[Android] Deprecated OKHeaders from OKHttp

[mlumbroso]

On compiling with RN 0.31, I have this error message :

C:\Dev\node_modules\react-native-fetch-blob\android\src\main\java\com\RNFetchBlob\RNFetchBlobReq.java:48: error: cannot find symbol
import okhttp3.internal.http.OkHeaders;
                            ^
  symbol:   class OkHeaders
  location: package okhttp3.internal.http
Note: C:\Dev\node_modules\react-native-fetch-blob\android\src\main\java\com\RNFetchBlob\RNFetchBlobUtils.java uses or overrides a deprecated API.

:react-native-fetch-blob:compileReleaseJavaWithJavac FAILED

After a little investigation, OKHeaders.java was removed from version 3.4.0
https://github.com/square/okhttp/tree/parent-3.4.0/okhttp/src/main/java/okhttp3/internal/http

Last version to include it is 3.3.1
https://github.com/square/okhttp/tree/parent-3.3.1/okhttp/src/main/java/okhttp3/internal/http

I don't know what's best here :

1. Either inform users to downgrade okhttp to use 3.3.1
2. Modify the RNFetchBlobReq.java to use HttpHeaders that replace OKHeaders.

Don't know the potential drawbacks of either method, will let you make that choice ;-)

[mlumbroso]

Trying to use
compile 'com.squareup.okhttp3:okhttp:3.3.1'
didn't work actually...

Modifying the RNFetchBlobReq.java file did work, in fact, after looking rapidly at the code, I didn't even find where OKHeaders was used.

[wkh237]

@mlumbroso , thank you so much for doing the investigation 👍 I haven't tried the library on RN 0.31 yet, but I'll try to figure out where the problem is 😏

[wkh237]

@mlumbroso , I've fixed the issue by removing the import state, please try install latest version 0.8.2 I suppose it should work properly now, if it doesn't please feel free reopen this issue.

[tadas-subonis]

I believe it is still not fixed as I am getting errors like:

node_modules\react-native-fetch-blob\android\src\main\java\com\RNFetchBlob\Response\RNFetchBlobDefaultResp.java:12: error: package okhttp3 does not exist
import okhttp3.Call;

Also, I've found that lib's
build.gradle file has

dependencies {
    compile 'com.facebook.react:react-native:+'
    //{RNFetchBlob_PRE_0.28_DEPDENDENCY}
}

and changing it to

dependencies {
    compile 'com.facebook.react:react-native:+'
    compile 'com.squareup.okhttp3:okhttp:3.4.1'
}

fixes the problem

[wkh237]

@tadas-subonis , Thank you for your information. I'll reopen this issue in case someone getting the same error, I'll take some time to fix this issue.

[wkh237]

Added OkHttp dependency cddd160

[wkh237]

Add Android OkHttp dependency that overrides react-native's OkHttp dependency may lead to app crash when using Debug Mode, therefore I removed the dependency again, and use another way to fix this problem.

See commit