package com.android.launcher3.util;
/**
* Created by Michele on 17/03/2017.
*/
import android.content.Context;
import android.util.Log;
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;
private static int fingerCount = 1;
public OnSwipeTouchListener (Context ctx){
gestureDetector = new GestureDetector(ctx, new GestureListener());
}
@Override
public boolean onTouch(View v, MotionEvent event) {
return gestureDetector.onTouchEvent(event);
}
public GestureDetector getGestureDetector(){
return gestureDetector;
}
public int getFingerCount() {
return fingerCount;
}
public static void setFingerCount(int fingerCount) {
OnSwipeTouchListener.fingerCount = fingerCount;
}
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) {
//Do not use this (swipe right)
} else {
//Do not use this (swipe left)
}
result = true;
}
}
else if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
if (diffY > 0) {
if(getFingerCount() > 1){
setFingerCount(1);
onSwipeBottomTwoFingers();
}else {
onSwipeBottom();
}
} else {
if(getFingerCount() > 1) {
setFingerCount(1);
onSwipeTopTwoFingers();
}else {
onSwipeTop();
}
}
result = true;
}
} catch (Exception exception) {
exception.printStackTrace();
}
return result;
}
}
public void onSwipeBottomTwoFingers() {
}
public void onSwipeTopTwoFingers() {
}
public void onSwipeTop() {
}
public void onSwipeBottom() {
}
}