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ClassCastException: com.facebook.react.bridge.ReadableNativeMap cannot be cast to java.lang.String

See original GitHub issue

After migrating the project to AndroidX the app shows me this error at startup.

I have no clues about where to look for this error, I also tried to load an initial blank page to eliminate all the possible code written by me, but the problem persists.

This error only appears on Android (tested on Android 5.1 and 6.0), everything works correctly on iOS

React Native version: 0.59.10

E/unknown:ReactNative: Exception in native call
    java.lang.ClassCastException: com.facebook.react.bridge.ReadableNativeMap cannot be cast to java.lang.String
        at com.facebook.react.bridge.ReadableNativeArray.getString(ReadableNativeArray.java:135)
        at com.facebook.react.bridge.JavaMethodWrapper$5.extractArgument(JavaMethodWrapper.java:73)
        at com.facebook.react.bridge.JavaMethodWrapper$5.extractArgument(JavaMethodWrapper.java:69)
        at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:359)
        at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:158)
        at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)
        at android.os.Handler.handleCallback(Handler.java:815)
        at android.os.Handler.dispatchMessage(Handler.java:104)
        at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:29)
        at android.os.Looper.loop(Looper.java:194)
        at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(MessageQueueThreadImpl.java:232)
        at java.lang.Thread.run(Thread.java:818)

Issue Analytics

State:
Created 4 years ago
Reactions:3
Comments:7 (1 by maintainers)

Top GitHub Comments

2reactions

Ilario17commented, Sep 6, 2019

Hi @clementinoux after hours of testing I discovered that the error comes from an incompatible library, in my case the library is react-native-default-preference.

If I comment on the snippet in which I use this lib the error disappears

0reactions

stale[bot]commented, Dec 12, 2019

Closing this issue after a prolonged period of inactivity. If this issue is still present in the latest release, please feel free to create a new issue with up-to-date information.

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