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POAndroid tutorial error: R cannot be resolved to a variable
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  1. POAndroid tutorial error: R cannot be resolved to a variable
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    copied!<p><a href="http://developer.android.com/training/basics/firstapp/building-ui.html" rel="nofollow">http://developer.android.com/training/basics/firstapp/building-ui.html</a></p> <p>I have been following this tutorial, but I have two errors, both "R cannot be resolved to a variable". I have made android apps (easy ones) in the past, and I remember this problem being fixed by checking whether or not I have an import R statement (which I don't) and whether or not the project has been cleaned before being built again (I cleaned it and I still get the error). I am at a loss as to what to do. Thanks!</p> <p>*I also want to mention I did see the thread of the same title with 170 hits, and the solution of "delete the import R statement" does not apply to my problem (I don't think) Thanks again</p> <p>All code is straight from the link above, but here it is for convenience</p> <p>activity_my_first.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="horizontal"&gt; &lt;EditText android:id="@+id/edit_message" android:layout_weight="1" android:layout_width="0dp" android:layout_height="wrap_content" android:hint="@string/edit_message" /&gt; &lt;Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/button_send" /&gt; &lt;/LinearLayout&gt; </code></pre> <p>MyFirstActivity.java</p> <pre><code>package com.example.myfirstapp; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.view.MenuItem; import android.support.v4.app.NavUtils; public class MyFirstActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_my_first); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_my_first, menu); return true; } } </code></pre> <p>strings.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;resources&gt; &lt;string name="app_name"&gt;My First App&lt;/string&gt; &lt;string name="edit_message"&gt;Enter a message&lt;/string&gt; &lt;string name="button_send"&gt;Send&lt;/string&gt; &lt;string name="menu_settings"&gt;Menu Settings&lt;/string&gt; &lt;/resources&gt; </code></pre> <p>edit: When I clean the project, I get this message in the Console:</p> <blockquote> <p>[2012-06-29 11:12:38 - MyFirstApp] W/ResourceType( 6140): Bad XML block: header size 91 or total size 0 is larger than data size 0 [2012-06-29 11:12:38 - MyFirstApp] C:\Users\zhong\workspace\eclipse\MyFirstApp\res\menu\activity_my_first.xml:2: error: Error: No resource found that matches the given name (at 'title' with value '@string/menu_settings').</p> </blockquote> <p>edit: added a line to layout xml file <code>&lt;string name="menu_settings"&gt;Menu Settings&lt;/string&gt;</code> Fixed cleaning project errors, but I still can't run the project from the two R errors.</p>
 

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