public void onSensorChanged(String sensorStr) {
Log.v(TAG, "onSensorChanged : " + sensorStr);
String[] fs = sensorStr.split(",");
if (fs.length == 4) {
acceValusW = Float.parseFloat(fs[0]) * (BASE - 10);
// 获得x轴的值
acceValusX = Float.parseFloat(fs[1]) * (BASE - 10);
// 获得y轴的值
acceValusY = Float.parseFloat(fs[2]) * (BASE - 10);
// 获得z轴的值
acceValusZ = Float.parseFloat(fs[3]) * (BASE - 10);
// 锁定整个SurfaceView
Canvas mCanvas = mSurfaceHolder.lockCanvas();
try {
if (mCanvas != null) {
// 画笔的颜色(红)
mPaint.setColor(Color.RED);
// 画X轴的点
mCanvas.drawPoint(x, (int) (BASE + acceValusX), mPaint);
// 画笔的颜色(绿)
mPaint.setColor(Color.GREEN);
// 画Y轴的点
mCanvas.drawPoint(x, (int) (BASE * 2 + acceValusY), mPaint);
// 画笔的颜色(蓝)
mPaint.setColor(Color.CYAN);
// 画Z轴的点
mCanvas.drawPoint(x, (int) (BASE * 3 + acceValusZ), mPaint);
// 画笔的颜色(huang)
mPaint.setColor(Color.WHITE);
// 画W轴的点
mCanvas.drawPoint(x, (int) (BASE * 4 + acceValusW), mPaint);
// 横坐标+1
x++;
// 如果已经画到了屏幕的最右边
// if (x > getWindowManager().getDefaultDisplay().getWidth()) {
if (x > mCanvas.getWidth()) {
x = 0;
// 清屏
mCanvas.drawColor(Color.BLACK);
}
// 绘制完成，提交修改
mSurfaceHolder.unlockCanvasAndPost(mCanvas);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (mCanvas != null) {
// 重新锁一次
mSurfaceHolder.lockCanvas(new Rect(0, 0, 0, 0));
mSurfaceHolder.unlockCanvasAndPost(mCanvas);
}
}
}
}
void myDraw() {
float width, height;
width = getMeasuredWidth();
height = getMeasuredHeight();
canvas = holder.lockCanvas();
canvas.drawColor(Color.GREEN);
canvas.drawPath(path, paint);
holder.unlockCanvasAndPost(canvas);
}
public void mDraw() {
mCanvas = mHolder.lockCanvas(); // 获得画布对象,开始对画布画画
mCanvas.drawColor(++i); // 设置画布颜色为黑色
canvasMethod(mCanvas); // 调用自定义的方法,主要是在传进去的画布对象上画画
mHolder.unlockCanvasAndPost(mCanvas); // 把画布显示在屏幕上
}