android studio 导入 PullToRefresh

// 下载  https://github.com/chrisbanes/Android-PullToRefresh  // 解压，得到 extras，sample，library(主要)  Android-PullToRefresh-master -> library  // 在你项目的根目录创建一个lib目录  [PATH]  [app]      [src]      [res]      [build]      build.gradle      ...  [build]  [gradle]  [lib]      // 将 library 重名名为 pull      [pull]          [src]          [res]          [build]          ...   build.gradle  settings.gradle  ...  // 修改 settings.gradle   include ':app', ':lib:pull'  // 修改 [app]/build.gradle  dependencies {      // Library      compile project(':lib:pull')  }  // 创建 [lib]/[pull]/build.gradle  apply plugin: 'android-library'  android {      compileSdkVersion 17      buildToolsVersion "21.1.2"      sourceSets {      main {          manifest.srcFile 'AndroidManifest.xml'          java.srcDirs = ['src']          resources.srcDirs = ['src']          aidl.srcDirs = ['aidl']          renderscript.srcDirs = ['src']          res.srcDirs = ['res']          assets.srcDirs = ['assets']      }      }  }  // 完成 

使用 PullToRefresh 刷新 ListView

//  在 activity_main.xml 增加一个 PullToRefreshListView  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"      android:layout_width="match_parent"      android:layout_height="match_parent" >      <com.handmark.pulltorefresh.library.PullToRefreshListView      android:id="@+id/left_drawer"      android:layout_width="240dp"      android:layout_height="match_parent"      android:layout_gravity="start"      android:choiceMode="singleChoice"      android:dividerHeight="1px"      android:divider="#ff000000"      android:background="#ffffffff"      android:layout_alignParentTop="true"      android:layout_alignParentEnd="true"      android:layout_alignParentStart="true" />  </RelativeLayout>  // 在 MainActivity  public class MainActivity extends Activity {      PullToRefreshListView lv;      private String[] mListTitle = {"姓名", "性别", "年龄", "居住地", "邮箱"};      private String[] mListStr = {"雨松MOMO", "男", "25", "北京",          "xuanyusong@gmail.com"};      ListView mListView = null;      ArrayList<Map<String, Object>> mData = new ArrayList<Map<String, Object>>();      @Override      protected void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      setContentView(R.layout.activity_main);      // 获取 PullToRefreshListView View      lv = (PullToRefreshListView) findViewById(R.id.left_drawer);      // ....      int lengh = mListTitle.length;      for (int i = 0; i < lengh; i++) {          Map<String, Object> item = new HashMap<String, Object>();          item.put("title", mListTitle[i]);          item.put("text", mListStr[i]);          mData.add(item);      }      // ...      SimpleAdapter adapter = new SimpleAdapter(this, mData, android.R.layout.simple_list_item_2,           new String[]{"title", "text"}, new int[]{android.R.id.text1, android.R.id.text2});      // 将 SimpleAdapter 设置到 PullToRefreshListView      lv.setAdapter(adapter);      // 刷新事件监听      lv.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener<ListView>() {          @Override          public void onRefresh(PullToRefreshBase<ListView> refreshView) {          // ...          new AsyncTask<Void, Void, Void>() {              @Override              protected Void doInBackground(Void... params) {              // 处理刷新任务              try {                  Thread.sleep(3000);              } catch (InterruptedException e) {                  e.printStackTrace();              }              return null;              }              @Override              protected void onPostExecute(Void reslst)              {              // 更行内容，通知 PullToRefresh 刷新结束              lv.onRefreshComplete();              }          }.execute();          }      });      }  }