Dropbox Sync Library

gadgetmonster · Jul 11, 2013

I have tried to build your example and believe I have everything in the correct place, however, I receive the following error in the Initialize line:

B4X:

Installing file.
PackageAdded: package:b4a.example
** Activity (main) Create, isFirst = true **
main_activity_create (B4A line: 28)
mgr.Initialize(key, secret, "manager")
java.lang.ExceptionInInitializerError
   at com.dropbox.sync.android.CoreAccountManager.initNativeLib(CoreAccountManager.java:111)
   at com.dropbox.sync.android.CoreAccountManager.<init>(CoreAccountManager.java:91)
   at com.dropbox.sync.android.DbxAccountManager.getInstance(DbxAccountManager.java:132)
   at com.dropbox.sync.android.DbxAccountManager.getInstance(DbxAccountManager.java:100)
   at anywheresoftware.b4a.dropbox.DbxAccountManagerWrapper.Initialize(DbxAccountManagerWrapper.java:48)
   at b4a.example.main._activity_create(main.java:248)
   at java.lang.reflect.Method.invokeNative(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:511)
   at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)
   at b4a.example.main.afterFirstLayout(main.java:89)
   at b4a.example.main.access$100(main.java:16)
   at b4a.example.main$WaitForLayout.run(main.java:74)
   at android.os.Handler.handleCallback(Handler.java:615)
   at android.os.Handler.dispatchMessage(Handler.java:92)
   at android.os.Looper.loop(Looper.java:137)
   at android.app.ActivityThread.main(ActivityThread.java:4898)
   at java.lang.reflect.Method.invokeNative(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:511)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1008)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:775)
   at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ExceptionInInitializerError
   at com.dropbox.sync.android.NativeLib.<init>(NativeLib.java:33)
   at com.dropbox.sync.android.NativeLib.<clinit>(NativeLib.java:11)
   ... 21 more
Caused by: java.lang.NoSuchMethodError: no method with name='<init>' signature='(Lcom/dropbox/sync/android/NativeApp;)V' in class Lcom/dropbox/sync/android/NativeHttp;
   at com.dropbox.sync.android.NativeHttp.nativeClassInit(Native Method)
   at com.dropbox.sync.android.NativeHttp.nativeClassInit(Native Method)
   at com.dropbox.sync.android.NativeHttp.<clinit>(NativeHttp.java:412)
   ... 23 more

Any ideas?

dealsmonkey · Jul 11, 2013

gadgetmonster said:

I have tried to build your example and believe I have everything in the correct place, however, I receive the following error in the Initialize line:

B4X:

Installing file.
PackageAdded: package:b4a.example
** Activity (main) Create, isFirst = true **
main_activity_create (B4A line: 28)
mgr.Initialize(key, secret, "manager")
java.lang.ExceptionInInitializerError
   at com.dropbox.sync.android.CoreAccountManager.initNativeLib(CoreAccountManager.java:111)
   at com.dropbox.sync.android.CoreAccountManager.<init>(CoreAccountManager.java:91)
   at com.dropbox.sync.android.DbxAccountManager.getInstance(DbxAccountManager.java:132)
   at com.dropbox.sync.android.DbxAccountManager.getInstance(DbxAccountManager.java:100)
   at anywheresoftware.b4a.dropbox.DbxAccountManagerWrapper.Initialize(DbxAccountManagerWrapper.java:48)
   at b4a.example.main._activity_create(main.java:248)
   at java.lang.reflect.Method.invokeNative(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:511)
   at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)
   at b4a.example.main.afterFirstLayout(main.java:89)
   at b4a.example.main.access$100(main.java:16)
   at b4a.example.main$WaitForLayout.run(main.java:74)
   at android.os.Handler.handleCallback(Handler.java:615)
   at android.os.Handler.dispatchMessage(Handler.java:92)
   at android.os.Looper.loop(Looper.java:137)
   at android.app.ActivityThread.main(ActivityThread.java:4898)
   at java.lang.reflect.Method.invokeNative(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:511)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1008)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:775)
   at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ExceptionInInitializerError
   at com.dropbox.sync.android.NativeLib.<init>(NativeLib.java:33)
   at com.dropbox.sync.android.NativeLib.<clinit>(NativeLib.java:11)
   ... 21 more
Caused by: java.lang.NoSuchMethodError: no method with name='<init>' signature='(Lcom/dropbox/sync/android/NativeApp;)V' in class Lcom/dropbox/sync/android/NativeHttp;
   at com.dropbox.sync.android.NativeHttp.nativeClassInit(Native Method)
   at com.dropbox.sync.android.NativeHttp.nativeClassInit(Native Method)
   at com.dropbox.sync.android.NativeHttp.<clinit>(NativeHttp.java:412)
   ... 23 more

Any ideas?

Have you done this stage ??

1. Download the Android SDK: https://www.dropbox.com/developers/sync
Unzip it and copy dropbox-sync-sdk-android.jar to the libraries folder.

gadgetmonster · Jul 11, 2013

dealsmonkey said:
Have you done this stage ??

