iOS 使用AFN for 循环上传多张图片至服务器，用户手机项目上面的图片顺序查看
2016-11-28 09:45
633 查看
AFN 是非常强大的网络请求工具，作为ios 开发者应该都接触或者使用这个第三方，但是项目中遇到的问题是，客户端上传图片给服务器，服务器再推给我接收这个图片的对象，但是要求是对象接受的公告也应该是我发送图片的那个顺序，而都知道AFN是异步的，服务器不能够判断我客户端图片的顺序，因此需要我改变AFN异步或者想方设法的去让图片顺序上传给服务器，for循环当然是在主线程，不多说直接上代码
__blockNSMutableArray * accessoryArr = [[NSMutableArrayalloc]initWithCapacity:_photoMessage.count];
if (_photoMessage.count>0)
{
原本更改过测试了一次好了，但是现在发现是我自测不仔细造成的,考虑到线程处理太过麻烦（关键是复杂的自己不熟悉）只能使用笨方法
if (_photoMessage.count>0)
{
//防止数组越界
NSMutableArray * upLoadArr = [[NSMutableArrayalloc]initWithCapacity:accessoryArr.count];
for (int i =
0; i<_photoMessage.count;
i++) {
//初始化一个数组用于替换图片的顺序
[upLoadArr addObject:@(i)];
[DataRequestgetRequestWithPh
4000
oto:_photoMessage[i]
withGetImgInt:i
success:^(id result) {
NSDictionary*resultDic = (NSDictionary*)result;
NSMutableDictionary * UpphotoDic = [[NSMutableDictionaryalloc]init];
NSDictionary * singlePhotoDic = resultDic[@"datas"];
[UpphotoDic setObject:singlePhotoDic[@"fileName"]
forKey:@"fileName"];
[UpphotoDic setObject:singlePhotoDic[@"size"]
forKey:@"fileSize"];
[UpphotoDic setObject:singlePhotoDic[@"url1"]
forKey:@"fileUrl"];
[accessoryArr addObject:@{@(i):
UpphotoDic}];
if (accessoryArr.count ==_photoMessage.count)
{
dispatch_async(dispatch_get_main_queue(), ^{
// 主线程执行：
for (int i =
0; i<accessoryArr.count; i++) {
[upLoadArr replaceObjectAtIndex:[[[accessoryArr[i]
allKeys]
firstObject]
integerValue]
withObject:[[accessoryArr[i]
allValues]
firstObject]];
}
PublishNoticeModule * PNModule = [selfpublishNoticeInterface:upLoadArr];
// //条件都满足的时候和服务器进行交互
[DataRequestgetRequestWithNoticeDic:PNModule
success:^(id result) {
NSDictionary * dic = (NSDictionary*)result;
if (dic[@"success"]) {
[selfshowHubTitle:self.viewtitleText:@"发布成功"location:FULL_HEIGHT/2-80];
[selfperformSelector:@selector(jumpRecentVC)
withObject:selfafterDelay:1];
}
}
failed:^(id failResult) {
[selfshowHubTitle:self.viewtitleText:@"发布失败"location:FULL_HEIGHT/2-80];
_rightBtnItem.enabled =
YES;
}];
});
}
} failed:^(id failResult) {
[selfshowHubTitle:self.viewtitleText:@"发布失败"location:FULL_HEIGHT/2-80];
_rightBtnItem.enabled =
YES;
}];
}
／＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊／有问题
//原子性保护，保证同时只有一个线程进入操作，从而实现数据图片上传的顺序性，原子性保护，相当于lock，这样的话，我的for循环的请求只有请求成功之后才会进入下一个请求，防止多线程同时访问导致的数据混乱，这样即可保护我上传的数据的顺序性和正确性
dispatch_queue_t defaultQueue =dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0);
dispatch_semaphore_t semaphore =dispatch_semaphore_create(1);
_photoMessage存放的是图片的数组
for (int i =0;
i<_photoMessage.count; i++) {
dispatch_async(defaultQueue, ^{
dispatch_semaphore_wait(semaphore,DISPATCH_TIME_FOREVER);
[DataRequestgetRequestWithPhoto:_photoMessage[i]withGetImgInt:isuccess:^(id
result) {
NSDictionary*resultDic = (NSDictionary*)result;
NSMutableDictionary * UpphotoDic = [[NSMutableDictionaryalloc]init];
NSDictionary * singlePhotoDic = resultDic[@"datas"];
[UpphotoDic
setObject:singlePhotoDic[@"fileName"]forKey:@"fileName"];
[UpphotoDic
setObject:singlePhotoDic[@"size"]forKey:@"fileSize"];
[UpphotoDic
