-1
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Camera cam=Camera.open();
Camera.Parameters pa=cam.getParameters();
float f=pa.getHorizontalViewAngle(); //Returning null value
..........
}
爲什麼返回空值?Camera.Parameters.getHorizontalViewAngle()拋出NullPointerExceptions