尝试用onClick改变相机的闪光速度

Question

我想当我按下按钮blento相机闪光灯缓慢闪烁为此我设置了这些变量:

int counter = 1;
int deloy = 2000;
int poriod = 2000;
int deloy1 = 1000;
int poriod1 = 2000;

这个按钮的代码是:

case R.id.btlento:
        do{
            cameraOn();
            Timer timer = new Timer();
            timer.scheduleAtFixedRate(new TimerTask() {
                @Override
                public void run() {
                    // TODO Auto-generated method stub
                    cameraOff();
                    counter = counter+1;
                }
            },deloy1,poriod1);
            Timer timer2 = new Timer();
            timer2.scheduleAtFixedRate(new TimerTask() {
                @Override
                public void run() {
                    // TODO Auto-generated method stub
                    cameraOn();
                }
            },deloy,poriod);
                }while(counter>=60);
        break;

另一个按钮必须闪烁得更快，所以我做了这些其他变量:

int j = 1;
int delay = 600;
int period = 600;
int delay1 = 300;
int period1 = 600;

这个按钮的方法是:

case R.id.btrapid:
        do{
            cameraOn();
            Timer timer = new Timer();
            timer.scheduleAtFixedRate(new TimerTask() {
                @Override
                public void run() {
                    // TODO Auto-generated method stub
                    cameraOff();
                    j = j+1;
                }
            },delay1,period1);
            Timer timer2 = new Timer();
            timer2.scheduleAtFixedRate(new TimerTask() {
                @Override
                public void run() {
                    // TODO Auto-generated method stub
                    cameraOn();
                }
            },delay,period);
                }while(j>=5);
        break;

现在他们不停地眨眼，为什么????cameraOn方法是:

private void cameraOn() {
            // TODO Auto-generated method stub
             camera = Camera.open();
             parameters = camera.getParameters();
             parameters.setFlashMode(Parameters.FLASH_MODE_TORCH);
             camera.setParameters(parameters);
        }

和cameraOff是:

private void cameraOff() {
            // TODO Auto-generated method stub
             parameters.setFlashMode(Parameters.FLASH_MODE_OFF);
             camera.setParameters(parameters);
             camera.release();
             camera = null;
        }

Answer 1

假设counter和j没有在其他地方修改，您永远不会输入while块，它应该是:

while(counter<=60)

:

while(j<60)