保持登录iPhone应用程序的选项

Question

我需要在我的iPhone应用程序中实现"保持登录状态"或"记住我"复选框.我该如何实现？如何存储用户ID？

非常感谢帮助,

谢谢,VKS

Answer 1

@VKS

• 1

  -(void)autologin:(id)sender
  {
      ischecked =!ischecked;
      UIButton *check = (UIButton*)sender;
      if(ischecked == NO)
          [check setImage:[UIImage imageNamed:@"checkbox1.png"] forState:UIControlStateNormal];
      else 
          [check setImage:[UIImage imageNamed:@"checkbox-pressed.png"] forState:UIControlStateNormal];
  }
  

• 2

  if(ischecked == YES)
  {
      NSUserDefaults *standardUserDefaults = [NSUserDefaults standardUserDefaults];
  
      [standardUserDefaults setObject:mainDelegate.uName forKey:@"username"];
      [standardUserDefaults setObject:mainDelegate.uPassword forKey:@"password"];
  
      [standardUserDefaults synchronize];
  }
  

并用于检索密码/用户名

• 3

  if(isChecked == YES)
  {
      NSUserDefaults *standard = [NSUserDefaults standardUserDefaults];
      NSString *pass = [standard objectforkey:@"password"];
      NSString *user = [standard objectforkey:@"username"];
  }
  if ([pass == nil] || [user == nil])
  {
      // Show the alert view that user is not valid.
  }
  else 
  {
      // User is valid.
  }