Rreact Native 常见错误总结

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   1.invariant violation:expected a component class,got[object object]

       创建自定义组件首字母要大写,否则会报错.

 

    2.Module 0 is not a registered callable module.

       将gradle升级成最新版本(cd Android 进入android目录执行:sudo ./gradlew clean) 或者通过android studio工具升级.

 

    3.android.view.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running?

       该错误属于安卓Native的错误,如果引用的Activity不存在或者已经销毁,再次引用就会报该错误,如果是React Native 调用原生控件的话,创建控件需要引用:getCurrentActivity()

 

    4.android.app.Application cannot be cast to com.facebook.React.ReactApplication

       需要将创建的MainApplication在AndroidManifest.xml配置好.

 

  5.Element type is invalid: expected a string (for built-in components) or a class/function but got: object

   发生原生一般是你引用了无效的组件,如果组件确实正确,看下引用的组件是否正常导出:(export defalut)

 

  6.react native  undefined is not an object (evaluating this....

          发生该错误的一般是忘记bind(this),只要回调函数中需要用到this的,一般都需要bind.

 

    7.react native - expected a component class, got [object Object]

   该错误可能是你引用了小写的组件,组件首字母一定要大写,比如应该写成

转载于:https://my.oschina.net/roycehe/blog/848118

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