ios 清理缓存

一段清理缓存的代码如下：

dispatch_async(

dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
, ^{

NSString *cachPath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask, YES) objectAtIndex:0];

NSArray *files = [[NSFileManager defaultManager] subpathsAtPath:cachPath];

NSLog(@"files :%d",[files count]);

for (NSString *p in files) {

NSError *error;

NSString *path = [cachPath stringByAppendingPathComponent:p];

if ([[NSFileManager defaultManager] fileExistsAtPath:path]) {

[[NSFileManager defaultManager] removeItemAtPath:path error:&error];

}

}

[self performSelectorOnMainThread:@selector(clearCacheSuccess) withObject:nilwaitUntilDone:YES];});

-(void)clearCacheSuccess

{

NSLog(@"清理成功");

}