mAdapter.getItemViewType nullPointException

[redwind]

Hi emilsjolander !

I don't know why but i use a conplex layout include textView,ImageView, it's has problem in viewForPage at line final int viewType = mAdapter.getItemViewType(page);

I've tried to set view type in adapter, it's still happend. But if i replace by final int viewType= 0; It's work fine.

another question : i want to add two pages for first and last page, and user only flip 3/4 of view like flipboard do, so what can i do to make it ?

Thanks for your library !

[emilsjolander]

it's has problem in viewForPage

What problem? does it crash?

i want to add two pages for first and last page, and user only flip 3/4 of view like flipboard do, so what can i do to make it ?

I don't know what you mean by this, please explain, link to a video of this if possible.

[emilsjolander]

Saw the title of the issue now. Ok so it crashes. Please post the stacktrace

[redwind]

Thanks for your comment ! This is my stracktrace:

05-10 11:40:03.756: E/AndroidRuntime(3995): FATAL EXCEPTION: main
05-10 11:40:03.756: E/AndroidRuntime(3995): java.lang.NullPointerException
05-10 11:40:03.756: E/AndroidRuntime(3995):     at se.emilsjolander.FlipView.viewForPage(FlipView.java:707)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at se.emilsjolander.FlipView.dispatchDraw(FlipView.java:505)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.View.draw(View.java:13680)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewGroup.drawChild(ViewGroup.java:3019)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2883)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.View.draw(View.java:13801)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.View.draw(View.java:13682)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewGroup.drawChild(ViewGroup.java:3019)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2883)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.View.draw(View.java:13680)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewGroup.drawChild(ViewGroup.java:3019)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2883)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.View.draw(View.java:13680)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewGroup.drawChild(ViewGroup.java:3019)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2883)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.View.draw(View.java:13801)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.widget.FrameLayout.draw(FrameLayout.java:467)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2226)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewRootImpl.drawSoftware(ViewRootImpl.java:2593)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewRootImpl.draw(ViewRootImpl.java:2484)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2340)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2142)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1139)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4879)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:776)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.Choreographer.doCallbacks(Choreographer.java:579)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.Choreographer.doFrame(Choreographer.java:548)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:762)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.os.Handler.handleCallback(Handler.java:725)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.os.Handler.dispatchMessage(Handler.java:92)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.os.Looper.loop(Looper.java:153)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at android.app.ActivityThread.main(ActivityThread.java:5297)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at java.lang.reflect.Method.invokeNative(Native Method)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at java.lang.reflect.Method.invoke(Method.java:511)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
05-10 11:40:03.756: E/AndroidRuntime(3995):     at dalvik.system.NativeStart.main(Native Method)
05-10 11:40:03.764: E/AppErrorDialog(498): Failed to get ILowStorageHandle instance

[redwind]

I don't know what you mean by this, please explain, link to a video of this if possible.

Sorry about my English :)

My mean, now, user can't flip first page and last page, but i want user can flip about 30 degree for these two pages. If this question is waste of your time, please guide me what i have to try, so i will.

Thanks !

[emilsjolander]

I will look into the crash.

About the "overflip" functionality that i think you are referring to, i decided to use androids standard edgeglow instead as it is more in line with the rest of the android design.

I might add an option for this functionality in the future but can't promise anything. It should be trivial to change the current code to support this though so feel free to do it yourself :)

[emilsjolander]

Have you made any alterations to the libraries code? because i do not understand how the library can crash on those line numbers that are in the crash log you posted. Please paste lines 707 and 505 from FlipView.java in your local copy of the project

[redwind]

Here they are :

View v = getActiveView(page);

postAddView(v);

As what i said before, i use a complex layout as gridlayout for each page, and add item to gridlayout in getView function and I don't set callback for flipview.

[emilsjolander]

could you please post the layout you are using? the one you refer to as complex

[redwind]

Hi emilsjolander ! I have been quite busy in the past time, so now, i continue to my project :). i found that my problem cause by i didn't set setOnFlipListener. i'll try to debug your library to implement "overflip" function :), do you have any suggest for me ? Thank so much !

[emilsjolander]

i am pushing a fix later today or tomorrow which will fix that the flipview crashes when no fliplistener is set. Overflip functionality is coming in this update aswell. See issue #9.

[redwind]

Hi emilsojlander, thanks for your support ! I'm waitting for new update.

Thank you so much !

[emilsjolander]

@redwind the new update is live and ready to use ;)