我需要双击屏幕上的东西。我尝试了以下代码。但它不起作用。没有吐司即将进行双击。这些代码有什么问题?
package a.b.c;
import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector.OnDoubleTapListener;
import android.view.GestureDetector.OnGestureListener;
import android.view.MotionEvent;
import android.widget.Toast;
public class SampleActivity extends Activity implements OnDoubleTapListener,OnGestureListener
{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
@Override
public boolean onDoubleTap(MotionEvent e) {
if(e.getAction()==1)
{
Toast.makeText(getBaseContext(), "onDoubleTap", Toast.LENGTH_LONG).show();
}
return true;
}
@Override
public boolean onDoubleTapEvent(MotionEvent e) {
if(e.getAction()==1)
{
Toast.makeText(getBaseContext(), "onDoubleTapEvent", Toast.LENGTH_LONG).show();
}
return true;
}
@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
if(e.getAction()==1)
{
Toast.makeText(getBaseContext(), "onSingleTapConfirmed", Toast.LENGTH_LONG).show();
}
return true;
}
我还实现了OnGestureListener方法。但是没有效果。请帮忙。
答案 0 :(得分:3)
你在哪里设置doubletap监听器?尝试将此添加到您的oncreate,看看它是否解决了问题
GestureDetector detector = new GestureDetector(this, this);