1. Download the Android SDK: https://www.dropbox.com/developers/sync
Unzip it and copy dropbox-sync-sdk-android.jar to the libraries folder.

Sure have

Erel · Jul 12, 2013

Which device are you using?

This library will not work on the emulator.

gadgetmonster · Jul 12, 2013

Erel said:
Which device are you using?

This library will not work on the emulator.

This is on a Galaxy Note 2

Erel · Jul 14, 2013

Please try to use this jar file:

This jar contains the native libraries for mips and x86.

tkristensen · Jul 31, 2013

Erel,

I'm having the same issue gadgetmonster had above...from my log:

B4X:

main_activity_create (B4A line: 29)
manager.Initialize(key, secret, "manager")
java.lang.ExceptionInInitializerError
   at com.dropbox.sync.android.CoreAccountManager.initNativeLib(CoreAccountManager.java:111)
   at com.dropbox.sync.android.CoreAccountManager.<init>(CoreAccountManager.java:91)
   at com.dropbox.sync.android.DbxAccountManager.getInstance(DbxAccountManager.java:132)
   at com.dropbox.sync.android.DbxAccountManager.getInstance(DbxAccountManager.java:100)
   at anywheresoftware.b4a.dropbox.DbxAccountManagerWrapper.Initialize(DbxAccountManagerWrapper.java:48)
   at b4a.example.main._activity_create(main.java:251)
   at java.lang.reflect.Method.invokeNative(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:511)
   at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)
   at b4a.example.main.afterFirstLayout(main.java:89)
   at b4a.example.main.access$100(main.java:16)
   at b4a.example.main$WaitForLayout.run(main.java:74)
   at android.os.Handler.handleCallback(Handler.java:605)
   at android.os.Handler.dispatchMessage(Handler.java:92)
   at android.os.Looper.loop(Looper.java:137)
   at android.app.ActivityThread.main(ActivityThread.java:4424)
   at java.lang.reflect.Method.invokeNative(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:511)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
   at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ExceptionInInitializerError
   at com.dropbox.sync.android.NativeLib.<init>(NativeLib.java:33)
   at com.dropbox.sync.android.NativeLib.<clinit>(NativeLib.java:11)
   ... 21 more
Caused by: java.lang.NoSuchMethodError: no method with name='<init>' signature='(Lcom/dropbox/sync/android/NativeApp;)V' in class Lcom/dropbox/sync/android/NativeHttp;
   at com.dropbox.sync.android.NativeHttp.nativeClassInit(Native Method)
   at com.dropbox.sync.android.NativeHttp.nativeClassInit(Native Method)
   at com.dropbox.sync.android.NativeHttp.<clinit>(NativeHttp.java:412)
   ... 23 more
** Activity (main) Resume **

I tried the library you linked with the mips and x86 libs included, but that didn't seem to make a difference. I did notice that that sdk lib was updated on Jul 24th, but the changelog didn't look like there was much changed so do we need an updated b4a wrapper for it?

Any help appreciated

Tom

Erel · Jul 31, 2013

Try the updated library (first post). It should work.

rboeck · Jul 31, 2013

Sorry, i only changed the library and the app does start and ends without viewing anything; here the log file:

B4X:

adressliste_activity_create (B4A line: 178)
manager.Initialize(dpAppKey, dpAppSecret, "manager")
java.lang.ExceptionInInitializerError
    at com.dropbox.sync.android.CoreAccountManager.initNativeLib(CoreAccountManager.java:109)
    at com.dropbox.sync.android.CoreAccountManager.<init>(CoreAccountManager.java:89)
    at com.dropbox.sync.android.DbxAccountManager.getInstance(DbxAccountManager.java:112)
    at com.dropbox.sync.android.DbxAccountManager.getInstance(DbxAccountManager.java:99)
    at anywheresoftware.b4a.dropbox.DbxAccountManagerWrapper.Initialize(DbxAccountManagerWrapper.java:48)
    at at.rb.b4a.gmap1.adressliste._activity_create(adressliste.java:712)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)
    at at.rb.b4a.gmap1.adressliste.afterFirstLayout(adressliste.java:89)
    at at.rb.b4a.gmap1.adressliste.access$100(adressliste.java:16)
    at at.rb.b4a.gmap1.adressliste$WaitForLayout.run(adressliste.java:74)
    at android.os.Handler.handleCallback(Handler.java:615)
    at android.os.Handler.dispatchMessage(Handler.java:92)
    at android.os.Looper.loop(Looper.java:213)
    at android.app.ActivityThread.main(ActivityThread.java:4788)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
    at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ExceptionInInitializerError
    at com.dropbox.sync.android.NativeLib.<init>(NativeLib.java:33)
    at com.dropbox.sync.android.NativeLib.<clinit>(NativeLib.java:11)
    ... 21 more
Caused by: java.lang.NoSuchMethodError: no method with name='<init>' signature='(Lcom/dropbox/sync/android/NativeEnv;)V' in class Lcom/dropbox/sync/android/NativeHttp;
    at com.dropbox.sync.android.NativeHttp.nativeClassInit(Native Method)
    at com.dropbox.sync.android.NativeHttp.nativeClassInit(Native Method)
    at com.dropbox.sync.android.NativeHttp.<clinit>(NativeHttp.java:365)
    ... 23 more
** Activity (main) Resume **
** Activity (main) Pause, UserClosed = false **

Reinhard

Erel · Jul 31, 2013

Are you sure that the library version in the list of libraries is 1.10?

rboeck · Jul 31, 2013

Yes, it is 1.10; i had no problem with 1.0; but i can go back, i have a backup of the previous files.

