are you sure that's even from your app and not something else...

kris

On Mon, Jul 23, 2012 at 10:38 AM, Zoltán Páll <[email protected]> wrote:
> Oh, the permission denied is just a warning. My app crashes because of
> something else. What's this permission denied then?
>
> Z.
>
>
> On Monday, July 23, 2012 4:37:24 PM UTC+2, Zoltán Páll wrote:
>>
>> Thanks Mark,
>>
>> How would you proceed then with this logcat output (if you don't mind
>> helping me a little more)
>>
>> 07-23 16:32:05.732: E/AndroidRuntime(13008): Uncaught handler: thread main
>> exiting due to uncaught exception
>> 07-23 16:32:05.832: W/System.err(13008): java.io.IOException: Permission
>> denied
>> 07-23 16:32:05.882: E/AndroidRuntime(13008): FATAL EXCEPTION: main
>> 07-23 16:32:05.882: E/AndroidRuntime(13008):
>> java.lang.NullPointerException
>> 07-23 16:32:05.882: E/AndroidRuntime(13008): at
>> com.pallzoltan.MainActivity.onPreviewFrame(MainActivity.java:122)
>> 07-23 16:32:05.882: E/AndroidRuntime(13008): at
>> android.hardware.Camera$EventHandler.handleMessage(Camera.java:547)
>> 07-23 16:32:05.882: E/AndroidRuntime(13008): at
>> android.os.Handler.dispatchMessage(Handler.java:99)
>> 07-23 16:32:05.882: E/AndroidRuntime(13008): at
>> android.os.Looper.loop(Looper.java:130)
>> 07-23 16:32:05.882: E/AndroidRuntime(13008): at
>> android.app.ActivityThread.main(ActivityThread.java:3683)
>> 07-23 16:32:05.882: E/AndroidRuntime(13008): at
>> java.lang.reflect.Method.invokeNative(Native Method)
>> 07-23 16:32:05.882: E/AndroidRuntime(13008): at
>> java.lang.reflect.Method.invoke(Method.java:507)
>> 07-23 16:32:05.882: E/AndroidRuntime(13008): at
>> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:895)
>> 07-23 16:32:05.882: E/AndroidRuntime(13008): at
>> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:653)
>> 07-23 16:32:05.882: E/AndroidRuntime(13008): at
>> dalvik.system.NativeStart.main(Native Method)
>>
>> Line 122 is the highlighted one
>>
>> b.setPixels(rgba, 0, mCameraWidth, 0, 0, mCameraWidth, mCameraHeight);
>>
>> Canvas c = new Canvas(b);
>>
>> mImageView.draw(c);
>>
>>
>> Thanks,
>>
>> Z.
>>
>>
>> On Monday, July 23, 2012 3:38:26 PM UTC+2, Mark Murphy (a Commons Guy)
>> wrote:
>>>
>>> On Mon, Jul 23, 2012 at 9:04 AM, Zoltán Páll wrote:
>>> > 1) When running an app from Eclipse, the app might crash. Eclipse shows
>>> > me a
>>> > stack trace (Debug panel) but it all looks like native Android
>>> > functions,
>>> > which I have nothing to do with, so after playing around with Eclipse,
>>> > I
>>> > found that if i step over the stops, LogCat will spit out a partial
>>> > stack
>>> > trace. Is this the proper way of finding the faulty line of code? How
>>> > do you
>>> > guys handle this?
>>>
>>> I usually let the crash continue and examine LogCat.
>>>
>>> > 2) Also when crashing, my app might be crashing because of not having
>>> > the
>>> > right permissions. (How) Can I find out what permissions stop the app
>>> > from
>>> > running, or do I just have to guess that it needs some camera-related
>>> > permissions if the faulty lines proves to be related to camera?
>>>
>>> The stack trace will tell you when your problem is due to permissions
>>> -- the exception should tell you the permission that you need. Also,
>>> many (most?) methods in the Android SDK that require a permission are
>>> documented as such, either at the method or class level, in the
>>> JavaDocs.
>>>
>>> --
>>> Mark Murphy (a Commons Guy)
>>> http://commonsware.com | http://github.com/commonsguy
>>> http://commonsware.com/blog | http://twitter.com/commonsguy
>>>
>>> _The Busy Coder's Guide to Android Development_ Version 3.8 Available!
>
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