android - Ionic android 应用程序立即崩溃
问题描述
我今天发布这篇文章是因为我的离子应用程序有问题。
就是这样,该应用程序完美地构建在带有 android studio 的模拟器上。但是,在启动画面之后,它会立即崩溃。我不知道为什么会这样。在调试模式下运行应用程序后,我收到此错误:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.julesbsz.shortnews, PID: 862
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.julesbsz.shortnews/com.julesbsz.shortnews.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'int org.json.JSONArray.length()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3270)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int org.json.JSONArray.length()' on a null object reference
at com.codetrixstudio.capacitor.GoogleAuth.GoogleAuth.load(GoogleAuth.java:47)
at com.getcapacitor.PluginHandle.load(PluginHandle.java:72)
at com.getcapacitor.PluginHandle.<init>(PluginHandle.java:44)
at com.getcapacitor.Bridge.registerPlugin(Bridge.java:476)
at com.getcapacitor.Bridge.registerAllPlugins(Bridge.java:440)
at com.getcapacitor.Bridge.<init>(Bridge.java:170)
at com.getcapacitor.BridgeActivity.load(BridgeActivity.java:83)
at com.getcapacitor.BridgeActivity.init(BridgeActivity.java:62)
at com.getcapacitor.BridgeActivity.init(BridgeActivity.java:48)
at com.julesbsz.shortnews.MainActivity.onCreate(MainActivity.java:17)
at android.app.Activity.performCreate(Activity.java:7802)
at android.app.Activity.performCreate(Activity.java:7791)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3245)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Disconnected from the target VM, address: 'localhost:8600', transport: 'socket'
我真的不明白问题是什么。另外,如果您需要有关特定内容的更多信息,请告诉我。非常感谢。
解决方案
如果您阅读堆栈跟踪,您可以看到崩溃源于
at com.julesbsz.shortnews.MainActivity.onCreate(MainActivity.java:17)
然后它似乎在某些授权逻辑上失败了
at com.codetrixstudio.capacitor.GoogleAuth.GoogleAuth.load(GoogleAuth.java:47)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int org.json.JSONArray.length()' on a null object reference
您没有发布您的代码,所以也许这是学习如何设置断点和调试的好时机?
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