Fragmet和Viewpager 实现每个Frag都请求网络

FragMent，ViewPager 实现每个页面都请求网络。

/** Automatically generated file. DO NOT MODIFY */
package com.example.text;

public final class BuildConfig {
    public final static boolean DEBUG = true;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2015-09-14 13:46  Text\
     文件         622  2015-09-14 13:46  Text\.classpath
     文件         840  2015-09-14 13:46  Text\.project
     目录           0  2015-08-05 13:56  Text\.settings\
     文件         598  2015-08-05 13:56  Text\.settings\org.eclipse.jdt.core.prefs
     文件         859  2015-09-14 13:46  Text\AndroidManifest.xml
     目录           0  2015-09-14 13:46  Text\assets\
     目录           0  2015-10-28 15:02  Text\bin\
     文件         859  2015-09-16 15:01  Text\bin\AndroidManifest.xml
     目录           0  2015-10-08 09:29  Text\bin\classes\
     文件     1329840  2015-10-28 15:02  Text\bin\classes.dex
     目录           0  2015-10-08 09:29  Text\bin\classes\com\
     目录           0  2015-10-08 09:29  Text\bin\classes\com\example\
     目录           0  2015-10-28 14:51  Text\bin\classes\com\example\text\
     文件         341  2015-10-08 09:29  Text\bin\classes\com\example\text\BuildConfig.class
     文件         757  2015-10-28 14:36  Text\bin\classes\com\example\text\FragmentOne$1.class
     文件        1560  2015-10-28 14:36  Text\bin\classes\com\example\text\FragmentOne.class
     文件         769  2015-10-28 14:37  Text\bin\classes\com\example\text\FragmentThree$1.class
     文件        1570  2015-10-28 14:37  Text\bin\classes\com\example\text\FragmentThree.class
     文件         757  2015-10-28 14:53  Text\bin\classes\com\example\text\FragmentTwo$1.class
     文件        1560  2015-10-28 14:53  Text\bin\classes\com\example\text\FragmentTwo.class
     文件        1237  2015-10-28 15:02  Text\bin\classes\com\example\text\MainActivity$1.class
     文件        1054  2015-10-28 15:02  Text\bin\classes\com\example\text\MainActivity$2.class
     文件         990  2015-10-28 15:02  Text\bin\classes\com\example\text\MainActivity$FragAdapter.class
     文件        2995  2015-10-28 15:02  Text\bin\classes\com\example\text\MainActivity.class
     文件         334  2015-10-28 14:51  Text\bin\classes\com\example\text\R$attr.class
     文件         455  2015-10-28 14:51  Text\bin\classes\com\example\text\R$dimen.class
     文件         533  2015-10-28 14:51  Text\bin\classes\com\example\text\R$drawable.class
     文件         527  2015-10-28 14:51  Text\bin\classes\com\example\text\R$id.class
     文件         496  2015-10-28 14:51  Text\bin\classes\com\example\text\R$layout.class
     文件         382  2015-10-28 14:51  Text\bin\classes\com\example\text\R$menu.class
............此处省略81个文件信息