android 记录触屏坐标,Android获取屏幕触摸坐标
public boolean onTouchEvent(MotionEvent event) {int action = event。getAction();//Log.i("TouchPaint", "Intermediate pointer #" + i);drawPoint(event。getHistoricalX(i), event。getHistoricalY(i),event。getH
public boolean onTouchEvent(MotionEvent event) {
int action = event。getAction();
//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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