android - Android でのクリックとタップの違い

Question

[GestureDetector.OnGestureListener][1] クラスにはメソッド [onSingleTapUp(MotionEvent)][2] があります。

Up MotionEvent キューでタップが発生したときに通知されます。

このメソッドには同じ onclick の機能がありますか? このメソッドを使用して、onclick メソッドと同じ動作を実装できますか?

Answer 1

いくつかのテストを行ったところ、答えはYESのようです。onclick の代わりに onSingleTapUp を使用できます。onSingleTapUp メソッドは、ダブルクリックまたはロングクリックの単純なクリックをうまく区別できます。私のテスト：

public class MainFragmentScrollerController
{
    private MainFragment mFragment;
    private GestureDetectorCompat mGestureDetector;

    public MainFragmentScrollerController(MainFragment fragment)
    {
        mFragment = fragment;
        mGestureDetector = new GestureDetectorCompat(mFragment.getActivity(), new GestureListener());
    }

    public void setGestureListener()
    {
        mFragment.myView.setOnTouchListener(new OnTouchListener()
        {
            @Override
            public boolean onTouch(View v, MotionEvent event)
            {
                boolean gestureResult = mGestureDetector.onTouchEvent(event);
                Log.i("GestureListener", "gestureResult = " + gestureResult);
                return gestureResult;
            }
        });
    }

    public class GestureListener extends SimpleOnGestureListener
    {
        private final String TAG = "GestureListener";
        @Override
        public boolean onDown(MotionEvent event)
        {
            Log.d(TAG,"onDown: " + event.toString()); 
            return true;
        }

        @Override
        public boolean onFling(MotionEvent event1, MotionEvent event2, float velocityX, float velocityY)
        {
            Log.d(TAG, "onFling: " + event1.toString()+event2.toString());
            return true;
        }

        @Override
        public boolean onScroll(MotionEvent event1, MotionEvent event2, float distanceX, float distanceY)
        {
            Log.d(TAG, "onScroll: " + event1.toString()+event2.toString());
            return true;
        }

        @Override
        public boolean onSingleTapUp(MotionEvent event)
        {
            Log.d(TAG, "onSingleTapUp: " + event.toString());
            return true;
        }

        @Override
        public void onLongPress(MotionEvent event)
        {
            Log.d(TAG, "onLongPress: " + event.toString());
        }
    }
}

単純なクリックの結果:

09-04 14:20:58.040: D/GestureListener(17689): onDown: MotionEvent { action=ACTION_DOWN, id[0]=0, x[0]=188.71875, y[0]=26.0625, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=34463725, downTime=34463725, deviceId=1, source=0x1002 }
09-04 14:20:58.040: I/GestureListener(17689): gestureResult = true
09-04 14:20:58.100: I/GestureListener(17689): gestureResult = false
09-04 14:20:58.130: D/GestureListener(17689): onSingleTapUp: MotionEvent { action=ACTION_UP, id[0]=0, x[0]=188.71875, y[0]=26.0625, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=34463811, downTime=34463725, deviceId=1, source=0x1002 }
09-04 14:20:58.130: I/GestureListener(17689): gestureResult = true

長いクリックの結果:

09-04 14:22:12.520: D/GestureListener(17689): onDown: MotionEvent { action=ACTION_DOWN, id[0]=0, x[0]=179.22656, y[0]=41.0625, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=34538199, downTime=34538199, deviceId=1, source=0x1002 }
09-04 14:22:12.520: I/GestureListener(17689): gestureResult = true
09-04 14:22:12.560: I/GestureListener(17689): gestureResult = false
09-04 14:22:12.930: I/GestureListener(17689): gestureResult = false
09-04 14:22:12.950: I/GestureListener(17689): gestureResult = false
09-04 14:22:13.010: I/GestureListener(17689): gestureResult = false
09-04 14:22:13.100: I/GestureListener(17689): gestureResult = false
09-04 14:22:13.130: I/GestureListener(17689): gestureResult = false
09-04 14:22:13.150: I/GestureListener(17689): gestureResult = false
09-04 14:22:13.180: I/GestureListener(17689): gestureResult = false
09-04 14:22:13.200: D/GestureListener(17689): onLongPress: MotionEvent { action=ACTION_DOWN, id[0]=0, x[0]=179.22656, y[0]=41.0625, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=34538199, downTime=34538199, deviceId=1, source=0x1002 }
09-04 14:22:13.230: I/GestureListener(17689): gestureResult = false

フリングの結果:

09-04 14:24:09.650: D/GestureListener(17689): onDown: MotionEvent { action=ACTION_DOWN, id[0]=0, x[0]=332.15625, y[0]=2.625, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=34655337, downTime=34655337, deviceId=1, source=0x1002 }
09-04 14:24:09.650: I/GestureListener(17689): gestureResult = true
09-04 14:24:09.690: D/GestureListener(17689): onScroll: MotionEvent { action=ACTION_DOWN, id[0]=0, x[0]=332.15625, y[0]=2.625, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=34655337, downTime=34655337, deviceId=1, source=0x1002 }MotionEvent { action=ACTION_MOVE, id[0]=0, x[0]=331.9604, y[0]=-72.36835, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=2, eventTime=34655368, downTime=34655337, deviceId=1, source=0x1002 }
09-04 14:24:09.690: I/GestureListener(17689): gestureResult = true
09-04 14:24:09.710: D/GestureListener(17689): onScroll: MotionEvent { action=ACTION_DOWN, id[0]=0, x[0]=332.15625, y[0]=2.625, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=34655337, downTime=34655337, deviceId=1, source=0x1002 }MotionEvent { action=ACTION_MOVE, id[0]=0, x[0]=337.91425, y[0]=-124.40411, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=2, eventTime=34655385, downTime=34655337, deviceId=1, source=0x1002 }
09-04 14:24:09.710: I/GestureListener(17689): gestureResult = true
09-04 14:24:09.730: D/GestureListener(17689): onFling: MotionEvent { action=ACTION_DOWN, id[0]=0, x[0]=332.15625, y[0]=2.625, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=34655337, downTime=34655337, deviceId=1, source=0x1002 }MotionEvent { action=ACTION_UP, id[0]=0, x[0]=337.91425, y[0]=-124.40411, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=34655414, downTime=34655337, deviceId=1, source=0x1002 }
09-04 14:24:09.730: I/GestureListener(17689): gestureResult = true