Google Glass GDK Tap Gesture

Question

由Google提供的GDK和示例代碼，TAP手勢未被識別爲TAP。每次都以LONG_PRESS的形式返回。下面是代碼：

import com.google.android.glass.touchpad.Gesture; 
import com.google.android.glass.touchpad.GestureDetector; 

public class MainActivity extends Activity { 

Logger log = Logger.getLogger("MainActivity"); 

private GestureDetector mGestureDetector; 
// ... 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // ... 
    mGestureDetector = createGestureDetector(this); 
} 

private GestureDetector createGestureDetector(Context context) { 
GestureDetector gestureDetector = new GestureDetector(context); 
    //Create a base listener for generic gestures 
    gestureDetector.setBaseListener(new GestureDetector.BaseListener() { 
     @Override 
     public boolean onGesture(Gesture gesture) { 
      log.info(gesture.name()); 
      if (gesture == Gesture.TAP) { 
       // do something on tap 
       return true; 
      } else if (gesture == Gesture.TWO_TAP) { 
       // do something on two finger tap 
       return true; 
      } else if (gesture == Gesture.SWIPE_RIGHT) { 
       // do something on right (forward) swipe 
       return true; 
      } else if (gesture == Gesture.SWIPE_LEFT) { 
       // do something on left (backwards) swipe 
       return true; 
      } 
      return false; 
     } 
    }); 
    gestureDetector.setFingerListener(new GestureDetector.FingerListener() { 
     @Override 
     public void onFingerCountChanged(int previousCount, int currentCount) { 
      // do something on finger count changes 
     } 
    }); 
    gestureDetector.setScrollListener(new GestureDetector.ScrollListener() { 
     @Override 
     public boolean onScroll(float displacement, float delta, float velocity) { 
      // do something on scrolling 
     } 
    }); 
    return gestureDetector; 
} 

/* 
* Send generic motion events to the gesture detector 
*/ 
@Override 
public boolean onGenericMotionEvent(MotionEvent event) { 
    if (mGestureDetector != null) { 
     return mGestureDetector.onMotionEvent(event); 
    } 
    return false; 
} 

}

我失去了一些東西在這裏或者這是一個錯誤？

Answer 1

從GDK複製並粘貼GestureDetector代碼並修改它就是您應該需要做的所有事情。如果它是雙擊工作，那麼我會懷疑你可能在Glass上遇到了一些硬件問題。

你有沒有嘗試做一個Toast的Gesture.TAP？也許TAP和LONG PRESS是一樣的？

當您點擊Glass時，以下代碼將調用generateCard（）。

private GestureDetector createGestureDetector(Context context) { 
     GestureDetector gestureDetector = new GestureDetector(context); 
      //Create a base listener for generic gestures 
      gestureDetector.setBaseListener(new GestureDetector.BaseListener() { 
       @Override 
       public boolean onGesture(Gesture gesture) { 
        if (gesture == Gesture.TAP) { // On Tap, generate a new number 
         generateCard(); 
         return true; 
        } else if (gesture == Gesture.TWO_TAP) { 
         // do something on two finger tap 
         return true; 
        } else if (gesture == Gesture.SWIPE_RIGHT) { 
         // do something on right (forward) swipe 
         return true; 
        } else if (gesture == Gesture.SWIPE_LEFT) { 
         // do something on left (backwards) swipe 
         return true; 
        } 
        return false; 
       } 
      }); 
      gestureDetector.setFingerListener(new GestureDetector.FingerListener() { 
       @Override 
       public void onFingerCountChanged(int previousCount, int currentCount) { 
        // do something on finger count changes 
       } 
      }); 
      gestureDetector.setScrollListener(new GestureDetector.ScrollListener() { 
       @Override 
       public boolean onScroll(float displacement, float delta, float velocity) { 
        // do something on scrolling 

        return false; 
       } 
      }); 
      return gestureDetector; 
     } 

     /* 
     * Send generic motion events to the gesture detector 
     */ 
     @Override 
     public boolean onGenericMotionEvent(MotionEvent event) { 
      if (mGestureDetector != null) { 
       return mGestureDetector.onMotionEvent(event); 
      } 
      return false; 
     } 

Answer 2

我和你有同樣的問題，我的答案可能很奇怪，但我避免使用開關而不是if else結構。此外，通過這個新代碼，您將能夠捕獲其餘的手勢。

我希望它能幫助你。

private GestureDetector createGestureDetector(Context context){ 
    GestureDetector gestureDetector = new GestureDetector(context); 
    //Create a base listener for generic gestures 
    gestureDetector.setBaseListener(new GestureDetector.BaseListener() { 
     @Override 
     public boolean onGesture(Gesture gesture) { 
      Log.e(TAG,"gesture = " + gesture); 
      switch (gesture) { 
       case TAP: 
        Log.e(TAG,"TAP called."); 
        handleGestureTap(); 
        break; 
       case LONG_PRESS: 
        Log.e(TAG,"LONG_PRESS called."); 
        return true; 
       case SWIPE_DOWN: 
        Log.e(TAG,"SWIPE_DOWN called."); 
        return true; 
       case SWIPE_LEFT: 
        Log.e(TAG,"SWIPE_LEFT called."); 
        return true; 
       case SWIPE_RIGHT: 
        Log.e(TAG,"SWIPE_RIGHT called."); 
        return true; 
       case SWIPE_UP: 
        Log.e(TAG,"SWIPE_UP called."); 
        return true; 
       case THREE_LONG_PRESS: 
        Log.e(TAG,"THREE_LONG_PRESS called."); 
        return true; 
       case THREE_TAP: 
        Log.e(TAG,"THREE_TAP called."); 
        return true; 
       case TWO_LONG_PRESS: 
        Log.e(TAG,"TWO_LONG_PRESS called."); 
        return true; 
       case TWO_SWIPE_DOWN: 
        Log.e(TAG,"TWO_SWIPE_DOWN called."); 
        return true; 
       case TWO_SWIPE_LEFT: 
        Log.e(TAG,"TWO_SWIPE_LEFT called."); 
        return true; 
       case TWO_SWIPE_RIGHT: 
        Log.e(TAG,"TWO_SWIPE_RIGHT called."); 
        return true; 
       case TWO_SWIPE_UP: 
        Log.e(TAG,"TWO_SWIPE_UP called."); 
        return true; 
       case TWO_TAP: 
        Log.e(TAG,"TWO_TAP called."); 
        return true; 
      } 

      return false; 
     } 
    }); 
    gestureDetector.setFingerListener(new com.google.android.glass.touchpad.GestureDetector.FingerListener() { 
     @Override 
     public void onFingerCountChanged(int previousCount, int currentCount) { 
      // do something on finger count changes 
      Log.e(TAG,"onFingerCountChanged()"); 

     } 
    }); 
    gestureDetector.setScrollListener(new com.google.android.glass.touchpad.GestureDetector.ScrollListener() { 
     @Override 
     public boolean onScroll(float displacement, float delta, float velocity) { 
      // do something on scrolling 
      Log.e(TAG,"onScroll()"); 
      return false; 
     } 
    }); 
    return gestureDetector; 
} 

Answer 3

如果你只希望捕獲的UI點擊事件（不使用GestureDetector和一切），在玻璃觸摸板水龍頭被登記爲中心點擊d墊，所以你可以簡單地攔截KEYCODE_DPAD_CENTER關鍵印刷機。

試試這個：

public boolean onKeyDown(int keyCode, KeyEvent event) { 
    if(keyCode == KeyEvent.KEYCODE_DPAD_CENTER){ 
     // The touchpad was tapped 
     return true; 
    } 

    return false; 
}