我正在尝试检测TextView对象的onFling事件。下面的代码非常适合onDown事件,但是无法获取onScroll或onFling事件。有指针吗?
谢谢
package rob.testapp;
import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TextView;
public class MainActivity extends Activity
{
private GestureDetector myGestDetector;
private TextView mainTextView;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
myGestDetector = new GestureDetector(this, new SimpleOnGestureListener()
{
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY)
{
mainTextView.setText("just scroll'n");
return false;
}
@Override
public boolean onDown(MotionEvent e1)
{
mainTextView.setText("on down");
return false;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY)
{
mainTextView.setText("on fling");
return false;
}
});
mainTextView = (TextView)findViewById(R.id.MainText);
mainTextView.setText("Starting app...");
mainTextView.setOnTouchListener(new View.OnTouchListener()
{
@Override
public boolean onTouch(View v, MotionEvent event)
{
myGestDetector.onTouchEvent(event);
return false;
}
});
}
}
布局只是LinearLayout中的TextView。
最佳答案
public boolean onTouch(View v, MotionEvent event)
{
myGestDetector.onTouchEvent(event);
return false;
}
我认为您应该在这里返回true。您通过返回false来拒绝指针向下事件,因此不会收到任何后续事件。