Swipe listeners in Android
Is there something like onLeftSwipeListener and onRightSwipeListener in Android? I want to switch views swiping finger back and forward. I use a FrameLayout and an ImageView inside inside of it.
Its called GestureDetector and SimpleOnGestureListener which has onFling() . Its called fling and not swipe in this context :)
yourView.setOnTouchListner(onThumbTouch );
OnTouchListener onThumbTouch = new OnTouchListener() {
float previouspoint = 0 ;
float startPoint=0;
@Override
public boolean onTouch(View v, MotionEvent event) {
switch(v.getId()) {
case R.id.tvDetailsalaujairiyat: // Give your R.id.sample ...
switch(event.getAction()){
case MotionEvent.ACTION_DOWN:
startPoint=event.getX();
System.out.println("Action down,..."+event.getX());
break;
case MotionEvent.ACTION_MOVE:
break;
case MotionEvent.ACTION_CANCEL:
previouspoint=event.getX();
if(previouspoint > startPoint){
//Right side swipe
}else{
// Left side swipe
}
break;
}
break;
}
return true;
}
};
i have made a small example of swiper in android i would like share the code with you.
Chek this.
//LAYOUT///
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ViewFlipper
android:id="@+id/view_flipper"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center_vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Soy A"
android:textColor="#FFFFFF" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Soy B"
android:textColor="#BBBFFF" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Soy C"
android:textColor="#FFBBFF" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Soy D"
android:textColor="#FFFFAF" />
</ViewFlipper>
</LinearLayout>
///ACTIVITY///
import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ViewFlipper;
public class SwipeActivity extends Activity {
private Animation mInFromRight;
private Animation mOutToLeft;
private Animation mInFromLeft;
private Animation mOutToRight;
private ViewFlipper mViewFlipper;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mViewFlipper = (ViewFlipper) findViewById(R.id.view_flipper);
mViewFlipper.setDisplayedChild(0);
initAnimations();
}
private void initAnimations() {
mInFromRight = new TranslateAnimation(Animation.RELATIVE_TO_PARENT,
+1.0f, Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f);
mInFromRight.setDuration(500);
AccelerateInterpolator accelerateInterpolator = new AccelerateInterpolator();
mInFromRight.setInterpolator(accelerateInterpolator);
mInFromLeft = new TranslateAnimation(Animation.RELATIVE_TO_PARENT,
-1.0f, Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f);
mInFromLeft.setDuration(500);
mInFromLeft.setInterpolator(accelerateInterpolator);
mOutToRight = new TranslateAnimation(Animation.RELATIVE_TO_PARENT,
0.0f, Animation.RELATIVE_TO_PARENT, +1.0f,
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f);
mOutToRight.setDuration(500);
mOutToRight.setInterpolator(accelerateInterpolator);
mOutToLeft = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, -1.0f,
Animation.RELATIVE_TO_PARENT, 0.0f,
Animation.RELATIVE_TO_PARENT, 0.0f);
mOutToLeft.setDuration(500);
mOutToLeft.setInterpolator(accelerateInterpolator);
final GestureDetector gestureDetector;
gestureDetector = new GestureDetector(new MyGestureDetector());
mViewFlipper.setOnTouchListener(new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if (gestureDetector.onTouchEvent(event)) {
return false;
} else {
return true;
}
}
});
}
private class MyGestureDetector extends SimpleOnGestureListener {
private static final int SWIPE_MIN_DISTANCE = 120;
private static final int SWIPE_MAX_OFF_PATH = 250;
private static final int SWIPE_THRESHOLD_VELOCITY = 200;
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
System.out.println(" in onFling() :: ");
if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)
return false;
if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
mViewFlipper.setInAnimation(mInFromRight);
mViewFlipper.setOutAnimation(mOutToLeft);
mViewFlipper.showNext();
} else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
mViewFlipper.setInAnimation(mInFromLeft);
mViewFlipper.setOutAnimation(mOutToRight);
mViewFlipper.showPrevious();
}
return super.onFling(e1, e2, velocityX, velocityY);
}
}
}
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