React-native: the development server returned response error code :404

[allenymt]

when I run:./gradlew :Examples:Movies:android:app:installDebug

the AwesonmeProject is my first react-native module

[grabbou]

@facebook-github-bot stackoverflow

PS. Please make sure you have the packager started & running in the correct folder, looks like you are trying to run a project whereas the packager runs in the folder of the previous one.

[allenymt]

@grabbou Thanks, yeah ,I forget to close the previous one, Then I restart it ,but error like this

I can't connect to development server

[grabbou]

Have you tried following the steps in error box? Isn't that changing anything?

[allenymt]

@grabbou yeah ,I tried,but it's no use

[allenymt]

@grabbou i forget the last :./packager/packager.sh ...

[deju]

@allenyulun Turn on the WIFI.

[ShayanAhmad]

quit the "react-native run-android", then do "adb reverse tcp:8081 tcp:8081" and then do the "react-native run-android" and the code shall work on "Reload JS".

[omhybrid]

i have same problem please give me solution

[khawajah]

react-native start

[a1exlism]

Maybe you could use npm instand of cnpm.

[Stupidism]

@a1exlism Have you met the same problem and solved by this way?

[guozhiyuanasd]

who can tell me how to solve？

[Stupidism]

I found several problems related with this error, and here are my solutions to solve this problem:

1. use react-native start doc
   
2. use npm instead of cnpm

[ericvicenti]

The movies sample has been removed from the core RN repo. Feel free to publish standalone example apps, and we can curate a list of them for the website.

[thiswhy]

I have the same problem.The code can worked in IOS ,but can not be worked in android .If you have solue this problem ,tell me ,thanks~

我有同样的问题。本来运行好好的项目突然出现这个问题，我原本以为是代码的原因，但是我从git拉下来可以运行的代码也出现了这个问题。是不是我的Android环境在mac上出现问题了。一定要帮帮我解决一下这个问题。谢谢你~

[rochapablo]

This worked for me (still not happy)

    compile ('com.facebook.react:react-native:0.48.4') { force = true }

Where 0.48.4 is your current version

[Taym95]

This should work!
compile ('com.facebook.react:react-native:YOUR_REACT_NATIVE_VERSION') { force = true }
instead of
compile "com.facebook.react:react-native:+"
But why?

[rochapablo]

Indeed! Why!?

Last Friday it was working all good and yesterday I just start the project without changes and I got that error.

So, if you guys know why this start please, let me know.

[jeffzing]

@rochapablo apparently, your android react-native version ahead of your react-native version,use react-native:+ is not preciseness