Merge pull request #626 from owncloud/add_lost_documentation_of_libraries_for_mobile_clients

Added developer documentation for Android and iOS libraries to get acces...
This commit is contained in:
Carla Schroder
2014-10-29 10:52:38 -07:00
20 changed files with 1472 additions and 0 deletions

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Examples
========
Init the library
----------------
Start using the library; it is needed to init the object mClient that will be
in charge of keeping the communication with the server.
Code example
~~~~~~~~~~~~
.. code-block:: java
public class MainActivity extends Activity
implements OnRemoteOperationListener,
OnDatatransferProgressListener {
private OwnCloudClient mClient;
private Handler mHandler = new Handler();
...
public void onCreate(Bundle savedInstanceState) {
...
// Parse URI to the base URL of the ownCloud server
Uri serverUri = Uri.parse(getString(R.string.server_base_url));
// Create client object to perform remote operations
mClient = OwnCloudClientFactory.createOwnCloudClient(
serverUri,
this,
// Activity or Service context
true);
Set credentials
---------------
Authentication on the app is possible by 3 different methods:
* Basic authentication, user name and password
* Bearer access token (oAuth2)
* Cookie (SAML-based single-sign-on)
Code example
~~~~~~~~~~~~
.. code-block:: java
package com.owncloud.android.lib.common;
public class OwnCloudClient extends HttpClient {
...
// Set basic credentials
client.setCredentials(
OwnCloudCredentialsFactory.newBasicCredentials(username, password)
);
// Set bearer access token
client.setCredentials(
OwnCloudCredentialsFactory.newBearerCredentials(accessToken)
);
// Set SAML2 session token
client.setCredentials(
OwnCloudCredentialsFactory.newSamlSsoCredentials(cookie)
);
}
Create a folder
---------------
Create a new folder on the cloud server, the info needed to be sent is the path
of the new folder.
Code example
~~~~~~~~~~~~
 
.. code-block:: java
private void startFolderCreation(String newFolderPath) {
CreateRemoteFolderOperation createOperation = new CreateRemoteFolderOperation(newFolderPath, false);
createOperation.execute( mClient , this , mHandler);
}
@Override
public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
if (operation instanceof CreateRemoteFolderOperation) {
if (result.isSuccess()) {
// do your stuff here
}
}
}
Read folder
-----------
Get the content of an existing folder on the cloud server, the info needed to
be sent is the path of the folder, in the example shown it has been asked the
content of the root folder. As answer of this method, it will be received an
array with all the files and folders stored in the selected folder.
Code example
~~~~~~~~~~~~
.. code-block:: java
private void startReadRootFolder() {
ReadRemoteFolderOperation refreshOperation = new ReadRemoteFolderOperation(FileUtils.PATH_SEPARATOR); 
// root folder
refreshOperation.execute(mClient, this, mHandler);
}
@Override
public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
if (operation instanceof ReadRemoteFolderOperation) {
if (result.isSuccess()) {
List< RemoteFile > files = result.getData();
// do your stuff here
}
}
}
Read file
---------
Get information related to a certain file or folder, information obtained is:
``filePath``, ``filename``, ``isDirectory``, ``size`` and ``date``.
Code example
~~~~~~~~~~~~
.. code-block:: java
private void startReadFileProperties(String filePath) {
ReadRemoteFileOperation readOperation = new ReadRemoteFileOperation(filePath);
readOperation.execute(mClient, this, mHandler);
}
@Override
public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
if (operation instanceof ReadRemoteFileOperation) {
if (result.isSuccess()) {
RemoteFile file = result.getData()[0];
// do your stuff here
}
}
}
Delete file or folder
---------------------
Delete a file or folder on the cloud server. The info needed is the path of
folder/file to be deleted.
Code example
~~~~~~~~~~~~
.. code-block:: java
private void startRemoveFile(String filePath) {
RemoveRemoteFileOperation removeOperation = new RemoveRemoteFileOperation(remotePath);
removeOperation.execute( mClient , this , mHandler);
}
@Override
public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
if (operation instanceof RemoveRemoteFileOperation) {
if (result.isSuccess()) {
// do your stuff here
}
}
}
Download a file
---------------
Download an existing file on the cloud server. The info needed is path of the
file on the server and targetDirectory, path where the file will be stored on
the device.
Code example
~~~~~~~~~~~~
.. code-block:: java
private void startDownload(String filePath, File targetDirectory) {
DownloadRemoteFileOperation downloadOperation = new DownloadRemoteFileOperation(filePath, targetDirectory.getAbsolutePath());
downloadOperation.addDatatransferProgressListener(this);
downloadOperation.execute( mClient, this, mHandler);
}
@Override
public void onRemoteOperationFinish( RemoteOperation operation, RemoteOperationResult result) {
if (operation instanceof DownloadRemoteFileOperation) {
if (result.isSuccess()) {
// do your stuff here
}
}
}
@Override
public void onTransferProgress( long progressRate, long totalTransferredSoFar, long totalToTransfer, String fileName) {
mHandler.post( new Runnable() {
@Override
public void run() {
// do your UI updates about progress here
}
});
}
Upload a file
-------------
Upload a new file to the cloud server. The info needed is fileToUpload, path
where the file is stored on the device, remotePath, path where the file will be
stored on the server and mimeType.
