1.

NSUserDefaults* userDefaults = [NSUserDefaultsstandardUserDefaults];

if(![userDefaultsobjectForKey:@"miuuserfirst"]) {

UIImageView*tipsImageView = [[UIImageViewalloc]initWithFrame:CGRectMake(0, -64,kScreen_Width,kScreen_Height)];

tipsImageView.userInteractionEnabled=YES;

tipsImageView.tag=1;

UITapGestureRecognizer*tap = [[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(changetipsImage:)];

[tipsImageViewaddGestureRecognizer:tap];

[tipsImageViewsetImage:[UIImageimageNamed:@"leadd3.jpg"]];

[self.viewaddSubview:tipsImageView];

self.tipsImageView= tipsImageView;

}

- (void)changetipsImage:(UITapGestureRecognizer*)tap

{

tap.view.tag++;

if(tap.view.tag>2) {

[self.tipsImageViewremoveFromSuperview];

self.tipsImageView=nil;

[[NSUserDefaultsstandardUserDefaults]setObject:@"icandoit"forKey:@"miuuserfirst"];

}else{

[self.tipsImageViewsetImage:[UIImageimageNamed:[NSStringstringWithFormat:@"leadd%ld.jpg",tap.view.tag]]];

NSLog(@"你调用了么");

}

}