iOS 图片上传使用base64或者二进制流上传头像功能

我们在写代码的时候经常会将头像进行上传服务器，上传头像图片我试过两种方式

一种方式就是使用base64字符串上传图片，这种形式我个人认为比较适合上传图片数量比较少的，比如上传头像，上传图片数量多的话，速度会慢些

另一种方式是使用二进制流进行上传图片，这种方式上传图片少或者数量多都没关系，速度也很快

demo地址：

demo地址:  https://github.com/tuwanli/picturehead

选择头像效果：

程序如下：

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];
 //初始化头像控件
 [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 = [uicolor whitecolor].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:@"选择头像"delegate:selfcancelbuttontitle:@"取消"destructivebuttontitle:nilotherbuttontitles:@"拍照",@"相册",@"图库",nil];
 [actionsheet showinview:[uiapplicationsharedapplication].keywindow];
}
- (void)actionsheet:(uiactionsheet *)actionsheet clickedbuttonatindex:(nsinteger)buttonindex
{
 if (buttonindex ==0) {//相机
  if([uiimagepickercontrollerissourcetypeavailable:uiimagepickercontrollersourcetypecamera])
  {
   nslog(@"支持相机");
   [selfmakephoto];
  }else{
   uialertview *alert = [[uialertviewalloc]initwithtitle:@"提示"message:@"请在设置-->隐私-->相机，中开启本应用的相机访问权限！！"delegate:selfcancelbuttontitle:@"取消"otherbuttontitles:@"我知道了",nil];
   [alertshow];
  }
 }elseif (buttonindex ==1){//相片
  if([uiimagepickercontrollerissourcetypeavailable:uiimagepickercontrollersourcetypephotolibrary])
  {
   nslog(@"支持相册");
   [selfchoosepicture];
  }else{
   uialertview *alert = [[uialertviewalloc]initwithtitle:@"提示"message:@"请在设置-->隐私-->照片，中开启本应用的相机访问权限！！"delegate:selfcancelbuttontitle:@"取消"otherbuttontitles:@"我知道了",nil];
   [alertshow];
  }
 }elseif (buttonindex ==2){//图册
  if([uiimagepickercontrollerissourcetypeavailable:uiimagepickercontrollersourcetypesavedphotosalbum])
  {
   nslog(@"支持图库");
   [selfpicturelibrary];
//   [self presentviewcontroller:picker animated:yes completion:nil];
  }else{
   uialertview *alert = [[uialertviewalloc]initwithtitle:@"提示"message:@"请在设置-->隐私-->照片，中开启本应用的相机访问权限！！"delegate:selfcancelbuttontitle:@"取消"otherbuttontitles:@"我知道了",nil];
   [alertshow];
  }
 }elseif (buttonindex ==3){
 }
}
//跳转到imagepicker里
- (void)makephoto
{
 pickercontroller.sourcetype =uiimagepickercontrollersourcetypecamera;
 [selfpresentviewcontroller:pickercontrolleranimated:yescompletion:nil];
}
//跳转到相册
- (void)choosepicture
{
 pickercontroller.sourcetype =uiimagepickercontrollersourcetypesavedphotosalbum;
 [selfpresentviewcontroller:pickercontrolleranimated:yescompletion:nil];
}
//跳转图库
- (void)picturelibrary
{
 pickercontroller.sourcetype =uiimagepickercontrollersourcetypephotolibrary;
 [selfpresentviewcontroller:pickercontrolleranimated:yescompletion:nil];
}
//用户取消退出picker时候调用
- (void)imagepickercontrollerdidcancel:(uiimagepickercontroller *)picker
{
 nslog(@"%@",picker);
 [pickercontrollerdismissviewcontrolleranimated:yescompletion:^{
 }];
}
//用户选中图片之后的回调
- (void)imagepickercontroller:(uiimagepickercontroller *)picker didfinishpickingmediawithinfo:(nsdictionary *)info
{
 nslog(@"%s,info == %@",__func__,info);
 uiimage *userimage = [selffixorientation:[infoobjectforkey:@"uiimagepickercontrolleroriginalimage"]];
 userimage = [selfscaleimage:userimagetoscale:0.3];
 //保存图片
// [self saveimage:userimage name:@"某个特定标示"];
 [pickercontrollerdismissviewcontrolleranimated:yescompletion:^{
 }];
 [self.headiconsetimage:userimage];
 self.headicon.contentmode = uiviewcontentmodescaleaspectfill;
 self.headicon.clipstobounds =yes;
 //照片上传
 [selfupdateheadicon:userimage];
}
- (void)updateheadicon:(uiimage *)photo
{
 //两种方式上传头像
 /*方式一：使用nsdata数据流传图片*/
 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字符串传图片*/
 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,idresponseobject) {
  if ([[responseobjectobjectforkey:@"flag"]intvalue] == 0) {
  }else{
  }
 }
   failure:^(afhttprequestoperation *operation,nserror *error) {
   }];
}
//保存照片到沙盒路径(保存)
- (void)saveimage:(uiimage *)image name:(nsstring *)iconname
{
 nsarray *paths =nssearchpathfordirectoriesindomains(nsdocumentdirectory,nsuserdomainmask,yes);
 //写入文件
 nsstring *icomimage = iconname;
 nsstring *filepath = [[pathsobjectatindex:0]stringbyappendingpathcomponent:[nsstringstringwithformat:@"%@.png", icomimage]];
 // 保存文件的名称
 // [[self getdatabyimage:image] writetofile:filepath atomically:yes];
 [uiimagepngrepresentation(image)writetofile: filepath atomically:yes];
}
//缩放图片
- (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(手机转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;
}

此demo从相册选区图片使用的单选图片，如果想看多选图片显示在scrollview中demo 地址：

https://github.com/tuwanli/picturemutipleselect

总结

以上所述是小编给大家介绍的ios 图片上传使用base64或者二进制流上传头像功能，希望对大家有所帮助