折旧的NSNibLoading方法的替换(loadNibFile:,loadNibNamed:等)？

Question

我发现NSBundle中的NSNibLoading方法:

+[NSBundle loadNibFile:externalNameTable:withZone:]
+[NSBundle loadNibNamed:owner:]
-[NSBundle loadNibFile:externalNameTable:withZone:]

已经在10.8中被标记为已弃用 - 在10.8及更高版本中加载笔尖的正确方法是什么？

我想在我的应用程序创建一个自定义纸张,我必须创建NSWindowController具有initWithWindowNibName自定义纸张？

Answer 1

如果您的应用程序将支持Lion,则loadNibNamed:owner:topLevelObjects:不会触发,并且在Lion上运行时您将获得异常(无法识别的选择器).经过一番搜索,我想出了这个:

    // loadNibNamed:owner:topLevelObjects was introduced in 10.8 (Mountain Lion).
    // In order to support Lion and Mountain Lion +, we need to see which OS we're
    // on. We do this by testing to see if [NSBundle mainBundle] responds to
    // loadNibNamed:owner:topLevelObjects: ... If so, the app is running on at least
    // Mountain Lion... If not, then the app is running on Lion so we fall back to the
    // the older loadNibNamed:owner: method. If your app does not support Lion, then
    // you can go with strictly the newer one and not deal with the if/else conditional.

    if ([[NSBundle mainBundle] respondsToSelector:@selector(loadNibNamed:owner:topLevelObjects:)]) {
        // We're running on Mountain Lion or higher
        [[NSBundle mainBundle] loadNibNamed:@"NibName"
                                      owner:self
                            topLevelObjects:nil];
    } else {
        // We're running on Lion
        [NSBundle loadNibNamed:@"NibName"
                         owner:self];
    }

如果你真的想要使用topLevelObjects:&arrayMountain Lion +,并且你也想支持Lion,看起来你需要依赖于loadNibFile:externalNameTable:withZone :(可用作类和实例方法)用于Lion条件(我可能错了这个).我得到的印象loadNibNamed:owner:topLevelObjects:是为了取代这个而创建的.

我还在其他地方读到,当使用较新的loadNibNamed:owner:topLevelObjects:工作表时,你应该取消选中工作表(窗口)的"关闭后释放".关闭工作表时应该注意这一点:

[self.sheet close];
self.sheet = nil;

如果你打开一个非模态窗口,我不确定应该对该复选框做些什么.有任何想法吗？

Answer 2

本NSBundle类方法loadNibNamed:owner:是在OS X v10.8过时,
loadNibNamed:owner:topLevelObjects:是不是和意见的文件状态原因:

与遗留方法不同,对象遵循标准的可可内存管理规则; 有必要通过使用IBOutlets或保持对数组的引用来保持对它们的强引用,以防止取消分配nib内容.