title: Unfortunately, “App Name” has stopped. (Eclipse, Android)
body: <p>I am somewhat new to Android app Programming.
  I was able to create the app and be able to export it and install it to my android device, but when I try to run it it quits and displays the message "Unfortunately, My First App has stopped." This problem is also present when I try to run the app in an emulator </p>
  
  <p>This is my AndroidManifest file:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.example.tada"
  android:versionCode="1"
  android:versionName="1.0" &gt;
  
  &lt;uses-sdk
      android:minSdkVersion="12"
      android:targetSdkVersion="21" /&gt;
  
  &lt;application
      android:allowBackup="true"
      android:icon="@drawable/ic_launcher"
      android:label="@string/app_name"
      android:theme="@style/AppTheme"&gt;
      &lt;activity
          android:name=".MainActivity"
          android:label="@string/app_name" &gt;
  
          &lt;intent-filter&gt;
              &lt;action android:name="android.intent.action.MAIN" /&gt;
  
              &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
          &lt;/intent-filter&gt;
  &lt;/activity&gt;
  &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>
  
  <p>This is my mainactivity file:</p>
  
  <pre><code>package com.example.tada;
  
  import android.app.Activity;
  import android.os.Bundle;
  import android.view.Menu;
  import android.view.MenuItem;
  
  
  public class MainActivity extends Activity {
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
  }
  
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
      // Inflate the menu; this adds items to the action bar if it is present.
      getMenuInflater().inflate(R.menu.main, menu);
      return true;
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
      item.getItemId();
      return true;
   }
  }
  </code></pre>
  
  <p>This is my activity_main file</p>
  
  <pre><code>&lt;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="com.example.tada.MainActivity" &gt;
  
  &lt;TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="@string/welcome_to_the_tada_app" /&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>Here is my LogCat</p>
  
  <p>11-23 01:22:21.520: D/AndroidRuntime(1055): Shutting down VM
  11-23 01:22:21.520: W/dalvikvm(1055): threadid=1: thread exiting with uncaught exception (group=0xb3afbba8)
  11-23 01:22:21.560: E/AndroidRuntime(1055): FATAL EXCEPTION: main
  11-23 01:22:21.560: E/AndroidRuntime(1055): Process: com.example.tada, PID: 1055
  11-23 01:22:21.560: E/AndroidRuntime(1055): java.lang.Error: Unresolved compilation problem: 
  11-23 01:22:21.560: E/AndroidRuntime(1055):     activity_main cannot be resolved or is not a field
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at com.example.tada.MainActivity.onCreate(MainActivity.java:14)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at android.app.Activity.performCreate(Activity.java:5231)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at android.app.ActivityThread.access$800(ActivityThread.java:135)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at android.os.Handler.dispatchMessage(Handler.java:102)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at android.os.Looper.loop(Looper.java:136)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at android.app.ActivityThread.main(ActivityThread.java:5017)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at java.lang.reflect.Method.invokeNative(Native Method)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at java.lang.reflect.Method.invoke(Method.java:515)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
  11-23 01:22:21.560: E/AndroidRuntime(1055):     at dalvik.system.NativeStart.main(Native Method)
  11-23 01:22:26.100: I/Process(1055): Sending signal. PID: 1055 SIG: 9</p>