onTouchEvent(ev); 

        return super.dispatchTouchEvent(ev);   

}

} // end of WebViewActivity

How to make left/right swiping, vertical srolling and clicking on links working at the same time?

SOLUTION: Same solved question:
Fling Gesture and Webview in Android

I'm not familiar enough with the GestureDetector to reliably diagnose your problem. One thing you could try is cloning the event:

@Override

public boolean dispatchTouchEvent(MotionEvent ev){

    onSwipeTouchListener.getGestureDetector().onTouchEvent(MotionEvent.obtain(ev)); 

    return super.dispatchTouchEvent(ev);   

}

Failing that another way to approach this is to use onOverScrolled instead of a GestureDetector:

@Override

protected void onOverScrolled (int scrollX, int scrollY, boolean clampedX, boolean clampedY) {

    if (scrollX > (getWidth() + THRESHOLD) && clampedX) {

        onSwipeLeft();

    }

    if (scrollX < - THRESHOLD && clampedX) {

        onSwipeRight();

    }

    super.onOverScrolled(scrollX, scrollY, clampedX, clampedY);

}

This does assume that your content is not normally scrollable sideways though.