判断是否第一次登陆app,具体方法如下:
if (![[NSUserDefaults standardUserDefaults]boolForKey:@"firstLaunch"]) {
NSLog(@"first time to launch ");
[[NSUserDefaults standardUserDefaults]setBool:YES forKey:@"firstLaunch"];
[[NSUserDefaults standardUserDefaults]setBool:NO forKey:@"everLaunch"];
}else {
NSLog(@"ever launched ");
[[NSUserDefaults standardUserDefaults]setBool:YES forKey:@"everLaunch"];
}
作者:稻草人11223