InstantiationException: can't instantiate class com.tripvi.drawerlayout.Drawer$ContentWrapperFragment

[manumaticx]

Sometimes, my app is crashing on resume.

06-24 13:15:41.897: E/AndroidRuntime(17536): FATAL EXCEPTION: main
06-24 13:15:41.897: E/AndroidRuntime(17536): Process: com.goyya.fde, PID: 17536
06-24 13:15:41.897: E/AndroidRuntime(17536): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.goyya.fde/org.appcelerator.titanium.TiActivity}: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.tripvi.drawerlayout.Drawer$ContentWrapperFragment: make sure class name exists, is public, and has an empty constructor that is public
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.app.ActivityThread.access$800(ActivityThread.java:135)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.os.Handler.dispatchMessage(Handler.java:102)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.os.Looper.loop(Looper.java:136)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.app.ActivityThread.main(ActivityThread.java:5001)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at java.lang.reflect.Method.invokeNative(Native Method)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at java.lang.reflect.Method.invoke(Method.java:515)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at dalvik.system.NativeStart.main(Native Method)
06-24 13:15:41.897: E/AndroidRuntime(17536): Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.tripvi.drawerlayout.Drawer$ContentWrapperFragment: make sure class name exists, is public, and has an empty constructor that is public
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.support.v4.app.Fragment.instantiate(Fragment.java:413)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.support.v4.app.FragmentState.instantiate(Fragment.java:97)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.support.v4.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:1801)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:213)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:97)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at org.appcelerator.titanium.TiBaseActivity.onCreate(TiBaseActivity.java:472)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at org.appcelerator.titanium.TiActivity.onCreate(TiActivity.java:18)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.app.Activity.performCreate(Activity.java:5231)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
06-24 13:15:41.897: E/AndroidRuntime(17536):    ... 11 more
06-24 13:15:41.897: E/AndroidRuntime(17536): Caused by: java.lang.InstantiationException: can't instantiate class com.tripvi.drawerlayout.Drawer$ContentWrapperFragment; no empty constructor
06-24 13:15:41.897: E/AndroidRuntime(17536):    at java.lang.Class.newInstanceImpl(Native Method)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at java.lang.Class.newInstance(Class.java:1208)
06-24 13:15:41.897: E/AndroidRuntime(17536):    at android.support.v4.app.Fragment.instantiate(Fragment.java:402)
06-24 13:15:41.897: E/AndroidRuntime(17536):    ... 20 more

It's hard to reproduce: when I'm leaving the App with back button or home button and open it again immediately everything works fine. But if I wait some time after sending it to background it crashes with the above exception on resuming and restarts. Do you have any idea what could be the reason?

(Testing on Nexus 5 with 4.4.3 on Titanium SDK 3.3.0)

[manumaticx]

Steps to reproduce:

• open app
• press home button
• wait for about 20 minutes
• open app again
• should crash with the above exception

I'm working on a fix. PR is in the making.

[sakae-nakajima]

Any progress on this, I am having the same problem. This is easy to reproduce.

• Close my app
• Open memory hungry apps like FB
• Open my app

Black screen with the exception mentioned in the original post.

[manumaticx]

As mentioned above, I fixed this. Not sure why my pull requests aren't merged.

But you can grab an updated version of the module in my fork: https://github.com/manumaticx/Ti.DrawerLayout

It's streets ahead of this one.

[sakae-nakajima]

Thank you very much, I noticed it and I am giving a shot now!