title: public static final int 13687=0x7f020000; Error
body: <p>I am creating simple calculation program/app on android here's the auto generated error comes
   public static final int 13687=0x7f020000;</p>
  
  <p>here's the code:
   src>java :</p>
  
  <pre><code>public class FirstAct extends Activity {
  int counter;
  int i;
  Button plus,minus,x,Divide;
  TextView Show;
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_first);
          counter =0;
          i=1;
          plus = (Button) findViewById(R.id.xadd); //buttons in java
          minus =(Button) findViewById(R.id.xsub);
          x = (Button) findViewById(R.id.xmultiply);
          Divide = (Button) findViewById(R.id.xdivide);
          Show = (TextView) findViewById(R.id.xtv2);
  
  
          plus.setOnClickListener(new View.OnClickListener() {
  
              @Override
              public void onClick(View v) {
                  // TODO Auto-generated method stub
                  counter++;
  
              }
          });
  
         minus.setOnClickListener(new View.OnClickListener() {
  
              @Override
              public void onClick(View v) {
                  // TODO Auto-generated method stub
                  counter--;
                  Show.setText("Total ="+counter);
              }
          });
  
        x.setOnClickListener(new View.OnClickListener() {
  
              @Override
              public void onClick(View v) {
                  // TODO Auto-generated method stub
                  counter*=i;
                  i++;
                  Show.setText("Total ="+counter);
              }
          });
        Divide.setOnClickListener(new View.OnClickListener() {
  
              @Override
              public void onClick(View v) {
                  // TODO Auto-generated method stub
                  counter/=i;
                  i++;
              Show.setText("Total ="+counter);
              }
          }); 
  
      }
  
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
          // Inflate the menu; this adds items to the action bar if it is present.
          getMenuInflater().inflate(R.menu.first, menu);
          return true;
      }
  
  }
  </code></pre>
  
  <p>here's gen>R>java code</p>
  
  <pre><code>public static final int activity_horizontal_margin=0x7f050000;
          public static final int activity_vertical_margin=0x7f050001;
      }
          public static final class drawable {
          public static final int 13687=0x7f020000; //error here it is?? WHY
          public static final int ic_launcher=0x7f020001;
      }
      public static final class id {
          public static final int action_settings=0x7f090006;
          public static final int xadd=0x7f090001;
          public static final int xdivide=0x7f090004;
          public static final int xmultiply=0x7f090003;
          public static final int xsub=0x7f090002;
          public static final int xtv1=0x7f090000;
          public static final int xtv2=0x7f090005;
      }
      public static final class layout {
          public static final int activity_first=0x7f030000;
      }
      public static final class menu {
          public static final int first=0x7f080000;
      }
      public static final class raw {
          public static final int sunrahahai=0x7f040000;
      }
      public static final class string {
          public static final int Total=0x7f060003;
          public static final int Wel=0x7f060002;
          public static final int action_settings=0x7f060001;
          public static final int app_name=0x7f060000;
          public static final int del=0x7f060005;
          public static final int div=0x7f060006;
          public static final int mul=0x7f060007;
          public static final int sum=0x7f060004;
      }
      public static final class style {
          /** 
          Base application theme, dependent on API level. This theme is replaced
          by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
  
  
              Theme customizations available in newer API levels can go in
              res/values-vXX/styles.xml, while customizations related to
              backward-compatibility can go here.
  
           */
          public static final int AppBaseTheme=0x7f070000;
          /**  Application theme. 
   All customizations that are NOT specific to a particular API-level can go here. 
           */
          public static final int AppTheme=0x7f070001;
      }
  }
  </code></pre>
  
  <p>Here's the XML CODE:</p>
  
  <pre><code>&lt;LinearLayout 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:orientation="vertical"
      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=".FirstAct" &gt;
  
      &lt;TextView
          android:id="@+id/xtv1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="@string/Wel" /&gt;
  
      &lt;Button
          android:id="@+id/xadd"
          android:layout_width="150dp"
          android:layout_height="wrap_content"
          android:text="@string/sum"
          android:textSize="20sp" /&gt;
  
      &lt;Button
          android:id="@+id/xsub"
          android:layout_width="147dp"
          android:layout_height="wrap_content"
          android:text="@string/del"
          android:textSize="20sp" /&gt;
  
      &lt;Button
          android:id="@+id/xmultiply"
          android:layout_width="143dp"
          android:layout_height="wrap_content"
          android:layout_marginRight="26dp"
          android:text="@string/mul"
          android:textSize="20sp" /&gt;
  
      &lt;Button
          android:id="@+id/xdivide"
          android:layout_width="144dp"
          android:layout_height="wrap_content"
          android:text="@string/div"
          android:textSize="20sp" /&gt;
  
  
      &lt;TextView
          android:id="@+id/xtv2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_marginBottom="44dp"
          android:layout_marginRight="14dp"
          android:text="@string/Total"
          android:textSize="20sp" /&gt;
      &lt;/LinearLayout&gt;
  </code></pre>