swipe from left to right and right to left in android

Question

I have SwipeActivity. when I swipe from right to left, I want to go activity B and when swipe left to right go to activity C. but my code didn't work. please help me.

my SwipeActivity is:

public class SwipeActivity extends Activity {

public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); final GestureDetector gestureDetector = new GestureDetector(new GestureListener()); View mainview = (View) findViewById(R.id.mainView); // Set the touch listener for the main view to be our custom gesture listener mainview.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { if (gestureDetector.onTouchEvent(event)) { return true; } return false; } }); } 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() { Intent in = new Intent(SwipeActivity.this,page1Activity.class); startActivity(in); } public void onSwipeLeft() { Intent in = new Intent(SwipeActivity.this,page2Activity.class); startActivity(in); }

}

What behavior do you observe? If your application is crashing or you get an Exception, what does your logcat say? — Bryan Herbst
– Bryan Herbst, Commented Nov 15, 2012 at 15:05
Did you try stepping through with the debugger? I'd verify that the view you are setting the on touch listener to is actually firing on touch. — Jim Baca
– Jim Baca, Commented Nov 15, 2012 at 15:12

moskis · Accepted Answer · 2012-11-15 15:26:08Z

I think that you can use fragments, and a ViewPager that contains the fragment inside the activity.

Check this is example: http://thepseudocoder.wordpress.com/2011/10/05/android-page-swiping-using-viewpager/

I hope that it ll be usefull for you.

Munish Kapoor · Accepted Answer · 2012-11-15 16:55:26Z

You should use Android ViewPager for better UI experience and use Fragment instead of activity. you can save the more time using ViewPager instead of developing custom swipe. have a look on to following examples.

1. ViewPager Tab Indicator

2. ViewPager Circle Style

Thanks

Ercan · Accepted Answer · 2012-11-15 15:12:11Z

Try using onTouch listener. use its onDown and on up events. take the coordinate in onDown and onUp then compare them. if xUp< xDown = leftswipe and the opposite for left swipe.(do not forget to adjust sensivity by adding a margin like : (if distance (upX,downX)>50))

here is a sample code :

yourView.setOnTouchListener(new OnTouchListener() { int xDown=0; @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub if(event.getAction()==MotionEvent.ACTION_DOWN){ xDown= event.getRawX(); } if(event.getAction()==MotionEvent.ACTION_MOVE){ } if(event.getAction()==MotionEvent.ACTION_UP){ if(Math.abs(xDown-evet.getRawX())>50) if(xDown-evet.getRawX()>0){ //left } else{ //right } } }

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