Animated progress view with CAGradientLayer(带翻译)  Modern software design is getting flatter and thinner all the time. Another trend that follows suit is the thin, one pixel progress bar that you see at the top of websites and apps. You’ve seen in it…

原文网址:使用CAGradientLayer的动画精度条View Modern software design is getting flatter and thinner all the time. Another trend that follows suit is the thin, one pixel progress bar that you see at the top of websites and apps. You’ve seen in it on Medium blogs,…

1. Terms and conditions(法律与条款) 1.1  As a developer of applications for the App Store you are bound by the terms of the Program License Agreement (PLA), Human Interface Guidelines (HIG), and any other licenses or contracts between you and Apple. The f…

Description Moscow is hosting a major international conference, which is attended by n scientists from different countries. Each of the scientists knows exactly one language. For convenience, we enumerate all languages of the world with integers from…

In this lesson we will use Animated.timing to animate the opacity and height of a View in our React Native application. This function has attributes that you can set such as easing and duration. import React, {Component} from 'react'; import {Text, V…

Working with NSURLSession: AFNetworking 2.0   简单翻译,有很多错误,看官无法理解处请英文原文对照. http://code.tutsplus.com/tutorials/working-with-nsurlsession-afnetworking-20--mobile-22651 by Bart Jacobs3 Feb 2014 In the previous installments of this series, we've taken a cl…

iOS客户端应用架构看似简单,但实际上要考虑的事情不少.本文作者将以系列文章的形式来回答iOS应用架构中的种种问题,本文是其中的第二篇,主要讲View层的组织和调用方案.下篇主要讨论做View层架构的设计的一些心法. 本门心法 重剑无锋,大巧不工. ---- <神雕侠侣> 这是杨过在挑剑时,玄铁重剑旁边写的一段话.对此我深表认同.提到这段话的目的是想告诉大家,在具体做View层架构的设计时,不需要拘泥于MVC.MVVM.VIPER等规矩.这些都是招式,告诉你你就知道了,然后怎么玩都可以.但是心…

当我们开始设计View层的架构时,往往是这个App还没有开始开发,或者这个App已经发过几个版本了,然后此时需要做非常彻底的重构. 一般也就是这两种时机会去做View层架构,基于这个时机的特殊性,我们在这时候必须清楚认识到:View层的架构一旦实现或定型,在App发版后可修改的余地就已经非常之小了.因为它跟业务关联最为紧密,所以哪怕稍微动一点点,它所引发的蝴蝶效应都不见得是业务方能够hold住的.这样的情况,就要求我们在实现这个架构时,代码必须得改得勤快,不能偷懒.也必须抱着充分的自我怀疑态度,…

想对PickerView进行操作,只能在代码中操作. 下面 ,再添加三个label组件,然后将所有组件配置到代码中(看代码),然后要实现对PickerView的操作,就要实现它的DataSource协议和他的代理,在右边组件的链接栏,Outlets有两个选项,把他们都链接到控制器上: 好,我们的数据从哪里来? 我们在代码的控制器中定义几个数组,并且手工加上协议,然后会提示ViewController没有遵守协议UIPickerViewDataSource,因为我们没有实现: 下面我们就来实现协议…

视图切换,没有NavigationController的情况下,一般会使用presentViewController来切换视图并携带切换时的动画, 其中切换方法如下: – presentViewController:animated:completion: 弹出,出现一个新视图 可以带动画效果,完成后可以做相应的执行函数经常为nil– dismissViewControllerAnimated:completion:退出一个新视图 可以带动画效果,完成后可以做相应的执行函数经常为nil 切换动画…