NativeScript / NativeScript/android
Can not extend android.content.ContentProvider
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Description
Environment
Provide version numbers for the following components (information can be retrieved by running tns info in your project folder or by inspecting the package.json of the project):
- CLI:
- Cross-platform modules: 6.2.0
- Android Runtime: 6.2.0
- iOS Runtime (if applicable):
- Plugin(s):
Describe the bug
When starting app that has android.content.ContentProvider as in the simplest way I could find Android explodes with RuntimeException as below:
Process: org.nativescript.testprovider, PID: 8272
java.lang.RuntimeException: Unable to get provider com.tns.MyProvider: java.lang.NullPointerException: Attempt to read from field 'int com.tns.Runtime.currentObjectId' on a null object reference
at android.app.ActivityThread.installProvider(ActivityThread.java:6396)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:5938)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5853)
at android.app.ActivityThread.access$1100(ActivityThread.java:199)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1650)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.NullPointerException: Attempt to read from field 'int com.tns.Runtime.currentObjectId' on a null object reference
at com.tns.Runtime.initInstance(Runtime.java:788)
at com.tns.MyProvider.<init>(MyProvider.java:13)
at java.lang.Class.newInstance(Native Method)
at android.app.AppComponentFactory.instantiateProvider(AppComponentFactory.java:121)
at androidx.core.app.CoreComponentFactory.instantiateProvider(CoreComponentFactory.java:62)
at android.app.ActivityThread.installProvider(ActivityThread.java:6380)
... 10 more
To Reproduce
Extend android.content.ContentProvider with any content and try to start the app.
Expected behavior
- App does not crash
- Content provider query is being called to get the directory
Sample project
Demo project based on "Plain JavaScript -Hello World" template
Additional context
I managed to have it working using pure Android without problems and I copied the fragments of AndroidManifest.xml from it.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the crash with the linked nativescript-content-provider demo and its AndroidManifest.xml, starting from the ContentProvider extension and the Runtime.initInstance stack trace. Compare the NativeScript behavior with the reporter’s working pure-Android example; done means the app starts without crashing and the content provider query is called to get the directory.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- android
- Domain
- mobile-dev
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100