@interface PJXPushGuideView : UIView

+(instancetype)guideView;

+(void)show;

@end

#import "PJXPushGuideView.h"

@implementation PJXPushGuideView

+(instancetype)guideView{

    //加载xib

    PJXPushGuideView *guideView = [[[NSBundle mainBundle]loadNibNamed:NSStringFromClass(self) owner:nil options:nil] lastObject];

    guideView.backgroundColor = [UIColor colorWithRed:49.0/255.0 green:49.0/255.0  blue:49.0/255.0  alpha:0.75];

    return guideView;

}

- (IBAction)remove:(id)sender {

    [self removeFromSuperview];

}

+(void)show

{

    NSDictionary *info = [[NSBundle mainBundle]infoDictionary];

    NSString *key = @"CFBundleShortVersionString";

    NSString * currentVersion = [info objectForKey:key];

    NSString *sanboxVersion = [[NSUserDefaults standardUserDefaults] stringForKey:key];

    if (![currentVersion isEqualToString:sanboxVersion]) {

        PJXPushGuideView *pushView = [PJXPushGuideView guideView];

        pushView.frame = [UIApplication sharedApplication].keyWindow.bounds;

        [[UIApplication sharedApplication].keyWindow addSubview:pushView];

        [[NSUserDefaults standardUserDefaults] setObject:currentVersion forKey:key];

        [[NSUserDefaults standardUserDefaults] synchronize];

    }

}

@end

 然后在PJXPushGuideView.xib中实现控件布局

引导页实现代码--iOS