相机选择照片及拍照后使用AFNetworking图片上传（支持一张及多张上传）

弹出照片获取方式- (IBAction)changeTheImage:(UIButton *)sender {    selectedButton = sender;    UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"相册",@"相机", nil];    [sheet showInView:self.view];}- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {    if (buttonIndex != actionSheet.cancelButtonIndex) {        if (buttonIndex == 0) {            //相册            [self goAlbum];        } else if (buttonIndex == 1) {            //相机            [self takePhoto];        }    }}//开始拍照-(void)takePhoto{    UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;    if ([UIImagePickerController isSourceTypeAvailable: sourceType]) {        UIImagePickerController *picker = [[UIImagePickerController alloc] init];        picker.delegate = self;        picker.sourceType = sourceType;        picker.modalTransitionStyle=UIModalTransitionStyleCoverVertical;        picker.videoQuality = UIImagePickerControllerQualityTypeMedium;        [self presentViewController:picker animated:YES completion:^{                    }];    }}//相册选择- (void)goAlbum {    if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypePhotoLibrary]) {        UIImagePickerController *picker = [[UIImagePickerController alloc] init];        picker.delegate = self;        picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;        picker.modalTransitionStyle=UIModalTransitionStyleCoverVertical;        picker.videoQuality = UIImagePickerControllerQualityTypeMedium;        [self presentViewController:picker animated:YES completion:^{                    }];    }}- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info {    //当选择的类型是图片    //先把图片转成NSData    UIImage* image = [info objectForKey:UIImagePickerControllerOriginalImage];    //关闭相册界面    __weak __typeof(self)weakSelf = self;    [picker dismissViewControllerAnimated:YES completion:^{        dispatch_async(dispatch_get_main_queue(), ^{            NSMutableDictionary *dict = [NSMutableDictionary dictionary];            [dict setObject:image forKey:@"image"];            if (selectedButton == weakSelf.cardFrontButton) {                [dict setObject:@"card_img" forKey:@"type"];                if (images.count < 1) {                    [images addObject:dict];                } else {                    [images replaceObjectAtIndex:0 withObject:dict];                }                [weakSelf.cardFrontButton setBackgroundImage:image forState:UIControlStateNormal];                [weakSelf.cardFrontButton.currentBackgroundImage setAccessibilityIdentifier:@"imagePicked"];            } else if (selectedButton == weakSelf.co_Button) {                                [dict setObject:@"witness_one_img" forKey:@"type"];                if (images.count < 2) {                    [images addObject:dict];                } else {                    [images replaceObjectAtIndex:1 withObject:dict];                }                [weakSelf.co_Button setBackgroundImage:image forState:UIControlStateNormal];                [weakSelf.co_Button.currentBackgroundImage setAccessibilityIdentifier:@"imagePicked"];            }        });    }];}//上传照片 单张上传，将for循环去掉，获取到自己的需要上传的照片即可        多张上传的时候，利用for 循环，将照片一次性以form表单的形式提交到后台- (void)imageUpload {    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];    NSDictionary *parameters = @{@"loginName": self.scaningDict[@"username"],@"phone_num" : self.scaningDict[@"phoneNum"], @"session_id" :  self.scaningDict[@"sessionId"]};    [manager POST:[NSString stringWithFormat:@"%@%@",SERVER_ADDRESS,URL_PHOTO_MENHU] parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {        for (int i = 0; i < images.count; i ++) {            NSMutableDictionary *dict = images[i];            NSData *data=UIImageJPEGRepresentation(dict[@"image"], .5);            [formData appendPartWithFileData:data name:dict[@"type"] fileName:@"" mimeType:@""];        }    } success:^(AFHTTPRequestOperation *operation, id responseObject) {        id code=[responseObject objectForKey:@"code"];        if ([code intValue] == 200) {            dispatch_async(dispatch_get_main_queue(), ^{                HideIndicator_InView(self.view);                ShowTips(@"上传成功，请到门户查看");                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{                    [self.navigationController popToRootViewControllerAnimated:YES];                });            });        } else {            dispatch_async(dispatch_get_main_queue(), ^{                HideIndicator_InView(self.view);                ShowTips(@"上传失败，请重新上传");                return ;            });        }            } failure:^(AFHTTPRequestOperation *operation, NSError *error) {        dispatch_async(dispatch_get_main_queue(), ^{            HideIndicator_InView(self.view);            ShowTips(@"上传失败，请重新上传");            return ;        });    }];}