安卓控制手機點燈

1.手機攝像頭權限獲取

 <!-- 攝像頭、手電筒 -->
        <uses-permission android:name="android.permission.CAMERA"/>

然後設計點擊按鈕

   public void btn_open(View view){//默認初始爲關閉狀態，點擊打開關閉

        // TODO Auto-generated method stub/ TODO Auto-generated method stub
        if(!isopent) {
            camera = Camera.open();
            android.hardware.Camera.Parameters params = camera.getParameters();
            params.setFlashMode(android.hardware.Camera.Parameters.FLASH_MODE_TORCH);
            camera.setParameters(params);
            camera.startPreview(); // 開始亮燈
             isopent = true;
        }
        else{
            camera.stopPreview(); // 關掉亮燈
            camera.release(); // 關掉照相機\
            isopent = false;
        }
    }