我正在关注 THIS来自苹果的指南,但它并没有真正正常工作。
基本上,我正在尝试通过自定义 WindowController 类向 Window 中的 NSTextField 添加超链接。我能够让超链接解决一些问题:
- 当我将鼠标悬停在超链接上时,我得到一个“I bean”(指示您可以选择文本的光标)。我想要一只通常出现在超链接上的手
- 当我点击超链接文本时,它会在我的浏览器中成功打开链接,但随后会更改文本大小和格式(例如,它不再居中,恢复为默认值)。不过,现在当我将鼠标悬停在它上面时,我得到了手。
经过一些实验后,我发现最初的字符串格式(例如大小、单击之前的字体)是我在其中创建标签的 .xib 文件的格式。单击后,它会变为一些我似乎无法以任何方式影响的默认字体。不过,超链接仍然存在。
部分代码如下:
AboutWindowController.h
#import "AboutWindowController.h"
@interface AboutWindowController ()
@end
@implementation AboutWindowController
- (id)initWithWindow:(NSWindow *)window
{
self = [super initWithWindow:window];
if (self) {
// Initialization code here.
}
return self;
}
- (void)windowDidLoad
{
[super windowDidLoad];
[self.testLabel setAllowsEditingTextAttributes:YES];
[self.testLabel setSelectable:YES];
NSMutableAttributedString* string1 = [[NSMutableAttributedString alloc] init];
NSString* inString = @"Apple Computer";
NSURL* aURL = [NSURL URLWithString:@"www.google.com"];
NSMutableAttributedString* attrString = [[NSMutableAttributedString alloc] initWithString: inString];
NSRange range = NSMakeRange(0, [attrString length]);
[attrString beginEditing];
[attrString addAttribute:NSLinkAttributeName value:[aURL absoluteString] range:range];
// make the text appear in blue
[attrString addAttribute:NSForegroundColorAttributeName value:[NSColor blueColor] range:range];
// next make the text appear with an underline
[attrString addAttribute:
NSUnderlineStyleAttributeName value:[NSNumber numberWithInt:NSSingleUnderlineStyle] range:range];
[attrString endEditing];
[string1 appendAttributedString: attrString];
[self.testLabel setAttributedStringValue:string1];
[self.testLabel setFont:[NSFont fontWithName:@"Helvetica" size:20]];
}
@end
AboutWindowController.h
#import <Cocoa/Cocoa.h>
@interface AboutWindowController : NSWindowController
@property (weak) IBOutlet NSTextField *testLabel;
@end
.xib 非常简单:它是一个带有标签的窗口,我正确地将标签链接到 .h 文件(我相信)
感谢您的帮助。我会尝试定期回来查看以回答任何问题/说明。编辑:请查看我对比克拉姆回答的评论,了解我的最新情况。
最佳答案
您遇到的问题是 NSMutableAttributedString
试图强制其格式化,而 NSTextField
正在强制其自己的格式。
我的主 XIB 只有菜单,我的 windowController XIB 有一个 Label NSTextField
。
窗口 Controller :
@interface TFTWindowController : NSWindowController
@property (weak) IBOutlet NSTextField *testLabel;
@end
@implementation TFTWindowController
- (id)initWithWindow:(NSWindow *)window
{
self = [super initWithWindow:window];
if (self) {
// Initialization code here.
}
return self;
}
- (void)awakeFromNib {
}
- (void)windowDidLoad
{
[super windowDidLoad];
[self.testLabel setAllowsEditingTextAttributes:YES];
[self.testLabel setSelectable:YES];
NSMutableAttributedString* string1 = [[NSMutableAttributedString alloc] init];
NSString* inString = @"Apple Computer";
NSURL* aURL = [NSURL URLWithString:@"www.google.com"];
NSMutableAttributedString* attrString = [[NSMutableAttributedString alloc] initWithString:inString];
NSRange range = NSMakeRange(0, [attrString length]);
[attrString beginEditing];
[attrString addAttribute:NSLinkAttributeName value:[aURL absoluteString] range:range];
// make the text appear in blue
[attrString addAttribute:NSForegroundColorAttributeName value:[NSColor blueColor] range:range];
// next make the text appear with an underline
[attrString addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInt:NSSingleUnderlineStyle] range:range];
[attrString addAttribute:NSFontAttributeName value:[NSFont fontWithName:@"Helvetica" size:20] range:range];
[attrString endEditing];
[string1 appendAttributedString: attrString];
[self.testLabel setAttributedStringValue:string1];
[self.testLabel setFont:[NSFont fontWithName:@"Helvetica" size:20]];
}
@end
应用委托(delegate):
@interface TFTAppDelegate : NSObject <NSApplicationDelegate>
@property(nonatomic, strong)TFTWindowController *windowController;
@end
@implementation TFTAppDelegate
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
// Insert code here to initialize your application
self.windowController = [[TFTWindowController alloc] initWithWindowNibName:@"TFTWindowController"];
[_windowController showWindow:nil];
}
关于objective-c - 单击时更改/重置 TextField 中的 NSAttributedString,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24318032/