Code example
~~~~~~~~~~~~
.. code-block:: java
private void startUpload (File fileToUpload, String remotePath, String mimeType) {
UploadRemoteFileOperation uploadOperation = new UploadRemoteFileOperation( fileToUpload.getAbsolutePath(), remotePath, mimeType);
uploadOperation.addDatatransferProgressListener(this);
uploadOperation.execute(mClient, this, mHandler);
}
@Override
public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
if (operation instanceof UploadRemoteFileOperation) {
if (result.isSuccess()) {
// do your stuff here
}
}
}
@Override
public void onTransferProgress(long progressRate, long totalTransferredSoFar, long totalToTransfer, String fileName) {
mHandler.post( new Runnable() {
@Override
public void run() {
// do your UI updates about progress here
}
});
}
Move a file or folder
---------------------
Move an exisintg file or folder to a different location in the ownCloud server. Parameters needed are the path
to the file or folder to move, and the new path desired for it. The parent folder of the new path must exist in
the server.
When the parameter 'overwrite' is set to 'true', the file or folder is moved even if the new path is already
used by a different file or folder. This one will be replaced by the former.
Code example
~~~~~~~~~~~~
 
.. code-block:: java
private void startFileMove(String filePath, String newFilePath, boolean overwrite) {
MoveRemoteFileOperation moveOperation = new MoveRemoteFileOperation(filePath, newFilePath, overwrite);
moveOperation.execute( mClient , this , mHandler);
}
@Override
public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
if (operation instanceof MoveRemoteFileOperation) {
if (result.isSuccess()) {
// do your stuff here
}
}
}
Read shared items by link
-------------------------
Get information about what files and folder are shared by link (the object
mClient contains the information about the server url and account)
Code example
~~~~~~~~~~~~
.. code-block:: java
private void startAllSharesRetrieval() {
GetRemoteSharesOperation getSharesOp = new GetRemoteSharesOperation();
getSharesOp.execute( mClient , this , mHandler);
}
@Override
public void onRemoteOperationFinish( RemoteOperation operation, RemoteOperationResult result) {
if (operation instanceof GetRemoteSharesOperation) {
if (result.isSuccess()) {
ArrayList< OCShare > shares = new ArrayList< OCShare >();
for (Object obj: result.getData()) {
shares.add(( OCShare) obj);
}
// do your stuff here
}
}
}
Get the share resources for a given file or folder
--------------------------------------------------
Get information about what files and folder are shared by link on a certain
folder. The info needed is filePath, path of the file/folder on the server, the
Boolean variable, getReshares, come from the Sharing api, from the moment it is
not in use within the ownCloud Android library.
Code example
~~~~~~~~~~~~
.. code-block:: java
private void startSharesRetrievalForFileOrFolder(String filePath, boolean getReshares) {
GeteRemoteSharesForFileOperation operation = new GetRemoteSharesForFileOperation(filePath, getReshares, false);
operation.execute( mClient, this, mHandler);
}
private void startSharesRetrievalForFilesInFolder(String folderPath, boolean getReshares) {
GetRemoteSharesForFileOperation operation = new GetRemoteSharesForFileOperation(folderPath, getReshares, true);
operation.execute( mClient, this, mHandler);
}
@Override
public void onRemoteOperationFinish( RemoteOperation operation, RemoteOperationResult result) {
if (operation instanceof GetRemoteSharesForFileOperation) {
if (result.isSuccess()) {
ArrayList< OCShare > shares = new ArrayList< OCShare >();
for (Object obj: result.getData()) {
shares.add(( OCShare) obj);
}
// do your stuff here
}
}
}
Share link of file or folder
-----------------------------
Share a file or a folder from your cloud server by link.
The info needed is filePath, the path of the item that you want to share and
Password, this comes from the Sharing api, from the moment it is not in use
within the ownCloud Android library.
