牛轧糖7.0上的FLutter应用程序停止

Question

我正在其中一台设备（棉花糖6.0）上运行Flutter应用程序，但运行正常。 但是，如果我在另一台设备（牛轧糖7.0）上运行相同的应用程序，则会通过以下错误进行操作，并且该应用程序无法启动。

我用谷歌搜索，但没有得到任何结果。

E/FlutterMain(20122): Flutter initialization failed. E/FlutterMain(20122): java.lang.NullPointerException: Attempt to invoke virtual method 'void io.flutter.view.ResourceExtractor.waitForCompletion()' on a null object reference E/FlutterMain(20122): at io.flutter.view.FlutterMain.ensureInitializationComplete(FlutterMain.java:196) E/FlutterMain(20122): at io.flutter.app.FlutterActivityDelegate.onCreate(FlutterActivityDelegate.java:159) E/FlutterMain(20122): at io.flutter.app.FlutterActivity.onCreate(FlutterActivity.java:86) E/FlutterMain(20122): at app.ntext.ntextdev.MainActivity.onCreate(MainActivity.java:10) E/FlutterMain(20122): at android.app.Activity.performCreate(Activity.java:6666) E/FlutterMain(20122): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118) E/FlutterMain(20122): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2677) E/FlutterMain(20122): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2789) E/FlutterMain(20122): at android.app.ActivityThread.-wrap12(ActivityThread.java) E/FlutterMain(20122): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1527) E/FlutterMain(20122): at android.os.Handler.dispatchMessage(Handler.java:110) E/FlutterMain(20122): at android.os.Looper.loop(Looper.java:203) E/FlutterMain(20122): at android.app.ActivityThread.main(ActivityThread.java:6251) E/FlutterMain(20122): at java.lang.reflect.Method.invoke(Native Method) E/FlutterMain(20122): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1075) E/FlutterMain(20122): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)

谢谢。

Answer 1

尝试在终端上运行“ flutter clean”，然后再次运行。还要确保您正在运行最新版本的Flutter或使用“ flutter升级”对其进行升级。