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java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.AssetFileDescriptor android.content.ContentResolver.openAssetFileDescriptor(android.net.Uri, java.lang.String)' on a null object reference

See original GitHub issue

I am getting the following exception:

Fatal Exception: java.lang.RuntimeException: An error occurred while executing doInBackground()
       at android.os.AsyncTask$3.done(AsyncTask.java:354)
       at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
       at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
       at java.util.concurrent.FutureTask.run(FutureTask.java:271)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
       at java.lang.Thread.run(Thread.java:764)
Caused by java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.AssetFileDescriptor android.content.ContentResolver.openAssetFileDescriptor(android.net.Uri, java.lang.String)' on a null object reference
       at android.provider.ContactsContract$Contacts.openContactPhotoInputStream(ContactsContract.java:2142)
       at flutter.plugins.contactsservice.contactsservice.ContactsServicePlugin.loadContactPhotoHighRes(ContactsServicePlugin.java:647)
       at flutter.plugins.contactsservice.contactsservice.ContactsServicePlugin.access$700(ContactsServicePlugin.java:54)
       at flutter.plugins.contactsservice.contactsservice.ContactsServicePlugin$GetContactsTask.doInBackground(ContactsServicePlugin.java:434)
       at flutter.plugins.contactsservice.contactsservice.ContactsServicePlugin$GetContactsTask.doInBackground(ContactsServicePlugin.java:405)
       at android.os.AsyncTask$2.call(AsyncTask.java:333)
       at java.util.concurrent.FutureTask.run(FutureTask.java:266)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
       at java.lang.Thread.run(Thread.java:764)

Following the stack tree it seems that the problem occurs in the frameworks/base/core/java/android/provider/ContactsContract.java when the content resolver is null

                try {
                    AssetFileDescriptor fd = cr.openAssetFileDescriptor(displayPhotoUri, "r");
                    if (fd != null) {
                        return fd.createInputStream();
                    }
                } catch (IOException e) {
                    // fallback to the thumbnail code
                }

Looking at the plug-in code there is one place on the onDetachedFromEngine method where this is set to null:

  @Override
  public void onDetachedFromEngine(FlutterPluginBinding binding) {
    methodChannel.setMethodCallHandler(null);
    methodChannel = null;
    contentResolver = null;
    this.delegate = null;
  }

I am getting crash reports for this problem but I cannot simply reproduced them in my app. My best guess is that it might be related with the running the getContacts call in the background and then closing the app.

Is this a known issue? Anyone else having the same problem?

Thanks for the support

Issue Analytics

State:
Created 3 years ago
Comments:9

Top GitHub Comments

3reactions

em-azharcommented, Feb 15, 2021

Same problem here😭

0reactions

DVendycommented, Nov 29, 2022

Any updates on this?

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