Code example
~~~~~~~~~~~~
.. code-block:: java
private void startCreationOfPublicShareForFile(String filePath, String password) {
CreateRemoteShareOperation operation = new CreateRemoteShareOperation(filePath, ShareType.PUBLIC_LINK, "", false, password, 1);
operation.execute( mClient , this , mHandler);
}
private void startCreationOfGroupShareForFile(String filePath, String groupId) {
CreateRemoteShareOperation operation = new CreateRemoteShareOperation(filePath, ShareType.GROUP, groupId, false , "", 31);
operation.execute(mClient, this, mHandler);
}
private void startCreationOfUserShareForFile(String filePath, String userId) {
CreateRemoteShareOperation operation = new CreateRemoteShareOperation(filePath, ShareType.USER, userId, false, "", 31);
operation.execute(mClient, this, mHandler);
}
@Override
public void onRemoteOperationFinish( RemoteOperation operation, RemoteOperationResult result) {
if (operation instanceof CreateRemoteShareOperation) {
if (result.isSuccess()) {
OCShare share = (OCShare) result.getData ().get(0);
// do your stuff here
}
}
}
Delete a share resource
-----------------------
Stop sharing by link a file or a folder from your cloud server.
The info needed is the object OCShare that you want to stop sharing by link.
Code example
~~~~~~~~~~~~
.. code-block:: java
private void startShareRemoval(OCShare share) {
RemoveRemoteShareOperation operation = new RemoveRemoteShareOperation((int) share.getIdRemoteShared());
operation.execute( mClient, this, mHandler);
}
@Override
public void onRemoteOperationFinish( RemoteOperation operation, RemoteOperationResult result) {
if (operation instanceof RemoveRemoteShareOperation) {
if (result.isSuccess()) {
// do your stuff here
}
}
}
Tips
----
* Credentials must be set before calling any method
* Paths must not be on URL Encoding
* Correct path: ``http://www.myowncloudserver.com/owncloud/remote.php/webdav/PopMusic``
* Wrong path: ``http://www.myowncloudserver.com/owncloud/remote.php/webdav/Pop%20Music/``
* There are some forbidden characters to be used in folder and files names on the server, same on the ownCloud Android Library "\","/","<",">",":",""","|","?","*"
* Upload and download actions may be cancelled thanks to the objects uploadOperation.cancel(), downloadOperation.cancel()
* Unit tests, before launching unit tests you have to enter your account information (server url, user and password) on TestActivity.java

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.. _androidindex:
===============================
Android Application Development
===============================
This document will describe how to the use ownCloud Android Library. The
ownCloud Android Library allows a developer to communicate with any ownCloud
server; among the features included are file synchronization, upload and
download of files, delete rename files and folders, etc.
This library may be added to a project and seamlessly integrates any
application with ownCloud.
The tool needed is any IDE for Android. This guide includes some screenshots
showing examples in Eclipse.
.. toctree::
:maxdepth: 1
:hidden:
library_installation
examples

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Library Installation
====================
Obtaining the library
---------------------
The ownCloud Android library may be obtained from the following Github repository:
`https://github.com/owncloud/android-library <https://github.com/owncloud/android-library>`_
Once obtained, this code should be compiled. The Github repository not only contains the library, but also a sample project, sample_client
sample_client properties/android/librerias
, which will assist in learning how to use the library.
Add the library to a project
----------------------------
There are different methods to add an external library to a project, then we will describe one of them.
#. Compile the ownCloud Android Library
#. Define a dependency within your project.
For that, access to
Properties > Android > Library
** **
and click on add and select the ownCloud Android library
|1000000000000270000003A317117674_png|
Then all the public classes and methods of the library will be available for your own app.
.. |1000000000000270000003A317117674_png| image:: images/1000000000000270000003A317117674.png
:width: 10.795cm
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Examples
========
Init the library
----------------
Start using the library, it is needed to init the object OCCommunication.
We recommend using the singleton method in the AppDelegate class in order to
use the ownCloud iOS library.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
#import "OCCommunication.h"
+ (OCCommunication *)sharedOCCommunication
{
static OCCommunication* sharedOCCommunication = nil;
if (sharedOCCommunication == nil)
