我們在寫程式碼的時候經常會將頭像進行上傳伺服器，上傳頭像圖片我試過兩種方式

一種方式就是使用base64字串上傳圖片，這種形式我個人認為比較適合上傳圖片數量比較少的，比如上傳頭像，上傳圖片數量多的話，速度會慢些

另一種方式是使用二進位制流進行上傳圖片，這種方式上傳圖片少或者數量多都沒關係，速度也很快

選擇頭像效果：

程式如下：

ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (weak, nonatomic) IBOutletUIImageView

*headIcon;

- (IBAction)changeIconAction:(UITapGestureRecognizer *)sender;

@end

ViewController.m

#import "ViewController.h"

#import "AFHTTPRequestOperationManager.h"

@interface ViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate,UIActionSheetDelegate>

{

   UIImagePickerController

*pickerController;

AFHTTPRequestOperationManager *manager;

}

@end

@implementation ViewController

- (void)viewDidLoad {

    [superviewDidLoad];

//初始化頭像控制元件

    [selfinitHeadIcon];

//初始化pickController

    [selfcreateData];

}

- (void)initHeadIcon

{

self.view.backgroundColor = [UIColorlightGrayColor

];

self.headIcon.layer.cornerRadius = self.headIcon.frame.size.height/2;

self.headIcon.clipsToBounds =YES;

self.headIcon.layer.borderColor = [UIColorwhiteColor].CGColor;

self.headIcon.layer.borderWidth = 3;

}

- (void)createData

{

//初始化pickerController

pickerController = [[UIImagePickerControlleralloc]init];

pickerController.view.backgroundColor = [UIColororangeColor];

pickerController.delegate =self;

pickerController.allowsEditing =YES;

}

- (IBAction)changeIconAction:(UITapGestureRecognizer *)sender {

UIActionSheet *actionSheet = [[UIActionSheetalloc]initWithTitle:@"選擇頭像"delegate:selfcancelButtonTitle:@"取消"destructiveButtonTitle:nilotherButtonTitles:@"拍照",@"相簿",@"相簿",nil];

    [actionSheet showInView:[UIApplicationsharedApplication].keyWindow];

}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

{

   if (buttonIndex ==0) {//相機

if([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])

        {

           NSLog(@"支援相機");

            [selfmakePhoto];

        }else{

UIAlertView *alert = [[UIAlertViewalloc]initWithTitle:@"提示"message:@"請在設定-->隱私-->相機，中開啟本應用的相機訪問許可權！！"delegate:selfcancelButtonTitle:@"取消"otherButtonTitles:@"我知道了",nil];

            [alertshow];

        }

    }elseif (buttonIndex ==1){//相片

if([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])

        {

           NSLog(@"支援相簿");

            [selfchoosePicture];

        }else{

UIAlertView *alert = [[UIAlertViewalloc]initWithTitle:@"提示"message:@"請在設定-->隱私-->照片，中開啟本應用的相機訪問許可權！！"delegate:selfcancelButtonTitle:@"取消"otherButtonTitles:@"我知道了",nil];

            [alertshow];

        }

    }elseif (buttonIndex ==2){//圖冊

if ([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum])

        {

           NSLog(@"支援相簿");

            [selfpictureLibrary];

//            [self presentViewController:picker animated:YES completion:nil];

        }else{

UIAlertView *alert = [[UIAlertViewalloc]initWithTitle:@"提示"message:@"請在設定-->隱私-->照片，中開啟本應用的相機訪問許可權！！"delegate:selfcancelButtonTitle:@"取消"otherButtonTitles:@"我知道了",nil];

            [alertshow];

        }

    }elseif (buttonIndex ==3){

    }

}

//跳轉到imagePicker裡

- (void)makePhoto

{

pickerController.sourceType =UIImagePickerControllerSourceTypeCamera;

    [selfpresentViewController:pickerControlleranimated:YEScompletion:nil];

}

//跳轉到相簿

- (void)choosePicture

{

pickerController.sourceType =UIImagePickerControllerSourceTypeSavedPhotosAlbum;

    [selfpresentViewController:pickerControlleranimated:YEScompletion:nil];

}

//跳轉相簿

- (void)pictureLibrary

{

pickerController.sourceType =UIImagePickerControllerSourceTypePhotoLibrary;

    [selfpresentViewController:pickerControlleranimated:YEScompletion:nil];

}

//使用者取消退出picker時候呼叫

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

{

   NSLog(@"%@",picker);

    [pickerControllerdismissViewControllerAnimated:YEScompletion:^{

    }];

}

//使用者選中圖片之後的回撥

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

   NSLog(@"%s,info == %@",__func__,info);

UIImage *userImage = [selffixOrientation:[infoobjectForKey:@"UIImagePickerControllerOriginalImage"]];

    userImage = [selfscaleImage:userImagetoScale:0.3];

//儲存圖片

//    [self saveImage:userImage name:@"某個特定標示"];

    [pickerControllerdismissViewControllerAnimated:YEScompletion:^{

    }];

    [self.headIconsetImage:userImage];

self.headIcon.contentMode = UIViewContentModeScaleAspectFill;

self.headIcon.clipsToBounds =YES;

//照片上傳

    [selfupDateHeadIcon:userImage];

