如何获得UISwitch的价值？ [英] How to get the value of a UISwitch?

问题描述

我是一个新手的iOS程序员，我有一个问题。

I am a newbie iOS programmer and I have a problem.

我目前使用iOS Core Data，我的问题是，我想通过取一个 UISwitch 。

I currently work on iOS Core Data and my problem is that I want to insert data into a boolean attribute to a database by taking the value of a UISwitch.

问题是，我不知道它是什么方法我必须调用（例如.text做同样的事情，但对于UITextField）。我做了一个小的谷歌搜索，但没有结果。这里是一些代码：

The problem is that i don't know what it the method i have to call (e.g .text does the same thing but for UITextField). I have done a small google search but no results. Here is some code:

[newContact setValue:howMany.text forKey:@"quantity"]; 
[newContact setValue:important.??? forKey:@"important"]; 

howmany是一个文本字段，重要的是一个UISwitch

howmany is a textfield, important is a UISwitch

推荐答案

保存

[newContact setObject:[NSNumber numberWithBool:important.on] forKey:@"important"]; 

检索

BOOL on = [[newContact objectForKey:@"important"] boolValue];

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