iOS 清理缓存功能实现第一种方法

添加一个提示框效果导入第三方MBProgressHUD

    #import "MBProgressHUD+MJ.h"

/**
 *  清理缓存第一种方法
 */
-(void)clearCache
{
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 :%lu",[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:nil waitUntilDone:YES];});

}
-(void)clearCacheSuccess
{

　　[MBProgressHUD showSuccess:@"清理完毕"];

    NSLog(@"清理成功");
}