错误:"无法解析符号'@ string/edit_message'"Android Studio

Question

我正在尝试按照android教程:http://developer.android.com/training/basics/firstapp/building-ui.html 但是当我到达你必须添加按钮的部分时,我的Android Studio会一直返回这个错误:

Cannot resolve symbol '@string/edit_message'
Cannot resolve symbol '@string/button_send'

XML代码:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >
    <EditText android:id="@+id/edit_message"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:hint="@string/edit_message" />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/button_send" />
</LinearLayout>

我在这做错了什么？我无法在其他stackoverflow问题上找到正确的解决方案,我很确定我在谷歌的android教程中使用了正确的代码.

Answer 1

您必须在strings.xml中定义这两个字符串

     <?xml version="1.0" encoding="utf-8"?>
    <resources>
      ...
        <string name="edit_message">something text /string>
        <string name="button_send">something text</string>
      ...
    </resources>

Answer 2

更新位于res/values /下的strings.xml

同

<string name="edit_message">Edit</string>
<string name="button_send">Send</string>