setObject:singlePhotoDic[@"url1"]forKey:@"fileUrl"];
[accessoryArr
addObject:@{@(i): UpphotoDic}];
if (accessoryArr.count ==_photoMessage.count)
{
NSMutableArray *uploadArr =@[].mutableCopy;
for (int i =0;
i<accessoryArr.count; i++) {
NSDictionary * dic = accessoryArr[i];
[uploadArraddObject:[dic.allValuesfirstObject]];
}
PublishNoticeModule * PNModule = [selfpublishNoticeInterface:uploadArr];
// //条件都满足的时候和服务器进行交互
[DataRequestgetRequestWithNoticeDic:PNModulesuccess:^(id
result) {
NSDictionary * dic = (NSDictionary*)result;
if (dic[@"success"]) {
[selfshowHubTitle:self.viewtitleText:@"发布成功"location:HEIGHT/2-80];
[selfperformSelector:@selector(jumpRecentVC)withObject:selfafterDelay:1];
}
}
failed:^(id failResult) {
[selfshowHubTitle:self.viewtitleText:@"发布失败"location:HEIGHT/2-80];
_rightBtnItem.enabled =YES;
}];
}
} failed:^(id failResult) {
[selfshowHubTitle:self.viewtitleText:@"发布失败"location:HEIGHT/2-80];
_rightBtnItem.enabled =YES;
}];
dispatch_semaphore_signal(semaphore);
});
}
}
／＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊／
//既然for循环上传图片都处理了，那就把上传图片的代码一并奉上
+(void)getRequestWithPhoto:(UIImage*)image withGetImgInt:(NSInteger)index
success:(SuccessBlock)success failed:(FailBlock)fail{
AFHTTPSessionManager * manager = [AFHTTPSessionManagermanager];
NSString * token = [[NSUserDefaultsstandardUserDefaults]objectForKey:@"token"];
NSString * urlStr = [NSStringstringWithFormat:@"%@?ticket=%@",URL,token];//URL
此处填写ing求地址
manager.responseSerializer.acceptableContentTypes
=[NSSetsetWithObjects:@"application/json",@"text/json"
,nil];
[manager POST:urlStrparameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull
formData) {
NSData *data ;
if (UIImagePNGRepresentation(image)==nil)
{
data = UIImageJPEGRepresentation(image,1);
}else{
data = UIImagePNGRepresentation(image);
}
NSDateFormatter *formatter = [[NSDateFormatteralloc]init];
formatter.dateFormat =@"yyyyMMddHHmmss";
NSString *str = [formatterstringFromDate:[NSDatedate]];
NSString *fileName = [NSStringstringWithFormat:@"%@%ld.png",
str,index];//将图片是当前的时间命名防止图片的重复，确保图片的唯一性
[formData appendPartWithFileData:dataname:@"file"fileName:fileNamemimeType:@"image/png"];//将image转化成data类型，并以时间作为文件名上传至服务器,mimeType
填写的是图片的后缀
} progress:^(NSProgress *_Nonnull
uploadProgress) {
} success:^(NSURLSessionDataTask *_Nonnull
task,id _Nullable responseObject) {
if (success) {
success(responseObject);//上传成功服务器所返回给我的字典
}
} failure:^(NSURLSessionDataTask *_Nullable
task,NSError *_Nonnull error) {
if (fail) {
fail(error);
}
}];
};
用户接收到发布的图片之后在使用MWPhotoBrower来进行图片的预览
NSMutableArray * noticeImageArr = [selfgetCachesAllDownImage];//
getCachesAllDownImage 用于将下载的图片存放在沙盒中进行缓存
//获取缓存里面的所有图片
-(NSMutableArray*)getCachesAllDownImage{
NSMutableArray * photoArr = [[NSMutableArrayalloc]init];
for (NSDictionary * fileDic in_noticeModel.attachs)
{
NSString * path = [selfdicCaches];
NSInteger fileType = [fileDic[@"fileType"]integerValue];
UIImage * noticeImg =nil;
if (fileType==1) {
NSString *imageFilePath = [pathstringByAppendingPathComponent:fileDic[@"fileName"]];