{
sharedOCCommunication = [ [ OCCommunicationalloc] init ];
}
return sharedOCCommunication;
}
Also could happen that you need to overwrite the class AFURLSessionManager to manage SSL Certificates
.. code-block:: objective-c
#import "OCCommunication.h"
+ (OCCommunication*)sharedOCCommunication
{
static OCCommunication* sharedOCCommunication = nil;
if (sharedOCCommunication == nil)
{
//Network Upload queue for NSURLSession (iOS 7)
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration backgroundSessionConfiguration:k_session_name];
configuration.HTTPMaximumConnectionsPerHost = 1;
configuration.requestCachePolicy = NSURLRequestReloadIgnoringLocalCacheData;
OCURLSessionManager *uploadSessionManager = [[OCURLSessionManager alloc] initWithSessionConfiguration:configuration];
[uploadSessionManager.operationQueue setMaxConcurrentOperationCount:1];
[uploadSessionManager setSessionDidReceiveAuthenticationChallengeBlock:^NSURLSessionAuthChallengeDisposition (NSURLSession *session, NSURLAuthenticationChallenge *challenge, NSURLCredential * __autoreleasing *credential) {
return NSURLSessionAuthChallengePerformDefaultHandling;
}];
sharedOCCommunication = [[OCCommunication alloc] initWithUploadSessionManager:uploadSessionManager];
}
return sharedOCCommunication;
}
Set credentials
---------------
Authentication on the app is possible by 3 different methods:
* Basic authentication, user name and password
* Cookie
* Token (oAuth)
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
#Basic authentication, user name and password
[[ AppDelegate sharedOCCommunication ] setCredentialsWithUser : userName andPassword : password ];
#Authentication with cookie
[[ AppDelegate sharedOCCommunication ] setCredentialsWithCookie : cookie ];
#Authentication with token
[[ AppDelegate sharedOCCommunication ] setCredentialsOauthWithToken : token ];
Create a folder
---------------
Create a new folder on the cloud server, the info needed to be sent is the path
of the new folder.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[ AppDelegate sharedOCCommunication ] createFolder :path onCommunication : [ AppDelegate sharedOCCommunication ]
successRequest :^( NSHTTPURLResponse *response, NSString *redirectedServer) {
//Folder Created
}
failureRequest :^( NSHTTPURLResponse *response, NSError *error) {
//Failure
switch (response.statusCode) {
case kOCErrorServerUnauthorized :
//Bad credentials
break;
case kOCErrorServerForbidden :
//Forbidden
break;
case kOCErrorServerPathNotFound :
//Not Found
break;
case kOCErrorServerTimeout :
//timeout
break;
default:
//default
break;
}
}
errorBeforeRequest :^( NSError *error) {
//Error before request
if (error.code == OCErrorForbidenCharacters) {
//Forbidden characters
}
else
{
//Other error
}
}];
 
Read folder
-----------
Get the content of an existing folder on the cloud server, the info needed to
be sent is the path of the folder. As answer of this method, it will be
received an array with all the files and folders stored in the selected folder.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[ AppDelegate sharedOCCommunication] readFolder:path onCommunication:[ AppDelegate sharedOCCommunication]
successRequest:^( NSHTTPURLResponse *response, NSArray *items, NSString *redirectedServer) {
//Success
for ( OCFileDto * ocFileDto in items) {
NSLog( @"item path: %@%@" , ocFileDto.filePath, ocFileDto.fileName);
}
}
failureRequest:^( NSHTTPURLResponse *response, NSError *error) {
//Failure
switch (response.statusCode) {
case kOCErrorServerPathNotFound :
//Path not found
break;
case kOCErrorServerUnauthorized :
//Bad credentials
break;
case kOCErrorServerForbidden :
//Forbidden
break;
case kOCErrorServerTimeout :
//Timeout
break ;
default :
break;
}
}];
Read file
---------
Get information related to a certain file or folder. Although, more information
can be obtained, the library only gets the eTag.
Other properties of the file or folder may be obtained: filePath, filename,
isDirectory, size and date
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[ AppDelegate sharedOCCommunication ] readFile :path onCommunication :[ AppDelegate sharedOCCommunication ]
successRequest :^( NSHTTPURLResponse *response, NSArray *items, NSString *redirectedServer) {
OCFileDto *ocFileDto = [items objectAtIndex : 0 ];
NSLog ( @"item etag: %lld" , ocFileDto. etag); }
failureRequest :^( NSHTTPURLResponse *response, NSError *error) {
switch (response.statusCode) {
case kOCErrorServerPathNotFound:
//Path not found
break;
case kOCErrorServerUnauthorized:
//Bad credentials
break;
case kOCErrorServerForbidden:
//Forbidden
break;
case kOCErrorServerTimeout:
//Timeout
break;
default:
break;
}
}];
Move file or folder
-------------------
Move a file or folder from their current path to a new one on the cloud server.
