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大家好，

我在xmlview中定义了一个文本区域：

  </pre>
 <p>我可以在</p>中设置值
 <pre> onInit：函数（）{
 this.byId（" textAreaContent"）。setValue（" uschi"）;
 }，
 </pre>
 <p>这很好</p>
 <p>但是当我在下面使用相同的语句时，它不起作用，我想知道为什么</p>
 <p> <img src="/img/storage/temp/1687599-unbenannt.jpg"> </p>
 <p>我收到一个错误：</p>
 <p> <img src="/img/storage/temp/1687600-unbenannt.jpg"> </p>
 <p>谢谢。</p>
 <p>如何在对话框中使用setValue？</p>
 <p>谢谢，问候</p>
 <p>马里奥</p>

    
        
         <a href="/storage/temp/1687599-unbenannt.jpg"> unbenannt.jpg </a>
         （43.2 kB）            </div>
            
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            Cikesha                                    </a>
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             <span> 2020-09-08 15:00                          
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                                                                          <p>嗨，我建议不要使用getCore（），而是可以使用jsonmodel并以此作为玩法，</p> <p>创建一个jsonModel即jsonModel  .setData（{textValue：" Lorem ipsum .."}）并将其设置为视图</p> <p>将" textValue"字段绑定到textarea，您只需在以下位置获取并将其设置为模型字段值即可 textarea将自动更改。 例如</p> <p> jsonModel.getProperty（"/img/textValue"）//获取文本区域值</p> <p> jsonModel.setProperty（"/img/textValue"，" uschi"）//设置文本区域值</p  >                                                                    <div class="appendcontent">
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