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我希望当我按下按钮 btlento 时相机闪光灯会缓慢闪烁,因为我制作了这些变量:

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

这是带有代码的按钮:

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;

并且另一个按钮必须更快地闪烁,所以我制作了这些其他变量:

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

这些是带有方法的按钮:

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;

现在他们在不停地眨眼,为什么????方法 cameraOn 是:

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

cameraOff 是:

private void cameraOff() {
            // TODO Auto-generated method stub
             parameters.setFlashMode(Parameters.FLASH_MODE_OFF);
             camera.setParameters(parameters);
             camera.release();
             camera = null;
        }
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1 回答 1

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假设counter并且j没有在其他地方修改,您永远不会进入 while 块,它可能应该是:

while(counter<=60)

和:

while(j<60)
于 2012-12-27T22:55:27.540 回答