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Android

Posted by Zohaib Ahmad
Zohaib Ahmad
2,843 Points

Error java.lang.NoClassDefFoundError: com.squareup.okhttp.OkHttpClient at capptify.com.stormy.MainActivity

Im getting this error, and no idea how to fix it.

Any help would be appreciated.

Here is my Logcat:

09-14 13:32:31.690    1695-1695/capptify.com.stormy E/dalvikvm﹕ Could not find class 'com.squareup.okhttp.OkHttpClient', referenced from method capptify.com.stormy.MainActivity.onCreate
09-14 13:32:31.690    1695-1695/capptify.com.stormy W/dalvikvm﹕ VFY: unable to resolve new-instance 37 (Lcom/squareup/okhttp/OkHttpClient;) in Lcapptify/com/stormy/MainActivity;
09-14 13:32:31.700    1695-1695/capptify.com.stormy D/dalvikvm﹕ VFY: replacing opcode 0x22 at 0x0050
09-14 13:32:31.700    1695-1695/capptify.com.stormy D/dalvikvm﹕ DexOpt: unable to opt direct call 0x002b at 0x58 in Lcapptify/com/stormy/MainActivity;.onCreate
09-14 13:32:31.700    1695-1695/capptify.com.stormy D/dalvikvm﹕ DexOpt: unable to opt direct call 0x002d at 0x64 in Lcapptify/com/stormy/MainActivity;.onCreate
09-14 13:32:31.700    1695-1695/capptify.com.stormy I/dalvikvm﹕ Failed resolving Lcapptify/com/stormy/MainActivity$1; interface 36 'Lcom/squareup/okhttp/Callback;'
09-14 13:32:31.700    1695-1695/capptify.com.stormy W/dalvikvm﹕ Link of class 'Lcapptify/com/stormy/MainActivity$1;' failed
09-14 13:32:31.700    1695-1695/capptify.com.stormy D/dalvikvm﹕ DexOpt: unable to opt direct call 0x0014 at 0x82 in Lcapptify/com/stormy/MainActivity;.onCreate
09-14 13:32:31.890    1695-1695/capptify.com.stormy D/AndroidRuntime﹕ Shutting down VM
09-14 13:32:31.890    1695-1695/capptify.com.stormy W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0xb1ababa8)
09-14 13:32:31.920    1695-1695/capptify.com.stormy E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: capptify.com.stormy, PID: 1695
    java.lang.NoClassDefFoundError: com.squareup.okhttp.OkHttpClient
            at capptify.com.stormy.MainActivity.onCreate(MainActivity.java:34)
            at android.app.Activity.performCreate(Activity.java:5231)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
            at android.app.ActivityThread.access$800(ActivityThread.java:135)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5001)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
            at dalvik.system.NativeStart.main(Native Method)
09-14 13:37:32.450    1695-1695/capptify.com.stormy I/Process﹕ Sending signal. PID: 1695 SIG: 9
Harry James
Harry James
14,780 Points

Hey Zohaib!

Could you please provide your build.gradle file for the app module and I'll take a look for you :)

Zohaib Ahmad
Zohaib Ahmad
2,843 Points

Harry James Thanks so much!

Here is my app file:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 21
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "capptify.com.stormy"
        minSdkVersion 14
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:23.0.1'
    compile 'com.squareup.okhttp:okhttp:2.5.0'
}
Harry James
Harry James
14,780 Points

Hey again Zohaib!

Looks like you do in fact have the OkHttp dependency - that rules that out.

I think I now know what is causing this but just so that I can check, can I ask that you paste your MainActivity.java contents here, including the full list of imports.

I'll be in touch tomorrow :)

3 Answers

Zohaib Ahmad
Zohaib Ahmad
2,843 Points
Zohaib Ahmad
Zohaib Ahmad
2,843 Points

Hi Harry James !

Sorry for the late response, I've been so discouraged that this hasn't been working :( I think that the problem has to do with the "OkHttpClient client = new OkHttpClient();" line, when I check the log, it says class not found. Also, I have a new version of Android Studip (6.0) hopefully that's not what is causing the problem. Lastly, now I just lost my R class... It says cannot resolve symbol and the R goes in red.

Im in the middle of a video, but here is my MainActivity.Java:

package capptify.com.stormy;

import android.app.Activity;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;

import com.squareup.okhttp.Call;
import com.squareup.okhttp.Callback;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

import java.io.IOException;


public class MainActivity extends Activity {

    public static final String TAG = MainActivity.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        String apiKey = "7ca1a9a89c6d46587bba680d61913531";
        double latitude = 37.8267;
        double longitude = -122.423;
        String forecastURL = "https://api.forecast.io/forecast/" + apiKey +
                "/" + latitude + "," + longitude;

        if (isNetworkAvailable) {

            OkHttpClient client = new OkHttpClient();
            Request request = new Request.Builder()
                    .url(forecastURL)
                    .build();

            Call call = client.newCall(request);
            call.enqueue(new Callback() {
                @Override
                public void onFailure(Request request, IOException e) {

                }

                @Override
                public void onResponse(Response response) throws IOException {
                    try {
                        Log.v(TAG, response.body().string());
                        if (response.isSuccessful()) {
                        } else {
                            alertUserAboutError();
                        }
                    } catch (IOException e) {
                        Log.e(TAG, "Exception caught: ", e);
                    }

                }
            });
        }
        Log.d(TAG, "Main UI code is running!");
    }

    private void alertUserAboutError() {
        AlertDialogueFragment dialog = new AlertDialogueFragment();
        dialog.show(getFragmentManager(), "error_dialog");
    }
}
Zohaib Ahmad
Zohaib Ahmad
2,843 Points
Zohaib Ahmad
Zohaib Ahmad
2,843 Points

Hey Harry James Are you there? Can you please help with this?

Harry James
Harry James
14,780 Points

Hey Zohaib!

Sorry for my late response! I have been away over the weekend so weren't able to take a look at this. I'll make sure to get back to you tomorrow though :)

Harry James
Harry James
14,780 Points
Harry James
Harry James
14,780 Points

Hey again Zohaib!

It looks like you've written your code correctly here as well so it leads me to believe that this error is being caused during the building process somehow (This is a compile-time error, not a runtime error).

First of all, we can fix the issue with the R class usually by just regenerating it. To do this, go to the Project view on the dropdown and navigate to Stormy >> app >> build >> generated >> source >> r >> debug >> capptify.com.stormy. Then, right-click on the R class and Delete it - it will regenerate when you next build your project.

As for your main issue, if it is still not fixed then I would like you to post your project files here so that I can take a look into this a bit more. I have a few things I would like to try out to see if they solve the issue so if you're still having issues, follow the below instructions to share your project:

## WARNING: Before you continue, you may wish to remove your API Key for Stormy. This is not a major deal as it's still possible for people to discover your API key when the app makes a direct connection to Forecast.io - if someone had access to the key it only means they can call for weather data from your key. ##

To share your project, right-click on your project in Android Studio and press Show in Explorer. Then, upload your project directory into a service like Google Drive, SkyDrive or another service of your choice.

Then, share the project via a URL and I'll download it and try and reproduce your problem, then find a solution.

Hopefully we can get the issue solved soon :)

albara khaled
albara khaled
5,018 Points

Any update about this issue, I'm getting the same :(

Harry James
Harry James
14,780 Points

Hey albara,

Sorry for the late response.

If you're still having issues, could you please provide your MainActivity.java and build.gradle for the app module here so that I could take a look into the issue further?