快速ArrayList加载

在下面的代码我加载一个ArrayList数据一个接一个。快速ArrayList加载

此ArrayList用于ExpandableListView。所以它包含组和孩子。

每个组都有一个名称和一个描述。

每个孩子都有一个名字。

有些群体没有childern。

public class CategoriesExpandableList extends Activity implements OnChildClickListener, 
OnGroupClickListener, OnGroupExpandListener, OnGroupCollapseListener { 

private static Context mContext; 
private ExpandListAdapter ExpAdapter=null; 
private ArrayList<ExpandListGroup> ExpListItems; 
ArrayList<ExpandListGroup> list=null; 
private ExpandableListView ExpandList; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    this.requestWindowFeature(Window.FEATURE_NO_TITLE); 
    setContentView(R.layout.categoriesexpandable); 
    ExpandList = (ExpandableListView) findViewById(R.id.ExpList); 
    ExpListItems = SetStandardGroups(); 
    ExpAdapter = new ExpandListAdapter(CategoriesExpandableList.this, ExpListItems); 
    ExpandList.setAdapter(ExpAdapter); 
    ExpandList.setOnGroupClickListener(this); 
    ExpandList.setOnChildClickListener(this); 
    mContext=this; 
} 

public ArrayList<ExpandListGroup> SetStandardGroups() { 

      ArrayList<ExpandListGroup> list = new ArrayList<ExpandListGroup>(); 
      ArrayList<ExpandListChild> list2 = new ArrayList<ExpandListChild>(); 

      ExpandListGroup gru0 = new ExpandListGroup(); 
      gru0.setName("My Favorites"); 
      gru0.setDescription("My favourite points of interest"); 
      gru0.setItems(list2); 
      list2 = new ArrayList<ExpandListChild>(); 

      ExpandListGroup gru1 = new ExpandListGroup(); 
      gru1.setName("Essentials"); 
      gru1.setDescription("Very essential points of interest"); 
      gru1.setItems(list2); 
      list2 = new ArrayList<ExpandListChild>(); 

      ExpandListGroup gru2 = new ExpandListGroup(); 
      gru2.setName("Sights"); 
      gru2.setDescription("Beautiful sights you have to visit"); 
      gru2.setItems(list2); 
      list2 = new ArrayList<ExpandListChild>(); 

      ExpandListGroup gru3 = new ExpandListGroup(); 
      gru3.setName("Beaches"); 
      gru3.setDescription("Beaches near Agios Nikolaos"); 
      ExpandListChild ch3_0 = new ExpandListChild(); 
      ch3_0.setName("In town"); 
      ch3_0.setTag(null); 
      list2.add(ch3_0); 
      ExpandListChild ch3_1 = new ExpandListChild(); 
      ch3_1.setName("Outside town"); 
      ch3_1.setTag(null); 
      list2.add(ch3_1); 
      gru3.setItems(list2); 
      list2 = new ArrayList<ExpandListChild>(); 

      list.add(gru0); 
      list.add(gru1); 
      list.add(gru2); 
      list.add(gru3); 

      return list; 
     }

}

我想知道是否有在ArrayList中加载这些数据的快捷方式。例如，通过调用像这样的方法：

addPoint(String groupname, String groupdescription, String child01) 

addPoint("Banks", "Banks and ATMs", "Only banks") 
addPoint("Banks", "Banks and ATMs", "Only ATMs") 

// Here i have only a group and no children... 
addPoint("Sights", "Beautiful sights to visit", "")

来源

2013-07-08 N.K.

public ArrayList<ExpandListGroup> SetStandardGroups() { 

      ArrayList<ExpandListGroup> list = new ArrayList<ExpandListGroup>(); 
      ArrayList<ExpandListChild> list2 = new ArrayList<ExpandListChild>(); 

      String[][] expandablelist={ {"My Favorites", "My favourite points of interest","","","","","","","","","",""}, 
        {"Essentials", "Very essential points of interest","","","","","","","","","",""}, 
        {"Sights", "Beautiful sights you have to visit","","","","","","","","","",""}, 
        {"Beaches", "Nice beaches","In town","Around town","","","","","","","",""}, 
        {"Banks", "Banks and ATMs","","","","","","","","","",""}, 
        {"Pharmacies", "All pharmacies near you","","","","","","","","","",""}, 
        {"Doctors", "Doctors in case of emergency","Pediatricians","Pathologists","General doctors","Eye doctors","Surgeons","Otorhinolayngologists","Orthopaedists","Gynecologists","Dermatologists","Cardiologists"} 
      }; 

      for(int i=0; i<=6; i++) { 

       System.out.println("i= "+i);  
       ExpandListGroup gru = new ExpandListGroup(); 
       gru.setName(expandablelist[i][0]); 
       gru.setDescription(expandablelist[i][1]); 


       for(int j=2; j<=11; j++) { 
        System.out.println("j= "+j); 
        System.out.println("length= "+expandablelist[i][j].length()); 
        if(expandablelist[i][j].length()!=0) { 
         ExpandListChild chld = new ExpandListChild(); 
         chld.setName(expandablelist[i][j]); 
         chld.setTag(null); 
         list2.add(chld); 
        } 
       } 
       if(list2!=null) { 
        gru.setItems(list2); 
       } 
       list2 = new ArrayList<ExpandListChild>(); 
       list.add(gru); 
      } 
}

我已经founnd办法像你的代码见上从阵列装入我的ArrayList。感谢您阅读我的问题。我相信有更好的解决方案，如果我有一些时间，我会尝试弄清楚。

来源

2013-07-08 13:17:29

快速ArrayList加载

回答

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