}

- (void)upDateHeadIcon:(UIImage *)photo

{

//兩種方式上傳頭像

/*方式一：使用NSData資料流傳圖片*/

   NSString *imageURl =@"";

manager.responseSerializer = [AFHTTPResponseSerializerserializer];

manager.responseSerializer.acceptableContentTypes =[NSSetsetWithObject:@"text/html"];

    [managerPOST:imageURlparameters:nilconstructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

        [formData appendPartWithFileData:UIImageJPEGRepresentation(photo,1.0)name:@"text"fileName:@"test.jpg"mimeType:@"image/jpg"];

    }success:^(AFHTTPRequestOperation *operation,id responseObject) {

    }failure:^(AFHTTPRequestOperation *operation,NSError *error) {

    }];

/*方式二：使用Base64字串傳圖片*/

NSData *data =UIImageJPEGRepresentation(photo,1.0);

   NSString *pictureDataString=[database64Encoding];

NSDictionary * dic  =@{@"verbId":@"modifyUserInfo",@"deviceType":@"ios",@"userId":@"",@"photo":pictureDataString,@"mobileTel":@""};

    [managerPOST:@""parameters:dic success:^(AFHTTPRequestOperation *operation,id responseObject) {

       if ([[responseObjectobjectForKey:@"flag"]intValue] == 0) {

        }else{

        }

    }

         failure:^(AFHTTPRequestOperation *operation,NSError *error) {

          }];

}

//儲存照片到沙盒路徑(儲存)

- (void)saveImage:(UIImage *)image name:(NSString *)iconName

{

NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);

//寫入檔案

   NSString *icomImage = iconName;

NSString *filePath = [[pathsobjectAtIndex:0]stringByAppendingPathComponent:[NSStringstringWithFormat:@"%@.png", icomImage]];

// 儲存檔案的名稱

//    [[self getDataByImage:image] writeToFile:filePath atomically:YES];

    [UIImagePNGRepresentation(image)writeToFile: filePath atomically:YES];

}

//縮放圖片

- (UIImage *)scaleImage:(UIImage *)image toScale:(float)scaleSize

{

   UIGraphicsBeginImageContext(CGSizeMake(image.size.width*scaleSize,image.size.height*scaleSize));

    [imagedrawInRect:CGRectMake(0,0, image.size.width * scaleSize, image.size.height *scaleSize)];

UIImage *scaledImage =UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

NSLog(@"%@",NSStringFromCGSize(scaledImage.size));

   return scaledImage;

}

//修正照片方向(手機轉90度方向拍照)

- (UIImage *)fixOrientation:(UIImage *)aImage {

// No-op if the orientation is already correct

if (aImage.imageOrientation ==UIImageOrientationUp)

       return aImage;

CGAffineTransform transform =CGAffineTransformIdentity;

   switch (aImage.imageOrientation) {

caseUIImageOrientationDown:

caseUIImageOrientationDownMirrored:

            transform =CGAffineTransformTranslate(transform, aImage.size.width, aImage.size.height);

            transform =CGAffineTransformRotate(transform,M_PI);

           break;

caseUIImageOrientationLeft:

caseUIImageOrientationLeftMirrored:

            transform =CGAffineTransformTranslate(transform, aImage.size.width,0);

            transform =CGAffineTransformRotate(transform,M_PI_2);

           break;

caseUIImageOrientationRight:

caseUIImageOrientationRightMirrored:

            transform =CGAffineTransformTranslate(transform,0, aImage.size.height);

            transform =CGAffineTransformRotate(transform, -M_PI_2);

           break;

       default:

           break;

    }

   switch (aImage.imageOrientation) {

caseUIImageOrientationUpMirrored:

caseUIImageOrientationDownMirrored:

            transform =CGAffineTransformTranslate(transform, aImage.size.width,0);

            transform =CGAffineTransformScale(transform, -1,1);

           break;

caseUIImageOrientationLeftMirrored:

caseUIImageOrientationRightMirrored:

            transform =CGAffineTransformTranslate(transform, aImage.size.height,0);

            transform =CGAffineTransformScale(transform, -1,1);

           break;

       default:

           break;

    }

// Now we draw the underlying CGImage into a new context, applying the transform

// calculated above.

   CGContextRef ctx =CGBitmapContextCreate(NULL, aImage.size.width, aImage.size.height,

                                            CGImageGetBitsPerComponent(aImage.CGImage),0,

                                            CGImageGetColorSpace(aImage.CGImage),

                                            CGImageGetBitmapInfo(aImage.CGImage));

   CGContextConcatCTM(ctx, transform);

   switch (aImage.imageOrientation) {

caseUIImageOrientationLeft:

caseUIImageOrientationLeftMirrored:

caseUIImageOrientationRight:

caseUIImageOrientationRightMirrored:

           CGContextDrawImage(ctx,CGRectMake(0,0,aImage.size.height,aImage.size.width), aImage.CGImage);

           break;

       default:

           CGContextDrawImage(ctx,CGRectMake(0,0,aImage.size.width,aImage.size.height), aImage.CGImage);

           break;

    }

CGImageRef cgimg =CGBitmapContextCreateImage(ctx);

   UIImage *img = [UIImageimageWithCGImage:cgimg];

CGContextRelease(ctx);

CGImageRelease(cgimg);

   return img;

}