关于IllegalStateException: The specified child already has a parent.

IllegalStateException: The specified child already has a parent.我的博客中有文章讲解

/* AUTO-GENERATED FILE.  DO NOT MODIFY.
 *
 * This class was automatically generated by the
 * aapt tool from the resource data it found.  It
 * should not be modified by hand.
 */

package com.yaozq.illStateException;

public final class R {
    public static final class attr {
    }
    public static final class drawable {
        public static final int ic_launcher=0x7f020000;
        public static final int yaozq=0x7f020001;
    }
    public static final class id {
        public static final int child=0x7f050001;
        public static final int parent=0x7f050000;
    }
    public static final class layout {
        public static final int main=0x7f030000;
    }
    public static final class string {
        public static final int app_name=0x7f040001;
        public static final int hello=0x7f040000;
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件        364  2012-03-10 14:33  yaozq_illStateException\.classpath

     文件        859  2012-03-10 14:33  yaozq_illStateException\.project

     文件        208  2012-03-10 14:33  yaozq_illStateException\.settings\org.eclipse.jdt.core.prefs

     文件        756  2012-03-10 14:33  yaozq_illStateException\AndroidManifest.xml

     文件       1131  2012-03-10 15:16  yaozq_illStateException\bin\classes\com\yaozq\illStateException\IllStateExceptionActivity.class

     文件        367  2012-03-10 15:16  yaozq_illStateException\bin\classes\com\yaozq\illStateException\R$attr.class

     文件        463  2012-03-10 15:16  yaozq_illStateException\bin\classes\com\yaozq\illStateException\R$drawable.class

     文件        440  2012-03-10 15:16  yaozq_illStateException\bin\classes\com\yaozq\illStateException\R$id.class

     文件        421  2012-03-10 15:16  yaozq_illStateException\bin\classes\com\yaozq\illStateException\R$layout.class

     文件        454  2012-03-10 15:16  yaozq_illStateException\bin\classes\com\yaozq\illStateException\R$string.class

     文件        594  2012-03-10 15:16  yaozq_illStateException\bin\classes\com\yaozq\illStateException\R.class

     文件       2744  2012-03-10 15:16  yaozq_illStateException\bin\classes.dex

     文件       3966  2012-03-10 14:37  yaozq_illStateException\bin\res\drawable-hdpi\ic_launcher.png

     文件       1537  2012-03-10 14:37  yaozq_illStateException\bin\res\drawable-ldpi\ic_launcher.png

     文件       2200  2012-03-10 14:37  yaozq_illStateException\bin\res\drawable-mdpi\ic_launcher.png

     文件       4760  2012-03-10 15:16  yaozq_illStateException\bin\res\drawable-mdpi\yaozq.PNG

     文件      15710  2012-03-10 15:16  yaozq_illStateException\bin\resources.ap_

     文件      19375  2012-03-10 15:16  yaozq_illStateException\bin\yaozq_illStateException.apk

     文件        853  2012-03-10 15:16  yaozq_illStateException\gen\com\yaozq\illStateException\R.java

     文件       1248  2012-03-10 14:33  yaozq_illStateException\proguard.cfg

     文件        360  2012-03-10 14:34  yaozq_illStateException\project.properties

     文件       4147  2012-03-10 14:33  yaozq_illStateException\res\drawable-hdpi\ic_launcher.png

     文件       1723  2012-03-10 14:33  yaozq_illStateException\res\drawable-ldpi\ic_launcher.png

     文件       2574  2012-03-10 14:33  yaozq_illStateException\res\drawable-mdpi\ic_launcher.png

     文件       5755  2011-11-29 20:39  yaozq_illStateException\res\drawable-mdpi\yaozq.PNG

     文件        611  2012-03-10 15:09  yaozq_illStateException\res\layout\main.xml

     文件        206  2012-03-10 14:33  yaozq_illStateException\res\values\strings.xml

     文件       1169  2012-03-10 15:16  yaozq_illStateException\src\com\yaozq\illStateException\IllStateExceptionActivity.java

     目录          0  2012-03-10 14:37  yaozq_illStateException\bin\classes\com\yaozq\illStateException

     目录          0  2012-03-10 14:33  yaozq_illStateException\bin\classes\com\yaozq

............此处省略27个文件信息