#import <SDImageCache.h>
-(NSString *)getFileCache{
self.cacheStr = [NSString stringWithFormat:@"%.2fM",[self filePath]];
return self.cacheStr;
}
- (float)filePath {
NSString * cachPath = [ NSSearchPathForDirectoriesInDomains ( NSCachesDirectory , NSUserDomainMask , YES ) firstObject ];
return[selffolderSizeAtPath:cachPath];
}
//遍历文件夹获得文件夹大小，返回多少M
- (float)folderSizeAtPath:(NSString*) folderPath {
NSFileManager* manager = [NSFileManager defaultManager];
if(![managerfileExistsAtPath:folderPath])return0;
NSEnumerator*childFilesEnumerator = [[managersubpathsAtPath:folderPath]objectEnumerator];
NSString* fileName;
longlongfolderSize =0;
while((fileName = [childFilesEnumeratornextObject]) !=nil){
NSString* fileAbsolutePath = [folderPath stringByAppendingPathComponent:fileName];
folderSize += [selffileSizeAtPath:fileAbsolutePath];
}
//SDWebImage框架自身计算缓存的实现
folderSize += [[SDImageCache sharedImageCache] totalDiskSize];
returnfolderSize/(1024.0*1024.0);
}
- (longlong)fileSizeAtPath:(NSString*) filePath{
NSFileManager* manager = [NSFileManager defaultManager];
if([managerfileExistsAtPath:filePath]){
return [[manager attributesOfItemAtPath:filePath error:nil] fileSize];
}
return0;
}
- (void)clearCacheDidSelected {
MJWeakSelf
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提示" message:[NSString stringWithFormat:@"缓存大小为%@,确定要清理缓存吗？",self.cacheStr] preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil];
UIAlertAction *confirmAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[weakSelf.tableViewreloadData];
[weakSelfclearCache];
}];
[alertControlleraddAction:cancelAction];
[alertControlleraddAction:confirmAction];
[self presentViewController:alertController animated:YES completion:nil];
}
- (void)clearCache {
NSString * cachPath = [ NSSearchPathForDirectoriesInDomains ( NSCachesDirectory , NSUserDomainMask , YES ) firstObject ];
NSFileManager *fileManager=[NSFileManager defaultManager];
if([fileManagerfileExistsAtPath:cachPath]) {
NSArray*childerFiles=[fileManagersubpathsAtPath:cachPath];
for(NSString*fileNameinchilderFiles) {
//如有需要，加入条件，过滤掉不想删除的文件
NSString*absolutePath=[cachPathstringByAppendingPathComponent:fileName];
[fileManagerremoveItemAtPath:absolutePatherror:nil];
}
}
[[SDImageCache sharedImageCache] clearMemory];
}
