NSAlert in XCode 7

Question

我想更新10.8到10.11的代码。这是原始代码。

            NSAlert *alertSheet = [NSAlert alertWithMessageText:@"Message Text." defaultButton:@"OK" alternateButton:nil otherButton:nil informativeTextWithFormat:@"Informative text PJ%@-%@ with more text.", self.projectNumber,self.projectName];
        [alertSheet setAlertStyle:NSCriticalAlertStyle];
        [alertSheet beginSheetModalForWindow:self.window modalDelegate:nil didEndSelector:nil contextInfo:nil];

有些代码是不推荐的。这是我到目前为止所做的，但不起作用。

            NSAlert *alertSheet = [[NSAlert alloc]init];
        [alertSheet setMessageText:@"Message Text."];
        [alertSheet setInformativeText:@"Informative text PJ%@-%@ with more text.", self.projectNumber,self.projectName];
        [alertSheet beginSheetModalForWindow:self.windowPreferences completionHandler:nil];

Answer 1

informativeText不是可变的(从来没有)

[alertSheet setInformativeText:[NSString stringWithFormat:@"Informative text PJ%@-%@ with more text.",  self.projectNumber,self.projectName]];

您也可以使用点符号。

alertSheet.informativeText = [NSString stringWithFormat...