I want to detect fling motion in a block of the screen. I am using the following code for that.
public class MyinfoActivity extends Activity implements OnGestureListener {
@Override
public void onCreate(Bundle savedInstanceState) {
..........
..........
gestureScanner = new GestureDetector(this);
resBlock = (TableRow) findViewById(R.id.ResBlock);
gestureScanner = new GestureDetector(this);
}
@Override
public boolean onTouchEvent(MotionEvent me){
Log.d(null,"Touch");
if (gestureScanner.onTouchEvent(me))
return gestureScanner.onTouchEvent(me);
else
return false;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2,
float velocityX, float velocityY) {
Log.d(null,"Fling");
............
............
}
@Override
public boolean onDown(MotionEvent arg0) {
return false;
}
@Override
public void onLongPress(MotionEvent e) {}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2,
float distanceX, float distanceY) {
return false;
}
@Override
public void onShowPress(MotionEvent e) {}
@Override
public boolean onSingleTapUp(MotionEvent e) {
return false;
}
}
It is detecting the TouchEvent, but it is not detecting any fling motion. What is the problem in my code?
I used the following code and solved the issue.
public class MyinfoActivity extends Activity {
private GestureDetector gestureScanner;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.myinfotrackerinner);
gestureScanner = new GestureDetector(this,simpleOnGestureListener);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
return gestureScanner.onTouchEvent(event);
}
GestureDetector.SimpleOnGestureListener simpleOnGestureListener =
new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onDown(MotionEvent event) {
return true;
}
@Override
public boolean onFling(MotionEvent event1, MotionEvent event2,
float velocityX, float velocityY) {
Log.d(null,"Fling");
int dx = (int) (event2.getX() - event1.getX());
// don't accept the fling if it's too short
// as it may conflict with a button push
if (Math.abs(dx) > MAJOR_MOVE
&& Math.abs(velocityX) > Math.abs(velocityY)) {
if (velocityX > 0) {
moveGraph("L");
} else {
moveGraph("R");
}
return true;
} else {
return false;
}
}
};
}