Occasional crash on load

[jvoll]

Stack trace from Android developer console:

java.lang.RuntimeException: Unable to start activity ComponentInfo{me.taedium.android/me.taedium.android.view.ViewRecommendation}: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment me.taedium.android.view.RecommendationAdapter$RecFragment: make sure class name exists, is public, and has an empty constructor that is public
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
at android.app.ActivityThread.access$1500(ActivityThread.java:117)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3683)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment me.taedium.android.view.RecommendationAdapter$RecFragment: make sure class name exists, is public, and has an empty constructor that is public
at android.support.v4.app.Fragment.instantiate(Fragment.java:388)
at android.support.v4.app.FragmentState.instantiate(Fragment.java:96)
at android.support.v4.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:1662)
at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:192)
at me.taedium.android.view.ViewRecommendation.onCreate(ViewRecommendation.java:45)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
... 11 more
Caused by: java.lang.InstantiationException: me.taedium.android.view.RecommendationAdapter$RecFragment
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1409)
at android.support.v4.app.Fragment.instantiate(Fragment.java:377)
... 17 more

[jvoll]

I think I've fixed this by following the instructions on http://developer.android.com/reference/android/app/Fragment.html

"All subclasses of Fragment must include a public empty constructor. The framework will often re-instantiate a fragment class when needed, in particular during state restore, and needs to be able to find this constructor to instantiate it. If the empty constructor is not available, a runtime exception will occur in some cases during state restore."

We will push an update to the app tonight and see if it is fixed. Will close if we don't get any of these bug reports in the next week or so.