CODEWITHSUNDEEP
androidflutter
M Zubair Alam
M Zubair Alam

Reputation: 71

image_picker plugin for flutter and app crashes

This is the picker that is causing the app to crash, It opens gallery but when I choose image, it crashes. I am using the flutter beta channel, and the pubspec.yaml image_picker dependency is declared with unspecified version. I used image picker in another screen and it worked fine then. But now it crashes, both the emulator and physical device.

I am also unsure why the error included contact service plugin, any help would be appreciated.

File postPicture;
  Future getImage() async {
    var tempImage;
    if (await Permission.photos.isGranted) {
      try {
        tempImage = await ImagePicker.pickImage(source: ImageSource.gallery);
      } catch (e) {
        print(e);
      }

    }
    setState(() {
      postPicture = tempImage;
    });
  }

ERROR LOG

    E/AndroidRuntime(27652): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=2342, result=-1, data=Intent { dat=content://com.android.providers.media.documents/document/image:25 flg=0x1 }} to activity {com.example.clientApp/com.example.clientApp.MainActivity}: java.lang.NullPointerException: Attempt to invoke interface method 'void io.flutter.plugin.common.MethodChannel$Result.success(java.lang.Object)' on a null object reference
E/AndroidRuntime(27652):    at android.app.ActivityThread.deliverResults(ActivityThread.java:4845)
E/AndroidRuntime(27652):    at android.app.ActivityThread.handleSendResult(ActivityThread.java:4886)
E/AndroidRuntime(27652):    at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51)
E/AndroidRuntime(27652):    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
E/AndroidRuntime(27652):    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
E/AndroidRuntime(27652):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
E/AndroidRuntime(27652):    at android.os.Handler.dispatchMessage(Handler.java:107)
E/AndroidRuntime(27652):    at android.os.Looper.loop(Looper.java:214)
E/AndroidRuntime(27652):    at android.app.ActivityThread.main(ActivityThread.java:7356)
E/AndroidRuntime(27652):    at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(27652):    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/AndroidRuntime(27652):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
E/AndroidRuntime(27652): Caused by: java.lang.NullPointerException: Attempt to invoke interface method 'void io.flutter.plugin.common.MethodChannel$Result.success(java.lang.Object)' on a null object reference
E/AndroidRuntime(27652):    at flutter.plugins.contactsservice.contactsservice.ContactsServicePlugin$BaseContactsServiceDelegate.finishWithResult(ContactsServicePlugin.java:239)
E/AndroidRuntime(27652):    at flutter.plugins.contactsservice.contactsservice.ContactsServicePlugin$BaseContactsServiceDelegate.onActivityResult(ContactsServicePlugin.java:255)
E/AndroidRuntime(27652):    at io.flutter.embedding.engine.FlutterEnginePluginRegistry$FlutterEngineActivityPluginBinding.onActivityResult(FlutterEnginePluginRegistry.java:691)
E/AndroidRuntime(27652):    at io.flutter.embedding.engine.FlutterEnginePluginRegistry.onActivityResult(FlutterEnginePluginRegistry.java:378)
E/AndroidRuntime(27652):    at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onActivityResult(FlutterActivityAndFragmentDelegate.java:597)
E/AndroidRuntime(27652):    at io.flutter.embedding.android.FlutterActivity.onActivityResult(FlutterActivity.java:582)
E/AndroidRuntime(27652):    at android.app.Activity.dispatchActivityResult(Activity.java:8110)
E/AndroidRuntime(27652):    at android.app.ActivityThread.deliverResults(ActivityThread.java:4838)
E/AndroidRuntime(27652):    ... 11 more
I/Process (27652): Sending signal. PID: 27652 SIG: 9

Upvotes: 1

Views: 1533

Answers (1)

Andrea Costanzo
Andrea Costanzo

Reputation: 2235

Image picker usually throws this exception when there are issues related to the permissions. There are different reasons that may cause this:

  1. The fact that you forgot to insert permissions in the AndroidManifest.xml

  2. Other plugins (like permissions_handler, contacts_services,...) that you inserted are generating conflicts:

-example (contacts_services): https://github.com/flutter/flutter/issues/58370

  1. If you have overwritten the method onActivityResult(int requestCode, int resultCode, Intent data) in the android MainActivity class, you may face errors due to its implementation. This usually happens if you used MethodChannels to implement native android code.

In your specific case, since you mentioned contacts_service plugin, I think there are some conflicts related to how permissions are handled by these 2 plugins.

Upvotes: 0

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