if ([[NSFileManagerdefaultManager]fileExistsAtPath:imageFilePath])
{
noticeImg = [UIImageimageWithContentsOfFile:imageFilePath];
if (noticeImg) {
[photoArr addObject:noticeImg];
}
}else{
NSURL *url = [NSURLURLWithString:fileDic[@"fileUrl"]];
NSData *resultData = [NSDatadataWithContentsOfURL:url];
if (resultData) {
noticeImg = [UIImageimageWithData:resultData];
BOOL success = [UIImageJPEGRepresentation(noticeImg,1)writeToFile:imageFilePath atomically:YES];
if (success){
}
}
if (noticeImg) {
[photoArr addObject:noticeImg];
}
}
}
}
return photoArr;
}
-(NSString*)dicCaches
{
//Caches的url路径
NSArray *cacPath =NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask,YES);
NSString *cachePath = [cacPathobjectAtIndex:0];
return cachePath;
}
//查看的图片存在的话，就显示
if (noticeImageArr) {
dispatch_async(dispatch_get_main_queue(),
^{
_lookPhotoArr = [NSMutableArraynew];
for (int i =0;
i<noticeImageArr.count; i++) {
MWPhoto * photo = [MWPhotophotoWithImage:noticeImageArr[i]];
[_lookPhotoArraddObject:photo];
}
[selfhideHUD];
if (_lookPhotoArr.count>0)
{
self.brower = [[MWPhotoBrowseralloc]initWithDelegate:self];
[self.browersetCurrentPhotoIndex:self.selectIndex];
self.brower.displayActionButton
= YES;
self.brower.displayNavArrows
= NO;
[self.browersetHidesBottomBarWhenPushed:YES];
self.brower.zoomPhotosToFill
= YES;
[self.viewaddSubview:self.brower.view];
[selfaddChildViewController:self.brower];
}
//MW的三个代理方法
-(NSUInteger)numberOfPhotosInPhotoBrowser:(MWPhotoBrowser
*)photoBrowser{
return [self.lookPhotoArrcount];
}
-(id<MWPhoto>)photoBrowser:(MWPhotoBrowser
*)photoBrowser photoAtIndex:(NSUInteger)index{
if (index <self.lookPhotoArr.count)
return [self.lookPhotoArrobjectAtIndex:index];
returnnil;
}
// 滑动执行的方法
- (void)photoBrowser:(MWPhotoBrowser *)photoBrowser didDisplayPhotoAtIndex:(NSUInteger)index{
NSDictionary * fileDic = [_noticeModel.attachsobjectAtIndex:index];
if (fileDic) {
self.titleLab.text
= fileDic[@"fileName"];
}
}
//获取缓存里面的所有图片
-(NSMutableArray*)getCachesAllDownImage{
NSMutableArray * photoArr = [[NSMutableArrayalloc]init];
for (NSDictionary * fileDic in_noticeModel.attachs)
{
NSString * path = [selfdicCaches];
NSInteger fileType = [fileDic[@"fileType"]integerValue];
UIImage * noticeImg =nil;
//1
if (fileType==1) {
//得到文件路径
NSString *imageFilePath = [pathstringByAppendingPathComponent:fileDic[@"fileName"]];
//如果存在URL 缓存则沙盒里面直接读
if ([[NSFileManagerdefaultManager]fileExistsAtPath:imageFilePath])
{
noticeImg = [UIImageimageWithContentsOfFile:imageFilePath];
if (noticeImg) {
[photoArr addObject:noticeImg];
}
}else{
//如果本地不存在缓存的话直接使用dataContentsOfUrl 再使用
imageWithData转化为image
NSURL *url = [NSURLURLWithString:fileDic[@"fileUrl"]];
NSData *resultData = [NSDatadataWithContentsOfURL:url];
if (resultData) {
noticeImg = [UIImageimageWithData:resultData];
BOOL success = [UIImageJPEGRepresentation(noticeImg,1)writeToFile:imageFilePath atomically:YES];
if (success){
}
}
if (noticeImg) {
[photoArr addObject:noticeImg];
}
}
}
}
return photoArr;
}
-(NSString*)dicCaches
{
NSArray *cacPath =NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask,YES);
