I know this question had been asked many times, and I tried everything to make it go away, but the error is still here.. I tried all these: "R cannot be resolved to a variable"? but the error won't disappear. Maybe it has something to do with the appcompat_v7 I deleted? I don't know exactly what files I should post to solve this problem.
activity_main.xml:
<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:layout_marginTop="26dp"
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="com.example.testjk.MainActivity" >
<TableLayout
android:id="@+id/PlayArea"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="10dp" >
<Button
android:id="@+id/eleven"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:layout_marginLeft="50dp"
android:text="@string/eleven" />
//some more here
</TableLayout>
</RelativeLayout>
strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">testjk</string>
<string name="hello_world">Hello world!</string>
<string name="turn_human">Jouw beurt.</string>
//some more here
</resources>
MainActivity.java
package com.example.testjk;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import com.example.testjk.R;
TicTacToeGame.java = in same folder as MainActivity = com.example.
package com.example.testjk;
import java.util.Random;
this error occurs when some xml file under /res folder have some issues or you have some errors in your manifest file. see error log on eclipse to find the real problem.