Download datasources screen doesn't show anything?

[JohnHBrock]

I built and installed the app, but when I go to the "DOWNLOAD" screen under Data Sources, nothing shows up.

[nuest]

The server component that provides different data sources is currently offline since we are currently not actively developing this app. I reactivated it (http://geoviqua.dev.52north.org/geoar/) - can you please check if data sources can now be downloaded?

If you want to use your own data sources you will have to deploy your own server though, see https://github.com/52North/geoar-codebase

[JohnHBrock]

Cool, thanks! I'm now able to download the datasources through the app, but as soon as I try turning one on by clicking the checkbox, the app crashes with a message about an unhandled exception. fail_0log shows this:

java.lang.NoClassDefFoundError: org/n52/geoar/newdata/SpatialEntity
at java.lang.Class.getDeclaredMethods(Native Method)
at java.lang.Class.getDeclaredMethods(Class.java:656)
at org.n52.geoar.newdata.DataSourceHolder.perfomInjection(DataSourceHolder.java:386)
at org.n52.geoar.newdata.DataSourceHolder.initializeVisualizations(DataSourceHolder.java:506)
at org.n52.geoar.newdata.DataSourceHolder.getVisualizations(DataSourceHolder.java:316)
at org.n52.geoar.DataSourceListAdapter.getDataSourceInstanceView(DataSourceListAdapter.java:482)
at org.n52.geoar.DataSourceListAdapter.getGroupView(DataSourceListAdapter.java:354)
at android.widget.ExpandableListConnector.getView(ExpandableListConnector.java:446)
at android.widget.AbsListView.obtainView(AbsListView.java:2450)
at android.widget.ListView.measureHeightOfChildren(ListView.java:1364)
at android.widget.ListView.onMeasure(ListView.java:1276)
at android.view.View.measure(View.java:16654)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5150)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
at android.view.View.measure(View.java:16654)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5150)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at android.view.View.measure(View.java:16654)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2064)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1189)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1374)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1076)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5913)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:807)
at android.view.Choreographer.doCallbacks(Choreographer.java:601)
at android.view.Choreographer.doFrame(Choreographer.java:562)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:791)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5867)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:674)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "org.n52.geoar.newdata.SpatialEntity" on path: DexPathList[[zip file "/storage/emulated/0/Android/data/org.n52.geoar/files/org.n52.android.52n-geoar-ds-noise.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
... 38 more

[JGeraldoLima]

Hi, sorry about the delay! I was the first one to use this library, and I put some guides here. I used my own database, but it is local (on the user's device, using SQLite). If you need the same, just copy+paste the model of one of the projects in this link(https://github.com/52North/geoar-datasources) and edit the class <*Response> to acess you database. Don't forget to adapt the other classes to work with you objetc (if you need more/less attributes).

If you need help about anything more, please contact me :) good luck!