ios利用 AFN 上传相册或者拍照图片

由于项目中多处需要上传图片，我们可以自定义上传图片请求，自定义调取相册及拍照，方便多处使用时调用。

主要步骤：

1.第一步：请求上传你选取的相册图片或者拍照图片（经过压缩处理）

2.第二步：获取到第一步图片url上传给服务器

3.第三步：回显图片（当然进入该界面时先判断是否有图片，无图则展示占位图片，否则就回显图片）

废话不多说，直接上代码：

1）封装的上传图片的网络请求(图片压缩) qtxuploadimage 文件

// 利用 afn 上传一张图片
#import <foundation/foundation.h>

@interface qtxuploadimage : nsobject

// 上传图片的网络请求(图片压缩)
+ (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

/**
 * 上传图片的网络请求(图片压缩)
 *
 * @param url       上传图片的网络请求地址
 * @param name       和后台包名一致
 *
 */
+ (void)post:(nsstring *)url image:(uiimage *)image name:(nsstring *)name success:(void (^)(id json))success failure:(void (^)(nserror *error))failure {

  // 1.创建网络管理者
  afhttpsessionmanager *manager = [afhttpsessionmanager manager];

  // 2.拼接请求参数url 也可在具体控制器请求里传入
  nsdictionary *dict = @{@"userid" : [qtxaccounttool account].userid};

  // 3.发送请求
  [manager post:url parameters:dict constructingbodywithblock:
   ^void(id<afmultipartformdata> formdata) {

     nsdata *imagedata = uiimagejpegrepresentation(image, 0.5);//进行图片压缩

     // 使用日期生成图片名称
     nsdateformatter *formatter = [[nsdateformatter alloc] init];
     formatter.dateformat = @"yyyymmddhhmmss";
     nsstring *filename = [nsstring stringwithformat:@"%@.png",[formatter stringfromdate:[nsdate date]]];
     // 任意的二进制数据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）封装的拍照/从相册选择 qtximagepicker 文件

// 拍照/从相册选择
#import <foundation/foundation.h>

typedef void(^qtximagepickerfinishaction)(uiimage *image);

@interface qtximagepicker : nsobject

/**
 @param viewcontroller 用于present uiimagepickercontroller对象
 @param allowsediting  是否允许用户编辑图像
 */
+ (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", @"从相册选择", nil];
  }else {
    sheet = [[uiactionsheet alloc] initwithtitle:nil
                      delegate:self
                  cancelbuttontitle:@"取消"
               destructivebuttontitle:nil
                  otherbuttontitles:@"从相册选择", 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:@"从相册选择"]) {
    uiimagepickercontroller *picker = [[uiimagepickercontroller alloc] init];
//    [picker.navigationbar setbartintcolor:qtxnavcolor]; // 修改相册的导航条的背景颜色
    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

当使用时，在所需使用的控制器里调用：

[qtximagepicker showimagepickerfromviewcontroller:self allowsediting:yes finishaction:^(uiimage *image) {
      if (image) {

        self.idsideimage = image;
        [qtxuploadimage post:qtx_xsz1url image:image name:@"xsz1" success:^(id json) {
          // 第一步请求上传
          qtxlog(@"图像上传请求成功 %@", json);

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

        } failure:^(nserror *error) {
          qtxlog(@"学生证图像上传请求失败 %@", error);
        }];
      }
    }];

第二步和第三步 需要和各位自己后台server联调，就属于普通的get/post请求了，这边就不放代码了哟

插一下，我们产品没让拍照的照片存储到相册

// 存储图片名称：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内容，希望对大家的学习有所帮助，也希望大家多多支持。