Getting java.lang.ClassNotFoundException

[dotnetdreamer]

Please, provide the details below:

Did you verify this is a real problem by searching the NativeScript Forum and the other open issues in this repo?

Yes

Tell us about the problem

I have used one library here at https://search.maven.org/#artifactdetails%7Ccom.squareup.okhttp3%7Cbenchmarks%7C3.10.0%7Cjar but i am not able to succeed.

Please provide the following version numbers that your issue occurs with:

Did the error happen while the app was being constructed? (buildtime error)

No

Did the error happen while the app was executing? (runtime error)

Yes

Please tell us how to recreate the issue in as much detail as possible.

include.gradle:

android {
}
repositories {
    mavenCentral()
}

dependencies {
    compile "com.squareup.okhttp3:okhttp:3.10.0"
}

In the class:

declare const com: any;
   greet() {
        try {
            console.log(typeof com.squareup.okhttp.OkHttpClient);
            let client = new com.squareup.okhttp.OkHttpClient();
            let requestBody = new com.squareup.okhttp.MultipartBuilder()
                    .type(com.squareup.okhttp.MultipartBuilder.FORM)
                    // .addFormDataPart("file", file.getName(), 
                    //     com.squareup.okhttp.RequestBody.create(com.squareup.okhttp.MediaType.parse("text/csv"), file))
                    .addFormDataPart("firstName", "Idrees")
                    .build();
    
            let request = new com.squareup.okhttp.Request.Builder()
                    .url('http://localhost:10011/home/fileUpload')
                    .post(requestBody)
                    .build();
    
            client.newCall(request).enqueue(() => {
            });
    
        } catch (e) {
            console.log('-----------------error----------------');
            console.log(e);
        }
    }

But i am getting:

JS: -----------------error----------------
JS: Error: java.lang.ClassNotFoundException: com.squareup.okhttp.OkHttpClient
JS:     java.lang.Class.classForName(Native Method)
JS:     java.lang.Class.forName(Class.java:453)
JS:     java.lang.Class.forName(Class.java:378)
JS:     com.tns.Runtime.getClassForName(Runtime.java:1010)
JS:     com.tns.ClassResolver.resolveClass(ClassResolver.java:27)
JS:     com.tns.Runtime.resolveClass(Runtime.java:581)
JS:     com.tns.Runtime.callJSMethodNative(Native Method)
JS:     com.tns.Runtime.dispatchCallJSMethodNative(Runtime.java:1088)
JS:     com.tns.Runtime.callJSMethodImpl(Runtime.java:970)
JS:     com.tns.Runtime.callJSMethod(Runtime.java:957)
JS:     com.tns.Runtime.callJSMethod(Runtime.java:941)
JS:     com.tns.Runtime.callJSMethod(Runtime.java:933)
JS:     com.tns.gen.java.lang.Runnable.run(Runnable.java:10)
JS:     android.os.Handler.handleCallback(Handler.java:789)
JS:     android.os.Handler.dispatchMessage(Handler.java:98)
JS:     android.os.Looper.loop(Looper.java:164)
JS:     android.app.ActivityThread.main(ActivityThread.java:6938)
JS:     java.lang.reflect.Method.invoke(Native Method)
JS:     com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
JS:     com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
JS: Caused by: java.lang.ClassNotFoundException: Didn't find class "com.squareup.okhttp.OkHttpClient" on path: DexPathList[[zip file "/data/app/org.nativescript.demong-tXcVa09BodDtVGlxcv9aLQ==/base.apk"],nativeLibraryDirectories=[/data/app/org.nativescript.demong-tXcVa09BodDtVGlxcv9aLQ==/lib/arm, /data/app/org.nativescript.demong-tXcVa09BodDtVGlxcv9aLQ==/base.apk!/lib/armeabi-v7a, /system/lib, /vendor/lib]]

If i output the i am getting all the functions available with console.dir(com.squareup.okhttp.OkHttpClient):

JS: Address()
JS: Dns()
JS: CertificatePinner()
JS: Authenticator()JS: HttpUrl()
JS: Request()JS: Response()
JS: Cache()
JS: CacheControl()
JS: Headers()
JS: Call()
JS: OkHttpClient()
JS: Callback()
JS: Challenge()
JS: CipherSuite()
JS: Connection()
JS: Handshake()
JS: Protocol()
JS: Route()
JS: ConnectionPool()
JS: ConnectionSpec()
JS: TlsVersion()
JS: Credentials()
JS: Dispatcher()
JS: FormEncodingBuilder()
JS: RequestBody()
JS: Interceptor()
JS: MediaType()
JS: MultipartBuilder()
JS: OkUrlFactory()
JS: ResponseBody()
JS: benchmarks: {}
JS: internal: {
JS:   "io": {},
JS:   "http": {},
JS:   "tls": {},
JS:   "framed": {},
JS:   "huc": {},
JS:   "ws": {}
JS: }

i have attached the zip file here https://we.tl/ElgFxbQHx0

[darind]

@dotnetdreamer, there seems to be a couple of issues with your code. You are using the okhttp library version 3.10.0 which according to its documentation has slightly different packages and classes.

• You are trying to use the com.squareup.okhttp package which has been renamed to okhttp3.
• There's no MultipartBuilder class in 3.10.0
• There's no type method on the Builder but rather setType
• You cannot pass an anonymous javascript callback to the enqueue method because it expects a java interface that you need to implement.

Here's the revised version of your code which should work with 3.10.0:

let client = new okhttp3.OkHttpClient();

let requestBody = new okhttp3.MultipartBody.Builder()
    .setType(okhttp3.MultipartBody.FORM)
    .addFormDataPart("firstName", "Idrees")
    .build();

let request = new okhttp3.Request.Builder()
    .url('http://localhost:10011/home/fileUpload')
    .post(requestBody)
    .build();

let callback = new okhttp3.Callback({
    onResponse: (call, e) => {
        console.log("Success");
    },
    onFailure: (call, e) => {
        console.log(e);
    }
});

client.newCall(request).enqueue(callback);

And here's the modified version of your plugin that you may try nativescript-http-formdata.zip

[dotnetdreamer]

@darind wow in 1 minute you made me realize all the mistakes i was doing. Won't thank you but rather hug you. Thanks for your time that you spent on it 🥇 it worked.