version5.0.1 java.lang.NoClassDefFoundError: com.linecorp.linesdk.internal.nwclient.OpenIdSigningKeyResolver

Such an error occurs. What are the possible causes?

E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: com.example.nrikiji.linetest314, PID: 2431
                  java.lang.NoClassDefFoundError: com.linecorp.linesdk.internal.nwclient.OpenIdSigningKeyResolver
                      at com.linecorp.linesdk.internal.nwclient.LineAuthenticationApiClient.<init>(LineAuthenticationApiClient.java:59)
                      at com.linecorp.linesdk.internal.nwclient.LineAuthenticationApiClient.<init>(LineAuthenticationApiClient.java:71)
                      at com.linecorp.linesdk.auth.internal.LineAuthenticationController.<init>(LineAuthenticationController.java:75)
                      at com.linecorp.linesdk.auth.internal.LineAuthenticationActivity.onCreate(LineAuthenticationActivity.java:90)
                      at android.app.Activity.performCreate(Activity.java:6285)
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2524)
                      at android.app.ActivityThread.access$900(ActivityThread.java:154)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1391)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:234)
                      at android.app.ActivityThread.main(ActivityThread.java:5526)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

https://developers.line.biz/ja/docs/android-sdk/integrate-line-login/ When installing the SDK and executing the following code by this procedure it will crash…

package com.example.nrikiji.linetest314;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;

import com.linecorp.linesdk.Scope;
import com.linecorp.linesdk.auth.LineAuthenticationParams;
import com.linecorp.linesdk.auth.LineLoginApi;
import com.linecorp.linesdk.auth.LineLoginResult;

import java.util.Arrays;

public class MainActivity extends AppCompatActivity {

    private static final int REQUEST_CODE = 1;

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

        try{
            // App-to-app login
            Intent loginIntent = LineLoginApi.getLoginIntent(
                    getApplicationContext(),
                    "1565553788",
                    new LineAuthenticationParams.Builder()
                            .scopes(Arrays.asList(Scope.PROFILE))
                            .build());
            startActivityForResult(loginIntent, REQUEST_CODE); // ★ Crash!!

        }
        catch(Exception e) {
            Log.e("ERROR", e.toString());
        }
    }

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode != REQUEST_CODE) {
            Log.e("ERROR", "Unsupported Request");
            return;
        }

        LineLoginResult result = LineLoginApi.getLoginResultFromIntent(data);

        switch (result.getResponseCode()) {

            case SUCCESS:
                // Login successful
                String accessToken = result.getLineCredential().getAccessToken().getTokenString();
                break;

            case CANCEL:
                // Login canceled by user
                Log.e("ERROR", "LINE Login Canceled by user.");
                break;

            default:
                // Login canceled due to other error
                Log.e("ERROR", "Login FAILED!");
                Log.e("ERROR", result.getErrorData().toString());
        }
    }}

The version of android studio is 3.1.4 and the development environment can not be upgraded above this due to circumstances of …

[nrikiji]

Sorry. I tried it again and it went well. The setting of gradle may have been wrong

build.gradle

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation(name:'line-sdk-5.0.1', ext:'aar')
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support:customtabs:28.0.0'
    implementation('com.madgag.spongycastle:prov:1.58.0.0') {
        exclude group: 'junit', module: 'junit'
    }

　//  It might be missing here!!
    runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.10.5'
    runtimeOnly ('io.jsonwebtoken:jjwt-orgjson:0.10.5') {
        exclude group: 'org.json', module: 'json' //provided by Android natively
    }
}

[LiYing2010]

congratulations~~~