view / motionEvent无法解析为变量滑动
我从另一个stackoverflow问题得到了这段代码:
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
public class OnSwipeTouchListener implements OnTouchListener {
private final GestureDetector gestureDetector = new GestureDetector(new GestureListener());
public boolean onTouch(final View v, final MotionEvent event) {
super.onTouch(view, motionEvent);
return gestureDetector.onTouchEvent(event);
}
private final class GestureListener extends SimpleOnGestureListener {
private static final int SWIPE_THRESHOLD = 100;
private static final int SWIPE_VELOCITY_THRESHOLD = 100;
@Override
public boolean onDown(MotionEvent e) {
return true;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
boolean result = false;
try {
float diffY = e2.getY() - e1.getY();
float diffX = e2.getX() - e1.getX();
if (Math.abs(diffX) > Math.abs(diffY)) {
if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
if (diffX > 0) {
onSwipeRight();
} else {
onSwipeLeft();
}
}
} else {
if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
if (diffY > 0) {
onSwipeBottom();
} else {
onSwipeTop();
}
}
}
} catch (Exception exception) {
exception.printStackTrace();
}
return result;
}
}
public void onSwipeRight() {
}
public void onSwipeLeft() {
}
public void onSwipeTop() {
}
public void onSwipeBottom() {
}
}
将代码粘贴到eclipse中后,我在super.onTouch(view,motionEvent)上出现错误; 。 如果这对您有帮助,编译器合规性级别设置为1.6。 我尝试重新启动日食,删除和导入项目,但没有成功。 谢谢你,新年快乐!
你的变量不匹配:
// You need to use these names * *****
public boolean onTouch(final View v, final MotionEvent event) {
super.onTouch(v, event);
但是你正在实现OnTouchListener,所以真的这条线什么都不做。 你可以删除它。
链接地址: http://www.djcxy.com/p/91241.html上一篇: view/motionEvent cannot be resolved to a variable swipe
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