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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
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#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];
}
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