在我的 tvml 模板中显示 MediaItem 属性？

Question

我正在尝试制作 Apple tv 应用。

我正在使用来自 tvOS 开发者库的示例代码：

https://developer.apple.com/library/tvos/samplecode/TVMLAudioVideo/Introduction/Intro.html

我想显示来自 application.js 的数据：

video.title = metadata.title;
video.subtitle = metadata.subtitle;
video.description = metadata.description;
video.artworkImageURL = metadata.artworkImageURL;

var Videos = {
    video: [{
        title: "AV BipBop",
        subtitle: "Sample HLS Stream",
        description: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.",
        artworkImageURL: "",
        contentRatingDomain: "movie",
        contentRatingRanking: 400,
        url: "https://devimages.apple.com.edgekey.net/streaming/examples/bipbop_16x9/bipbop_16x9_variant.m3u8"
    }],

在我的 index.xml.js 中

 /*
    Copyright (C) 2015 Apple Inc. All Rights Reserved.
    See LICENSE.txt for this sample’s licensing information

    Abstract:
    A list template shows a list of items on the right, such as movies or TV shows. Focus on one to see its related content on the left, such as its artwork or description.
*/
var Template = function() {
    return '<?xml version="1.0" encoding="UTF-8"?>' +
    '<document>' +
        '<listTemplate>' +
            '<list>' +
                '<header>' +
                    '<title>Playback examples</title>' +
                '</header>' +
                '<section>' +
                    '<listItemLockup id="video">' +
                        '<title> (Here video title )   </title>' +
                    '</listItemLockup>' +
                    '<listItemLockup id="playlist">' +
                        '<title>Playlist</title>' +
                    '</listItemLockup>' +
                '</section>' +
            '</list>' +
        '</listTemplate>' +
    '</document>';
}

我已经尝试过：${title} 和 ${video.title} 但它不起作用。

Answer 1

您尝试引用的对象超出范围。您可以修改模板以将字典作为参数。

var Template = function(video) {
var doc = '<?xml version="1.0" encoding="UTF-8"?>' +
'<document>' +
    '<listTemplate>' +
        '<list>' +
            '<header>' +
                '<title>Playback examples</title>' +
            '</header>' +
            '<section>' +
                '<listItemLockup id="video">' +
                    '<title>${video["title"]}</title>' +
                '</listItemLockup>' +
                '<listItemLockup id="playlist">' +
                    '<title>Playlist</title>' +
                '</listItemLockup>' +
            '</section>' +
        '</list>' +
    '</listTemplate>' +
'</document>';
return doc;
}

您需要修改调用以从 ResourceLoader.js 中创建此模板，如下所示：

var resource = Template.call(self, myVideoDictionary);