I've used but my app keeps crashing. I'm making a Torch app. Here's my Manifest code:

Error log:

03-28 15:29:23.439 7163-7163/com.Torch E/AndroidRuntime: FATAL EXCEPTION: main
 Process: com.Torch, PID: 7163
 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.Torch/com.Torch.MainActivity}: java.lang.RuntimeException: Fail to connect to camera service
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2493)
     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2555)
     at android.app.ActivityThread.access$800(ActivityThread.java:176)
     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1437)
     at android.os.Handler.dispatchMessage(Handler.java:111)
     at android.os.Looper.loop(Looper.java:194)
     at android.app.ActivityThread.main(ActivityThread.java:5576)
     at java.lang.reflect.Method.invoke(Native Method)
     at java.lang.reflect.Method.invoke(Method.java:372)
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:956)
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:751)
  Caused by: java.lang.RuntimeException: Fail to connect to camera service
     at android.hardware.Camera.(Camera.java:637)
     at android.hardware.Camera.open(Camera.java:496)
     at com.Torch.MainActivity.onCreate(MainActivity.java:33)
     at android.app.Activity.performCreate(Activity.java:6005)
     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1111)
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2446)
     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2555) 
     at android.app.ActivityThread.access$800(ActivityThread.java:176) 
     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1437) 
     at android.os.Handler.dispatchMessage(Handler.java:111) 
     at android.os.Looper.loop(Looper.java:194) 
     at android.app.ActivityThread.main(ActivityThread.java:5576) 
     at java.lang.reflect.Method.invoke(Native Method) 
     at java.lang.reflect.Method.invoke(Method.java:372) 
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:956) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:751)