NSString *cachePath = [cacPathobjectAtIndex:0];
return cachePath;
}
__blockNSMutableArray * accessoryArr = [[NSMutableArrayalloc]initWithCapacity:_photoMessage.count];
if (_photoMessage.count>0)
{
原本更改过测试了一次好了，但是现在发现是我自测不仔细造成的,考虑到线程处理太过麻烦（关键是复杂的自己不熟悉）只能使用笨方法
if (_photoMessage.count>0)
{
//防止数组越界
NSMutableArray * upLoadArr = [[NSMutableArrayalloc]initWithCapacity:accessoryArr.count];
for (int i =
0; i<_photoMessage.count;
i++) {
//初始化一个数组用于替换图片的顺序
[upLoadArr addObject:@(i)];
[DataRequestgetRequestWithPh
4000
oto:_photoMessage[i]
withGetImgInt:i
success:^(id result) {
NSDictionary*resultDic = (NSDictionary*)result;
NSMutableDictionary * UpphotoDic = [[NSMutableDictionaryalloc]init];
NSDictionary * singlePhotoDic = resultDic[@"datas"];
[UpphotoDic setObject:singlePhotoDic[@"fileName"]
forKey:@"fileName"];
[UpphotoDic setObject:singlePhotoDic[@"size"]
forKey:@"fileSize"];
[UpphotoDic setObject:singlePhotoDic[@"url1"]
forKey:@"fileUrl"];
[accessoryArr addObject:@{@(i):
UpphotoDic}];
if (accessoryArr.count ==_photoMessage.count)
{
dispatch_async(dispatch_get_main_queue(), ^{
// 主线程执行：
for (int i =
0; i<accessoryArr.count; i++) {
[upLoadArr replaceObjectAtIndex:[[[accessoryArr[i]
allKeys]
firstObject]
integerValue]
withObject:[[accessoryArr[i]
allValues]
firstObject]];
}
PublishNoticeModule * PNModule = [selfpublishNoticeInterface:upLoadArr];
// //条件都满足的时候和服务器进行交互
[DataRequestgetRequestWithNoticeDic:PNModule
success:^(id result) {
NSDictionary * dic = (NSDictionary*)result;
if (dic[@"success"]) {
[selfshowHubTitle:self.viewtitleText:@"发布成功"location:FULL_HEIGHT/2-80];
[selfperformSelector:@selector(jumpRecentVC)
withObject:selfafterDelay:1];
}
}
failed:^(id failResult) {
[selfshowHubTitle:self.viewtitleText:@"发布失败"location:FULL_HEIGHT/2-80];
_rightBtnItem.enabled =
YES;
}];
});
}
} failed:^(id failResult) {
[selfshowHubTitle:self.viewtitleText:@"发布失败"location:FULL_HEIGHT/2-80];
_rightBtnItem.enabled =
YES;
}];
}
／＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊／有问题
//原子性保护，保证同时只有一个线程进入操作，从而实现数据图片上传的顺序性，原子性保护，相当于lock，这样的话，我的for循环的请求只有请求成功之后才会进入下一个请求，防止多线程同时访问导致的数据混乱，这样即可保护我上传的数据的顺序性和正确性
dispatch_queue_t defaultQueue =dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0);
dispatch_semaphore_t semaphore =dispatch_semaphore_create(1);
_photoMessage存放的是图片的数组
for (int i =0;
i<_photoMessage.count; i++) {
dispatch_async(defaultQueue, ^{
dispatch_semaphore_wait(semaphore,DISPATCH_TIME_FOREVER);
[DataRequestgetRequestWithPhoto:_photoMessage[i]withGetImgInt:isuccess:^(id
result) {
NSDictionary*resultDic = (NSDictionary*)result;
NSMutableDictionary * UpphotoDic = [[NSMutableDictionaryalloc]init];
NSDictionary * singlePhotoDic = resultDic[@"datas"];
[UpphotoDic
setObject:singlePhotoDic[@"fileName"]forKey:@"fileName"];
[UpphotoDic
setObject:singlePhotoDic[@"size"]forKey:@"fileSize"];
[UpphotoDic
setObject:singlePhotoDic[@"url1"]forKey:@"fileUrl"];
[accessoryArr
addObject:@{@(i): UpphotoDic}];
if (accessoryArr.count ==_photoMessage.count)
{
