SZKCleanCache
iOS开发-清理缓存,将计算缓存,清理缓存封装成类方法,并将清理结果利用block方法实现返回,一键调用,轻松实现
SZKCleanCache 详细介绍:http://www.jianshu.com/p/5ebe4f21c486
封装的SZKCleanCache.h中
#import <Foundation/Foundation.h>
typedef void(^cleanCacheBlock)();
@interface SZKCleanCache : NSObject
/**
* 清理缓存
*/
+(void)cleanCache:(cleanCacheBlock)block;
/**
* 整个缓存目录的大小
*/
+(float)folderSizeAtPath;
@end
SZKCleanCache.m中实现方法:
/**
* 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 ;
}
/**
* 计算整个目录大小
*/
+(float)folderSizeAtPath
{
NSString *folderPath=[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject];
NSFileManager * manager=[NSFileManager defaultManager ];
if (![manager fileExistsAtPath :folderPath]) {
return 0 ;
}
NSEnumerator *childFilesEnumerator = [[manager subpathsAtPath :folderPath] objectEnumerator ];
NSString * fileName;
long long folderSize = 0 ;
while ((fileName = [childFilesEnumerator nextObject ]) != nil ){
NSString * fileAbsolutePath = [folderPath stringByAppendingPathComponent :fileName];
folderSize += [ self fileSizeAtPath :fileAbsolutePath];
}
return folderSize/( 1024.0 * 1024.0 );
}
/**
* 清理缓存
*/
+(void)cleanCache:(cleanCacheBlock)block
{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
//文件路径
NSString *directoryPath=[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject];
NSArray *subpaths = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:directoryPath error:nil];
for (NSString *subPath in subpaths) {
NSString *filePath = [directoryPath stringByAppendingPathComponent:subPath];
[[NSFileManager defaultManager] removeItemAtPath:filePath error:nil];
}
//返回主线程
dispatch_async(dispatch_get_main_queue(), ^{
block();
});
});
}
SZKCleanCache 详细介绍:http://www.jianshu.com/p/5ebe4f21c486