Question

有人在这里提出同样的问题How do you get the value from a TVML textField?，但没有解释完整的答案，我的评论已被编辑，建议我提出一个全新的问题。这是......

任何人都可以帮助了解如何最好地从TVML获取对<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" package="com.arion.arionbookeeper" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="10" android:targetSdkVersion="19" /> <uses-permission android:name="android.permission.INTERNET" android:required="true" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" android:required="true" /> <uses-permission android:name="android.permission.RECORD_AUDIO" android:required="true" /> <uses-permission android:name="ANDROID.PERMISSION.READ_EXTERNAL_STORAGE" android:required="true" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:required="true" /> <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" android:required="true" /> <uses-permission android:name="android.permission.VIBRATE" /> <uses-feature android:name="android.hardware.camera" android:required="true" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="18" /> <uses-permission android:name="android.permission.READ_CONTACTS" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <application android:name=".WallPApplication" android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/CustomActionBar" tools:replace="android:theme" > <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" /> <service android:name=".eventListeners.BackgroundEventListenerService" android:exported="false" android:icon="@drawable/ic_launcher" /> <activity android:name=".GettingStarted" android:label="@string/app_name" android:noHistory="true" android:screenOrientation="portrait" android:theme="@style/NoActionBar" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity>  </application> </manifest>节点及其键盘值的引用吗？现在，我在textField中使用此代码，一旦用户点击显示表单＆amp;表格的模板中的Presenter.js按钮，即可转到textField。键盘，但仍然得到

ITML：undefined不是对象（评估'textField.getFeature'） - ... / js / Presenter.js

当我使用Done时：

getFeature("Keyboard")

更新：

我通过查看accessing elements by traversing XML DOM找到了解决方案：

load: function(event) {  
var self = this,  
    ele = event.target,  
    templateURL = ele.getAttribute("template"),  
    presentation = ele.getAttribute("presentation"),  
    videoURL = ele.getAttribute("videoURL");  

if (templateURL && (event.type == "select")) {  
    var formTemplate = ele.parentNode.parentNode; // that should give me <formTemplate> element  
    var children = formTemplate.childNodes;  
    var textField = children[1]; // which is the second element in <formTemplate><banner></banner><textField></textField>...  
    var keyboard = textField.getFeature("Keyboard"); // this raises the ITML Error...  
    ...........................

Answer 1

从文档的根开始怎么样？使用getElementsByTagName，getElementByTagName或getElementById访问textField。

var doc = navigationDocument.documents[navigationDocument.documents.length-1];
var textField = doc.getElementByTagName("textField")

var value = textField.getFeature("Keyboard").text;

Answer 2

假设自我解释的解决方案，我正在添加以完成有关更改回调的文本：

var keyboard = textField.getFeature("Keyboard");
keyboard.onTextChange = function () {
  console.log("onTextChange "+keyboard.text)
}

并且假设formTemplate就像

<formTemplate>
    <banner>
      <title>${formTitle}</title>
      <description class="longDescriptionLayout">${formDescription}</description>
    </banner>
    <textField>${formPlaceholder}</textField>
    <footer>
      <button id="pairingCodeInput">
        <text>Confirm</text>
      </button>
    </footer>
  </formTemplate>

在Presenter类中我会添加以处理更多选择器，如：

if ((event.type == "select")) { // item selected
    if (itemId == "pairingCodeInput") { // form input
        var formTemplate = ele.parentNode.parentNode;
        var children = formTemplate.childNodes
        var textField = children.item(1)
        var keyboard = textField.getFeature("Keyboard")
        keyboard.onTextChange = function() {
            console.log("onTextChange " + keyboard.text)
        }
        var userValue = keyboard.text
        console.log("Entered " + userValue)

    }
}

Answer 3

您需要使用

xmlElem.item(i)

而不是

xmlElem.item[i]

如何在TVJS中获取TVML textField的节点和键盘参考？

3 个答案: