如何使用Brightscript访问另一个文件标签? [英] How to Access another file Label using a Brightscript?

问题描述

我正在尝试简单的导航.而且我尝试了多种方法来打开另一个屏幕.

I'm trying to simple navigation. And I tried more than one way to open another screen.

1. 隐藏/显示概念(但仅适用于单个文件).
2. 使用视图堆栈(但仍无法正常工作)
3. 使用标签和标签内部调用另一个文件. (但是它的错误导致Interface不是BrightScript Component的成员)
4. 在标签内使用相同的标签来调用另一个文件. (但是它不会从另一个文件中获取值).

在这里我的第一个文件在第一屏幕"中编写代码

Here My First File Write a code to First Screen

Main.brs

  screen = CreateObject("roSGScreen")     'one Application only once roSGScreen
  m.port = CreateObject("roMessagePort")
  screen.setMessagePort(m.port)
  scene = screen.CreateScene("WisePanel")     'Here the First screen component name
  screen.show()

PanelSet.xml

PanelSet.xml

<?xml version="1.0" encoding="UTF-8"?>

<component name="WisePanel" extends="Scene">

<script type="text/brightscript" uri="pkg:/components/PanelSet.brs" />
<Group  id="FirstScreen" > 

      <Label  
      id = "lbfirstscreen" 
      font="font:LargeBoldSystemFont"
      text = "This is the first Screen"
      translation = "[200,250]" /> 

</Group>

</component>

在键事件集中设置.brs文件以打开另一个屏幕(单击选项键并打开一个新屏幕)

Here the .brs file in the key event set to open another screen(click option key and open a new screen)

PanelSet.brs

PanelSet.brs

sub init()

     m.FirstScreenLabel = m.top.findNode("lbfirstscreen")

end sub

function onKeyEvent(key as String, press as Boolean) as Boolean

 handled = false

  if press then
      if key="options" then
          ' Here the write a Logic
          keyboard= CreateObject("roSGNode", "KeyboardDialog")

          ?"call keyevent Fucntion"

          'here show function to give a error
          m.top.ComponentController.CallFunc("show", {
          view: keyboard
    })
      end if
  end if

end function

我在单个文件File中的第二个屏幕XML和brs都是

My second screen XML and brs both in single file File is

keyboarddialogscene.xml

keyboarddialogscene.xml

<?xml version = "1.0" encoding = "utf-8" ?> 

<component name = "KeyboardDialog" extends = "Group" >

<script type = "text/brightscript" >

<![CDATA[

sub init()

    m.SecondScreenLabel = m.top.findNode("lblsecondscreen")

end sub


]]>

</script>
<children >
<Group id="SecondScreen" > 

      <Label  
      id = "lblsecondscreen" 
      font="font:LargeBoldSystemFont"
      text = "This is the second Screen"
      translation = "[200,250]" /> 

</Group>


</children>

</component>

我尝试单击远程选项"键，然后在第二个屏幕上显示一个标签"，任何人都知道该问题.

I try to Click in Remote Option key then I display a Label on second screen File anyone knows the issue.

推荐答案

我使用了您的代码，可以使它正常工作，但是我进行了一些调整.

I used your code, I was able to make it work, however, I made some adjustments.

我认为您目前使用的代码问题是一个范围" 问题，请允许我解释一下.

I think your issue with the code just as you have it right now, is a "scope" issue, let me explain a little bit.

您试图在panelset.brs文件中调用"m.top.ComponentController"，但"ComponentController"不是面板集组件上的字段，在该范围内，您只能访问面板集界面上的字段.

You are trying to call "m.top.ComponentController" within you panelset.brs file but "ComponentController" is not a field on the panelset component, in that scope you can only access the fields on the panelset interface.

因此，您有两种选择:

1-在您的panelSet.brs上，而不是调用"m.top.ComponentController"，将其更改为"m.top.getScene().ComponentController".

1 - On your panelSet.brs instead of calling "m.top.ComponentController" change it for "m.top.getScene().ComponentController".

2-在您的wisePanel.xml上创建一个字段，在创建WisePanel组件的那个字段中添加一个侦听器，在该范围内，您将可以m.top.componentController.

2 - Create a field within your on your wisePanel.xml, add a listener to that field where you create the WisePanel component, in that scope, you'll be able to m.top.componentController.

注意:我使用了setup_and_helloworld

Note: I used the setup_and_helloworld link example of the Roku Dev with your files.

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