بدون عنوان

سلام . این روش کاملا تست شده و درست هست :

برای این کار به دو class نیاز داری :

SwipeInterface که Interface هست .

و همچنین کلاس ActivitySwipeDetector .

و اینکه کلاس Activity که عناصر شما توش هست و مثلا میخواید برا یک عکس یا هرچیز دیگه ای حساسیت به سمت راست یا چپ و ... ایجاد کنید ، باید کلاس SwipeInterface رو Implements کنه .حالا در متودهای override شده left2right و ... میتونید هر اتفاقی که میخواید بیفته رو تعریف کنید . اینجا من یه toast ایجاد کردم .

کدها به شکل زیر هستند :

 import android.view.View;

public interface SwipeInterface {
	public void bottom2top(View v);

    public void left2right(View v);

    public void right2left(View v);

    public void top2bottom(View v);
}


/////////////////////////////////////////////////////////////////////


import android.util.Log;
import android.view.MotionEvent;
import android.view.View;

public class ActivitySwipeDetector implements View.OnTouchListener {

    static final String logTag = "ActivitySwipeDetector";
    private SwipeInterface activity;
    static final int MIN_DISTANCE = 100;
    private float downX, downY, upX, upY;

    public ActivitySwipeDetector(SwipeInterface activity){
        this.activity = activity;
    }

    public void onRightToLeftSwipe(View v){
        Log.i(logTag, "RightToLeftSwipe!");
        activity.right2left(v);
    }

    public void onLeftToRightSwipe(View v){
        Log.i(logTag, "LeftToRightSwipe!");
        activity.left2right(v);
    }

    public void onTopToBottomSwipe(View v){
        Log.i(logTag, "onTopToBottomSwipe!");
        activity.top2bottom(v);
    }

    public void onBottomToTopSwipe(View v){
        Log.i(logTag, "onBottomToTopSwipe!");
        activity.bottom2top(v);
    }

    public boolean onTouch(View v, MotionEvent event) {
        switch(event.getAction()){
        case MotionEvent.ACTION_DOWN: {
            downX = event.getX();
            downY = event.getY();
            return true;
        }
        case MotionEvent.ACTION_UP: {
            upX = event.getX();
            upY = event.getY();

            float deltaX = downX - upX;
            float deltaY = downY - upY;

            // swipe horizontal?
            if(Math.abs(deltaX) > MIN_DISTANCE){
                // left or right
                if(deltaX < 0) { this.onLeftToRightSwipe(v); return true; }
                if(deltaX > 0) { this.onRightToLeftSwipe(v); return true; }
            }
            else {
                Log.i(logTag, "Swipe was only " + Math.abs(deltaX) + " long, need at least " + MIN_DISTANCE);
            }

            // swipe vertical?
            if(Math.abs(deltaY) > MIN_DISTANCE){
                // top or down
                if(deltaY < 0) { this.onTopToBottomSwipe(v); return true; }
                if(deltaY > 0) { this.onBottomToTopSwipe(v); return true; }
            }
            else {
                Log.i(logTag, "Swipe was only " + Math.abs(deltaX) + " long, need at least " + MIN_DISTANCE);
                v.performClick();
            }
        }
        }
        return false;
    }

}

///////////////////////////////////////////////////////////////////////////////





import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.LayoutInflater.Filter;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.LinearLayout;
import android.widget.Toast;

public class ActivityMain extends Activity implements SwipeInterface {
	
	
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		
		LinearLayout l = (LinearLayout)findViewById(R.id.toucher);
		
		ActivitySwipeDetector swipe = new ActivitySwipeDetector(this);
		l.setOnTouchListener(swipe);
		
		
            
		

		
	
	}

	@Override
	public void bottom2top(View v) {
		// TODO Auto-generated method stub
		Toast.makeText(ActivityMain.this, "top", Toast.LENGTH_SHORT).show();
		
	}

	@Override
	public void left2right(View v) {
		// TODO Auto-generated method stub
		switch(v.getId()){
        case R.id.toucher:
            // do your stuff here
        	Toast.makeText(ActivityMain.this, "right", Toast.LENGTH_SHORT).show();
        break;
    }   
		
	}

	@Override
	public void right2left(View v) {
		// TODO Auto-generated method stub
		Toast.makeText(ActivityMain.this, "left", Toast.LENGTH_SHORT).show();
		
	}

	@Override
	public void top2bottom(View v) {
		// TODO Auto-generated method stub
		Toast.makeText(ActivityMain.this, "bottom", Toast.LENGTH_SHORT).show();
		
	}	
	

}