如何将图像上传到mysql数据库的iOS应用程序
我是iOS开发新手，目前正在为uni中的主要项目创build一个应用程序。 我正在创build一个注册页面，要求用户填写他们的详细信息，并上传图片。 到目前为止，我已经有了值到数据库，但我不知道如何也添加图像select器已经选定的图像。 任何人都可以帮忙吗？ 该代码张贴在下面….
RegistrationViewController.h
#import <UIKit/UIKit.h> #define kpostURL @"http://myurl.com/myphp.php" #define kfname @"fname" #define ksname @"sname" #define kemail @"email" #define kusername @"username" #define kpassword @"password" #define kinstrument @"instrument" #define klocation @"location" @interface registrationViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate> { UIScrollView *scrollView_; BOOL keyboardVisible_; IBOutlet UITextField *fnameText; IBOutlet UITextField *snameText; IBOutlet UITextField *emailText; IBOutlet UITextField *usernameText; IBOutlet UITextField *passwordText; IBOutlet UITextField *instrumentText; IBOutlet UITextField *locationText; IBOutlet UIImageView *ImageView; IBOutlet UIButton *button; NSURLConnection *postConnection; } @property (nonatomic, retain) UIImagePickerController *imagePicker; @property (nonatomic, strong) IBOutlet UIScrollView *scrollView; - (IBAction) pickImage:(id)sender; - (IBAction) textFieldDoneEditing: (id) sender; -(IBAction)post:(id)sender; -(void) postMessage:(NSString*) location withName:(NSString *) fname withSurname:(NSString *) sname withEmail:(NSString *) email withUsername:(NSString *) username withPassword:(NSString *) password withInstrument:(NSString *) instrument; - (void) keyboardDidShow:(NSNotification *)notif; - (void) keyboardDidHide:(NSNotification *)notif; @end RegistrationViewController.m
#import "registrationViewController.h" #import <QuartzCore/QuartzCore.h> @implementation registrationViewController @synthesize imagePicker; @synthesize scrollView=scrollView_; - (IBAction)textFieldDoneEditing:(id)sender { [sender resignFirstResponder]; } - (IBAction)pickImage:(id)sender { imagePicker = [[UIImagePickerController alloc] init]; imagePicker.delegate = self; imagePicker.allowsEditing = YES; imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; [self presentModalViewController:imagePicker animated:YES]; } - (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo{ ImageView.image = image; [imagePicker dismissModalViewControllerAnimated:YES]; } - (void) imagePickerControllerDidCancel:(UIImagePickerController *)picker { [imagePicker dismissModalViewControllerAnimated:YES]; } #pragma mark - View lifecycle - (void)viewDidLoad { [super viewDidLoad]; } -(void) postMessage:(NSString*) location withName:(NSString *) fname withSurname:(NSString *) sname withEmail:(NSString *) email withUsername:(NSString *) username withPassword:(NSString *) password withInstrument:(NSString *) instrument{ if (fname != nil && location != nil && sname !=nil && email !=nil && username !=nil && password !=nil && instrument !=nil){ NSMutableString *postString = [NSMutableString stringWithString:kpostURL]; [postString appendString:[NSString stringWithFormat:@"?%@=%@", kfname, fname]]; [postString appendString:[NSString stringWithFormat:@"&%@=%@", ksname, sname]]; [postString appendString:[NSString stringWithFormat:@"&%@=%@", kemail, email]]; [postString appendString:[NSString stringWithFormat:@"&%@=%@", kusername, username]]; [postString appendString:[NSString stringWithFormat:@"&%@=%@", kpassword, password]]; [postString appendString:[NSString stringWithFormat:@"&%@=%@", kinstrument, instrument]]; [postString appendString:[NSString stringWithFormat:@"&%@=%@", klocation, location]]; [postString setString:[postString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:postString]]; [request setHTTPMethod:@"POST"]; postConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES]; } } -(IBAction)post:(id)sender{ [self postMessage:locationText.text withName:fnameText.text withSurname:snameText.text withEmail:emailText.text withUsername:usernameText.text withPassword:passwordText.text withInstrument:instrumentText.text]; [locationText resignFirstResponder]; fnameText.text = nil; snameText.text = nil; emailText.text = nil; usernameText.text = nil; passwordText.text = nil; instrumentText.text = nil; locationText.text = nil; [[NSNotificationCenter defaultCenter] postNotificationName:@"Test1" object:self]; } - (void)viewDidUnload { // Release any retained subviews of the main view. // eg self.myOutlet = nil; } - (void)viewWillAppear:(BOOL)animated { NSLog(@"%@", @"Registering for keyboard events..."); [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidHide:) name:UIKeyboardDidHideNotification object:nil]; keyboardVisible_ = NO; [super viewWillAppear:animated]; } - (void)viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; } - (void)viewWillDisappear:(BOOL)animated { NSLog(@"%@", @"Unregistering for keyboard events..."); [[NSNotificationCenter defaultCenter] removeObserver:self]; [super viewWillDisappear:animated]; } - (void)viewDidDisappear:(BOOL)animated { [super viewDidDisappear:animated]; } - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); } #pragma mark - #pragma mark Keyboard handlers - (void) keyboardDidShow:(NSNotification *)notif { NSLog(@"%@", @"Received UIKeyboardDidShowNotification"); if (keyboardVisible_) { NSLog(@"%@", @"Keyboard is already visible. Ignoring notifications."); return; } // The keyboard wasn't visible before NSLog(@"Resizing smaller for keyboard"); // Get the origin of the keyboard when it finishes animating NSDictionary *info = [notif userInfo]; NSValue *aValue = [info objectForKey:UIKeyboardFrameEndUserInfoKey]; // Get the top of the keyboard in view's coordinate system. // We need to set the bottom of the scrollview to line up with it CGRect keyboardRect = [aValue CGRectValue]; keyboardRect = [self.view convertRect:keyboardRect fromView:nil]; CGFloat keyboardTop = keyboardRect.origin.y; // Resize the scroll view to make room for the keyboard CGRect viewFrame = self.view.bounds; viewFrame.size.height = keyboardTop - self.view.bounds.origin.y; self.scrollView.frame = viewFrame; keyboardVisible_ = YES; } - (void) keyboardDidHide:(NSNotification *)notif { NSLog(@"%@", @"Received UIKeyboardDidHideNotification"); if (!keyboardVisible_) { NSLog(@"%@", @"Keyboard already hidden. Ignoring notification."); return; } // The keyboard was visible NSLog(@"%@", @"Resizing bigger with no keyboard"); // Resize the scroll view back to the full size of our view self.scrollView.frame = self.view.bounds; keyboardVisible_ = NO; } @end
提前致谢 ：）
这里是我在NSMutableURLRequest上创build的一个类：
@interface NSMutableURLRequest (SendFormData) -(void)sendFormData:(NSDictionary *)data; @end @implementation NSMutableURLRequest (SendFormData) -(void)sendFormData:(NSDictionary *)data{ // add boundary NSMutableString *boundary = [NSMutableString stringWithString:@"----Boundary+"]; // append 5 random chars to the end of the boundary for(int i = 0; i < 5; i++){ BOOL lowercase = arc4random() % 2; if(lowercase){ [boundary appendFormat:@"%c", (arc4random() % 26) + 97]; } else{ [boundary appendFormat:@"%c", (arc4random() % 26) + 65]; } } // create body data NSMutableData *body = [[NSMutableData alloc] init]; self.HTTPMethod = @"POST"; [self setValue:[NSString stringWithFormat:@"multipart/form-data, boundary=%@", boundary] forHTTPHeaderField:@"Content-Type"]; for(NSString *currentKey in [data allKeys]){ id currentObject = [data objectForKey:currentKey]; if([currentObject class] == [UIImage class]){ [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"myphoto.png\"\r\n", currentKey] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[@"Content-Type: image/x-png\r\n" dataUsingEncoding:NSASCIIStringEncoding]]; [body appendData:[@"Content-Transfer-Encoding: binary\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:UIImagePNGRepresentation(currentObject)]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; } else{ [body appendData:[[NSString stringWithFormat:@"--%@\r\nContent-Disposition: form-data; name=\"%@\"\r\n\r\n%@\r\n", boundary, currentKey, currentObject] dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:NO]]; } } self.HTTPBody = body; } @end
只要传递给你的参数和参数的对象的NSDictionary，它会创build你的请求，然后可以传递给NSURLConnection。
或者您可以select查看ASIFormDataRequest（https://github.com/pokeb/asi-http-request/tree）。