如何在导航到不同的视图控制器并返回到第一个视图控制器时保留UITextField文本？ [英] How to retain UITextField text when navigating to different view controller and returning back to first view controller?

问题描述

我的第一个视图中有一个包含3个文本字段的登录页面，因为我导航到不同的视图并返回到我的第一个视图（即我在应用程序中登录然后退出该视图）。我希望我的2个文本字段保留它的价值，我应该能够再次登录。
任何人都可以帮忙。

I have a login page having 3 textfield in my first view as i navigate to different view and return back to my first view (i.e i am loggin in application and then logging out of that).I want my 2 textfield to retain its value and I should be able to log in again. Can anyone help please.

推荐答案

你可以使用 NSUserDefaults 对于您可以添加两个对象并在每次进入该视图时获取值，然后您可以显示相同的值。

You can use NSUserDefaults for the same in which you can add two objects and get the values whenever you come to that view and then you can display the same.

-(void)viewWillDisappear:(BOOL)animated{
    [[NSUserDefaults standardUserDefaults] setObject:textUserName.text forKey:@"UserName"];
    [[NSUserDefaults standardUserDefaults] setObject:textPassword.text forKey:@"Password"];
    [super viewWillDisappear:animated];
}

-(void)viewWillAppear:(BOOL)animated{
    textUserName.text = [[NSUserDefaults standardUserDefaults]  objectForKey:@"UserName"];
    textPassword.text = [[NSUserDefaults standardUserDefaults]  objectForKey:@"Password"]
    [super viewWillAppear:animated];
}

这篇关于如何在导航到不同的视图控制器并返回到第一个视图控制器时保留UITextField文本？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！