IT牛人博客聚合

Great product design involves thinking about what features to prioritize, planning the user flow from screen to screen, getting user feedback and lots more, but at the end of the day, someone is going to be in Photoshop pushing pixels. The final visual design of a digital interface isn't going to design itself, and whe

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I'm great at starting things, not so great at finishing them. I get really excited about something, work on it intently for weeks or a month or two, then the next cool project catches my eye and I shift over to that leaving the old project to sit forever unfinished.

Near the end of last summer I had an idea of what I

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Download TweetView.xcodeproj and then follow along below.

One of the challenges of creating a Twitter app for Mac is exactly how to build the timeline interface. Not the design, although that's very challenging as well, but the implementation of the timeline since it's very important to the overall stability of your a

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A design can be wrong. The entire thing can be wrong, parts can be wrong, or even a tiny, 10x10 pixel area can be wrong. Not, "I think it's good but it needs improvement" but flat-out wrong. 1 + 1 = 3 wrong. A spelling mistake in a book wrong. A syntax error in a code file wrong. It's not an opinion, it's not a matter

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Digital Post, my newspaper app for the iPad, uses a number of custom user interface elements to build out the full user experience. One of these custom components is a horizontal topic selector that you can swipe and also tap to select individual topics.

Original Concept

Facebook for iPhone was one of the first apps

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上节回顾 – 后台管理 静态文件
常见错误
    我在写这篇博客时, 发生过好多次错误, 当然后来调好了才敢把代码贴出来. 不过讨论一下这些错误也是必要的. django 服务器在发生错误时 (当然不能是 python 语法错误, 那样谁也救不了), 会在页面上输出错误简报, 调用栈, 上下文变量以及请求信息等帮助调试错误. 下面就来折腾一下服务器吧.
MultiValueDictKeyError 请求数据不存在
    打开 guestbook/home/views.py 修改从请求中获取信息的语句
   &

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上节回顾 – ORM 和数据库

创建 admin 应用

    打开 guestbook/urls.py 仔细研究一下注释, 会看到有几行写着, 取消注释来激活 admin. django 的 admin 应用是一个非常不错的后台. 现在就来开启它吧

from django.conf.urls.defaults import *

# Uncomment the next two lines to enable the admin:

from django.contrib import admin

admin.autodiscover()

urlpatterns = pattern

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上节回顾 – 配置, 基本视图和逻辑

数据库配置

    仍然在 settings.py 中, 找到 DATABASE_ 开头的项目. 现在用 sqlite3 作为数据库, 它已经集成在 python 2.5 以后的版本中, 这样就省去了安装配置的环节. 现在修改这些项目

DATABASE_ENGINE = 'django.db.backends.sqlite3'

DATABASE_NAME = 'guestbook/db_file'

这里 DATABASE_NAME 同样需要给出文件的绝对路径, 原理跟之前模板目录那个一样, 如果不能确定每次的工作目

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安装

    根据 django 官方文档, 需要 python 2.3 或更高版本. 不过按现在的 python 普及程度, 想必大家的机器上都有 python 2.5 或 2.6 了. 我的操作系统是 ubuntu 9.10, 自带的是 2.6 版本.

    debian 用户安装

# apt-get install python-django

    ArchLinux 用户安装

# pacman -S django

或者在官方站点下载源代码安装

http://www.djangoprojec

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The underlying secret to beautiful user interface design is realism: making 2D objects on your screen appear to sit in 3D space with volume, surface properties and undulations that might appear in real life. These faux 3D objects have highlights and shadows just like objects on your desk might have, and they have textu

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Apple's paradigm for indicating network connectivity is nicely-detailed globe icon with crisscrossing wires across it — you can see it in the System Preferences for Network settings. Wolfgang recently rejuvenated this UI analogy in his work on LittleSnapper's interface. I thought it'd be fun to do my version of

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When I first started designing for the web (don't ask how long ago that was!) I was constantly finding websites that had a particular "look" that I didn't know how to reproduce. When you're a flat-out beginner you don't have anything in your mental repertoire to pull from — techniques and concepts that you can do

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One of my favorite pieces of UI design on the iPhone is the toggle switch that lets you turn something on or off. The design and the smooth flow between the two states is perfect. I thought it'd be fun to emulate this element in Photoshop as a quick tutorial.

Step 1: Design The Button

For maximum flexibility, I'm goi

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