GDCloudFileBrowser

GDCloudFileBrowser is an iOS drop-in wrapper class that can be used with existing or new projects to access a user's Dropbox or Google Drive content.

Requirements

TLDR: Include QuartzCore, CoreGraphics, SystemConfiguration and Security.framework

• GDCloudFileBrowser is tested only for iOS 7 or above and will work only with ARC projects.
• GDCloudFileBrowser uses UIKit, CoreGraphics.
• GDCloudFileBrowser uses the DropboxSDK Core SDK last updated on Sep-15th-2014 (v1.3.13) which requires QuartzCore, Security.framework
• GDCloudFileBrowser uses the GTL google-api-objectivec-client last updated on Dec-6th-2012 which uses Security, SystemConfiguration.
• Run pod install to install Google Drive project

Adding GDCloudFileBrowser to your project

Download the Source project and drag and drop the contents of Core folder into your project. Run pod install from your projects root folder.

Your View Controller must conform to the GDFilePickerDelegate protocol to receive callbacks.

If you would like to see detailed logs, enable it in the GDLog.h file. Set ENABLE_LOG flag to YES

Update constants in KeysHelper.m with your developer account info

If you're using Dropbox update your app's Supported URL Schemes in your Info.plist file. Info.plist > URL Types > URL Schemes [db-APP_KEY replacing APP_KEY with the key generated when you created your app]

static NSString *const kDropboxClientId = @""; // Set the client Id from your Dropbox developer console and update the Info.plist (see above for instructions)
static NSString *const kDropboxClientSecret = @""; // Set the client Secret from your Dropbox developer console
static NSString *const kGoogleDriveClientId = @""; // Set the client Id from your Google developer console
static NSString *const kGoogleDriveClientSecret = @""; // Set the client Secret from your Google developer console
static NSString *const kGoogleDriveClientKeychainName = @""; // Set a name for the keychain entry

Using GDDropboxHelper to download Dropbox files

GDDropboxHelper *dropboxHelper = [[GDDropboxHelper alloc] initWithDelegate:self];

Linking to the controller if the user's account is not linked

if (![self.dropboxHelper dropboxAccountLinked]) { // no accounts are currently linked.
    [[DBSession sharedSession] linkFromController:self];
} 

Downloading the files

@property (nonatomic, copy) NSString *dropboxPath; // use `@"\"` to indicate root folder

    [self.dropboxHelper downloadFilesFrom:self.dropboxPath completion:^(BOOL success, NSError *error) {
        /* custom logic upon downloading the files */
    }];

Using GDGoogleDriveHelper to download Google Drive files

If it's the root folder (Read comments in GDFilePickerViewController to find why it's done this way)

@property (nonatomic, strong) GDGoogleDriveHelper *googleDriveHelper;

self.googleDriveHelper = [GDGoogleDriveHelper sharedManager];
self.googleDriveHelper.delegate = self;

If it's not the root folder

@property (nonatomic, strong) GDGoogleDriveHelper *googleDriveHelper;

self.googleDriveHelper = [[GDGoogleDriveHelper alloc] init];
self.googleDriveHelper.delegate = self;

Linking to the controller if the user's account is not linked

if (![self.googleDriveHelper driveAccessAuthorized]) {
    [self.navigationController pushViewController:[self.googleDriveHelper authController] animated:YES];
}

Downloading the files

@property (nonatomic, copy) NSString *gDrivePath; //  use `@"root"` to indicate root folder
    [self.googleDriveHelper downloadFilesFrom:self.gDrivePath completion:^(BOOL success, NSError *error) {
        /* custom logic upon downloading the files */
    }];

Using GDQuickPreviewDelegate to retrieve user's picked file data

Dropbox file selection

- (void)userSelectedDropboxFileWithURL:(NSString *)url data:(NSData *)fileData relativePath:(NSString *)relativePath name:(NSString *)fileName {
    /* custom logic to handle user's file selection */
}

Google Drive file selection

- (void)userSelectedGoogleDriveFileWithURL:(NSString *)url data:(NSData *)fileData name:(NSString *)fileName {
    /* custom logic to handle user's file selection */

License

This code is distributed under the terms and conditions of the MIT license.