使用 #pragma 消除警告⚠️
基本语法
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-相关命令"
// 你自己的代码
#pragma clang diagnostic pop
iOS常用的忽略警告类型
1. 未使用变量警告
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-variable"
NSInteger variableValue;
#pragma clang diagnostic pop
2. 方法弃用警告
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
// Some function be deprecated
#pragma clang diagnostic pop
3. 不兼容指针类型
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wincompatible-pointer-types"
//
#pragma clang diagnostic pop
4. 循环引用
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-retain-cycles"
//循环引用
#pragma clang diagnostic pop
5. 内存泄漏警告
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
//内存泄漏警告
#pragma clang diagnostic pop