The info needed is the origin path and the destiny path.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[ AppDelegate sharedOCCommunication ] moveFileOrFolder :sourcePath toDestiny :destinyPath onCommunication :[ AppDelegate sharedOCCommunication ]
successRequest :^( NSHTTPURLResponse *response, NSString *redirectedServer) {
//File/Folder moved or renamed
}
failureRequest :^( NSHTTPURLResponse *response, NSError *error) {
//Failure
switch (response.statusCode) {
case kOCErrorServerPathNotFound:
//Path not found
break;
case kOCErrorServerUnauthorized:
//Bad credentials
break;
case kOCErrorServerForbidden:
//Forbidden
break;
case kOCErrorServerTimeout:
//Timeout
break;
default:
break;
}
}
errorBeforeRequest :^( NSError *error) {
if (error.code == OCErrorMovingTheDestinyAndOriginAreTheSame) {
//The destiny and the origin are the same
}
else if (error.code == OCErrorMovingFolderInsideHimself) {
//Moving folder inside himself
}
else if (error.code == OCErrorMovingDestinyNameHaveForbiddenCharacters) {
//Forbidden Characters
}
else
{
//Default
}
}];
Delete file or folder
---------------------
Delete a file or folder on the cloud server. The info needed is the path to
delete.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
 
[[ AppDelegate sharedOCCommunication ] deleteFileOrFolder :path onCommunication :[ AppDelegate
sharedOCCommunication ] successRequest :^( NSHTTPURLResponse *response, NSString *redirectedServer) {
//File or Folder deleted
}
failureRequest :^( NSHTTPURLResponse *response, NSError *error) {
switch (response.statusCode) {
case kOCErrorServerPathNotFound:
//Path not found
break;
case kOCErrorServerUnauthorized:
//Bad credentials
break;
case kOCErrorServerForbidden:
//Forbidden
break;
case kOCErrorServerTimeout:
//Timeout
break;
default:
break;
}
}];
Download a file
---------------
Download an existing file on the cloud server. The info needed is the server
URL, path of the file on the server and localPath, path where the file will be
stored on the device and a boolean to indicate if is neccesary to use LIFO queue or FIFO.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
NSOperation *op = nil;
op = [[ AppDelegate sharedOCCommunication ] downloadFile :remotePath toDestiny :localPath withLIFOSystem:isLIFO onCommunication :[ AppDelegate sharedOCCommunication ]
progressDownload :^( NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {
//Calculate percent
float percent = ( float)totalBytesRead / totalBytesExpectedToRead;
NSLog ( @"Percent of download: %f" , percent); }
successRequest :^(NSHTTPURLResponse *response, NSString *redirectedServer) {
//Download complete
}
failureRequest :^(NSHTTPURLResponse *response, NSError *error) {
switch (response. statusCode) {
case kOCErrorServerUnauthorized:
//Bad credentials
break;
case kOCErrorServerForbidden:
//Forbidden
break;
case kOCErrorProxyAuth:
//Proxy access required
break;
case kOCErrorServerPathNotFound:
//Path not found
break;
default:
//Default
break;
}
}
shouldExecuteAsBackgroundTaskWithExpirationHandler :^{
[op cancel ];
}];
Download a file with background session
-------------------------------------
Download an existing file storaged on the cloud server using background session, only supported by iOS 7 and higher.
The info needed is, the server URL: path where the file is stored on the server; localPath: path where the file will be stored on the device; and NSProgress: object where get the callbacks of the upload progress.
To get the callbacks of the progress is needed use a KVO in the progress object. We add the code in this example of the call to set the KVO and the method where catch the notifications.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
NSURLSessionDownloadTask *downloadTask = nil;
NSProgress *progress = nil;
downloadTask = [_sharedOCCommunication downloadFileSession:serverUrl toDestiny:localPath defaultPriority:YES onCommunication:_sharedOCCommunication withProgress:&progress successRequest:^(NSURLResponse *response, NSURL *filePath) {
//Upload complete
} failureRequest:^(NSURLResponse *response, NSError *error) {
switch (error.code) {
case kCFURLErrorUserCancelledAuthentication:
//Authentication cancelled
break;
default:
switch (response.statusCode) {
case kOCErrorServerUnauthorized :
//Bad credentials
break;
case kOCErrorServerForbidden:
//Forbidden
break;
case kOCErrorProxyAuth:
//Proxy access required
break;
case kOCErrorServerPathNotFound:
//Path not found
break;
default:
//Default
break;
}
break;
}
}];
// Observe fractionCompleted using KVO
[progress addObserver:self forKeyPath:@"fractionCompleted" options:NSKeyValueObservingOptionNew context:NULL];
//Method to catch the progress notifications with callbacks
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
if ([keyPath isEqualToString:@"fractionCompleted"] && [object isKindOfClass:[NSProgress class]]) {
NSProgress *progress = (NSProgress *)object;
float percent = roundf (progress.fractionCompleted * 100);
//We make it on the main thread because we came from a delegate
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"Progress is %f", percent);
});
}
}
Set callback when background download task finishes
-----------------------------------------
Method to set callbacks of the pending download transfers when the app starts. It's used when there are pendings download background transfers. The block is executed when a pending background task finishes.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[AppDelegate sharedOCCommunication] setDownloadTaskComleteBlock:^NSURL *(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, NSURL *location) {
}];
Set progress callback with pending background download tasks
---------------------------------------------------
Method to set progress callbacks of the pending download transfers. It's used when there are pendings background download transfers. The block is executed when a pending task get a input porgress.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[AppDelegate sharedOCCommunication] setDownloadTaskDidGetBodyDataBlock:^(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t bytesWritten, int64_t totalBytesWritten, int64_t totalBytesExpectedToWrite) {
}];
Upload a file
-------------
Upload a new file to the cloud server. The info needed is localPath, path where
the file is stored on the device and server URL, path where the file will be
stored on the server.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
NSOperation *op = nil;
op = [[ AppDelegate sharedOCCommunication ] uploadFile :localPath toDestiny : remotePath onCommunication :[ AppDelegate sharedOCCommunication ]
progressUpload :^( NSUInteger bytesWrote, long long totalBytesWrote, long long totalBytesExpectedToWrite) {
//Calculate upload percent
if ( totalBytesExpectedToRead/1024 != 0) {
if ( bytesWrote > 0) {
float percent = totalBytesWrote* 100 / totalBytesExpectedToRead;
NSLog ( @"Percent: %f" , percent);
}
}
}
successRequest :^( NSHTTPURLResponse *response, NSString *redirectedServer) {
//Upload complete
}
failureRequest :^( NSHTTPURLResponse *response, NSString *redirectedServer, NSError *error) {
switch (response. statusCode) {
case kOCErrorServerUnauthorized :
//Bad credentials
break;
case kOCErrorServerForbidden:
//Forbidden
break;
case kOCErrorProxyAuth:
//Proxy access required
break;
case kOCErrorServerPathNotFound:
//Path not found
break;
default:
//Default
break;
}
}
failureBeforeRequest :^( NSError *error) {
switch (error.code) {
case OCErrorFileToUploadDoesNotExist:
//File does not exist
break;
default:
//Default
break;
}
}
shouldExecuteAsBackgroundTaskWithExpirationHandler :^{
[op cancel];
}];
Upload a file with background session
-------------------------------------
Upload a new file to the cloud server using background session, only supported by iOS 7 and higher.
