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关于ios如何实现视频和图片的上传, 我们先理清下思路，然后小编根据思路一步一步给大家详解实现过程。
思路:
#1. 如何获取图片?
#2. 如何获取视频?
#3. 如何把图片存到缓存路径中?
#4. 如何把视频存到缓存路径中?
#5. 如何上传?
接下来, 我们按照上面的思路一步一步实现
首先我们新建一个类, 用来储存每一个要上传的文件uploadmodel.h
#import <foundation/foundation.h> @interface uploadmodel : nsobject @property (nonatomic, strong) nsstring *path; @property (nonatomic, strong) nsstring *type; @property (nonatomic, strong) nsstring *name; @property (nonatomic, assign) bool isuploaded; @end
#1. 如何获取图片?
从相册选择 或者 拍照,
这部分可以用uiimagepickercontroller来实现
代码如下:
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- (void)actionphoto {
uialertcontroller *alertcontroller = \
[uialertcontroller alertcontrollerwithtitle:@""
message:@"上传照片"
preferredstyle:uialertcontrollerstyleactionsheet];
uialertaction *photoaction = \
[uialertaction actionwithtitle:@"从相册选择"
style:uialertactionstyledefault
handler:^(uialertaction * _nonnull action) {
nslog(@"从相册选择");
self.imagepicker.sourcetype = uiimagepickercontrollersourcetypephotolibrary;
self.imagepicker.mediatypes = @[(nsstring *)kuttypeimage];
self.imagepicker.allowsediting = yes;
[self presentviewcontroller:self.imagepicker
animated:yes
completion:nil];
}];
uialertaction *cameraaction = \
[uialertaction actionwithtitle:@"拍照"
style:uialertactionstyledefault
handler:^(uialertaction * _nonnull action) {
nslog(@"拍照");
if ([uiimagepickercontroller issourcetypeavailable:uiimagepickercontrollersourcetypecamera]) {
self.imagepicker.sourcetype = uiimagepickercontrollersourcetypecamera;
self.imagepicker.cameracapturemode = uiimagepickercontrollercameracapturemodephoto;
self.imagepicker.cameradevice = uiimagepickercontrollercameradevicerear;
self.imagepicker.allowsediting = yes;
[self presentviewcontroller:self.imagepicker
animated:yes
completion:nil];
}
}];
uialertaction *cancelaction = \
[uialertaction actionwithtitle:@"取消"
style:uialertactionstylecancel
handler:^(uialertaction * _nonnull action) {
nslog(@"取消");
}];
[alertcontroller addaction:photoaction];
[alertcontroller addaction:cameraaction];
[alertcontroller addaction:cancelaction];
[self presentviewcontroller:alertcontroller animated:yes completion:nil];
}
#2. 如果获取视频?
从相册选择 或者 拍摄
这部分也可以用uiimagepickercontroller来实现
代码:
- (void)actionvideo {
uialertcontroller *alertcontroller = \
[uialertcontroller alertcontrollerwithtitle:@""
message:@"上传视频"
preferredstyle:uialertcontrollerstyleactionsheet];
uialertaction *photoaction = \
[uialertaction actionwithtitle:@"从视频库选择"
style:uialertactionstyledefault
handler:^(uialertaction * _nonnull action) {
nslog(@"从视频库选择");
self.imagepicker.sourcetype = uiimagepickercontrollersourcetypephotolibrary;
self.imagepicker.mediatypes = @[(nsstring *)kuttypemovie];
self.imagepicker.allowsediting = no;
[self presentviewcontroller:self.imagepicker animated:yes completion:nil];
}];
uialertaction *cameraaction = \
[uialertaction actionwithtitle:@"录像"
style:uialertactionstyledefault
handler:^(uialertaction * _nonnull action) {
nslog(@"录像");
self.imagepicker.sourcetype = uiimagepickercontrollersourcetypecamera;
self.imagepicker.cameradevice = uiimagepickercontrollercameradevicerear;
self.imagepicker.mediatypes = [uiimagepickercontroller availablemediatypesforsourcetype:uiimagepickercontrollersourcetypecamera];
self.imagepicker.videoquality = uiimagepickercontrollerqualitytype640x480;
self.imagepicker.cameracapturemode = uiimagepickercontrollercameracapturemodevideo;
self.imagepicker.allowsediting = yes;
[self presentviewcontroller:self.imagepicker animated:yes completion:nil];
}];
uialertaction *cancelaction = \
[uialertaction actionwithtitle:@"取消"
style:uialertactionstylecancel
handler:^(uialertaction * _nonnull action) {
nslog(@"取消");
}];
[alertcontroller addaction:photoaction];
[alertcontroller addaction:cameraaction];
[alertcontroller addaction:cancelaction];
[self presentviewcontroller:alertcontroller animated:yes completion:nil];
}
#3, 关于缓存, 如何把照片存入缓存目录?
