01-08 17:22:40.761: E/AndroidRuntime(9509): FATAL EXCEPTION: main
01-08 17:22:40.761: E/AndroidRuntime(9509): java.lang.NoClassDefFoundError: com.soundcloud.api.ApiWrapper
01-08 17:22:40.761: E/AndroidRuntime(9509):     at com.example.soundcloudexample.activities.MainActivity.onCreate(MainActivity.java:22)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at android.app.Activity.performCreate(Activity.java:5133)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at android.os.Handler.dispatchMessage(Handler.java:99)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at android.os.Looper.loop(Looper.java:137)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at android.app.ActivityThread.main(ActivityThread.java:5103)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at java.lang.reflect.Method.invokeNative(Native Method)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at java.lang.reflect.Method.invoke(Method.java:525)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
01-08 17:22:40.761: E/AndroidRuntime(9509):     at dalvik.system.NativeStart.main(Native Method)

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    final ApiWrapper wrapper = new ApiWrapper(
            SoundCloudConf.CLIENT_ID,
            SoundCloudConf.CLIENT_SECRET,
            SoundCloudConf.REDIRECT_URI,
            null /* token */);
    WebView webView = (WebView) findViewById(R.id.webview);
    webView.setWebViewClient(new WebViewClient() {
        @Override
        public boolean shouldOverrideUrlLoading(final WebView view, String url) {
                if (url.startsWith(SoundCloudConf.REDIRECT_URI.toString())) {
                    Uri result = Uri.parse(url);
                    String error = result.getQueryParameter("error");
                    String code = result.getQueryParameter("code");
                }
                return true;
        }
    });

     webView.loadUrl(wrapper.authorizationCodeUrl(Endpoints.FACEBOOK_CONNECT, Token.SCOPE_NON_EXPIRING).toString());
}