使用SDWebImage 清除App 缓存

首先在tableView上面加载图片缓存大小

{

        NSString *cachesPath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];
        
        NSString *floderPath = [cachesPath stringByAppendingPathComponent:@"com.hackemist.SDWebImageCache.default"];
        
        NSLog(@"cachesPath --> %@", floderPath);
        
        float floderSize = [self folderSizeAtPath:floderPath];
        
        NSLog(@"floderSize : %f", floderSize);

       //加载缓存到UI界面即可！！！

}

#pragma mark 清理缓存
- (void)clearTmpPics
{
    [[SDImageCache sharedImageCache] clearDisk];
    
    [[SDImageCache sharedImageCache] clearMemory];//可有可无
    
    NSLog(@"clear disk");
    
    float tmpSize = [[SDImageCache sharedImageCache] getSize];
    
    NSString *clearCacheName = tmpSize >= 1 ? [NSString stringWithFormat:@"清理缓存(%.2fM)",tmpSize] : [NSString stringWithFormat:@"清理缓存(%.2fK)",tmpSize * 1024];
    NSLog(@"%@", clearCacheName);
}

// 缓存中单个文件大小
- (long long) fileSizeAtPath:(NSString*) filePath{
    NSFileManager* manager = [NSFileManager defaultManager];
    
    if ([manager fileExistsAtPath:filePath]){
        
        return [[manager attributesOfItemAtPath:filePath error:nil] fileSize];
    }
    return 0;
}

// 全部文件大小
- (float)folderSizeAtPath:(NSString*) folderPath{
    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);
}

使用SDWebImage 清除App本地缓存 还是比较简单的 希望以后如果遇到相似的问题

可以和各位大神一起探讨！！！