在摄像机视图上显示中心的十字标记作为相机移动时移动的摄像机视图

Question

我想在中心的相机视图上放置一个叠加作为焦点，它会随着相机的方向移动！

我已经完成了叠加，但它没有进入中心，移动它就消失了！

代码：

public class CrossLayout extends View implements LocationListener, SensorEventListener
{
//...

...//

public void onSensorChanged(SensorEvent evt) {
            int type=evt.sensor.getType();

            /float vals[] = evt.values;
    float localDirection;
    if(evt.sensor.getType() == Sensor.TYPE_ORIENTATION)
    {
        float tmp = vals[0];
        tmp += 90;
        if(tmp > 360)
            tmp -= 360;

        direction =(float) ((tmp * (float)0.05) + (direction * (1.0 - (float)0.05)));
        /
        }
}
public void onDraw(Canvas c)
{
    //Log.e("Spec","Updating "+arViews.size()+" views");
    //long time = System.currentTimeMillis();

        Paint p = new Paint();
        p.setColor(Color.WHITE);
        c.drawCircle(direction,(float) inclination,10,p);
        c.drawText("Compass:"+String.valueOf(direction), 20, 20, p);

        c.drawText("Inclination"+String.valueOf(inclination), 150, 20, p);


    //Log.e("Spec","Took "+(System.currentTimeMillis() - time)+" seconds");
}
}