获得触摸点的坐标

@Override public boolean onTouchEvent(MotionEvent event) {             int action = event.getAction();             mCurDown = action == MotionEvent.ACTION_DOWN                     || action == MotionEvent.ACTION_MOVE;             int N = event.getHistorySize();             for (int i=0; i<N; i++) {                 //Log.i("TouchPaint", "Intermediate pointer #" + i);                 drawPoint(event.getHistoricalX(i), event.getHistoricalY(i),                         event.getHistoricalPressure(i),                         event.getHistoricalSize(i));             }             drawPoint(event.getX(), event.getY(), event.getPressure(),                     event.getSize());             return true;         }  private void drawPoint(float x, float y, float pressure, float size) {             //Log.i("TouchPaint", "Drawing: " + x + "x" + y + " p="             //        + pressure + " s=" + size);             mCurX = (int)x;             mCurY = (int)y;             mCurPressure = pressure;             mCurSize = size;             mCurWidth = (int)(mCurSize*(getWidth()/3));             if (mCurWidth < 1) mCurWidth = 1;             if (mCurDown && mBitmap != null) {                 int pressureLevel = (int)(mCurPressure*255);                 mPaint.setARGB(pressureLevel, 255, 255, 255);                 mCanvas.drawCircle(mCurX, mCurY, mCurWidth, mPaint);                 mRect.set(mCurX-mCurWidth-2, mCurY-mCurWidth-2,                         mCurX+mCurWidth+2, mCurY+mCurWidth+2);                 invalidate(mRect);             }             mFadeSteps = 0;         } 

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