sdk | 易学教程

Writing iOS7 code that compiles against iOS 6 Base SDK

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问题 We have an iOS app on-sale now, and we're developing the iOS 7 version on XCode 5 DP using the same code base. We really need to release an update right now for existing iOS 5/6 customers but, of course, when we re-load the project into XCode 4, it complains about non-existing properties since the Base SDK then becomes iOS6, not 7: // Only run this bit on iOS 7 if ([self respondsToSelector:@selector(setFooForExtendedLayout:)]) { self.fooForExtendedLayout = UIFooEdgeLeft | UIFooEdgeRight; }

linux 平台安装ionic开发调试编译环境（Android)

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> linux版本:centos 6.5 提前准备好http proxy: 1.http_proxy=http://x.x.x.x:58989 2.备选的http proxy: sdk.gdgshanghai.com 8000 先安装node.js,需要pyhton 2.6以上 # cat /etc/system-release CentOS release 6.5 (Final) # locale LANG=en_US.UTF-8 # wget https://nodejs.org/dist/v0.12.7/node-v0.12.7.tar.gz # tar zxvf node-v0.12.7.tar.gz # cd node-v0.12.7 # ./configure --prefix=/usr # make # make install 安装完毕 # npm --version 2.11.3 ///////////////////////////////////// 开始npm,如果npm安装出现错误或者超时等等,可能需要挂http proxy,或者安装cnpm使用国内镜像站使用http proxy方法命令后加 --proxy http://server:port 即可安装cnpm的方法: npm

to update Andrioid SDK Tools to revision 15

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> According to http://developer.android.com/sdk/android-4.0.3.html ------------------------------------------ The Android 4.0.3 API is assigned an integer identifier— 15 —that is stored in the system itself. This identifier, called the "API level", allows the system to correctly determine whether an application is compatible with the system, prior to installing the application. To use APIs introduced in Android 4.0.3 in your application, you need compile the application against an Android platform that supports API level 15 or higher. Depending on your needs,

好记性不如烂笔头

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连续几天同事问了好多问题，我都只能回答说我曾经看过这方面的文章，可以通过什么什么方式实现，可是同事问，那你再哪里看见这个文章的，给我看看如何？我傻了眼，连一个关键字都想不起来，怪自己做笔记的习惯给丢了。今天同事问的问题是：他想做一个SQL设计器，上面当然有一些描述表的控件可以拖动，还可以通过拖动建立关联，象这样：这个东西难点在绘制折线，如果绘制直线也可以，同样还是存在如何计算你的直线被鼠标击中。其实这是一个典型的图型化设计需求，我有影响我曾经下载并试用过一个开源的项目，是C#写的，他的DEMO程序就演示了工作流、类设计器、Visio等应用。可是我今天花了很长时间也没有找到他。另外一个印象是前一个月Visual Studio打开的新闻中，我看过一个使用架构师版自定义业务设计器的讲座，还是中文的，作者讲述了如何使用SDK创建节点、图形和连接点等概念，并演示了独立于VS的设计器界面。可是我还是找不到他了。最终的结果是只知道第二个方案的E文SDK，他就是：Domain-Specific Language Tools，地址在： http://msdn2.microsoft.com/en-us/library/aa396774.aspx ，本人E文不好，所在还需要些时间研究，况且现在还要努力编写2.0平台的SDK文章。最后的总结就是：好记性不如烂笔头来源： https://www

Windows.Security.Cryptography and Windows Phone 8 SDK?

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问题 today i installed the new windows phone 8 sdk (w8phone sdk)... tried to include some of my base classes from windows 8 apps... same core they say... but whoops? no Windows.Security.Cryptography ? I used the SymmetricKeyAlgorithmProvider for end-to-end encryption of serialized data with WCF Services. (http://msdn.microsoft.com/en-us/library/windows/apps/xaml/br241537.aspx) Seems using .NET Framework Encryption is quite proprietary to the platforms/devices. Anyone some advises for same

How to control a camera with Delphi

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问题 A Delphi programm should make produkt photos with a Nikon D5000AF SDX. The only commands I need are "make a photo", "get me the photo". Which library or API can help me? 回答1: @Heinz, to control a device you must use an SDK, which must be supplied by the manufacturer of the device. from the nikon site : ....We are offering Library Programs and Command API Specifications for software applications that offer remote control functions for Nikon digital-SLR cameras connected to a computer. When

Xcode 5.0 编译低版本app

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Xcode 5.0 默认的编译环境是iOS7，编译出来的app，安装到iOS7.0版本以上的手机上，会表现出iOS7.0的风格。兼容不太好的应用，布局上可能会因此乱八七糟。如果还不想让app升级到iOS7.0，以保持iOS6.1或以下版本的风格，那么可以这样：下载好iOS6.1 SDK（或其他非iOS7.0 SDK，如果找不到下载路径，可以从之前的低版本的Xcode中拷贝出来），复制到Xcode 5.0目录下，具体路径为： “Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk/” 同样，低版本的模拟器也可以拷贝到： “Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk” 启动Xcode，打开项目，Project Navigator中选择项目，右侧找到Build Settings，在Architectures中的Base SDK，更改为“iOS 6.1” 来源： https://www.cnblogs.com/ihojin/p/xcode5-basesdk.html

Mac SDK: using latest SDK but ensuring backwards compatibility with earlier deployment target

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问题 As always when Apple updates OS X, the latest XCode 4.4 dumps the older (10.6) SDK and I find myself needing to use the 10.7 SDK (or 10.8 I suppose) and setting my deployment target to 10.6 to maintain compatibility. I prefer linking to the older SDK because I know that I cannot by mistake introduce calls to APIs that do not yet exist. Something that I found myself doing regularly when I last tried the inverse approach. What I find myself doing is that I use the code completion feature in

SDK: What is it exactly? How it could be useful?

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问题 SDK: What is it exactly? How it could be useful? Is it necessary for a developer? Thanks 回答1: The acronym SDK stands for Software Development Kit. The term software development kit is generally used to refer to a set of resources made available by a platform vendors to enable development on that particular platform. The contents of an SDK are very much dependent on what is neccessary to give developers in order for them to successfully build software for that platform. Typically an SDK will

Android application icon not showing up

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问题 I've just spent numerous hours constructing an icon for an Android app I'm working on, but can't get it to show up for the app in the emulator. I've put it in res/drawable-hdpi, res/drawable-mdpi, res/drawable-ldpi in the respective sizes as defined in http://developer.android.com/guide/practices/ui_guidelines/icon_design_launcher.html The manifest contains the line: <application android:icon="@drawable/icon" android:label="@string/app_name" android:debuggable="true"> Any ideas as to why it