Android Development using Gesturedetector gesture sliding interface

People accustomed to Apple know that in the app only need to swipe left and right to make the page conversion, but most of the software in Android is only using the return key to change the interface, in fact, Android has long ago to support gestures to update the operation, Just a lot of apps are not used to gesturedetector, the following simply said through the gesturedetector to the interface, the following only give the key code, directly use.

Gesturedetector detector = new Gesturedetector (This, new Gesturedetector.ongesturelistener () {//
@Override
public boolean Ondown (Motionevent e) {
return false;
}

@Override
public void Onshowpress (Motionevent e) {

}

@Override
public boolean onsingletapup (Motionevent e) {
return false;
}

@Override
public boolean onscroll (Motionevent E1, motionevent E2, float Distancex, float distancey) {
return false;
}

@Override
public void Onlongpress (Motionevent e) {

}
@Override
public boolean onfling (Motionevent E1, motionevent E2, float Velocityx,
Float velocityy) {
if (E1.getx ()-e2.getx () > 120) {//sliding left, where you can update the interface, you do whatever you want.
Intent Intent = new Intent ();
Intent.setclass (Mainactivity.this, Two.class);
StartActivity (Intent);
return true;
else if (E1.getx ()-E2.getx () <-120) {//Slide right
MainActivity.this.finish ();
return true;
}
return false;
}
});

@Override
public boolean ontouchevent (Motionevent event) {//must rewrite the Ontouchevent method in the activity in order for the gesture to take effect
Detector.ontouchevent (event);
Return Super.ontouchevent (event);
}

Above is the normal sliding, when you in ListView and so on itself with sliding control using gestures will definitely conflict, the following only gives the simplest and most brutal solution-change the order of the system's Ontouchevent events, rewrite the Dispatchtouchevent method

@Override
public boolean dispatchtouchevent (Motionevent ev) {
This.detector.onTouchEvent (EV);
return super.dispatchtouchevent (EV);
}

The above is through the gesturedetector gesture to the interface between the transformation, the animation study of the children's shoes can be in the interface alternately with animation effect! Gesturedetector also has a lot of features that are interesting to continue to study