Ytukyg

I have an app, that i was developing wihtin Eclipse and ANT and now I'm trying to upgrade the project to Android Studio (AS) and Gradle. The app uses the ownCloud-android-library to upload and download files from an ownCloud or Nextcloud instance.

Before upgrading i was using an outdated ownCloud-Android-Library version, which i'd like to update within the migration. I have placed the reference to the latest ownCloud-Android-library into my Gradle file

dependencies {

    implementation 'com.github.owncloud:android-library:oc-android-library-0.9.22'

}

together with

allprojects {

    repositories {

        maven { url 'https://jitpack.io' }

    }

}

After successfully building my app i tested it within an emulator and found an issue when performing the ReadRemoteFolderOperation() on any of my test instances (which are ownCloud and Nextcloud server).

The immediate result after stepping over the ReadRemoteFolderOperation is "HOST_NOT_AVAILABLE". When i open the browser on the emulator and browse to the front page of my ownCloud instance it's working - i can also login.

When i take a look into the logcat i can observe the following two Exceptions:

E/ReadRemoteFolderOperation: Synchronized /: Unexpected exception

java.lang.IllegalArgumentException: account is null

    at android.accounts.AccountManager.getUserData(AccountManager.java:507)

    at com.owncloud.android.lib.common.accounts.AccountUtils.getUserId(AccountUtils.java:198)

    at com.owncloud.android.lib.common.OwnCloudClient.getUserFilesWebDavUri(OwnCloudClient.java:262)

    at com.owncloud.android.lib.resources.files.ReadRemoteFolderOperation.run(ReadRemoteFolderOperation.java:79)

    at com.owncloud.android.lib.common.operations.RemoteOperation.runOperation(RemoteOperation.java:252)

    at com.owncloud.android.lib.common.operations.RemoteOperation.execute(RemoteOperation.java:215)



com.owncloud.android.lib.common.http.HttpClient: Could not setup SSL system.

java.lang.NullPointerException: Attempt to invoke virtual method 'java.io.File android.content.Context.getFilesDir()' on a null object reference

    at com.owncloud.android.lib.common.network.NetworkUtils.getKnownServersStore(NetworkUtils.java:89)

    at com.owncloud.android.lib.common.http.HttpClient.getOkHttpClient(HttpClient.java:78)

    at com.owncloud.android.lib.common.http.methods.HttpBaseMethod.<init>(HttpBaseMethod.java:58)

    at com.owncloud.android.lib.common.http.methods.webdav.DavMethod.<init>(DavMethod.java:51)

    at com.owncloud.android.lib.common.http.methods.webdav.PropfindMethod.<init>(PropfindMethod.java:52)

    at com.owncloud.android.lib.resources.files.ReadRemoteFolderOperation.run(ReadRemoteFolderOperation.java:81)

    at com.owncloud.android.lib.common.operations.RemoteOperation.runOperation(RemoteOperation.java:252)

    at com.owncloud.android.lib.common.operations.RemoteOperation.execute(RemoteOperation.java:215)

I can't get a clue out of this exception.

Here is how i run the 1st variant:

ReadRemoteFolderOperation readRemoteFolder = new ReadRemoteFolderOperation(folderInCloud);

    RemoteOperationResult readRemoteFolderResult = readRemoteFolder.execute(ocClient);

    ResultCode resultCode = readRemoteFolderResult.getCode();

Here is how i run the 2nd variant:

ReadRemoteFolderOperation readOperation = new ReadRemoteFolderOperation(FileUtils.PATH_SEPARATOR);

RemoteOperationResult result = new RemoteOperationResult(ResultCode.UNKNOWN_ERROR);

result = readOperation.execute(ownCloudClient);

Here is how is setup my ownCloudClient instance:

ocClient = new OwnCloudClient(serverCredentials.getHostUri());

ocClient.setFollowRedirects(true);

// the out commente lines below were shown in the sample_client, 

// but it doesn't seem to work either

//      ocClient.setCredentials(

//              OwnCloudCredentialsFactory.newBasicCredentials(

//                      serverCredentials.getUsername(),

//                      serverCredentials.getPassword()

//              ));

ocClient.setBaseUri(serverCredentials.getHostUri());

OwnCloudAccount ocAccount = new OwnCloudAccount(serverCredentials.getHostUri(), serverCredentials);

ocClient.setAccount(ocAccount);

serverCredentials is a class derived from OwncloudCredentials. The only method i override is the applyTo method. Here is how it looks:

@Override

public void applyTo(OwnCloudClient ownCloudClient) {

    // this is old code from the pre AS gradle era. 

    // The methods getParams() and getState weren't available on the new library anymore

    //      List<String> authPrefs = new ArrayList<String>(1);

    //        authPrefs.add(AuthPolicy.BASIC);

    //        ownCloudClient.getParams().setParameter(AuthPolicy.AUTH_SCHEME_PRIORITY, authPrefs);        

    //        

    //        ownCloudClient.getParams().setAuthenticationPreemptive(true);

    //        ownCloudClient.getState().setCredentials(AuthScope.ANY,

    //              new UsernamePasswordCredentials(userName, password)

    //      );



    // Clear previous basic credentials

    HttpClient.deleteHeaderForAllRequests(HttpConstants.AUTHORIZATION_HEADER);

    HttpClient.deleteHeaderForAllRequests(HttpConstants.COOKIE_HEADER);



    HttpClient.addHeaderForAllRequests(HttpConstants.AUTHORIZATION_HEADER,

            Credentials.basic(userName, password));



    Uri baseUri = this.getHostUri();



    OwnCloudAccount ocAccount = new OwnCloudAccount(baseUri, this);

    ownCloudClient.setAccount(ocAccount);

    ownCloudClient.setBaseUri(baseUri);

}

From the stack trace of the first exception, i would assume, that i need a working ownCloud-account on my mobile/emulator (which doesn't make sense to me). I set up the official ownCloud app, which was working fine.

Does anyone have an idea what could be the problem?

Thanks in advance,

Michael