Question

提前感谢您的帮助。

问题：'@ selector（doSomething）'不是要求' - （void）doSomething：（id）sender'Methods

我试图让状态栏中的项目调用doSomething方法但是当我点击它时似乎没有任何事情发生。

我做错了什么？

AppDelegate.m

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    sync_control *controlObject = [[sync_control alloc] init];
    [controlObject startSyncApp];
}

SyncControl.m

    NSStatusBar *syncStatusBar;
    NSStatusItem *syncStatusItem;

- (void) startSyncApp
{
    syncStatusBar = [NSStatusBar systemStatusBar];
    syncStatusItem = [syncStatusBar statusItemWithLength:NSSquareStatusItemLength];

    NSImage *statusItemImage = [NSImage imageNamed:@"1.png"];
    statusItemImage.template = YES;
    statusItemImage.size = NSMakeSize(18.0,18.0);

    [syncStatusItem setImage:statusItemImage];
    [syncStatusItem setHighlightMode:YES];

    [syncStatusItem setMenu:[self waitingState:Nil]]; 
}


- (NSMenu *)waitingState:(id)sender
{
    NSMenu *localMenu;

    //Create the NSMenu
    localMenu = [[NSMenu alloc] initWithTitle:@"Sync"];
    [localMenu setAutoenablesItems:NO];
    [localMenu insertItemWithTitle:@"Do something now..." action:@selector(doSomething:) keyEquivalent:@"" atIndex:1];

    return localMenu;
}


- (void)doSomething:(id)sender
{
    NSLog(@"It works!");
}

Answer 1

问题可能是菜单项有一个动作选择器，但没有目标。试试这个：

NSMenuItem *someItem = [localMenu insertItemWithTitle:@"Do something now..." action:@selector(doSomething:) keyEquivalent:@"" atIndex:0];
[someItem setTarget: self];

NSMenu - @selector（doSomething）点击它时没有做任何事情

1 个答案: