NSUserDefaults

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/*NSUserDefaults通常用于存储用户偏好设置和登陆注册等信息*/    //取值    [[NSUserDefaults standardUserDefaults]objectForKey:@"night"];    //存值    [[NSUserDefaults standardUserDefaults] setObject:@"yes" forKey:@"night"];//存储数据    NSUserDefaults *userDefault = [NSUserDefaults standardUserDefaults];       [userDefault setObject:@"张三" forKey:@"name"];    [userDefault setInteger:23 forKey:@"age"];    //取出数据    self.navigationItem.title = [[NSUserDefaults standardUserDefaults]objectForKey:@"name"];    NSLog(@"%ld",[[NSUserDefaults standardUserDefaults]integerForKey:@"age" ]);//修改数据    [[NSUserDefaults standardUserDefaults]setObject:@"李四" forKey:@"name"]; //强制存储    /*原因：NSUserDefaults存储数据会发生延迟现象，把数据存储到本地文件中，不是马上就生效，所以会出现娶不到数据现象*/    [[NSUserDefaults standardUserDefaults]synchronize];

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