如何在活动中使用双击事件?双击事件或长按方法工作(虽然方法被覆盖)我只是在每个方法中放入一个toast消息,但没有结果!你能帮忙吗?
答案 0 :(得分:9)
进行双击的最简单方法是使用GestureDetector检测它。 “技巧”是确保将Activity的onTouchEvent委托给GestureDetector的onTouchEvent:
import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.widget.Toast;
public class MainActivity extends Activity {
private GestureDetector gestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gestureDetector = new GestureDetector(this, new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onDoubleTap(MotionEvent e) {
Toast.makeText(MainActivity.this, "double tap", Toast.LENGTH_SHORT).show();
return true;
}
});
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (gestureDetector.onTouchEvent(event))
return true;
return super.onTouchEvent(event);
}
}