这部分我们先考虑缓存目录, 一般存在document 或者 temp里面
我们给图片和视频各创建一个缓存目录:
#define photocachepath [nstemporarydirectory() stringbyappendingpathcomponent:@"photocache"] #define videocachepath [nstemporarydirectory() stringbyappendingpathcomponent:@"videocache"]
把uiimage存入缓存的方法:
//将image保存到缓存路径中
- (void)saveimage:(uiimage *)image tocachepath:(nsstring *)path {
nsfilemanager *filemanager = [nsfilemanager defaultmanager];
if (![filemanager fileexistsatpath:photocachepath]) {
nslog(@"路径不存在, 创建路径");
[filemanager createdirectoryatpath:photocachepath
withintermediatedirectories:yes
attributes:nil
error:nil];
} else {
nslog(@"路径存在");
}
//[uiimagepngrepresentation(image) writetofile:path atomically:yes];
[uiimagejpegrepresentation(image, 1) writetofile:path atomically:yes];
}
4. 如何把视频存入缓存?
把视频存入缓存的方法:
//将视频保存到缓存路径中
- (void)savevideofrompath:(nsstring *)videopath tocachepath:(nsstring *)path {
nsfilemanager *filemanager = [nsfilemanager defaultmanager];
if (![filemanager fileexistsatpath:videocachepath]) {
nslog(@"路径不存在, 创建路径");
[filemanager createdirectoryatpath:videocachepath
withintermediatedirectories:yes
attributes:nil
error:nil];
} else {
nslog(@"路径存在");
}
nserror *error;
[filemanager copyitematpath:videopath topath:path error:&error];
if (error) {
nslog(@"文件保存到缓存失败");
}
}
从缓存获取图片的方法:
//从缓存路径获取照片
- (uiimage *)getimagefrompath:(nsstring *)path {
nsfilemanager *filemanager = [nsfilemanager defaultmanager];
if ([filemanager fileexistsatpath:path]) {
return [uiimage imagewithcontentsoffile:path];
}
return nil;
}
上传图片和视频的时候我们一般会利用当前时间给文件命名, 方法如下
//以当前时间合成图片名称
- (nsstring *)getimagenamebasecurrenttime {
nsdateformatter *dateformatter = [[nsdateformatter alloc] init];
[dateformatter setdateformat:@"yyyy-mm-dd hh-mm-ss"];
return [[dateformatter stringfromdate:[nsdate date]] stringbyappendingstring:@".jpg"];
}
//以当前时间合成视频名称
- (nsstring *)getvideonamebasecurrenttime {
nsdateformatter *dateformatter = [[nsdateformatter alloc] init];
[dateformatter setdateformat:@"yyyy-mm-dd hh-mm-ss"];
return [[dateformatter stringfromdate:[nsdate date]] stringbyappendingstring:@".mov"];
}
有时候需要获取视频的第一帧作为显示, 方法如下:
//获取视频的第一帧截图, 返回uiimage
//需要导入avfoundation.h
- (uiimage*) getvideopreviewimagewithpath:(nsurl *)videopath
{
avurlasset *asset = [[avurlasset alloc] initwithurl:videopath options:nil];
avassetimagegenerator *gen = [[avassetimagegenerator alloc] initwithasset:asset];
gen.appliespreferredtracktransform = yes;
cmtime time = cmtimemakewithseconds(0.0, 600);
nserror *error = nil;
cmtime actualtime;
cgimageref image = [gen copycgimageattime:time actualtime:&actualtime error:&error];
uiimage *img = [[uiimage alloc] initwithcgimage:image];
return img;
}
5. 如何上传?
