iPhone启动图片Launch Image能玩出的花儿

最新推荐文章于 2019-03-02 17:33:44 发布

白马斩辰

最新推荐文章于 2019-03-02 17:33:44 发布

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分类专栏： Foundation

本文链接：https://blog.youkuaiyun.com/imanapple/article/details/48155763

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本文详细介绍了iOS应用开发中如何为启动图片文件命名，包括使用指定格式、高分辨率标识符、平台特定修改符、方向特定修改符等，确保应用在不同设备和场景下呈现最佳用户体验。

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Naming Your Launch Image Files
The name of each launch image conveys its purpose and how it is used. It is recommended that you use the following format for launch image filenames:

<basename><usage_specific_modifiers>.png

The portion of the filename is the string that you specify using the UILaunchImageFile key. (If you do not specify the key, iOS uses the string Default for the launch image name.) To the base name, you can add several different types of modifiers:

High-resolution image modifier—Use the@2xmodifier to identify images that are intended for Retina displays.
Platform-specific modifiers—Use the modifiers~iphone or~ipadto specify images targeting a specific size of device.
Orientation-specific modifiers—Use the strings-Landscape, -Portrait, -LandscapeLeft, -LandscapeRight, or -PortraitUpsideDown to specify launch images when the device is in a specific orientation. More specific orientation modifiers take precedence over less-specific orientation modifiers. For example, an image with the -LandscapeLeft modifier takes precedence over an image with the -Landscape modifier when the device is in the correct orientation.
iPhone 5 modifier—Use the string-568hto specify a launch image intended for devices whose screen is 568 points high. Because such devices also have Retina displays, you should also include the @2x modifier in the image name.
URL scheme modifiers—Include the name of your app’s custom URL scheme in launch image names if you want those launch images displayed when your app is launched to open a URL of the specified type. The format of a scheme modifier is-<url_scheme>where < url_scheme > is your custom scheme name. For example, if your app opens URLs of the form myscheme://example.com, you would include -myscheme in your launch image names.

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