Android Multi-Touch funktioniert nicht

Question

Ich habe vor kurzem versucht, Multi-Touch für meine App zu verwenden, aber nicht in der Lage, irgendeine Hilfe mit meinem Problem zu finden krank Post das Bit meines Codes habe ich Probleme mit. ich benutze und alte adk mit einem api-level von 7 ist multi-touch verfügbar für androids running 2.1?

dank

@Override 
    public boolean onTouchEvent(MotionEvent event) { 
      super.onTouchEvent(event); 


      int action = event.getAction() & MotionEvent.ACTION_MASK; 

      switch (action) { 
      case MotionEvent.ACTION_DOWN: { 
       float tx = event.getX(); 
       float ty = event.getY(); 
       if (tx > joystick.getWidth() - joystick.getWidth() && tx < (joystick.getWidth()/3) && ty > getHeight() - joystick.getHeight()) { 
        left(); 
        invalidate(); 
       } 
       if (tx > (joystick.getWidth()/3)*2 && tx < (joystick.getWidth()) && ty > getHeight() - joystick.getHeight()) { 
        right(); 
        invalidate(); 
       } 
       if (tx > getWidth() - button.getWidth() - (button.getWidth()/4) 
         && ty > getHeight() - button.getHeight() 
           - (button.getHeight()/4)) { 
        jump(); 
        invalidate(); 
       }else{jump_true = 0 ; 
       jump_is = true;} 
        break; 
      } 
      case MotionEvent.ACTION_MOVE: { 
       float txm = event.getX(); 
       float tym = event.getY(); 
       if (txm > joystick.getWidth() - joystick.getWidth() && txm < (joystick.getWidth()/3) && tym > getHeight() - joystick.getHeight()) { 
        left(); 
        right = false; 
        invalidate(); 
       } 
       if (txm > getWidth() - button.getWidth() - (button.getWidth()/4) 
         && tym > getHeight() - button.getHeight() 
           - (button.getHeight()/4)) { 
        //jump(); 
        //invalidate(); 
       }else{ 
        //jump_true = 0 ; 
        //jump_is = true; 
       } 
       if (txm > (joystick.getWidth()/3)*2 && txm < (joystick.getWidth()) && tym > getHeight() - joystick.getHeight()) { 
        right(); 
        left = false; 
        invalidate(); 
       } 
       if (txm > getWidth() - button.getWidth() - (button.getWidth()/4) 
         && tym > getHeight() - button.getHeight() 
           - (button.getHeight()/4)) { 
        jump(); 
        invalidate(); 
       }else{jump_true = 0 ; 
       jump_is = true;} 
        break; 
      } 

      case MotionEvent.ACTION_POINTER_DOWN: { 
       float txp = event.getX(); 
       float typ = event.getY(); 
       if (txp > getWidth() - button.getWidth() - (button.getWidth()/4) 
         && typ > getHeight() - button.getHeight() 
           - (button.getHeight()/4)) { 
        jump(); 
        invalidate(); 
       }else{jump_true = 0 ; 
       jump_is = true;} 

       if (txp > joystick.getWidth() - joystick.getWidth() && txp < (joystick.getWidth()/3) && typ > getHeight() - joystick.getHeight()) { 
        left(); 
        right = false; 
        invalidate(); 
       } 
       if (txp > getWidth() - button.getWidth() - (button.getWidth()/4) 
         && typ > getHeight() - button.getHeight() 
           - (button.getHeight()/4)) { 
        //jump(); 
        //invalidate(); 
       }else{ 
        //jump_true = 0 ; 
        //jump_is = true; 
       } 
       if (txp > (joystick.getWidth()/3)*2 && txp < (joystick.getWidth()) && typ > getHeight() - joystick.getHeight()) { 
        right(); 
        left = false; 
        invalidate(); 
       } 
      break; 
      } 
      case MotionEvent.ACTION_POINTER_UP: { 
       touch_up(); 
       invalidate(); 
        break; 
      } 
      case MotionEvent.ACTION_UP: { 
       touch_up(); 
       invalidate(); 
        break; 
      } 
      } 

      return true; 
    } 


    private void touch_up() { 
     left = false; 
     right = false; 
     jump_true = 0 ; 
     jump_is = true; 
    } 

    private void left() { 
     left = true; 
    } 
    private void right(){ 
     right = true; 
    } 
    private void jump() { 
     jump_true=1; 
     jump_done = false; 
    } 

Answer 1

Ja, Multi-Touch für 2.0 oder höher zur Verfügung steht. Siehe http://androidandme.com/2009/10/news/android-2-0-does-indeed-feature-multitouch/.

Verwenden Sie außerdem logcat, um sicherzustellen, dass Ihre Bewegungsereignisse ausgelöst werden.