- (void)cleunupCache
{
NSFileManager *fm = [NSFileManager defaultManager];
NSString *cachePath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSLog(@"%@", cachePath);
if ([fm fileExistsAtPath: cachePath])
{
[fm removeItemAtPath:cachePath error:nil];
}
}