iOS 获取文件大小fileSize && 文件删除

NSDictionary *fileAttributes = [[NSFileManager defaultManager] fileAttributesAtPath:path traverseLink:YES];
    unsigned long long length = [fileAttributes fileSize];
    float ff = length/1024.0/1024.0;
NSLog(@"length== %.2f",ff);





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if ([[NSFileManager defaultManager] fileExistsAtPath:path]) {
                //如果存在就删除
                [[NSFileManager defaultManager] removeItemAtPath: path error:nil];
            }