11-24 16:19:54.603 18488-26881/com.example.android.mediarecorder E/AndroidRuntime: FATAL EXCEPTION: AsyncTask android/android-MediaRecorder#1
Process: com.example.android.mediarecorder, PID: 18488
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:318)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:762)
Caused by: java.lang.RuntimeException: Fail to connect to camera service
at android.hardware.Camera.<init>(Camera.java:519)
at android.hardware.Camera.open(Camera.java:379)
at com.example.android.common.media.CameraHelper.getDefaultCameraInstance(CameraHelper.java:103)
at com.example.android.mediarecorder.MainActivity.prepareVideoRecorder(MainActivity.java:142)
at com.example.android.mediarecorder.MainActivity.access$000(MainActivity.java:44)
at com.example.android.mediarecorder.MainActivity$MediaPrepareTask.doInBackground(MainActivity.java:218)
at com.example.android.mediarecorder.MainActivity$MediaPrepareTask.doInBackground(MainActivity.java:213)
at android.os.AsyncTask$2.call(AsyncTask.java:304)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:762)