如何使用默认的iOS图像? [英] How to use default iOS images?

问题描述

我知道如何在iOS应用程序中使用图像.但是我不知道如何使用开发人员网站中提到的默认图像，例如共享或书签图标.

I know how to use images in iOS application. But I don't know how to use default images like share or bookmark icons which are mention in developer site.

我想使用它们.我需要下载这些图像集还是Xcode中可用的图像?

I want to use them. Do I need to download those set of images or those are available in Xcode?

如果我们必须下载它们，我在哪里可以找到那些图标?

If we have to download them, where I can get those icons?

推荐答案

开发人员没有直接访问这些图像的权限.我的意思是，您不能像这样初始化图像对象:

Developers haven't direct access to these images. I mean that you can't initialise image object like this:

UIImage *image = [UIImage imageNamed:@"name_of_system_image"];

但是您可以使用系统类型显示一些图像.例如，您可以使用提供标准图标的系统类型来初始化UIBarButtonItem:
-(id)initWithBarButtonSystemItem:(UIBarButtonSystemItem)systemItem target:(id)target action:(SEL)action

But you can display some of images by using system types. For example you could init UIBarButtonItem with system types that provides standard icons:
- (id)initWithBarButtonSystemItem:(UIBarButtonSystemItem)systemItem target:(id)target action:(SEL)action

UIBarButtonSystemItem提供了以下类型:

UIBarButtonSystemItemDone， UIBarButtonSystemItemCancel，
UIBarButtonSystemItemEdit，
UIBarButtonSystemItemSave，
UIBarButtonSystemItemAdd，
UIBarButtonSystemItemFlexibleSpace，
UIBarButtonSystemItemFixedSpace，
UIBarButtonSystemItemCompose，
UIBarButtonSystemItemReply，
UIBarButtonSystemItemAction，
UIBarButtonSystemItemOrganize，
UIBarButtonSystemItemBookmarks，
UIBarButtonSystemItemSearch，
UIBarButtonSystemItemRefresh，
UIBarButtonSystemItemStop，
UIBarButtonSystemItemCamera，
UIBarButtonSystemItemTrash，
UIBarButtonSystemItemPlay，
UIBarButtonSystemItemPause，
UIBarButtonSystemItemRewind，
UIBarButtonSystemItemFastForward，
UIBarButtonSystemItemUndo，
UIBarButtonSystemItemRedo，
UIBarButtonSystemItemPageCurl

UIBarButtonSystemItemDone, UIBarButtonSystemItemCancel,
UIBarButtonSystemItemEdit,
UIBarButtonSystemItemSave,
UIBarButtonSystemItemAdd,
UIBarButtonSystemItemFlexibleSpace,
UIBarButtonSystemItemFixedSpace,
UIBarButtonSystemItemCompose,
UIBarButtonSystemItemReply,
UIBarButtonSystemItemAction,
UIBarButtonSystemItemOrganize,
UIBarButtonSystemItemBookmarks,
UIBarButtonSystemItemSearch,
UIBarButtonSystemItemRefresh,
UIBarButtonSystemItemStop,
UIBarButtonSystemItemCamera,
UIBarButtonSystemItemTrash,
UIBarButtonSystemItemPlay,
UIBarButtonSystemItemPause,
UIBarButtonSystemItemRewind,
UIBarButtonSystemItemFastForward,
UIBarButtonSystemItemUndo,
UIBarButtonSystemItemRedo,
UIBarButtonSystemItemPageCurl

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