Estoy usando este código para usar el LED de la cámara como una linterna pero se bloquea cuando se inicia el servicio. Usando sentencias de Log.w () encontré que se detiene en param = camera.getParameters () ;. He incluido el android.permission.CAMERA en mi manifiesto. No entiendo lo que causa el accidente. ¿Cómo puedo arreglar esto?

    public class Flashlight extends Service {

    private Camera camera;
    private Parameters param;
    private final IBinder mBinder = new LocalBinder();

    public class LocalBinder extends Binder {
        Flashlight getService() {
            return Flashlight.this;
        }
    }

    public int onStartCommand(Intent intent, int flags, int startId) {
         Log.w("1","camera.open");
         Camera.open();
         Log.w("1","camera.getParameters");
         param = camera.getParameters();
         Log.w("1","i got camera parameters");
         List<String> pList = camera.getParameters().getSupportedFlashModes();
         if(pList.contains(Parameters.FLASH_MODE_TORCH)){
             param.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
         }
         else if(pList.contains(Parameters.FLASH_MODE_ON)){
             param.setFlashMode(Camera.Parameters.FLASH_MODE_ON);
         }
         param.setFocusMode(Camera.Parameters.FOCUS_MODE_INFINITY);
         try{
             camera.setParameters(param);
             camera.startPreview();
         }
         catch (Exception e){
             Toast.makeText(getApplicationContext(), "Your device does not have flash light support", Toast.LENGTH_SHORT).show();

         }
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        Parameters p=camera.getParameters();
        p.setFlashMode(Parameters.FLASH_MODE_OFF);
        camera.setParameters(p);
        camera.stopPreview();
        camera.release();
    }

    @Override
    public IBinder onBind(Intent intent) {
        return mBinder;
    }
}

este es el LogCcat

12-15 15:44:32.037: W/1(26304): camera.open
12-15 15:44:32.347: W/1(26304): camera.getParameters
12-15 15:44:32.347: D/AndroidRuntime(26304): Shutting down VM
12-15 15:44:32.347: W/dalvikvm(26304): threadid=1: thread exiting with uncaught exception (group=0x40a9e228)
12-15 15:44:32.357: E/AndroidRuntime(26304): FATAL EXCEPTION: main
12-15 15:44:32.357: E/AndroidRuntime(26304): java.lang.RuntimeException: Unable to start service com.bill.deuterh.Flashlight@40dd0978 with Intent { cmp=com.bill.deuterh/.Flashlight }: java.lang.NullPointerException
12-15 15:44:32.357: E/AndroidRuntime(26304):    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2738)
12-15 15:44:32.357: E/AndroidRuntime(26304):    at android.app.ActivityThread.access$1900(ActivityThread.java:139)
12-15 15:44:32.357: E/AndroidRuntime(26304):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1334)
12-15 15:44:32.357: E/AndroidRuntime(26304):    at android.os.Handler.dispatchMessage(Handler.java:99)
12-15 15:44:32.357: E/AndroidRuntime(26304):    at android.os.Looper.loop(Looper.java:154)
12-15 15:44:32.357: E/AndroidRuntime(26304):    at android.app.ActivityThread.main(ActivityThread.java:4945)
12-15 15:44:32.357: E/AndroidRuntime(26304):    at java.lang.reflect.Method.invokeNative(Native Method)
12-15 15:44:32.357: E/AndroidRuntime(26304):    at java.lang.reflect.Method.invoke(Method.java:511)
12-15 15:44:32.357: E/AndroidRuntime(26304):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
12-15 15:44:32.357: E/AndroidRuntime(26304):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
12-15 15:44:32.357: E/AndroidRuntime(26304):    at dalvik.system.NativeStart.main(Native Method)
12-15 15:44:32.357: E/AndroidRuntime(26304): Caused by: java.lang.NullPointerException
12-15 15:44:32.357: E/AndroidRuntime(26304):    at com.bill.deuterh.Flashlight.onStartCommand(Flashlight.java:32)
12-15 15:44:32.357: E/AndroidRuntime(26304):    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2715)
12-15 15:44:32.357: E/AndroidRuntime(26304):    ... 10 more

Finalmente lo resolví después de muchos errores de prueba. Estoy publicando el código correcto para obtener los parámetros, para otros usuarios con este problema.

     camera = Camera.open();
     Camera.Parameters param = camera.getParameters();