清理缓存
#import "CacheClear.h"
#import "SDImageCache.h"
@implementation CacheClear
+ (CacheClear *)shareInstance
{
static CacheClear *model = nil;
static dispatch_once_t onecToken;// 锁
dispatch_once(&onecToken, ^{ // 最多调用一次
model = [[CacheClear alloc] init];
});
return model;
}
+ (float)fileSizeAtPath:(NSString *)path
{
NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath:path]) {
long long size = [fileManager attributesOfItemAtPath:path error:nil].fileSize;
return size/1024.0/1024.0;
}
return 0;
}
+ (float)folerSize
{
NSString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)lastObject];
NSFileManager *fileManager = [NSFileManager defaultManager];
float folerSize;
if ([fileManager fileExistsAtPath:path]) {
NSArray *childerFiles = [fileManager subpathsAtPath:path];
for (NSString *fileName in childerFiles) {
NSString *absolutePath = [path stringByAppendingPathComponent:fileName];
folerSize += [self fileSizeAtPath:absolutePath];
}
folerSize += [[SDImageCache sharedImageCache] getSize]/1024.0/1024.0;
return folerSize;
}
return 0;
}
+ (void)clearCache
{
NSString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)lastObject];
NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath:path]) {
NSArray *childerFiles = [fileManager subpathsAtPath:path];
for (NSString *fileName in childerFiles) {
// 如果有需要,添加条件,过滤掉不行清理的文件
NSString *absolutePath = [path stringByAppendingPathComponent:fileName];
[fileManager removeItemAtPath:absolutePath error:nil];
}
}
[[SDImageCache sharedImageCache] cleanDisk];
}