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遇到一些错误，不知道该怎么办，请帮忙。

The method getX() in the type MotionEvent is not applicable for the arguments (int) 
The method getY() in the type MotionEvent is not applicable for the arguments (int) 
The method getX() in the type MotionEvent is not applicable for the arguments (int) 
The method getY() in the type MotionEvent is not applicable for the arguments (int) 
The method getPointerCount() is undefined for the type MotionEvent  
The method getPointerId(int) is undefined for the type MotionEvent  
ACTION_POINTER_DOWN cannot be resolved or is not a field    
The method getX() in the type MotionEvent is not applicable for the arguments (int) 
The method getY() in the type MotionEvent is not applicable for the arguments (int) 
ACTION_POINTER_UP cannot be resolved or is not a field  MultiTouchHandler.java  
ACTION_MASK cannot be resolved or is not a field    
ACTION_POINTER_ID_MASK cannot be resolved or is not a field 
ACTION_POINTER_ID_SHIFT cannot be resolved or is not a field
The method getPointerId(int) is undefined for the type MotionEvent

编码：

public boolean onTouch(View v, MotionEvent event) {  
    synchronized (this) {  
        int action = event.getAction() & MotionEvent.ACTION_MASK;  
        int pointerIndex = (event.getAction() & MotionEvent.ACTION_POINTER_ID_MASK) >>   MotionEvent.ACTION_POINTER_ID_SHIFT;  
        int pointerId = event.getPointerId(pointerIndex);   

        switch (action) {
        case MotionEvent.ACTION_DOWN:
        case MotionEvent.ACTION_POINTER_DOWN:
            touchEvent = touchEventPool.newObject();
            touchEvent.type = TouchEvent.TOUCH_DOWN;
            touchEvent.pointer = pointerId;
            touchEvent.x = touchX[pointerId] = (int) (event
                    .getX(pointerIndex) * scaleX);
            touchEvent.y = touchY[pointerId] = (int) (event
                    .getY(pointerIndex) * scaleY);
            isTouched[pointerId] = true;
            touchEventsBuffer.add(touchEvent);
            break;

        case MotionEvent.ACTION_UP:
        case MotionEvent.ACTION_POINTER_UP:
        case MotionEvent.ACTION_CANCEL:
            touchEvent = touchEventPool.newObject();
            touchEvent.type = TouchEvent.TOUCH_UP;
            touchEvent.pointer = pointerId;
            touchEvent.x = touchX[pointerId] = (int) (event
                    .getX(pointerIndex) * scaleX);
            touchEvent.y = touchY[pointerId] = (int) (event
                    .getY(pointerIndex) * scaleY);
            isTouched[pointerId] = false;
            touchEventsBuffer.add(touchEvent);
            break;

        case MotionEvent.ACTION_MOVE:
            int pointerCount = event.getPointerCount();
            for (int i = 0; i < pointerCount; i++) {
                pointerIndex = i;
                pointerId = event.getPointerId(pointerIndex);

                touchEvent = touchEventPool.newObject();
                touchEvent.type = TouchEvent.TOUCH_DRAGGED;
                touchEvent.pointer = pointerId;
                touchEvent.x = touchX[pointerId] = (int) (event
                        .getX(pointerIndex) * scaleX);
                touchEvent.y = touchY[pointerId] = (int) (event
                        .getY(pointerIndex) * scaleY);
                touchEventsBuffer.add(touchEvent);
            }
            break;
        }

        return true;
    }
}
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1 回答 1

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读取第一个错误：

The method getX() in the type MotionEvent is not applicable for the arguments (int)

这表示不能使用 int 作为参数调用 MotionEvent 上的 getX()，即 getX(1)

在您的代码中，我可以看到：

touchEvent.x = touchX[pointerId] = (int) (event.getX(pointerIndex) * scaleX);

如果您看到您正在调用 getX(pointerIndex)。这是一个编译错误。

如果您阅读其他错误并查看您的代码，您应该能够找到它们。

我的建议：获取一个 IDE（请参阅我应该为 Android 应用程序使用哪个 Eclipse 版本？以帮助选择），所有这些问题都将以红色突出显示。

于 2012-07-04T07:32:53.923 回答