NativeScript / NativeScript/android

Can not extend android.content.ContentProvider

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Dominant language
C++
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Forks
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Avg merge
10h 46m
Merged PRs (30d)
14

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

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. 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

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