空对象引用上的“void com.getcapacitor.Bridge.onStart()”

Question

我正在将 React 应用程序包装到 Capacitor 中。当我从 AndroidStudio 运行它时，应用程序会立即启动并停止。我收到以下信息。

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.app, PID: 20226
    java.lang.NullPointerException: Attempt to invoke virtual method 'void com.getcapacitor.Bridge.onStart()' on a null object reference
        at com.getcapacitor.BridgeActivity.onStart(BridgeActivity.java:124)
        at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1435)
        at android.app.Activity.performStart(Activity.java:8019)
        at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3475)
        at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
        at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
        at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:223)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)

好像缺了什么。我检查了教程。@capacitor/core 存在。

Answer 1

我能够通过降级@capacitor/cli到v2.4.5.

npm i @capacitor/cli@2.4.5

我遇到了问题v3.0.1。