The info needed is localPath, path where the file is stored on the device and server URL, path where the file will be stored on the server and NSProgress object where get the callbacks of the upload progress.
To get the callbacks of the progress is needed use a KVO in the progress object. We add the code in this example of the call to set the KVO and the method where catch the notifications.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
NSURLSessionUploadTask *uploadTask = nil;
NSProgress *progress = nil;
uploadTask = [[AppDelegate sharedOCCommunication] uploadFileSession:localPath toDestiny:remotePath onCommunication:[ AppDelegate sharedOCCommunication ] withProgress:&progress successRequest:^(NSURLResponse *response, NSString *redirectedServer) {
//Upload complete
} failureRequest:^(NSURLResponse *response, NSString *redirectedServer, NSError *error) {
switch (response.statusCode) {
case kOCErrorServerUnauthorized :
//Bad credentials
break;
case kOCErrorServerForbidden:
//Forbidden
break;
case kOCErrorProxyAuth:
//Proxy access required
break;
case kOCErrorServerPathNotFound:
//Path not found
break;
default:
//Default
break;
}
}];
// Observe fractionCompleted using KVO
[progress addObserver:self forKeyPath:@"fractionCompleted" options:NSKeyValueObservingOptionNew context:NULL];
//Method to catch the progress notifications with callbacks
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
if ([keyPath isEqualToString:@"fractionCompleted"] && [object isKindOfClass:[NSProgress class]]) {
NSProgress *progress = (NSProgress *)object;
float percent = roundf (progress.fractionCompleted * 100);
//We make it on the main thread because we came from a delegate
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"Progress is %f", percent);
});
}
}
Set callback when background task finish
-----------------------------------------
Method to set callbacks of the pending transfers when the app starts. It's used when there are pendings background transfers. The block is executed when a pending background task finished.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[AppDelegate sharedOCCommunication] setTaskDidCompleteBlock:^(NSURLSession *session, NSURLSessionTask *task, NSError *error) {
}];
Set progress callback with pending background tasks
---------------------------------------------------
Method to set progress callbacks of the pending transfers. It's used when there are pendings background transfers. The block is executed when a pending task get a input porgress.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[AppDelegate sharedOCCommunication] setTaskDidSendBodyDataBlock:^(NSURLSession *session, NSURLSessionTask *task, int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend) {
}];
Check if the server supports Sharing api
----------------------------------------
The Sharing API is included in ownCloud 5.0.13 and greater versions. The info
needed is activeUser.url, the server URL that you want to check.
Code Example
~~~~~~~~~~~~
.. code-block:: objective-c
[[ AppDelegate sharedOCCommunication ] hasServerShareSupport :_activeUser.url onCommunication :[ AppDelegate sharedOCCommunication ]
successRequest :^( NSHTTPURLResponse *response, BOOL hasSupport, NSString *redirectedServer) {
}
failureRequest :^( NSHTTPURLResponse *response, NSError *error){
}
}];
Read shared all items by link
-----------------------------
Get information about what files and folder are shared by link.
The info needed is Path, the server URL that you want to check.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[ AppDelegate sharedOCCommunication ] readSharedByServer :path onCommunication :[ AppDelegate sharedOCCommunication ]
successRequest :^( NSHTTPURLResponse *response, NSArray *items, NSString *redirectedServer) {
NSLog ( @"Item: %d" , items);
}
failureRequest :^( NSHTTPURLResponse *response, NSError *error){
NSLog ( @"error: %@" , error);
NSLog ( @"Operation error: %d" , response.statusCode);
}];
Read shared items by link of a path
------------------------------------
Get information about what files and folder are shared by link in a specific path.
