[英]opening camera from image_picker package in flutter crashes app on real device but works fine in emulator (android)
[英]image_picker plugin for flutter and app crashes
這是導致應用程序崩潰的選擇器,它會打開圖庫,但是當我選擇圖像時,它會崩潰。 我正在使用 flutter beta 通道,並且pubspec.yaml
image_picker 依賴項聲明為未指定版本。 我在另一個屏幕上使用了圖像選擇器,然后它工作得很好。 但現在它崩潰了,模擬器和物理設備都崩潰了。
我也不確定為什么錯誤包括聯系服務插件,任何幫助將不勝感激。
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;
});
}
錯誤日志
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
當存在與權限相關的問題時,圖像選擇器通常會拋出此異常。 有不同的原因可能導致這種情況:
您忘記在AndroidManifest.xml中插入權限的事實
您插入的其他插件(如 permissions_handler、contacts_services...)正在產生沖突:
-示例(contacts_services): https://github.com/flutter/flutter/issues/58370
在您的具體情況下,由於您提到了 contacts_service 插件,我認為這兩個插件如何處理權限存在一些沖突。
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