Gesture Utils

!MultiGestureDetector

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0.MultiGestureDetector.java

package com.martinrgb.multitask;

import android.content.Context;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Toast;

/**
 * Created by MartinRGB on 2017/9/11.
 */

public class MultiGestureDetector implements GestureDetector.OnGestureListener,GestureDetector.OnDoubleTapListener,View.OnTouchListener{

    private static final int SWIPE_DISTANCE_THRESHOLD = 200;
    private static final int SWIPE_VELOCITY_THRESHOLD = 1500;
    private static final int LOG_TYPE_I = 0;
    private static final int LOG_TYPE_E = 1;
    private static final String TAG = "MultiGestureDetector";
    private GestureDetector mGestureDetector;

    //创建监听器借口
    public interface SimpleGestureListener
    {
        void onDown(MotionEvent event);
        void onLongPress(MotionEvent event);
        void onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY);
        void onSwipeLeft(float velocity);
        void onSwipeRight(float velocity);
        void onSwipeBottom(float velocity);
        void onSwipeTop(float velocity);
        void onUp(MotionEvent event);
        void onDoubleTap(MotionEvent event);
    }
    //实例化一个监听器的数值为空
    private SimpleGestureListener mSimpleGestureListener = null;

    //添加监听器注册方法
    public void addListener(SimpleGestureListener simpleGestureListener)
    {
        mSimpleGestureListener = simpleGestureListener;
    }

    public MultiGestureDetector(SimpleGestureListener simpleGestureListener) {
        mGestureDetector = new GestureDetector(this);
        mSimpleGestureListener = simpleGestureListener;
    }

    public boolean onDown(MotionEvent event) {
        printTag(TAG,true,LOG_TYPE_I,event);
        //mSimpleGestureListener.onDown(event);
        return true;
    }

    public void onShowPress(MotionEvent event) {
        printTag(TAG,true,LOG_TYPE_I,event);
    }

    public void  onLongPress(MotionEvent event) {
        printTag(TAG,true,LOG_TYPE_I,event);
        mSimpleGestureListener.onLongPress(event);
    }

    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
        printTag(TAG,true,LOG_TYPE_E,null);
        Log.e("SFACT","onScroll" + " Distance X is " + Float.toString(e2.getX() - e1.getX()) + " Distance Y is " + Float.toString(e2.getY() - e1.getY()));
        mSimpleGestureListener.onScroll(e1,e2,e2.getX()-e1.getX(),e2.getY()-e1.getY());
        return true;
    }

    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_DISTANCE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
                    if (diffX > 0) {
                        //onSwipeRight();
                        mSimpleGestureListener.onSwipeRight(velocityX);
                        Log.e("SFACT","Swipe Right,Velocity is" + velocityX);
                    } else {
                        //onSwipeLeft();
                        mSimpleGestureListener.onSwipeLeft(velocityX);
                        Log.e("SFACT","Swipe Left,Velocity is" + velocityX);
                    }
                    result = true;
                }
            }
            else if (Math.abs(diffY) > SWIPE_DISTANCE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
                if (diffY > 0) {
                    // onSwipeBottom();
                    mSimpleGestureListener.onSwipeBottom(velocityY);
                    Log.e("SFACT","Swipe Bottom,Velocity is" + velocityY);
                } else {
                    //onSwipeTop();
                    mSimpleGestureListener.onSwipeTop(velocityY);
                    Log.e("SFACT","Swipe Top,Velocity is" + velocityY);
                }
                result = true;
            }
        } catch (Exception exception) {
            exception.printStackTrace();
        }
        return result;
//        printTag(TAG,true,LOG_TYPE_E,null);
//        return true;
    }


    public boolean onTouch(View v, MotionEvent event) {

        Log.v("ADAM", "ontouch: " + event.getAction());

        if(event.getAction() == 0){
            mSimpleGestureListener.onDown(event);
            Log.v("ADAM", "Down");
        }
        else if (event.getAction() == 1) {
            Log.v("ADAM", "Up");
            mSimpleGestureListener.onUp(event);
        }
        else if (event.getAction() == 2) {
            Log.v("ADAM", "Scroll");
        }

        else if (event.getAction() == MotionEvent.ACTION_CANCEL) {
            Log.v("ADAM", "Cancel");
            mSimpleGestureListener.onUp(event);
        }

        boolean detectedUp = event.getAction() == MotionEvent.ACTION_UP;
        if (!mGestureDetector.onTouchEvent(event) && detectedUp) {
            Log.v("ADAM", "Cancel");
            mSimpleGestureListener.onUp(event);
            return true;
        }
        return true;


//        printTag(TAG,true,LOG_TYPE_I,event);
//        return mGestureDetector.onTouchEvent(event);
    }


    public boolean onSingleTapUp(MotionEvent event) {
        printTag(TAG,true,LOG_TYPE_I,event);

        //mSimpleGestureListener.onUp(event);
        return false;
    }

    @Override
    public boolean onSingleTapConfirmed(MotionEvent event) {
        printTag(TAG,true,LOG_TYPE_I,event);
        return false;
    }

    @Override
    public boolean onDoubleTap(MotionEvent event) {
        printTag(TAG,true,LOG_TYPE_I,event);
        return false;
    }

    @Override
    public boolean onDoubleTapEvent(MotionEvent event) {
        printTag(TAG,true,LOG_TYPE_I,event);
        mSimpleGestureListener.onDoubleTap(event);
        return false;
    }

    private void printTag(String tag,boolean show,int LOGTYPE,MotionEvent event){

        final String suffix;

        if(event == null){
            suffix = "";
        }
        else{
            int X = (int) event.getX();
            int Y = (int) event.getY();
            suffix = " - X: "+X+" Y: "+Y;
        }

        if(show){

            if(LOGTYPE == 0){

                StackTraceElement[] stacktrace = Thread.currentThread().getStackTrace();
                StackTraceElement e = stacktrace[3];//maybe this number needs to be corrected
                String methodName = e.getMethodName();
                Log.i(tag,methodName + suffix);
            }
            else if(LOGTYPE == 1){

                StackTraceElement[] stacktrace = Thread.currentThread().getStackTrace();
                StackTraceElement e = stacktrace[3];//maybe this number needs to be corrected
                String methodName = e.getMethodName();
                Log.e(tag,methodName + suffix);
            }
        }
        else{

        }
    }


}

1.CustomFragment.java

...
  
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstance) {
    View view = inflater.inflate(R.layout.fragment_container, container, false);

    setSpringSystem(view);
    setInteractionListener(view);

    return view;
}  

private void setGestureListener(){
  MultiGestureDetector mMultiGestureDetector = new MultiGestureDetector(new MultiGestureDetector.SimpleGestureListener() {
      @Override
      public void onDown(MotionEvent event) {

      }

      @Override
      public void onLongPress(MotionEvent event) {

      }

      @Override
      public void onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {

      }

      @Override
      public void onSwipeLeft(float velocity) {

      }

      @Override
      public void onSwipeRight(float velocity) {

      }

      @Override
      public void onSwipeBottom(float velocity) {

      }

      @Override
      public void onSwipeTop(float velocity) {

      }

      @Override
      public void onUp(MotionEvent event) {

      }

      @Override
      public void onDoubleTap(MotionEvent event) {

      }
  });

  view.findViewById(R.id.xxxx).setOnTouchListener(mMultiGestureDetector);
}
  
...