具体代码如下

首先新建XMGPushGuideView类

XMGPushGuideView.h 文件

#import <UIKit/UIKit.h>

@interface XMGPushGuideView : UIView
/** 加载xib */
+(instancetype)guideView;
/** 判断当前的版本号，确定是加载推荐引导页 */
+(void)show;

@end

XMGPushGuideView.m 文件

#import "XMGPushGuideView.h"

@implementation XMGPushGuideView

+(instancetype)guideView{

return [[[NSBundle mainBundle] loadNibNamed:NSStringFromClass(self) owner:nil options:nil] lastObject];
}
- (IBAction)close {
    [self removeFromSuperview];
}

+(void)show{
   
    NSString *key=@"CFBundleShortVersionString";
   
    // 获得当前软件的版本号
    NSString *currentVersion = [NSBundle mainBundle].infoDictionary[key];
   
    //    获得沙盒中的存储的版本号
    NSString *sanboxVersion=[[NSUserDefaults standardUserDefaults] stringForKey:key];
   
    if (![currentVersion isEqualToString:sanboxVersion]) {
       
//        获得当前的window
        UIWindow *window=[UIApplication sharedApplication].keyWindow;

XMGPushGuideView *guideView=[XMGPushGuideView guideView];
        guideView.frame=window.bounds;
        [window addSubview:guideView];
        //        存储版本号
        [[NSUserDefaults standardUserDefaults] setObject:currentVersion forKey:key];
        //       马上把版本号存储到沙盒中
        [[NSUserDefaults standardUserDefaults] synchronize];
    }
   
}
@end

而在AppDelegate.m文件

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
   
//    创建窗口
    self.window=[[UIWindow alloc]init];
    self.window.frame=[UIScreen mainScreen].bounds;
   
//    设置窗口的跟控制器
     self.window.rootViewController=[[XMGTabBarController alloc]init];

//    显示窗口
    [self.window makeKeyAndVisible];

//    显示推送引导
    [XMGPushGuideView show];
   
   
    return YES;

}