macos 从 NSTextField 获取值
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Get value from NSTextField
提问by anakin
I have an NSTextFieldand I need to get the field's value into a variable. What's the appropriate method?
我有一个NSTextField，我需要将该字段的值放入一个变量中。什么是合适的方法？
回答by toholio
For an NSStringyou would use:
对于NSString您将使用的：
NSString *myString = [theTextField stringValue];
For an intyou would use:
对于int您将使用的：
int myInt = [theTextField intValue];
There are many other methods for getting the value from a control. Have a look at the NSControlreference for more info, under the "Getting and Setting the Control's Value" section.
还有许多其他方法可以从控件中获取值。NSControl在“获取和设置控件的值”部分下查看更多信息的参考。
Here's a list:
这是一个列表：
doubleValuefloatValueintValueintegerValueobjectValuestringValueattributedStringValue
doubleValuefloatValueintValueintegerValueobjectValuestringValueattributedStringValue
回答by Stanley
Swift 3.x Version:
斯威夫特 3.x 版本：
myField.stringValue
回答by NilObject
[myField stringValue]
[myField stringValue]
NSTextFieldinherits from NSControl, and NSControldefines the stringValue/setStringvalue:methods.
NSTextField继承自NSControl，并NSControl定义stringValue/setStringvalue:方法。
回答by The Cappy
Also:
还：
Say you have an object (MyObject) that wants to be be notified when someone types into a NSTextField. In the .h file, MyObjectshould declare it conforms to NSTextFieldDelegate, as in...
假设您有一个对象 ( MyObject)，它希望在有人输入NSTextField. 在 .h 文件中，MyObject应声明它符合NSTextFieldDelegate，如...
@interface MyObject : NSObject <NSTextFieldDelegate>
Then you set MyObject as the delegate of the NSTextField
然后将 MyObject 设置为 NSTextField
[myTextField setDelegate:myObject]
[myTextField setDelegate:myObject]
Now, you can find out when something happens in the textfield by implementing methods in MyObject like:
现在，您可以通过在 MyObject 中实现方法来找出文本字段中何时发生的事情，例如：
-(void)controlTextDidEndEditing:(NSNotification *)aNotification;
-(void)controlTextDidChange:(NSNotification *)aNotification;
-(void)controlTextDidBeginEditing:(NSNotification *)aNotification;
