无法解析资源android eclipse

could not resolve resource android eclipse

提问by dav

I am new in andorid development. I have created my android first project according to http://developer.android.com/training/basics/firstapp/creating-project.html

我是安卓开发的新手。我已经根据http://developer.android.com/training/basics/firstapp/creating-project.html创建了我的 android 第一个项目

And here is the code that I have as the project was created(no changes are done in code by me)

这是我在创建项目时拥有的代码（我没有对代码进行任何更改）

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

</RelativeLayout>

Here is the screenshot of the Graphical layout http://imageshack.us/a/img35/5284/android1s.png

这是图形布局的截图 http://imageshack.us/a/img35/5284/android1s.png

So, it looks fine for now, but if I want to change the text Hello worldto , say, hello, so the code's part looks like android:text="@string/hello", I get the error

所以，现在看起来不错，但是如果我想将文本更改Hello world为 ，例如，hello代码部分看起来像android:text="@string/hello"，我会收到错误

NOTE: This project contains resource errors, so aapt did not succeed, which can cause rendering failures. Fix resource problems first.

NOTE: This project contains resource errors, so aapt did not succeed, which can cause rendering failures. Fix resource problems first.

and

和

Couldn't resolve resource @string/hello, and the text in graphical layout becomes @string/hello, as it is in this image

Couldn't resolve resource @string/hello, 图形布局中的文本变为 @string/hello, 就像在此图像中一样

http://imageshack.us/a/img826/7735/android2p.png

http://imageshack.us/a/img826/7735/android2p.png

But I noticed one thing: If after this error I go to res/values/strings.xmland add Stringwith name and value hello, like

但我注意到一件事：如果在这个错误之后我去res/values/strings.xml添加Stringname 和 value hello，比如

http://img842.imageshack.us/img842/8108/android3s.png

http://img842.imageshack.us/img842/8108/android3s.png

The error disappears and I can see the word helloin the graphical layout.

错误消失了，我可以hello在图形布局中看到这个词。

I tried these so far

到目前为止我试过这些

1. Using ctrl+shift+slike it is described here https://stackoverflow.com/a/14462434/932473
2. Closing and reopening Eclipse.
3. cleaning, rebulding
4. removing the entire project and creating again.

1. ctrl+shift+s像这里描述的那样使用https://stackoverflow.com/a/14462434/932473
2. 关闭并重新打开 Eclipse。
3. 清洁、重组
4. 删除整个项目并重新创建。

The valuesfolder does exist in res.

该values文件夹确实存在于res.

None of these questions solved my problem

这些问题都没有解决我的问题

Eclipse could not resolve string resource error

Eclipse 无法解决字符串资源错误

Can't Resolve Android Resource Strings

无法解析 Android 资源字符串

UPDATEDIf I write like this android:text="hello"I get this warning in eclipse Hardcoded string "hello", should use @string resource,

更新如果我这样写，android:text="hello"我会在 eclipse 中收到这个警告 Hardcoded string "hello", should use @string resource，

I do not get it every time I want to use some string like android:text="@string/hello2", I have to first manually specify hello2it in strings.xml?

每次我想使用一些字符串时我都没有得到它android:text="@string/hello2"，我必须先hello2在strings.xml?

回答by Raghunandan

In res/values/strings.xml

在 res/values/strings.xml

      <string name="hello">Hello</string>

Then refer the string in your textview as

然后将文本视图中的字符串引用为

      android:text="@string/hello"

I guess you do not have something similar to above. Hence you get resource not found exception coz the resource is not defined in strings.xml

我想你没有与上面类似的东西。因此你得到资源未找到异常因为资源没有在 strings.xml 中定义

                 or

You can do as below

你可以做如下

       <string name="hello_world">hello</string> // change the string in strings.xml      
       android:text="@string/hello_world"  

For the question in the comment

对于评论中的问题

回答by Doomsknight

You can just use

你可以使用

android:text="hello"

the @string bit means its a resource called helloin your xml.

@string 位表示它是hello在您的 xml 中调用的资源。

So you can also add the resource to your xml if you wish. Its known to be better practice, for internationalization.

因此，如果您愿意，您还可以将资源添加到您的 xml 中。众所周知，它是更好的实践，用于国际化。