NSMutableArray *uploadArr =@[].mutableCopy;
for (int i =0;
i<accessoryArr.count; i++) {
NSDictionary * dic = accessoryArr[i];
[uploadArraddObject:[dic.allValuesfirstObject]];
}
PublishNoticeModule * PNModule = [selfpublishNoticeInterface:uploadArr];
// //条件都满足的时候和服务器进行交互
[DataRequestgetRequestWithNoticeDic:PNModulesuccess:^(id
result) {
NSDictionary * dic = (NSDictionary*)result;
if (dic[@"success"]) {
[selfshowHubTitle:self.viewtitleText:@"发布成功"location:HEIGHT/2-80];
[selfperformSelector:@selector(jumpRecentVC)withObject:selfafterDelay:1];
}
}
failed:^(id failResult) {
[selfshowHubTitle:self.viewtitleText:@"发布失败"location:HEIGHT/2-80];
_rightBtnItem.enabled =YES;
}];
}
} failed:^(id failResult) {
[selfshowHubTitle:self.viewtitleText:@"发布失败"location:HEIGHT/2-80];
_rightBtnItem.enabled =YES;
}];
dispatch_semaphore_signal(semaphore);
});
}
}
／＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊／
//既然for循环上传图片都处理了，那就把上传图片的代码一并奉上
+(void)getRequestWithPhoto:(UIImage*)image withGetImgInt:(NSInteger)index
success:(SuccessBlock)success failed:(FailBlock)fail{
AFHTTPSessionManager * manager = [AFHTTPSessionManagermanager];
NSString * token = [[NSUserDefaultsstandardUserDefaults]objectForKey:@"token"];
NSString * urlStr = [NSStringstringWithFormat:@"%@?ticket=%@",URL,token];//URL
此处填写ing求地址
manager.responseSerializer.acceptableContentTypes
=[NSSetsetWithObjects:@"application/json",@"text/json"
,nil];
[manager POST:urlStrparameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull
formData) {
NSData *data ;
if (UIImagePNGRepresentation(image)==nil)
{
data = UIImageJPEGRepresentation(image,1);
}else{
data = UIImagePNGRepresentation(image);
}
NSDateFormatter *formatter = [[NSDateFormatteralloc]init];
formatter.dateFormat =@"yyyyMMddHHmmss";
NSString *str = [formatterstringFromDate:[NSDatedate]];
NSString *fileName = [NSStringstringWithFormat:@"%@%ld.png",
str,index];//将图片是当前的时间命名防止图片的重复，确保图片的唯一性
[formData appendPartWithFileData:dataname:@"file"fileName:fileNamemimeType:@"image/png"];//将image转化成data类型，并以时间作为文件名上传至服务器,mimeType
填写的是图片的后缀
} progress:^(NSProgress *_Nonnull
uploadProgress) {
} success:^(NSURLSessionDataTask *_Nonnull
task,id _Nullable responseObject) {
if (success) {
success(responseObject);//上传成功服务器所返回给我的字典
}
} failure:^(NSURLSessionDataTask *_Nullable
task,NSError *_Nonnull error) {
if (fail) {
fail(error);
}
}];
};
用户接收到发布的图片之后在使用MWPhotoBrower来进行图片的预览
NSMutableArray * noticeImageArr = [selfgetCachesAllDownImage];//
getCachesAllDownImage 用于将下载的图片存放在沙盒中进行缓存
//获取缓存里面的所有图片
-(NSMutableArray*)getCachesAllDownImage{
NSMutableArray * photoArr = [[NSMutableArrayalloc]init];
for (NSDictionary * fileDic in_noticeModel.attachs)
{
NSString * path = [selfdicCaches];
NSInteger fileType = [fileDic[@"fileType"]integerValue];
UIImage * noticeImg =nil;
if (fileType==1) {
NSString *imageFilePath = [pathstringByAppendingPathComponent:fileDic[@"fileName"]];
if ([[NSFileManagerdefaultManager]fileExistsAtPath:imageFilePath])
{
noticeImg = [UIImageimageWithContentsOfFile:imageFilePath];
if (noticeImg) {
[photoArr addObject:noticeImg];