The info needed is the server URL that you want to check and the specific path tha you want to check.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[AppDelegate sharedOCCommunication] readSharedByServer:serverPath andPath:path onCommunication:[AppDelegate sharedOCCommunication] successRequest:^(NSHTTPURLResponse *response, NSArray *items, NSString *redirectedServer) {
NSLog ( @"Item: %d" , items);
} failureRequest:^(NSHTTPURLResponse *response, NSError *error) {
NSLog ( @"error: %@" , error);
NSLog ( @"Operation error: %d" , response.statusCode);
}];
Share link of file or folder
----------------------------
Share a file or a folder from your cloud server by link.
The info needed is Path, your server URL and the path of the item that you want
to share (for example ``/folder/file.pdf``)
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[ AppDelegate sharedOCCommunication ] shareFileOrFolderByServer :path andFileOrFolderPath :itemPath onCommunication :[ AppDelegate sharedOCCommunication ]
successRequest :^( NSHTTPURLResponse *response, NSString *token, NSString *redirectedServer) {
NSString *sharedLink = [ NSString stringWithFormat:@ `path/public.php?service=files&t=%@ <mailto:path/public.php?service=files&t=%25@>`_
, token];
}
failureRequest :^( NSHTTPURLResponse *response, NSError *error){
[ _delegate endLoading ];
DLog ( @error.code: %d , error. code);
DLog (@server.error: %d, response. statusCode);
int code = response. statusCode ;
if (error.code == kOCErrorServerPathNotFound) {
}
switch (code) {
case kOCErrorServerPathNotFound:
//File to share not exists
break;
case kOCErrorServerUnauthorized:
//Error login
break;
case kOCErrorServerForbidden:
//Permission error
break;
case kOCErrorServerTimeout:
//Not possible to connect to server
break;
default:
if (error.code == kOCErrorServerPathNotFound) {
//File to share not exists
} else {
//Not possible to connect to the server
}
break;
}
}];
}
NSLog ( @"error: %@" , error);
NSLog ( @"Operation error: %d" , response.statusCode);
}];
Unshare a folder or file by link
--------------------------------
Stop sharing by link a file or a folder from your cloud server.
The info needed is Path, your server URL and the Id of the item that you want
to Unshare.
Before unsharing an item, you have to read the shared items on the selected
server, using the method “ readSharedByServer ” so that you get the array
“items” with all the shared elements. These are objects OCShareDto, one of
their properties is idRemoteShared, parameter needed to unshared an element.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[ AppDelegate sharedOCCommunication ] unShareFileOrFolderByServer :path andIdRemoteSharedShared :sharedByLink. idRemoteShared onCommunication :[ AppDelegate sharedOCCommunication ]
successRequest :^( NSHTTPURLResponse *response, NSString *redirectedServer) {
//File unshared
}
failureRequest :^( NSHTTPURLResponse *response, NSError *error){
//Error
}
];
Check if file of folder is shared
----------------------------------
Check if a specific file or folder is shared in your cloud server.
Teh info need is Path, your server URL and the Id of the item that you want.
Before check an item, you have to read the shared items on the selected
server, using the method “ readSharedByServer ” so that you get the array
“items” with all the shared elements. These are objects OCShareDto, one of
their properties is idRemoteShared, parameter needed to unshared an element.
Code example
~~~~~~~~~~~~
.. code-block:: objective-c
[[AppDelegate sharedOCCommunication] isShareFileOrFolderByServer:path andIdRemoteShared:_shareDto.idRemoteShared onCommunication:[AppDelegate sharedOCCommunication] successRequest:^(NSHTTPURLResponse *response, NSString *redirectedServer, BOOL isShared) {
//File/Folder is shared
} failureRequest:^(NSHTTPURLResponse *response, NSError *error) {
//File/Folder is not shared
}];
Tips
----
* Credentials must be set before calling any method
* Paths must not be on URL Encoding
* Correct path: ``http://www.myowncloudserver.com/owncloud/remote.php/webdav/Pop_Music/``
* Wrong path: ``http://www.myowncloudserver.com/owncloud/remote.php/webdav/Pop%20Music/``
* There are some forbidden characters to be used in folder and files names on the server, same on the ownCloud iOS library "\", "/","<",">",":",""","","?","*"
* To move a folder the origin path and the destination path must end with “/”
* To move a file the origin path and the destination path must not end with “/”
* Upload and download actions may be cancelled thanks to the object “NSOperation”
* Unit tests, before launching unit tests you have to enter your account information (server url, user and password) on OCCommunicationLibTests.m

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===========================
iOS Application Development
===========================
This document will describe how to the use ownCloud iOS library. The ownCloud
iOS library for iOS allows a developer to communicate with any ownCloud server;
among the features included are file synchronization, upload and download of
files, delete rename and move of files and folders and share files or folders
by link among others.
