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April 1, 2014 15:25
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<?xml version="1.0" encoding="utf-8"?> | |
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" | |
android:layout_width="match_parent" | |
android:layout_height="match_parent"> | |
<View | |
android:layout_width="match_parent" | |
android:layout_height="200dp" | |
android:background="#FF0000" | |
android:id="@+id/myView"/> | |
</RelativeLayout> |
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package com.example.SlidingGestureExample; | |
import android.app.Activity; | |
import android.os.Bundle; | |
import android.view.View; | |
public class MyActivity extends Activity { | |
@Override | |
public void onCreate(Bundle savedInstanceState) { | |
super.onCreate(savedInstanceState); | |
setContentView(R.layout.my_activity); | |
View myView = (View) findViewById(R.id.myView); | |
myView.setOnTouchListener(new OnSlidingTouchListener(this) { | |
@Override | |
public boolean onSlideLeft() { | |
// do something | |
return true; | |
} | |
@Override | |
public boolean onSlideRight() { | |
// do something | |
return true; | |
} | |
@Override | |
public boolean onSlideUp() { | |
// do something | |
return true; | |
} | |
@Override | |
public boolean onSlideDown() { | |
// do something | |
return true; | |
} | |
}); | |
} | |
} |
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package com.example.SlidingGestureExample; | |
import android.content.Context; | |
import android.util.Log; | |
import android.view.GestureDetector; | |
import android.view.GestureDetector.SimpleOnGestureListener; | |
import android.view.MotionEvent; | |
import android.view.View; | |
import android.view.View.OnTouchListener; | |
public class OnSlidingTouchListener implements OnTouchListener { | |
private final GestureDetector gestureDetector; | |
public OnSlidingTouchListener(Context context){ | |
gestureDetector = new GestureDetector(context, new GestureListener()); | |
} | |
public boolean onTouch(View v, MotionEvent event) { | |
return gestureDetector.onTouchEvent(event); | |
} | |
private final class GestureListener extends SimpleOnGestureListener { | |
private final String TAG = GestureListener.class.getSimpleName(); | |
private static final int SLIDE_THRESHOLD = 100; | |
@Override | |
public boolean onDown(MotionEvent e) { | |
return true; | |
} | |
@Override | |
public boolean onSingleTapConfirmed(MotionEvent e) { | |
return onClick(); | |
} | |
@Override | |
public void onLongPress(MotionEvent e) { | |
onLongClick(); | |
} | |
@Override | |
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { | |
try { | |
float deltaY = e2.getY() - e1.getY(); | |
float deltaX = e2.getX() - e1.getX(); | |
if (Math.abs(deltaX) > Math.abs(deltaY)) { | |
if (Math.abs(deltaX) > SLIDE_THRESHOLD) { | |
if (deltaX > 0) { | |
// the user made a sliding right gesture | |
return onSlideRight(); | |
} else { | |
// the user made a sliding left gesture | |
return onSlideLeft(); | |
} | |
} | |
} else { | |
if (Math.abs(deltaY) > SLIDE_THRESHOLD) { | |
if (deltaY > 0) { | |
// the user made a sliding down gesture | |
return onSlideDown(); | |
} else { | |
// the user made a sliding up gesture | |
return onSlideUp(); | |
} | |
} | |
} | |
} catch (Exception exception) { | |
Log.e(TAG, exception.getMessage()); | |
} | |
return false; | |
} | |
} | |
public boolean onClick() { | |
return false; | |
} | |
public boolean onLongClick() { | |
return false; | |
} | |
public boolean onSlideRight() { | |
return false; | |
} | |
public boolean onSlideLeft() { | |
return false; | |
} | |
public boolean onSlideUp() { | |
return false; | |
} | |
public boolean onSlideDown() { | |
return false; | |
} | |
} |
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