iOS开发之“warning:comparison between pointer and integer”

1.从服务器或者其他地方取到值myNumber,判断,出现如下:

// Comparison between pointer and integer ('id _Nullable' and 'int') 
if (myNumber == 0) { 
}

2.解决:转换类型

if ([myNumber intValue] == 0) {  

}