This library may be added to a project and seamlessly integrates any
application with ownCloud.
The tool needed is Xcode 5, this guide includes some screenshots showing
examples in Xcode 5.
.. _iosindex:
.. toctree::
:maxdepth: 1
:hidden:
library_installation
examples

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@@ -0,0 +1,133 @@
Library Installation
====================
Obtaining the library
---------------------
The ownCloud iOS library may be obtained from the following Github repository:
`git@github.com:owncloud/ios-library.git
<mailto:git@github.com:owncloud/ios-library.git>`_
Once obtained, this code should be compiled with Xcode 5. The Github
repository not only contains the library, ownCloud iOS library, but also
contains a sample project, OCLibraryExample, which will assist in learning how
to use the library.
Add the library to a project
----------------------------
There are two methods to add this library to a project.
* Reference the headers and library binary file (``.a``) directly.
* Include the library as a subproject.
Which method to choose depends on user preference as well as whether the source
code and project file of the static library are available.
Reference headers and library binary files
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Follow these steps if this is the desired method.
1. Compile the ownCloud iOS library and run the project. A ``libownCloudiOS.a``
file will be generated.
The following files are required:
**Library file**
* ``libownCloudiOS.a`` (Library)
**Library Classes**
* ``OCCommunication.h`` (Accessors) Import in the communication class
* ``OCErrorMsg.h`` (Error Messages) Import in the communication class
* ``OCFileDto.h`` and ``OCFileDto.m`` (File/Folder object) Import when using
* ``readFolder`` and ``readFile`` methods
* ``OCFrameworkConstants.h`` (Customize constants)
2. Add the library file to the project. From the “Build Phases” tab, scroll
to “Link binary files” and select the + to add a library. Select the library
file.
|10000201000003480000020EC688993D_png|
3. Add the path of the library header files. Under the “Build Settings” tab,
select the target library and add the path in the “Header Search Paths” field.
|10000201000003430000020C65A3C5A7_png|
4. Remaining in the “Build Setting” tab, add the flag ``-Obj-C`` under the
“Other Linker Flags” option.
|100002010000034700000211B6BE4A2B_png|
At this stage, the library is included on your project and you can start
communicating with the ownCloud server.
Include the library as a subproject
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Follow these steps if this is the desired method.
5. Add the file ``ownCloud iOS library.xcodeproj`` to the project via drag and
drop.
|100000000000030C000001E61DFDBF76_png|
6. Within the project, navigate to the “Build Phases” tab. Under the “Target
Dependencies” section, select the + and choose the library target.
|100000000000030C000001E7A7A01884_png|
7. Link the library file to the project target. Under the “Build Phases” tab,
select the + under the “Link Binary with Libraries” section and select the
library file.
|100000000000030C000001E8AB4C3306_png|
8. Add the flag ``-Obj-C`` to “Other Linker Flags” under the project target on
the “Build Settings” tab.
|100000000000030C000001ECB85120C2_png|
9. Finally add the path of the library headers. Under the “Build Settings”
tab, add the path under the “Header Search Paths” option.
|100000000000030C000001E637605044_png|
Sources
-------
* `Creating a static library in iOS tutorial (raywenderlich.com)`_
* `Apple iOS static library documentation`_
.. |100000000000030C000001E61DFDBF76_png| image:: images/100000000000030C000001E61DFDBF76.png
:width: 16.51cm
:height: 10.285cm
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:width: 16.261cm
:height: 10.246cm
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:width: 16.51cm
:height: 12.023cm
.. |10000201000003480000020EC688993D_png| image:: images/10000201000003480000020EC688993D.png
:width: 16.51cm
:height: 10.329cm
.. |100000000000030C000001E8AB4C3306_png| image:: images/100000000000030C000001E8AB4C3306.png
:width: 14.605cm
:height: 9.137cm
.. |10000201000003430000020C65A3C5A7_png| image:: images/10000201000003430000020C65A3C5A7.png
:width: 16.51cm
:height: 10.358cm
.. |100000000000030C000001E637605044_png| image:: images/100000000000030C000001E637605044.png
:width: 14.605cm
:height: 9.098cm
.. |100000000000030C000001ECB85120C2_png| image:: images/100000000000030C000001ECB85120C2.png
:width: 14.605cm
:height: 9.211cm
.. _`Creating a static library in iOS tutorial (raywenderlich.com)`: http://www.raywenderlich.com/41377/creating-a-static-library-in-ios-tutorial
.. _`Apple iOS static library documentation`: https://developer.apple.com/library/ios/technotes/iOSStaticLibraries/Articles/configuration.html#/apple_ref/doc/uid/TP40012554-CH3-SW2