[Android-development] Integrating Dropbox

[Stromme Christian]

On 25 Sep 2014, at 08:48 , Harri Pasanen <harri at mpaja.com> wrote:

> On 24/09/2014 19:57, Harri Pasanen wrote:
>> Hi,
>> 
>> Trying to include official DropBox Android SDK libs in my Qt project, 
>> I ran into an issue where the app crashes at startup.
>> 
>> Logcat provides a hint:
>> 
>> W/dalvikvm(22608): No implementation found for native 
>> Lcom/dropbox/sync/android/NativeLib;.nativeLibIsLoaded:()Z
>> 
>> shortly after uncaught exceptions cause it to crash and come burning 
>> down.
>> 
>> I think what is happening is that the DropBox java API is trying to 
>> reload the libDropboxSync.so which is already loaded by Qt as it is 
>> part of the
>> bundled_libs in libs.xml.  It is not prepared for the fact that the 
>> lib is already loaded.
>> 
>> Is there some qmake magic or other voodoo that would bundle a lib in 
>> APK's library folder, but would prevent Qt from loading it?
>> 
>> Like a variable that would blacklist the libraries not to be loaded by 
>> Qt at startup?
>> 
>> Thanks,
>> 
>> Harri
> 
> Curiosity got the better of me and I went rummaging around the Qt source.
> 
> I hope to be wrong, but I don't think my case above has been thought of 
> yet.  Seems like one possible place to hack would be around
> the function public static void loadBundledLibraries() in QtNative.java.
> Better solution would be to have a a second category of bundled libs: 
> bundled yes, but not so much as automatically loaded.
> 
> Any hints appreciated,
> 
> Harri
> 
> 
> 
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Hi,

I don’t know how the DropBox implementation is done, but I would be very surprised if it fails due
to a library reload… Can you confirm that the appropriate dropbox libraries are loaded by Qt?
Also, Qt only loads libraries you tell it to load (see ANDROID_EXTRA_LIBS in your .pro file)

—
Christian