Building OpenSocial Apps- P7

Building OpenSocial Apps- P7: Nhà phát triển của Thư viện Series từ Addison-Wesley cung cấphành nghề lập trình với độc đáo, tài liệu tham khảo chất lượng caohướng dẫn về các ngôn ngữ lập trình công nghệ mới nhất và họsử dụng trong công việc hàng ngày của họ. Tất cả các sách trong thư viện của Nhà phát triển được viết bởichuyên gia công nghệ các học viên những người có kỹ năng đặc biệt tại các tổ chứcvà trình bày thông tin một cách đó là hữu ích cho các lập trình viên khác....
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Building OpenSocial Apps- P7 274 Chapter 12 App Life Cycle Managing Your App Once your app is live, you can hide it, publish changes to the code, or delete it. Hiding and Deleting an App When you hide an app, you change the status of the application to “Hidden.”This only stops your app from showing up in search results in the apps gallery (http://apps.myspace.com). It does not hide the app from users who already have the app installed. Warning The only way to hide an app from users who already have the app installed or force an uninstall is to delete the app. Hiding the app does not hide it from existing users. If you want to delete an app, click Delete.You will be prompted with a confirmation. Click Yes and the app will be deleted. Making Changes to a Live App (Multiple Versions) Once your app has gone live, there are two versions of it: n Development version n Live version When you click Edit App Source on a live app, you see two links: Dev App and Live App at the bottom of the screen (as shown in Figure 12.7). Figure 12.7 Dev App and Live App selection options.Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Managing Your App 275 Figure 12.8 Note the &appvers=dev at the end of the URL in the address bar. Your Live version can’t be edited directly.You must edit your source code on the Development version. Any changes are immediately reflected in the Development version and don’t appear in the Live version until the app is republished.When you’re testing or viewing your Development version, you should see &appvers=dev at the end of the app’s URL, as shown in Figure 12.8. So, if you ever want to see the Development version of your app, just append &appvers=dev to the end of the query string for the surface you’re currently viewing. Republishing a Live App You’ve changed your code, tested it, made some improvements, and you’re ready to release version 1.1; now what? Click Publish Changes to start the review process over again. Changing the App Profile/Landing Page When users discover your app in the app gallery or through a friend’s page, they’ll click on your app link and be taken to your app Profile page.This is like a landing page, and it contains that magical button that you want everyone to click: Add This App. To see what your app’s Profile looks like, go to the Canvas page and click More Info at the top of the page. Now, do you see a boring default surface with little more than the basic details? Or something that looks more like the landing page shown in Figure 12.9? This is one area that developers often overlook, but it’s very important.The app’s Profile is the first introduction of a potential user to your app, so you should try to sell your app here in order to turn a potential user into a user.You’ll notice that the large professional app development companies have polished-looking app Profile pages.Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. 276 Chapter 12 App Life Cycle Figure 12.9 App Profile page for iLike (http:/myspace.com/ilike), a popular application. Common tweaks include making the Add This App button larger, adding branding, put- ting up screen shots of the app in action, and just generally making the page more appeal- ing to prospective installs. Editing your app Profile page is similar to the way users “bling out” their MySpace Profile pages, and you’re under the same restrictions.That means no JavaScript, but you can modify CSS and add image, anchor, and various style tags, like bold. To edit the app Profile page, you must first log in to MySpace as the app (not as the developer), click Edit Profile, then click the CSS tab. Inside the CSS box you can put any valid CSS.You can hook your CSS styles into existing elements on the page using their IDs or element types. For example, the Add This App button has an ID of profile_appinstall_button, so you can style it using the # CSS selector. Some other useful element IDs ...