For most of us newbees, we all know how to simply decorate the xmls but man when it comes to slight animation, we are screwed quite literally ! The latest problem we faced was related to the swipe gesture !
After understanding the whole deal, we thought man, we must make a library where the gestures could be detected and user could simplify its use on the lines of usage of events like - onClickListner / onTouchListner. So we started to code ! But man we love GOOGLE :)
We got link to this post. The guy has done all that we planned to do. Simply awesome!
So without taking those pains, we used his library and it worked like a charm! It gives you the direction of the swipe, the displacement, and whether it was really a swipe or a click ! I think all that one amateur would want !
The link to his blog is -
Awesome Swipe Gesture Implementation
However, we would like to present the jist of the same in our words here in this blog as well.
Steps To Create -
- Copy this project into your workspace - Swipe Me
- Once done, add the .jar file to your library.
- Import the “SwipeMe.OnSwipeListener”.
- Set OnTouchlistener to the view object by sending OnSwipeListener as the listener.
- Override the onSwipe() method and do whatever you want
- Use the getSwipedTo() to know the direction of the swipe
The sample code -
Here is a sample code adding the swipe action and implementing the four direction swipe actions on a button:
import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
// importing the onSwipeListener
import SwipeMe.OnSwipeListener;
public class SwipeMeActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button test = (Button) findViewById(R.id.button1);
//adding onTouch action to test button
//but by sending it the on swipe listener
test.setOnTouchListener(new OnSwipeListener() {
@Override
public void onSwipe(View v, MotionEvent event) {
// TODO Auto-generated method stub
//checking the direction of the swipe
switch(getSwipedTo())
{
case SWIPED_LEFT :
//swiped to left
Toast.makeText(getApplicationContext(), "Swiped Left",
Toast.LENGTH_SHORT).show();
break;
case SWIPED_RIGHT :
//swiped to right
Toast.makeText(getApplicationContext(), "Swiped Right",
Toast.LENGTH_SHORT).show();
break;
case SWIPED_UP :
//swiped up
Toast.makeText(getApplicationContext(), "Swiped Up",
Toast.LENGTH_SHORT).show();
break;
case SWIPED_DOWN :
//swiped down
Toast.makeText(getApplicationContext(), "Swiped Down",
Toast.LENGTH_SHORT).show();
break;
case CLICKED:
//clicked
Toast.makeText(getApplicationContext(), "clicked",
Toast.LENGTH_SHORT).show();
break;
}
}
});
}
}