Erel · Jul 31, 2013

v1.10 will only work with the latest Dropbox Sync API. If you are using the previous version then you should keep the old library.

rboeck · Jul 31, 2013

I changed the Dropbox Sync API; now i it sometimes works, sometime the app stops few seconds after starting. The log file:

B4X:

java.lang.RuntimeException: Unable to start service com.dropbox.sync.android.DbxSyncService@420e2c38 with Intent { cmp=at.rb.b4a.gmap1/com.dropbox.sync.android.DbxSyncService (has extras) }: java.lang.RuntimeException: Invalid start count -1 after handleStartCommand(-1).
    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2528)
    at android.app.ActivityThread.access$1900(ActivityThread.java:138)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1304)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:213)
    at android.app.ActivityThread.main(ActivityThread.java:4788)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
    at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Invalid start count -1 after handleStartCommand(-1).
    at com.dropbox.sync.android.DbxSyncService.handleStartCommand(DbxSyncService.java:235)
    at com.dropbox.sync.android.DbxSyncService.onStartCommand(DbxSyncService.java:219)
    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2511)
    ... 10 more

It tried, to use manager.UnlinkAccount in Activity_Pause; but i didnt change anything.

Erel · Jul 31, 2013

Can you reproduce it with code similar to the code in the first post?

rboeck · Jul 31, 2013

Erel said:
Can you reproduce it with code similar to the code in the first post?

I tried, but i it worked without problems. Then i went back to my app and for now the app starts, but later, when i make an backup to dropbox with following code:

B4X:

manager.uploadfile(Datadir, "mobilcrm.db","/","mobilcrm.db")

i get java.lang.NullpointerException. The string with datadir is filled, i dont know, why this code doesnt work anymore?

tkristensen · Jul 31, 2013

The app is able to start now with the version 1.10 of the library, however I'm still having some issues:

Made a test app based on the sample code in post 1.
Manager.linkaccount brings up the browser asking if I want to provide access. I say Allow on that screen. I never get a hit on the manager_AccountReady event.

If I run the app again the manager.linkaccount does nothing.

I can use the manager.unlinkaccount and run the app again and the linkaccount works as it did the first time.

Upload, download and list all give nul pointer exceptions.

Not sure what to do next

Tom

Erel · Aug 1, 2013

It will be checked.

GMan · Aug 1, 2013

rboeck said:
B4X:

manager.uploadfile(Datadir, "mobilcrm.db","/","mobilcrm.db")

i get java.lang.NullpointerException. The string with datadir is filled, i dont know, why this code doesnt work anymore?

Hoi,
i am using it as following and have no probs at all:

B4X:

manager.UploadFile (SDcardPath & "SourceDir","File.zip","TargetDir","FileBU.zip")

Have you tried a badkslash instaed a slash ?
Have you tried to write the file in a dropbox-directory (AFAIK you have to create it first in DropBox)

The SDcardPath variable is filled with the real sdcard-path for the extern (or 2nd) SD-Card.
This will be computed automatically with a little sub.

Erel · Aug 6, 2013

@rboeck I'm unable to reproduce this issue. Are you sure that you are using the latest Dropbox libraries?

rboeck · Aug 6, 2013

Today i switched back to 1.0 and then again to 1.1; i think dropbox doesnt respond for this app anymore. I tried now a second app and made an new app at dropbox; i get more response - my app stops now at my try to upload a file fpr backup etc.:

B4X:

    SQL.Close
    DoEvents
   
    File.Copy(Main.DatenDir, "mobilCrm.db",Main.DatenDir, "mobilCrm.sav")  'making an Backup file with extension sav
   
    DoEvents
   
    SQL.Initialize(Main.DatenDir, "MobilCRM.db", False)  'reopen SQL file
   
    ProgressDialogShow ("Backup  of database to dropbox..")
   
    Log(Main.DatenDir) 
    Log(File.Exists(Main.DatenDir, "mobilCrm.sav"))     'here i see, that the file and path exists... 
   
    manager.UploadFile(Main.DatenDir, "mobilCrm.sav", "/", "mobilCrm.db")   'here i get: java.lang.NullpointerException 
   
    DoEvents
   
    ProgressDialogHide

Everything is here, the code was working more than a week; the file size is 5 MB...
any ideas, what's wrong?

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