#pragma mark - 计算单个文件大小
- (long long)fileSizeAtPath:(NSString*)filePath{
NSFileManager* manager = [NSFileManager defaultManager];
if ([manager fileExistsAtPath:filePath]){
return [[manager attributesOfItemAtPath:filePath error:nil] fileSize];
}
return 0;
}
#pragma mark - 计算caches文件夹大小
- (float)folderSizeAtPath:(NSString*)folderPath{
NSFileManager *manager = [NSFileManager defaultManager];
if (![manager fileExistsAtPath:folderPath]) {
return 0;
}
NSEnumerator *childFiles = [[manager subpathsAtPath:folderPath] objectEnumerator];
NSString *fileName;
long long folderSize = 0;
while ((fileName = [childFiles nextObject]) != nil) {
NSString *fileAbsolutePath = [folderPath stringByAppendingPathComponent:fileName];
folderSize += [self fileSizeAtPath:fileAbsolutePath];
}
self.cacheSize = folderSize / (1024.0 * 1024.0);
return self.cacheSize;
}
#pragma mark - 清除缓存的方法
+ (void)clearCache:(NSString *)path{
NSFileManager *manager = [NSFileManager defaultManager];
if ([manager fileExistsAtPath:path]) {
NSArray *childerFiles = [manager subpathsAtPath:path];
for (NSString *fileName in childerFiles) {
//如果有需要，加入条件，过滤掉不想删除的文件
NSString *absolutePath = [path stringByAppendingPathComponent:fileName];
[manager removeItemAtPath:absolutePath error:nil];
}
}
//这个是清除SDWebImage的缓存的，没有引用这个第三方类库的不用写
[[SDImageCache sharedImageCache] cleanDisk];
}