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Social Web Design & Research 社群網站設計 & 研究

Social Web Design & Research 社群網站設計 & 研究. App Programming 手機程式設 計. Again, we have only two hours. http://www.pastposters.com/details.php?prodId=1030&category=&secondary=& keywords. Basic idea. There is a browser component, WebView

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Social Web Design & Research 社群網站設計 & 研究

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  1. Social Web Design & Research社群網站設計&研究 Social Web Design & Research

  2. App Programming手機程式設計 Social Web Design & Research

  3. Again, we have only two hours Social Web Design & Research

  4. Social Web Design & Research http://www.pastposters.com/details.php?prodId=1030&category=&secondary=&keywords

  5. Basic idea • There is a browser component, WebView • you could imagine that every new platform will have such a component • When users open our app, we show them a full-screen browser and load our homepage immediately • remember to hide the address bar • The remaining things are HTML, CSS, JavaScript and, if needed, CGI Social Web Design & Research

  6. Today we will show you • A Web App Generator, wag • A demo to introduce the development environment, Eclipse • Basic app (windows) programming • WYSIWYG form design, event driven… • Basic Android app programming • Activity (a page in an app), especially its life cycle • Intent (information from an Activity to another) • Techniques needed for our basic idea • WebView • bind JS code to Android code Social Web Design & Research

  7. Demo Social Web Design & Research

  8. WYSIWYG form design http://www.techotopia.com/index.php/Designing_Forms_in_Visual_Studio

  9. Event driven http://www.techotopia.com/index.php/Understanding_Visual_Basic_Events

  10. Android life cycle • LifeCycle • 手機的特性是能隨時離開正在使用的程式，切換到接電話、接收簡訊模式，而且在回來時能看到一樣的內容 • 使用者已經習慣了多工(Multi-Task)的作業系統 • 同時執行多個程式需要更多記憶體，而手機裡的記憶體是相當有限的。當同時執行的程式過多，或是關閉的程式沒有正確釋放記憶體，系統就會越來越慢。為了解決這個問題，Android 引入了一個新的機制：生命週期 Social Web Design & Research

  11. This is not new http://en.wikipedia.org/wiki/Process_state

  12. http://vardhan-justlikethat.blogspot.com/2012/03/developer-view-ios-view-controller.htmlhttp://vardhan-justlikethat.blogspot.com/2012/03/developer-view-ios-view-controller.html

  13. about the life cycle Social Web Design & Research

  14. What actions cause onPause()? Social Web Design & Research

  15. More detailed one http://rupaknepali.com.np/activity-life-cycle-in-the-android-application-development/1474.php

  16. Intent • AndroidIntent • Intent 是一個動作與內容的集合。Intent 像是一串網址，傳送「意圖」給其他 Activity 來處理網址中所指定的動作跟內容。Android 使用 Intent 來完成在螢幕間切換的動作 • 從另一個角度來說，Intent 包含 Activity 間切換所需的動作、分類、傳送資料等訊息，就像是 Activity 之間的宅急便一樣 • Intent intent = new Intent();intent.setClass(foo.this, bar.class); // from foo to bar// retrieve and pack variablesBundle bundle = new Bundle();bundle.putString("FOO_VAR1", foo_var1.getText().toString());bundle.putString("FOO_VAR2", foo_var2.getText().toString());intent.putExtras(bundle);startActivity(intent); // start another activity Social Web Design & Research

  17. WebView • android开发中WebView的使用(附完整程序) • WebView相當於一個迷你的瀏覽器，採用 Webkit核心，因此完美支援 HTML, CSS 以及 JavaScript 等。有時可以把UI 甚至數據處理都交给 WebView，配合 PHP 等伺服器端程式，這樣 Android 開發就變成了網頁開發 • 上面網址中提供一個 WebView的簡單例子，如果把所有功能都交给伺服器端處理，你只要寫好網頁，把URL 填上，再編譯，就是一个新app。 • WebView | Android Developers • Building Web Apps in WebView | Android Developers Social Web Design & Research

  18. WebView code snippet • wv = (WebView) findViewById(R.id.wv);wv.getSettings().setJavaScriptEnabled(true); // enable JavaScriptwv.setScrollBarStyle(0); // hide scroll barwv.setWebChromeClient(new WebChromeClient(){ public booleanonJsAlert(…) { return super.onJsAlert(…);} // when JS alert() public void onProgressChanged(…){ if ( 100 == progress ) { … }super.onProgressChanged(…); } // when progress changed}); // WebChromeClient handles dialogs, progress… Social Web Design & Research

  19. about the code snippet Social Web Design & Research

  20. What is “R.id.wv” wv = (WebView) findViewById(R.id.wv); Social Web Design & Research

  21. Layout • Arrange widgets/controls/components • FrameLayout, LinearLayout, RelativeLayout, AbsoluteLayoutand TableLayout • Layout classes are also widgets • Android的Layout整理 • [新手完全手冊] Hello Android Layout • User Interface | Android Developers Social Web Design & Research

  22. It was specified in the res/layout/xxx.xml http://www.holisticware.com/HolisticWare/Know-How/development/integrated-development-environments-ides/eclipse.aspx

  23. Activity-WebView communication • Building Web Apps in WebView • Activity can change the URL of WebView to pass data • The difficult part is how to retrieve data from WebView • call addJavascriptInterface() and pass it a class instance to bind an interface name that your JS can call to access the class • Once the communication between Activity and WebView is connected, you are actually developing an web app. App (Activity) A full-screen WebView Web server CGI programs Java HTML, CSS and JavaScript Perl, PHP or anything you like Social Web Design & Research

  24. Reminders • Make sure all the required SDKs were installed • Android 2.1 (API 7), 2.3.3 (API 10) or 4.2 (API 17) • Google APIs, if you used the map widget • Set up a suitable virtual device and make sure you selected it • SD Card, screen resolution, GPS support, Keyboard support • Check the run configuration • Project, target (virtual device), Command Line Options • some settings are in the AndroidManifest.xml • Make sure your server program is correct • This is usually the most painful stage (try and error) when learning a new platform. It can be largely eased if you have a good mentor, or at least a partner to discuss. That’s what this course tries to provide. Social Web Design & Research

  25. One more thing Social Web Design & Research

  26. Launch/發佈 • Find the file at bin/xxx.apk, upload it to a web server and share the url • Of course you can launch to the market (Google Play), which is beyond the scope of this slide • Once again, you will see the power of web technology in launching. You can launch new version immediately and cross-platform (web, Android and iOS). Social Web Design & Research

  27. Today’s assignment今天的任務 Social Web Design & Research

  28. Create an app • Two options, you may create a very simple app. Another option is to make a mobile version (small screen version) for your site. So that mobile users feel good when browsing your site. • Reference • Android Developers • How To Build A Mobile Website • mobile web - Google 搜尋 • 開發手機版網頁 • Your web site (http://merry.ee.ncku.edu.tw/~xxx/cur/) will be checked not before 23:59 5/29 (Tue). You may send a report (such as some important modifications) to me in case I did not notice your features. Social Web Design & Research

  29. Appendix附錄 Social Web Design & Research

  30. Thread • [Android] 多執行緒-Handler和Thread的關係 • 在 Android 當中，一件事如果做超過 5 秒被系統強制關閉(收到Application not Responsed, ANR)；在 onCreate() 中如果做超過 10 秒就會跳ANR • 所以繁重的事情不能在 onCreate() 裡頭做。解決的辦法就是 thread (執行緒) • Main thread for UI, worker threads for long-time work and use handers to find other threads • Thread | Android Developers • android裡的thread的朋友：Handler Social Web Design & Research

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