我遇到了一个问题，我想制作一个在 Google Drive 中存储数据的应用程序。我已经生成了客户端 ID 和客户端密钥。现在你无法找到谷歌驱动器的内置库。
还有把GTL.xcodeproj拖到哪里，GTLDrive.h和GTLDrive_Sources.m是什么。
如何使用这个以及在哪里得到这个？？？？
这是我将使用的代码：
#import <UIKit/UIKit.h>
#import <MobileCoreServices/MobileCoreServices.h>
#import "GTMOAuth2ViewControllerTouch.h"
#import "GTLDrive.h"
@interface ViewController : UIViewController <UINavigationControllerDelegate, UIImagePickerControllerDelegate>
@property (nonatomic, retain) GTLServiceDrive *driveService;
@end
#import "ViewController.h"
static NSString *const kKeychainItemName = @"Google Drive Quickstart";
static NSString *const kClientID = @"YOUR_CLIENT_ID";
static NSString *const kClientSecret = @"YOUR_CLIENT_SECRET";
@implementation ViewController
@synthesize driveService;
- (void)viewDidLoad
{
[super viewDidLoad];
// Initialize the drive service & load existing credentials from the keychain if available
self.driveService = [[GTLServiceDrive alloc] init];
self.driveService.authorizer = [GTMOAuth2ViewControllerTouch authForGoogleFromKeychainForName:kKeychainItemName
clientID:kClientID
clientSecret:kClientSecret];
}
- (void)viewDidAppear:(BOOL)animated
{
// Always display the camera UI.
[self showCamera];
}
- (void)showCamera
{
UIImagePickerController *cameraUI = [[UIImagePickerController alloc] init];
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
cameraUI.sourceType = UIImagePickerControllerSourceTypeCamera;
}
else
{
// In case we're running the iPhone simulator, fall back on the photo library instead.
cameraUI.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad)
{
[self showAlert:@"Error" message:@"Sorry, iPad Simulator not supported!"];
return;
}
};
cameraUI.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeImage, nil];
cameraUI.allowsEditing = YES;
cameraUI.delegate = self;
[self presentModalViewController:cameraUI animated:YES];
if (![self isAuthorized])
{
// Not yet authorized, request authorization and push the login UI onto the navigation stack.
[cameraUI pushViewController:[self createAuthController] animated:YES];
}
}
// Handle selection of an image
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image = [info valueForKey:UIImagePickerControllerOriginalImage];
[self dismissModalViewControllerAnimated:YES];
[self uploadPhoto:image];}
// Handle cancel from image picker/camera.
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
[self dismissModalViewControllerAnimated:YES];}
// Helper to check if user is authorized
- (BOOL)isAuthorized{
return [((GTMOAuth2Authentication *)self.driveService.authorizer) canAuthorize];
}
// Handle completion of the authorization process, and updates the Drive service
// with the new credentials.
- (void)viewController:(GTMOAuth2ViewControllerTouch *)viewController
finishedWithAuth:(GTMOAuth2Authentication *)authResult
error:(NSError *)error
{
if (error != nil)
{
[self showAlert:@"Authentication Error" message:error.localizedDescription];
self.driveService.authorizer = nil;
}
else
{
self.driveService.authorizer = authResult;
}
}
// Uploads a photo to Google Drive
- (void)uploadPhoto:(UIImage*)image
{
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"'Quickstart Uploaded File ('EEEE MMMM d, YYYY h:mm a, zzz')"];
GTLDriveFile *file = [GTLDriveFile object];
file.title = [dateFormat stringFromDate:[NSDate date]];
file.descriptionProperty = @"Uploaded from the Google Drive iOS Quickstart";
file.mimeType = @"image/png";
NSData *data = UIImagePNGRepresentation((UIImage *)image);
GTLUploadParameters *uploadParameters = [GTLUploadParameters uploadParametersWithData:data MIMEType:file.mimeType];
GTLQueryDrive *query = [GTLQueryDrive queryForFilesInsertWithObject:file
uploadParameters:uploadParameters];
UIAlertView *waitIndicator = [self showWaitIndicator:@"Uploading to Google Drive"];
[self.driveService executeQuery:query
completionHandler:^(GTLServiceTicket *ticket,
GTLDriveFile *insertedFile, NSError *error) {
[waitIndicator dismissWithClickedButtonIndex:0 animated:YES];
if (error == nil)
{
NSLog(@"File ID: %@", insertedFile.identifier);
[self showAlert:@"Google Drive" message:@"File saved!"];
}
else
{
NSLog(@"An error occurred: %@", error);
[self showAlert:@"Google Drive" message:@"Sorry, an error occurred!"];
}
}];
}
// Helper for showing a wait indicator in a popup
- (UIAlertView*)showWaitIndicator:(NSString *)title
{
UIAlertView *progressAlert;
progressAlert = [[UIAlertView alloc] initWithTitle:title
message:@"Please wait..."
delegate:nil
cancelButtonTitle:nil
otherButtonTitles:nil];
[progressAlert show];
UIActivityIndicatorView *activityView;
activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
activityView.center = CGPointMake(progressAlert.bounds.size.width / 2,
progressAlert.bounds.size.height - 45);
[progressAlert addSubview:activityView];
[activityView startAnimating];
return progressAlert;
}
// Helper for showing an alert
- (void)showAlert:(NSString *)title message:(NSString *)message
{
UIAlertView *alert;
alert = [[UIAlertView alloc] initWithTitle: title
message: message
delegate: nil
cancelButtonTitle: @"OK"
otherButtonTitles: nil];
[alert show];
}
@end
我从这个链接得到这个代码：https ://developers.google.com/drive/quickstart-ios