ios利用 AFN 上傳相冊或者拍照圖片

更新時間：2017年06月22日 15:24:15 作者：smile麗語

這篇文章主要介紹了ios利用 AFN 上傳相冊或者拍照圖片的相關資料,非常具有實用價值，需要的朋友可以參考下

由于項目中多處需要上傳圖片，我們可以自定義上傳圖片請求，自定義調(diào)取相冊及拍照，方便多處使用時調(diào)用。

主要步驟：

1.第一步：請求上傳你選取的相冊圖片或者拍照圖片（經(jīng)過壓縮處理）

2.第二步：獲取到第一步圖片url上傳給服務器

3.第三步：回顯圖片（當然進入該界面時先判斷是否有圖片，無圖則展示占位圖片，否則就回顯圖片）

廢話不多說，直接上代碼：

1）封裝的上傳圖片的網(wǎng)絡請求(圖片壓縮) QTXUploadImage 文件

// 利用 afn 上傳一張圖片
#import <Foundation/Foundation.h>

@interface QTXUploadImage : NSObject

// 上傳圖片的網(wǎng)絡請求(圖片壓縮)
+ (void)post:(NSString *)url image:(UIImage *)image name:(NSString *)name success:(void (^)(id json))success failure:(void (^)(NSError *error))failure;

@end

#import "QTXUploadImage.h"
#import "AFNetworking.h"
#import "QTXAccount.h"
#import "QTXAccountTool.h"

@implementation QTXUploadImage

/**
 * 上傳圖片的網(wǎng)絡請求(圖片壓縮)
 *
 * @param url       上傳圖片的網(wǎng)絡請求地址
 * @param name       和后臺包名一致
 *
 */
+ (void)post:(NSString *)url image:(UIImage *)image name:(NSString *)name success:(void (^)(id json))success failure:(void (^)(NSError *error))failure {

  // 1.創(chuàng)建網(wǎng)絡管理者
  AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

  // 2.拼接請求參數(shù)url 也可在具體控制器請求里傳入
  NSDictionary *dict = @{@"userId" : [QTXAccountTool account].userId};

  // 3.發(fā)送請求
  [manager POST:url parameters:dict constructingBodyWithBlock:
   ^void(id<AFMultipartFormData> formData) {

     NSData *imageData = UIImageJPEGRepresentation(image, 0.5);//進行圖片壓縮

     // 使用日期生成圖片名稱
     NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
     formatter.dateFormat = @"yyyyMMddHHmmss";
     NSString *fileName = [NSString stringWithFormat:@"%@.png",[formatter stringFromDate:[NSDate date]]];
     // 任意的二進制數(shù)據(jù)MIMEType application/octet-stream
     [formData appendPartWithFileData:imageData name:name fileName:fileName mimeType:@"image/png"];

   } success:^void(NSURLSessionDataTask * task, id responseObject) {

     if (success) {
       success(responseObject);
     }

   } failure:^void(NSURLSessionDataTask * task, NSError * error) {

     if (failure) {
       failure(error);
     }
   }];
}
@end

2）封裝的拍照/從相冊選擇 QTXImagePicker 文件

// 拍照/從相冊選擇
#import <Foundation/Foundation.h>

typedef void(^QTXImagePickerFinishAction)(UIImage *image);

@interface QTXImagePicker : NSObject

/**
 @param viewController 用于present UIImagePickerController對象
 @param allowsEditing  是否允許用戶編輯圖像
 */
+ (void)showImagePickerFromViewController:(UIViewController *)viewController
              allowsEditing:(BOOL)allowsEditing
               finishAction:(QTXImagePickerFinishAction)finishAction;


@end

#import "QTXImagePicker.h"

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

@property (nonatomic, weak) UIViewController *viewController;
@property (nonatomic, copy) QTXImagePickerFinishAction finishAction;
@property (nonatomic, assign) BOOL allowsEditing;

