SimpleOnGestureListener永远不会进入onFling(...)方法
问题描述:
嗨SimpleOnGestureListener不能在我的应用程序中工作,这是我如何实现它。也许你可以发现什么是错的。调试显示应用程序永远不会进入onFling(...)方法和gdt.onTouchEvent(event);总是返回false:/ 任何想法??由于SimpleOnGestureListener永远不会进入onFling(...)方法
我的活动类
public class SimpleActivity extends Activity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.simpleLayout);
final ImageView imageView = (ImageView) findViewById(R.id.gggbbb);
imageView.setOnTouchListener(new OnFlingGestureListener() {
@Override
public void onTopToBottom() {
System.out.println("top");
}
@Override
public void onRightToLeft() {
System.out.println("right");
}
@Override
public void onLeftToRight() {
System.out.println("left");
}
@Override
public void onBottomToTop() {
System.out.println("bottom");
}
});
}
}
我的抽象监听
package com.dmd.client.detailsMenus;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
public abstract class OnFlingGestureListener implements OnTouchListener {
private final GestureDetector gdt = new GestureDetector(new GestureListener());
@Override
public boolean onTouch(final View v, final MotionEvent event) {
return gdt.onTouchEvent(event);
}
private final class GestureListener extends SimpleOnGestureListener {
private static final int SWIPE_MIN_DISTANCE = 60;
private static final int SWIPE_THRESHOLD_VELOCITY = 100;
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
if(e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
onRightToLeft();
return true;
} else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
onLeftToRight();
return true;
}
if(e1.getY() - e2.getY() > SWIPE_MIN_DISTANCE && Math.abs(velocityY) > SWIPE_THRESHOLD_VELOCITY) {
onBottomToTop();
return true;
} else if (e2.getY() - e1.getY() > SWIPE_MIN_DISTANCE && Math.abs(velocityY) > SWIPE_THRESHOLD_VELOCITY) {
onTopToBottom();
return true;
}
return false;
}
}
public abstract void onRightToLeft();
public abstract void onLeftToRight();
public abstract void onBottomToTop();
public abstract void onTopToBottom();
}
答
替换此事件:
@Override
public boolean onTouch(final View v, final MotionEvent event) {
gdt.onTouchEvent(event);
return true;
}
它应该工作
它的作品!谢谢 – 2013-11-11 05:21:05