我有一个带有自定义视图的NSMenuItem。但是,当我想更新菜单中的第一行时,它会将内容添加到xib文件中,而不是像我设置的那样。
我的代码: AppDelegate.m:
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
_helper = [[Helper alloc] init];
statusItem = [[NSStatusBar systemStatusBar] statusItemWithLength:NSVariableStatusItemLength];
[statusItem setMenu:self.statusMenu];
[statusItem setTitle:@"GravAccount"];
[statusItem setHighlightMode:YES];
_gravatarLoader = [[GravatarLoader alloc] initWithTarget:self andHandle:@selector(setGravatarImage:)];
// Get email address
_email = [_helper getEmailAddress];
if (_email != nil)
{
[_gravatarLoader loadEmail:_email withSize:50.0];
}
}
- (void)setGravatarImage:(NSImage*)image
{
NSLog(@"Image loaded!");
GravatarMenuItem *menuItem = [[GravatarMenuItem alloc] initWithNibName:@"GravatarMenuItem" bundle:nil];
[menuItem.label setTitle:_email];
[menuItem.imageView setImage:image];
NSLog(@"Email: %@", _email);
NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""];
[item setView:menuItem.view];
[self.statusMenu removeItemAtIndex:0];
[self.statusMenu insertItem:item atIndex:0];
}
GravatarMenuItem.h:
#import <Cocoa/Cocoa.h>
@interface GravatarMenuItem : NSViewController
@property (nonatomic, strong) IBOutlet NSImageView *imageView;
@property (nonatomic, strong) IBOutlet NSTextFieldCell *label;
@end
出口链接在文件所有者的XIB文件中。
这是结果: 经度:
2012-03-09 16:57:24.314 appName[51158:403] Image loaded!
2012-03-09 16:57:24.316 appName[51158:403] Email: Paul@******.se
结果:
答案 0 :(得分:5)
当你这样做时:
GravatarMenuItem *menuItem = [[GravatarMenuItem alloc] initWithNibName:@"GravatarMenuItem" bundle:nil];
它只创建视图控制器。它实际上并没有从笔尖加载视图。当您访问属性时,它们很可能是nil
,因为视图尚未加载(并且尚未建立连接)。
如果您将代码更新为以下内容,则一切正常:
GravatarMenuItem *menuItem = [[GravatarMenuItem alloc] initWithNibName:@"GravatarMenuItem" bundle:nil];
[menuItem view]; // load the view from the nib
[menuItem.label setTitle:_email];
[menuItem.imageView setImage:image];