@end

static QTXImagePicker *qtxImagePickerInstance = nil;

@implementation QTXImagePicker

+ (void)showImagePickerFromViewController:(UIViewController *)viewController allowsEditing:(BOOL)allowsEditing finishAction:(QTXImagePickerFinishAction)finishAction {
  if (qtxImagePickerInstance == nil) {
    qtxImagePickerInstance = [[QTXImagePicker alloc] init];
  }

  [qtxImagePickerInstance showImagePickerFromViewController:viewController
                        allowsEditing:allowsEditing
                        finishAction:finishAction];
}

- (void)showImagePickerFromViewController:(UIViewController *)viewController
              allowsEditing:(BOOL)allowsEditing
               finishAction:(QTXImagePickerFinishAction)finishAction {
  _viewController = viewController;
  _finishAction = finishAction;
  _allowsEditing = allowsEditing;

  UIActionSheet *sheet = nil;

  if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
    sheet = [[UIActionSheet alloc] initWithTitle:nil
                      delegate:self
                  cancelButtonTitle:@"取消"
               destructiveButtonTitle:nil
                  otherButtonTitles:@"拍照", @"從相冊選擇", nil];
  }else {
    sheet = [[UIActionSheet alloc] initWithTitle:nil
                      delegate:self
                  cancelButtonTitle:@"取消"
               destructiveButtonTitle:nil
                  otherButtonTitles:@"從相冊選擇", nil];
  }

  UIView *window = [UIApplication sharedApplication].keyWindow;
  [sheet showInView:window];
}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
  NSString *title = [actionSheet buttonTitleAtIndex:buttonIndex];
  if ([title isEqualToString:@"拍照"]) {
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.sourceType = UIImagePickerControllerSourceTypeCamera;
    picker.allowsEditing = _allowsEditing;
    [_viewController presentViewController:picker animated:YES completion:nil];

  }else if ([title isEqualToString:@"從相冊選擇"]) {
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
//    [picker.navigationBar setBarTintColor:QTXNavColor]; // 修改相冊的導航條的背景顏色
    picker.delegate = self;
    picker.allowsEditing = YES;
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    [_viewController presentViewController:picker animated:YES completion:nil];

  }else {
    qtxImagePickerInstance = nil;
  }
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
  UIImage *image = info[UIImagePickerControllerEditedImage];
  if (image == nil) {
    image = info[UIImagePickerControllerOriginalImage];
  }

  if (_finishAction) {
    _finishAction(image);
  }

  [picker dismissViewControllerAnimated:YES completion:^{}];

  qtxImagePickerInstance = nil;
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
  if (_finishAction) {
    _finishAction(nil);
  }

  [picker dismissViewControllerAnimated:YES completion:^{}];

  qtxImagePickerInstance = nil;
}

@end

當使用時，在所需使用的控制器里調(diào)用：

[QTXImagePicker showImagePickerFromViewController:self allowsEditing:YES finishAction:^(UIImage *image) {
      if (image) {

        self.idSideImage = image;
        [QTXUploadImage post:QTX_xsz1Url image:image name:@"xsz1" success:^(id json) {
          // 第一步請求上傳
          QTXLog(@"圖像上傳請求成功 %@", json);

          self.idSide = json[@"data"];

        } failure:^(NSError *error) {
          QTXLog(@"學生證圖像上傳請求失敗 %@", error);
        }];
      }
    }];

第二步和第三步需要和各位自己后臺server聯(lián)調(diào)，就屬于普通的get/post請求了，這邊就不放代碼了喲

插一下，我們產(chǎn)品沒讓拍照的照片存儲到相冊

// 存儲圖片名稱：001.png ~ 009.png

for (int i = 1; i<=9; i++) {
   UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"00%d.png", i]];

   UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);

   [NSThread sleepForTimeInterval:1];
  }

以上就是本文的全部內(nèi)容，希望對大家的學習有所幫助，也希望大家多多支持腳本之家。

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