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DAY 5
1

Windows Metro style Apps using HTML5系列 第 5

Windows 8 HTML5 WinRT App : 花30分鐘做一個 rss reader

http://ithelp.ithome.com.tw/ironman5/player/seanamph/tech/1
花30分鐘哪可能?
我花了一下午搞這個!
因為什麼都不懂....

Visual Studio 2012 Express 免費版裝好了嗎?
裝好打開就像這樣

選Javascript 空白專案,然後把那串本來就已經打好的字改(copy)掉

<button id="backbutton" class="win-backbutton"></button>
<h1 id="maintitle" class="win-title">歡迎</h1>

用模擬器執行一下

ok 可以執行。

參考 http://msdn.microsoft.com/en-us/library/windows/apps/br211837.aspx 的範例。

html程式碼打(copy)進去了。

 <div id="mediumListIconTextTemplate" data-win-control="WinJS.Binding.Template">
        <div>

            <!-- Displays the "picture" field. -->
            <img data-win-bind="alt: title; src: picture" />
            <div>

                <!-- Displays the "title" field. -->
                <h4 data-win-bind="innerText: title"></h4>

                <!-- Displays the "text" field. --> 
                <h6 data-win-bind="innerText: description"></h6>
            </div>
        </div>
    </div>     

    <div id="basicListView" data-win-control="WinJS.UI.ListView" 
        data-win-options="{itemDataSource : DataExample.itemList.dataSource, itemTemplate: select('#mediumListIconTextTemplate')}">
    </div>


javascript 也打(copy)進去了

   var dataArray = [
    { title: "Basic banana", text: "Low-fat frozen yogurt", picture: "images/60banana.png" },
    { title: "Banana blast", text: "Ice cream", picture: "images/60banana.png" },
    { title: "Brilliant banana", text: "Frozen custard", picture: "images/60banana.png" },
    { title: "Orange surprise", text: "Sherbet", picture: "images/60orange.png" },
    { title: "Original orange", text: "Sherbet", picture: "images/60orange.png" },
    { title: "Vanilla", text: "Ice cream", picture: "images/60vanilla.png" },
    { title: "Very vanilla", text: "Frozen custard", picture: "images/60vanilla.png" },
    { title: "Marvelous mint", text: "Gelato", picture: "images/60mint.png" },
    { title: "Succulent strawberry", text: "Sorbet", picture: "images/60strawberry.png" }
    ];

    var dataList = new WinJS.Binding.List(dataArray);

    // Create a namespace to make the data publicly
    // accessible. 
    var publicMembers =
        {
            itemList: dataList 
        };
    WinJS.Namespace.define("DataExample", publicMembers); 

執行...

ok,有東西,但是我沒有圖檔。

var dataArray 太簡單了。不過搞到現在已經兩小時了....

改用真正的rss,先用 http://tw.news.yahoo.com/rss 來try看看.....

參考 http://blogs.msdn.com/b/davrous/archive/2012/05/11/windows-8-html5-metro-style-app-how-to-create-a-small-rss-reader-in-30min-part-1-2.aspx
WinJS.xhr 就是 XmlHttpRequest, 所以拿來下載網頁的資料。

function downloadC9BlogFeed() {
    WinJS.xhr({ url: "http://channel9.msdn.com/coding4fun/articles/RSS" }).then(function (rss) {

    });
}

然後參考 http://debugmode.net/2011/12/23/consuming-json-in-windows-8-metro-style-application-using-winjs/ 可以用 JSON.parse 把xml 轉json,但怎麼試都失敗....


debug畫面.....

最後找到 http://www.thetugboatcomplex.com/?p=820 ,靠...googleapi把xml轉成json,既然這樣就.....以後再研究這塊好了。

function loadNews() {

    var dataControl = document.getElementById(“myListView”).winControl,
        feedburnerUrl = “http://feeds.feedburner.com/WindowsPhoneDevPodcast”,
        feedUrl = “http://ajax.googleapis.com/ajax/services/feed/load?v=1.0&output=json&num=999&q=”
                  + encodeURIComponent(feedburnerUrl);
    WinJS.xhr({ url: feedUrl })
        .done(function complete(result) {
            var jsonData = JSON.parse(result.response);
            var list = new WinJS.Binding.List(jsonData.responseData.feed.entries);
            dataControl.itemDataSource = list.dataSource;
        });
}

html和 javascript 改一改(copy)....

javascript:

    WinJS.xhr({ url: "http://ajax.googleapis.com/ajax/services/feed/load?v=1.0&output=json&num=999&q=http%3A%2F%2Ffeeds.feedburner.com%2FWindowsPhoneDevPodcast" }).done(function complete(result) {
        var jsonData = JSON.parse(result.responseText);
        var list = new WinJS.Binding.List(jsonData.responseData.feed.entries);
         lv.winControl.itemDataSource = list.dataSource;
    });


    // Create a namespace to make the data publicly
    // accessible.  

    app.onactivated = function (args) {
        if (args.detail.kind === activation.ActivationKind.launch) {
            if (args.detail.previousExecutionState !== activation.ApplicationExecutionState.terminated) {
                // TODO: 這個應用程式剛啟動。請在這裡初始化
                // 您的應用程式。
            } else {
                // TODO: 這個應用程式已經從擱置重新啟用。
                // 請在這裡還原應用程式狀態。
            }
            args.setPromise(WinJS.UI.processAll());
        }
    };

html

  <button id="backbutton" class="win-backbutton"></button>
    <h1 id="maintitle" class="win-title">歡迎</h1>
    <div id="mediumListIconTextTemplate" data-win-control="WinJS.Binding.Template">
        <div class="listItemTemplate">
          <a data-win-bind="innerText:title; href: link"></a>
        </div>
    </div>
    <div id="lv" data-win-control="WinJS.UI.ListView" data-win-options="{itemTemplate: select('#mediumListIconTextTemplate')}">
    </div>

執行.......

看到東西了

點下去看看

ok.....

明天再try(copy)別的.....Or22


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css3 範例與產生器
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初探 WinJS.UI
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Windows Metro style Apps using HTML537

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