概览
字符串如何遍历?
字符串如何操作(增删改)?
字符串如何比较?
本文主要关注的就是字符串的上面3点操作
环境说明
macOS Sierra 10.12.2
Xcode Version 8.2.1
启动图的价值 ?
如何设置启动图 ?
常见的启动图形式 ?
A launch screen appears instantly when your app starts up. The launch screen is quickly replaced with the first screen of your app, giving the impression that your app is fast and responsive. The launch screen isn’t an opportunity for artistic expression. It’s solely intended to enhance the perception of your app as quick to launch and immediately ready for use. Every app must supply a launch screen.
启动屏主要是为了优化用户体验的
在启动屏上显示文字或广告的行为在Apple的设计规范上并不提倡
在iOS9以下,可以用iTools,PP助手等工具导出其他应用的iPa,但是iOS9开始就不行了
搜索后,根据ios9越狱后如何备份ipa?这篇帖子,尝试用mac版的PP助手在越狱的5s(9.3.2)上导出iPa
1 | struct objc_class { |
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