Android中RecyclerView点击item展开列表详细内容（超简单实现）

来到公司的第一个任务就是: 一个列表页面, item 中只显示一个时间跟标题, 然后通过点击 Itme 在列表中展开详细信息.，代码复制粘贴就可以用了

package com.hbh.cl.expandrecyclerviewdemo;

import android.content.Context;
import android.support.test.InstrumentationRegistry;
import android.support.test.runner.AndroidJUnit4;

import org.junit.Test;
import org.junit.runner.RunWith;

import static org.junit.Assert.*;

/**
 * Instrumentation test which will execute on an Android device.
 *
 * @see Testing documentation
 */
@RunWith（AndroidJUnit4.class）
public class ExampleInstrumentedTest {
    @Test
    public void useAppContext（） throws Exception {
        // Context of the app under test.
        Context appContext = InstrumentationRegistry.getTargetContext（）;

        assertEquals（“com.hbh.cl.expandrecyclerviewdemo“ appContext.getPackageName（））;
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\
     文件         118  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.gitignore
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\
     文件         686  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\compiler.xml
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\copyright\
     文件          74  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\copyright\profiles_settings.xml
     文件         271  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\encodings.xml
     文件         626  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\gradle.xml
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\inspectionProfiles\
     文件         660  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\inspectionProfiles\Project_Default.xml
     文件         235  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\inspectionProfiles\profiles_settings.xml
     文件        2957  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\misc.xml
     文件         381  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\modules.xml
     文件         564  2017-04-22 09:47  ExpandRecyclerViewDemo-master\.idea\runConfigurations.xml
     文件         156  2017-04-22 09:47  ExpandRecyclerViewDemo-master\README.md
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\
     文件           7  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\.gitignore
     文件         929  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\build.gradle
     文件         655  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\proguard-rules.pro
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\androidTest\
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\androidTest\java\
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\androidTest\java\com\
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\androidTest\java\com\hbh\
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\androidTest\java\com\hbh\cl\
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\androidTest\java\com\hbh\cl\expandrecyclerviewdemo\
     文件         770  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\androidTest\java\com\hbh\cl\expandrecyclerviewdemo\ExampleInstrumentedTest.java
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\main\
     文件         673  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\main\AndroidManifest.xml
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\main\java\
     目录           0  2017-04-22 09:47  ExpandRecyclerViewDemo-master\app\src\main\java\com\
............此处省略53个文件信息