}
}else{
NSURL *url = [NSURLURLWithString:fileDic[@"fileUrl"]];
NSData *resultData = [NSDatadataWithContentsOfURL:url];
if (resultData) {
noticeImg = [UIImageimageWithData:resultData];
BOOL success = [UIImageJPEGRepresentation(noticeImg,1)writeToFile:imageFilePath atomically:YES];
if (success){
}
}
if (noticeImg) {
[photoArr addObject:noticeImg];
}
}
}
}
return photoArr;
}
-(NSString*)dicCaches
{
//Caches的url路径
NSArray *cacPath =NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask,YES);
NSString *cachePath = [cacPathobjectAtIndex:0];
return cachePath;
}
//查看的图片存在的话，就显示
if (noticeImageArr) {
dispatch_async(dispatch_get_main_queue(),
^{
_lookPhotoArr = [NSMutableArraynew];
for (int i =0;
i<noticeImageArr.count; i++) {
MWPhoto * photo = [MWPhotophotoWithImage:noticeImageArr[i]];
[_lookPhotoArraddObject:photo];
}
[selfhideHUD];
if (_lookPhotoArr.count>0)
{
self.brower = [[MWPhotoBrowseralloc]initWithDelegate:self];
[self.browersetCurrentPhotoIndex:self.selectIndex];
self.brower.displayActionButton
= YES;
self.brower.displayNavArrows
= NO;
[self.browersetHidesBottomBarWhenPushed:YES];
self.brower.zoomPhotosToFill
= YES;
[self.viewaddSubview:self.brower.view];
[selfaddChildViewController:self.brower];
}
//MW的三个代理方法
-(NSUInteger)numberOfPhotosInPhotoBrowser:(MWPhotoBrowser
*)photoBrowser{
return [self.lookPhotoArrcount];
}
-(id<MWPhoto>)photoBrowser:(MWPhotoBrowser
*)photoBrowser photoAtIndex:(NSUInteger)index{
if (index <self.lookPhotoArr.count)
return [self.lookPhotoArrobjectAtIndex:index];
returnnil;
}
// 滑动执行的方法
- (void)photoBrowser:(MWPhotoBrowser *)photoBrowser didDisplayPhotoAtIndex:(NSUInteger)index{
NSDictionary * fileDic = [_noticeModel.attachsobjectAtIndex:index];
if (fileDic) {
self.titleLab.text
= fileDic[@"fileName"];
}
}
//获取缓存里面的所有图片
-(NSMutableArray*)getCachesAllDownImage{
NSMutableArray * photoArr = [[NSMutableArrayalloc]init];
for (NSDictionary * fileDic in_noticeModel.attachs)
{
NSString * path = [selfdicCaches];
NSInteger fileType = [fileDic[@"fileType"]integerValue];
UIImage * noticeImg =nil;
//1
if (fileType==1) {
//得到文件路径
NSString *imageFilePath = [pathstringByAppendingPathComponent:fileDic[@"fileName"]];
//如果存在URL 缓存则沙盒里面直接读
if ([[NSFileManagerdefaultManager]fileExistsAtPath:imageFilePath])
{
noticeImg = [UIImageimageWithContentsOfFile:imageFilePath];
if (noticeImg) {
[photoArr addObject:noticeImg];
}
}else{
//如果本地不存在缓存的话直接使用dataContentsOfUrl 再使用
imageWithData转化为image
NSURL *url = [NSURLURLWithString:fileDic[@"fileUrl"]];
NSData *resultData = [NSDatadataWithContentsOfURL:url];
if (resultData) {
noticeImg = [UIImageimageWithData:resultData];
BOOL success = [UIImageJPEGRepresentation(noticeImg,1)writeToFile:imageFilePath atomically:YES];
if (success){
}
}
if (noticeImg) {
[photoArr addObject:noticeImg];
}
}
}
}
return photoArr;
}
-(NSString*)dicCaches
{
NSArray *cacPath =NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask,YES);
NSString *cachePath = [cacPathobjectAtIndex:0];
return cachePath;
}
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