查找日志中提到的lambda的便捷方法

Question

Lambda表达式很容易编写，易于阅读，但当我们讨论日志时，很难找到它。

我在Fabric Crashlytics中得到了下一个堆栈跟踪(我可以在Android Monitor中看到这样的错误)。问题是，是否有一些方便的方法可以在类中找到这个"Lambda #7“？

Non-fatal Exception: java.lang.NullPointerException: The mapper function returned a null value.
    at io.reactivex.internal.functions.a.a(ObjectHelper.java:39)
    at io.reactivex.internal.operators.observable.ay$a.onNext(ObservableMap.java:59)
    ...
    at java.lang.Thread.run(Thread.java:761)

---> at com.myapp.MyClass$$Lambda$7.accept(Unknown Source)
       at io.reactivex.internal.observers.LambdaObserver.onError(LambdaObserver.java:77)
       at io.reactivex.internal.observers.BasicFuseableObserver.onError(BasicFuseableObserver.java:100)
       at io.reactivex.internal.observers.BasicFuseableObserver.fail(BasicFuseableObserver.java:110)
       at io.reactivex.internal.operators.observable.ObservableMap$MapObserver.onNext(ObservableMap.java:61)
       at io.reactivex.internal.operators.observable.ObservableCreate$CreateEmitter.onNext(ObservableCreate.java:67)
       at io.objectbox.rx.RxQuery$4$1.onData(RxQuery.java:95)
       at io.objectbox.rx.RxQuery$4$1.onData(RxQuery.java:91)
       at io.objectbox.query.QueryPublisher$2.run(QueryPublisher.java:68)
       at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:428)
       at java.util.concurrent.FutureTask.run(FutureTask.java:237)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
       at java.lang.Thread.run(Thread.java:761)

Answer 1

可以使用Android Studio的Navigate -> File Structure视图(MacOs：Cmd+F12，Windows：Ctrl+F12)。您应该选中那里的Lambdas复选框，然后您将看到带有the编号的lamdas：

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