Android Studio错误:无法解析Xml中的符号 [英] Android Studio error: cannot resolve symbol in Xml

问题描述

我正在关注Google Android Studio的第一个android应用程序教程.但是，当我尝试向我的应用添加搜索栏时，出现了3个奇怪的错误.

I'm following the google Android Studio first android app tutorial. But I get 3 weird errors now when trying to add a search bar to my app.

我现在在这里，并且像本教程一样添加了XML代码.

I'm here right now and I added the XML code just like the tutorial.

http://developer.android.com/training/basics/actionbar/adding-buttons.html

我得到的错误:

Error:(5, 23) No resource found that matches the given name (at 'icon' with value '@drawable/ic_action_search').
Error:(6, 24) No resource found that matches the given name (at 'title' with value '@string/action_search').

在android:showAsAction ="ifRoom"上，我遇到了奇怪的错误:

At android:showAsAction="ifRoom" I'm getting the weird error:

Excecution failed for task ':app:procesDebugResources'.

这是我的XML代码:

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools" tools:context=".MainActivity">
    <item android:id="@+id/action_search"
        android:icon="@drawable/ic_action_search"
        android:title="@string/action_search"
        android:showAsAction="ifRoom" />
    <item android:id="@+id/action_settings" android:title="@string/action_settings"
        android:orderInCategory="100" app:showAsAction="never" />
</menu>

此代码有什么问题?

感谢您的阅读/帮助！

推荐答案

尝试一下:

<menu xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:tools="http://schemas.android.com/tools" tools:context=".MainActivity">
    <item android:id="@+id/action_search"
          android:icon="@android:drawable/ic_menu_search"
          android:title="@string/action_search"
          app:showAsAction="ifRoom" />
    <item android:id="@+id/action_settings" android:title="@string/action_settings"
          android:orderInCategory="100" app:showAsAction="never" />
</menu>

一些注意事项:

1)您应该将android:showAsAction标记更改为app:showAsAction，这与与旧版android的兼容性有关.

1) You should change android:showAsAction tag to app:showAsAction, this is to do with compatibility with older versions of android.

2)我已将您的搜索图标更改为嵌入Android的图标.您正在做的是尝试使用本机Android图标.自从您的教程以来，这种情况似乎已经改变.您始终可以使用自己的图标，并将其放在项目的res/drawable文件夹中.

2) I've changed your search icon to one embedded in Android. What you're doing is trying to use a native Android icon. Seems like this has changed since your tutorial. You can always use your own icon and put it in the res/drawable folders in your project.

3)就像@drawable是对您的可绘制对象的引用一样，@ string是对res/values文件夹中的strings.xml文件的引用.您需要打开此xml文件并添加以下内容:

3) Just as @drawable is a reference to your drawables, @string is a reference to the strings.xml file in your res/values folder. You need to open this xml file and add something like:

<string name="action_search">Search</string>

希望如此，祝您好运.

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