Xcode 无法识别 NSLabel
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Xcode doesn't recognize NSLabel
提问by user1855952
I'm trying to create a NSLabel for my osx app however Xcode is not recognizing the type "NSLabel" as valid and is suggesting I try "NSPanel" instead.
我正在尝试为我的 osx 应用程序创建一个 NSLabel，但是 Xcode 没有将“NSLabel”类型识别为有效，并建议我尝试使用“NSPanel”代替。
In the header file I have the following imports:
在头文件中，我有以下导入：
#import <Cocoa/Cocoa.h>
#import <AppKit/AppKit.h>
How do I fix this? Is there another file I need to import?
我该如何解决？我需要导入另一个文件吗？
回答by DrummerB
There is no label class (NSLabel) on OS X. You have to use NSTextFieldinstead, remove the bezel and make it non editable:
NSLabelOS X 上没有标签类 ( )。您必须NSTextField改用，移除边框并使其不可编辑：
[textField setBezeled:NO];
[textField setDrawsBackground:NO];
[textField setEditable:NO];
[textField setSelectable:NO];
回答by Axel Guilmin
I had the same question, following DrummerB advice I created this NSLabelclass.
我有同样的问题，按照 DrummerB 的建议我创建了这个NSLabel类。
Header
标题
//
// NSLabel.h
//
// Created by Axel Guilmin on 11/5/14.
//
#import <AppKit/AppKit.h>
@interface NSLabel : NSTextField
@property (nonatomic, assign) CGFloat fontSize;
@property (nonatomic, strong) NSString *text;
@end
Implementation
执行
//
// NSLabel.m
//
// Created by Axel Guilmin on 11/5/14.
//
#import "NSLabel.h"
@implementation NSLabel
#pragma mark INIT
- (instancetype)init {
self = [super init];
if (self) {
[self textFieldToLabel];
}
return self;
}
- (instancetype)initWithFrame:(NSRect)frameRect {
self = [super initWithFrame:frameRect];
if (self) {
[self textFieldToLabel];
}
return self;
}
- (instancetype)initWithCoder:(NSCoder *)coder {
self = [super initWithCoder:coder];
if (self) {
[self textFieldToLabel];
}
return self;
}
#pragma mark SETTER
- (void)setFontSize:(CGFloat)fontSize {
super.font = [NSFont fontWithName:self.font.fontName size:fontSize];
}
- (void)setText:(NSString *)text {
[super setStringValue:text];
}
#pragma mark GETTER
- (CGFloat)fontSize {
return super.font.pointSize;
}
- (NSString*)text {
return [super stringValue];
}
#pragma mark - PRIVATE
- (void)textFieldToLabel {
super.bezeled = NO;
super.drawsBackground = NO;
super.editable = NO;
super.selectable = YES;
}
@end
You'll need to #import "NSLabel.h"to use it, but I think it's more clean.
你需要#import "NSLabel.h"使用它，但我认为它更干净。
回答by eonist
Swift 4.2
斯威夫特 4.2
open class NSLabel: NSTextField {
override init(frame frameRect: NSRect) {
super.init(frame: frameRect)
self.isBezeled = false
self.drawsBackground = false
self.isEditable = false
self.isSelectable = false
}
}
