1.首先要找到SDImageCache类、才可以以下的方法

2.添加如下方法：

 

- (float)checkTmpSize
{
    float totalSize = 0;
    NSDirectoryEnumerator *fileEnumerator = [[NSFileManager defaultManager] enumeratorAtPath:diskCachePath];
    for (NSString *fileName in fileEnumerator)
    {
        NSString *filePath = [diskCachePath stringByAppendingPathComponent:fileName];

        NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];

        unsigned long long length = [attrs fileSize];

        totalSize += length / 1024.0 / 1024.0;
    }
//    NSLog(@"tmp size is %.2f",totalSize);

    return totalSize;
}

 

新版的SDImageCache类，已增加此方法

 

[[SDImageCache sharedImageCache] getSize];

 

3.在设置里这样使用

 

               #pragma 清理缓存图片                        - (void)clearTmpPics            {                [[SDImageCache sharedImageCache] clearDisk];                        //    [[SDImageCache sharedImageCache] clearMemory];//可有可无                            DLog(@"clear disk");                                float tmpSize = [[SDImageCache sharedImageCache] checkTmpSize];                            NSString *clearCacheName = tmpSize >= 1 ? [NSString stringWithFormat:@"清理缓存(%.2fM)",tmpSize] : [NSString stringWithFormat:@"清理缓存(%.2fK)",tmpSize * 1024];                            [configDataArray replaceObjectAtIndex:2 withObject:clearCacheName];                            [configTableView reloadData];            }
#pragma 清理缓存图片

- (void)clearTmpPics
{
    [[SDImageCache sharedImageCache] clearDisk];

//    [[SDImageCache sharedImageCache] clearMemory];//可有可无

    DLog(@"clear disk");

    float tmpSize = [[SDImageCache sharedImageCache] checkTmpSize];

    NSString *clearCacheName = tmpSize >= 1 ? [NSString stringWithFormat:@"清理缓存(%.2fM)",tmpSize] : [NSString stringWithFormat:@"清理缓存(%.2fK)",tmpSize * 1024];

    [configDataArray replaceObjectAtIndex:2 withObject:clearCacheName];

    [configTableView reloadData];
}