1.新建pch文件
//
// PrefixHeader.pch
// ShanXi
//
// Created by apple on 2019/4/1.
// Copyright © 2019年 suncere. All rights reserved.
//
#ifndef PrefixHeader_pch
#define PrefixHeader_pch
#import "AppTool.h"
#import "Datas.h"
#import "AnimationTool.h"
#import "ScreenTool.h"
// Include any system framework and library headers here that should be included in all compilation units.
// You will also need to set the Prefix Header build setting of one or more of your targets to reference this file.
#endif /* PrefixHeader_pch */
2. 添加pch文件