下面就是上传方法:
我把服务器地址xx掉了, 大家可以改为自己的
//上传图片和视频
- (void)uploadimageandmoviebasemodel:(uploadmodel *)model {
//获取文件的后缀名
nsstring *extension = [model.name componentsseparatedbystring:@"."].lastobject;
//设置mimetype
nsstring *mimetype;
if ([model.type isequaltostring:@"image"]) {
mimetype = [nsstring stringwithformat:@"image/%@", extension];
} else {
mimetype = [nsstring stringwithformat:@"video/%@", extension];
}
//创建afhttpsessionmanager
afhttpsessionmanager *manager = [afhttpsessionmanager manager];
//设置响应文件类型为json类型
manager.responseserializer = [afjsonresponseserializer serializer];
//初始化requestserializer
manager.requestserializer = [afhttprequestserializer serializer];
manager.responseserializer.acceptablecontenttypes = nil;
//设置timeout
[manager.requestserializer settimeoutinterval:20.0];
//设置请求头类型
[manager.requestserializer setvalue:@"form/data" forhttpheaderfield:@"content-type"];
//设置请求头, 授权码
[manager.requestserializer setvalue:@"ygahcmxeeht4n/dmhkka/m0npn3ko0x8pmrnl17+hogw944gdgpzvyptememdwb9nlzz7mk1jba/0fpotxezua==" forhttpheaderfield:@"authentication"];
//上传服务器接口
nsstring *url = [nsstring stringwithformat:@"http://xxxxx.xxxx.xxx.xx.x"];
//开始上传
[manager post:url parameters:nil constructingbodywithblock:^(id<afmultipartformdata> _nonnull formdata) {
nserror *error;
bool success = [formdata appendpartwithfileurl:[nsurl fileurlwithpath:model.path] name:model.name filename:model.name mimetype:mimetype error:&error];
if (!success) {
nslog(@"appendpartwithfileurl error: %@", error);
}
} progress:^(nsprogress * _nonnull uploadprogress) {
nslog(@"上传进度: %f", uploadprogress.fractioncompleted);
} success:^(nsurlsessiondatatask * _nonnull task, id _nullable responseobject) {
nslog(@"成功返回: %@", responseobject);
model.isuploaded = yes;
[self.uploadedarray addobject:model];
} failure:^(nsurlsessiondatatask * _nullable task, nserror * _nonnull error) {
nslog(@"上传失败: %@", error);
model.isuploaded = no;
}];
}
这里有事先创建两个可变数组uploadarray, uploadedarray, 一个存放准要上传的内容, 一个存放上传完的内容
在准备上传后做什么操作, 可以检查两个数组的数量是否相等
最后是uiimagepickercontroller的协议方法
#pragma mark - uiimagepickerdelegate methods
- (void)imagepickercontroller:(uiimagepickercontroller *)picker
didfinishpickingmediawithinfo:(nsdictionary<nsstring *,id> *)info {
[picker dismissviewcontrolleranimated:yes completion:nil];
//获取用户选择或拍摄的是照片还是视频
nsstring *mediatype = info[uiimagepickercontrollermediatype];
if ([mediatype isequaltostring:(nsstring *)kuttypeimage]) {
//获取编辑后的照片
nslog(@"获取编辑后的好片");
uiimage *tempimage = info[uiimagepickercontrollereditedimage];
//将照片存入相册
if (tempimage) {
if (picker.sourcetype == uiimagepickercontrollersourcetypecamera) {
//将照片存入相册
nslog(@"将照片存入相册");
uiimagewritetosavedphotosalbum(tempimage, self, nil, nil);
}
//获取图片名称
nslog(@"获取图片名称");
nsstring *imagename = [self getimagenamebasecurrenttime];
nslog(@"图片名称: %@", imagename);
//将图片存入缓存
nslog(@"将图片写入缓存");
[self saveimage:tempimage
tocachepath:[photocachepath stringbyappendingpathcomponent:imagename]];
//创建uploadmodel
nslog(@"创建model");
uploadmodel *model = [[uploadmodel alloc] init];
model.path = [photocachepath stringbyappendingpathcomponent:imagename];
model.name = imagename;
model.type = @"image";
model.isuploaded = no;
//将模型存入待上传数组
nslog(@"将model存入待上传数组");
[self.uploadarray addobject:model];
}
}
else if ([mediatype isequaltostring:(nsstring *)kuttypemovie]) {
if (picker.sourcetype == uiimagepickercontrollersourcetypecamera) {
//如果是拍摄的视频, 则把视频保存在系统多媒体库中
nslog(@"video path: %@", info[uiimagepickercontrollermediaurl]);
alassetslibrary *library = [[alassetslibrary alloc] init];
[library writevideoatpathtosavedphotosalbum:info[uiimagepickercontrollermediaurl] completionblock:^(nsurl *asseturl, nserror *error) {
if (!error) {
nslog(@"视频保存成功");
} else {
nslog(@"视频保存失败");
}
}];
}
//生成视频名称
nsstring *medianame = [self getvideonamebasecurrenttime];
nslog(@"medianame: %@", medianame);
//将视频存入缓存
nslog(@"将视频存入缓存");
[self savevideofrompath:info[uiimagepickercontrollermediaurl] tocachepath:[videocachepath stringbyappendingpathcomponent:medianame]];
//创建uploadmodel
uploadmodel *model = [[uploadmodel alloc] init];
model.path = [videocachepath stringbyappendingpathcomponent:medianame];
model.name = medianame;
model.type = @"moive";
model.isuploaded = no;
//将model存入待上传数组
[self.uploadarray addobject:model];
}
//[picker dismissviewcontrolleranimated:yes completion:nil];
}
- (void)imagepickercontrollerdidcancel:(uiimagepickercontroller *)picker {
[picker dismissviewcontrolleranimated:yes completion:nil];
}
以上所述是小编给大家介绍的ios实现视频和图片的上传思路，希望对大家有所帮助
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