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Android切近实战(三)

2017-11-13 1092
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简介：

C#版本的界面如下，我记得我在java实战篇也写过这个界面

wKiom1M3wj-QCk5TAAGjwrCHhII331.jpg

那么今天我们来看一下Android中是如何实现这个东西。首先先来看一下Service端。

首先是新增加一个asmx。

wKioL1M3wvnxMOmZAADr9vS13I0761.jpg

我们来看一下它内部提供的方法

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[WebService(Namespace =  "http://tempuri.org/" )]
    [WebServiceBinding(ConformsTo = WsiProfiles.None)]
    [System.ComponentModel.ToolboxItem( false )]
    // 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消注释以下行。
    // [System.Web.Script.Services.ScriptService]
    public  class  SystemCode : System.Web.Services.WebService
    {
        [WebMethod(Description =  "添加系统参数" )]
        public  CommonResponse AddSystemCode(SystemCodeEntity systemCodeEntity, string  userID)
        {
            return  SystemCodeBiz.GetInstance().AddSystemCode(systemCodeEntity,userID);
        }
        [WebMethod(Description =  "修改系统参数" )]
        public  CommonResponse UpdateSystemCode(SystemCodeEntity systemCodeEntity,  string  userID)
        {
            return  SystemCodeBiz.GetInstance().UpdateSystemCode(systemCodeEntity, userID);
        }
        [WebMethod(Description =  "获取系统参数列表" , MessageName =  "GetSytemCodeEntityList" )]
        public  List<SystemCodeEntity> GetSytemCodeEntityList()
        {
            return  SystemCodeBiz.GetInstance().GetSytemCodeEntityList();
        }
        [WebMethod(Description =  "获取系统参数列表" , MessageName =  "GetSytemCodeEntityListByEname" )]
        public  List<SystemCodeEntity> GetSytemCodeEntityList( string  ename)
        {
            return  SystemCodeBiz.GetInstance().GetSytemCodeEntityList(ename);
        }
    }

第一个方法是添加系统参数，第二个方法是修改系统参数，第三个方法是获取系统参数列表，第四个方法是根据ename获取系统参数列表。如果不知道什么是ename，请看第一篇。

OK,这四个方法对应的Biz层的代码如下

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namespace  GRLC.Biz
{
     public  class  SystemCodeBiz
     {
         static  SystemCodeBiz systemCodeBiz =  new  SystemCodeBiz();
         private  SystemCodeBiz()
         { }
         public  static  SystemCodeBiz GetInstance()
         {
             return  systemCodeBiz;
         }
         const  string  moduleName =  "SystemCodeModule" ;
         private  string  GetMessageByName( string  msgName)
         {
             return  CommonFunction.GetMessageByModuleAndName(moduleName, msgName);
         }
         private  string  EnameExists
         {
             get
             {
                 return  this .GetMessageByName( "EnameHasExists" );
             }
         }
         private  string  DataHasExists
         {
             get
             {
                 return  this .GetMessageByName( "DataHasExists" );
             }
         }
         private  string  AddFailed
         {
             get
             {
                 return  this .GetMessageByName( "AddFailed" );
             }
         }
         private  string  UpdateFailed
         {
             get
             {
                 return  this .GetMessageByName( "UpdateFailed" );
             }
         }
         private  string  DisplayContentExists
         {
             get
             {
                 return  this .GetMessageByName( "DisplayContentExists" );
             }
         }
         public  CommonResponse AddSystemCode(SystemCodeEntity systemCodeEntity,  string  userID)
         {
             bool  isEnameExists = SystemCodeDAL.GetInstance().CheckIfEnameExists(systemCodeEntity.Ename);
             if  (isEnameExists)
             {
                 return  new  CommonResponse() { IsSuccess =  false , ErrorMessage = EnameExists };
             }
             bool  isDataExists = SystemCodeDAL.GetInstance().CheckIfDataExists(systemCodeEntity.Ename, systemCodeEntity.Cname);
             if  (isDataExists)
             {
                 return  new  CommonResponse() { IsSuccess =  false , ErrorMessage = DataHasExists };
             }
             bool  isDisplayContentExists = SystemCodeDAL.GetInstance().CheckIfDisplayContentExists(systemCodeEntity.Ename, systemCodeEntity.DisplayContent);
             int  suc = SystemCodeDAL.GetInstance().AddSystemCode(systemCodeEntity, userID);
             if  (suc > 0)
             {
                 return  new  CommonResponse() { IsSuccess =  true  };
             }
             else
             {
                 return  new  CommonResponse() { IsSuccess =  false , ErrorMessage = AddFailed };
             }
         }
         public  CommonResponse UpdateSystemCode(SystemCodeEntity systemCodeEntity,  string  userID)
         {
             bool  isDisplayContentExists = SystemCodeDAL.GetInstance().CheckIfDisplayContentExists(systemCodeEntity.Ename, systemCodeEntity.DisplayContent);
             if  (isDisplayContentExists)
             {
                 return  new  CommonResponse() { IsSuccess =  false , ErrorMessage = DisplayContentExists };
             }
             int  suc = SystemCodeDAL.GetInstance().UpdateSystemCode(systemCodeEntity, userID);
             if  (suc > 0)
             {
                 return  new  CommonResponse() { IsSuccess =  true  };
             }
             else
             {
                 return  new  CommonResponse() { IsSuccess =  false , ErrorMessage = UpdateFailed };
             }
         }
         public  List<SystemCodeEntity> GetSytemCodeEntityList()
         {
             return  SystemCodeDAL.GetInstance().GetSytemCodeEntityList();
         }
         public  List<SystemCodeEntity> GetSytemCodeEntityList( string  ename)
         {
             List<SystemCodeEntity> systemCodeEntityList =  this .GetSytemCodeEntityList();
             if  (systemCodeEntityList !=  null )
             {
                 return  systemCodeEntityList.Where(s => s.Ename == ename).OrderBy(s => s.Data).ToList();
             }
             return  systemCodeEntityList;
         }
     }
}

对应的DAL层的方法如下

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namespace  GRLC.DAL
{
     public  class  SystemCodeDAL
     {
         static  SystemCodeDAL systemCodeDAL =  new  SystemCodeDAL();
         private  SystemCodeDAL()
         { }
         public  static  SystemCodeDAL GetInstance()
         {
             return  systemCodeDAL;
         }
         public  int  AddSystemCode(SystemCodeEntity systemCodeEntity,  string  userID)
         {
             using  (BonusEntities bonusEntities =  new  BonusEntities())
             {
                 Codes code =  new  Codes();
                 code.ename = systemCodeEntity.Ename;
                 code.cname = systemCodeEntity.Cname;
                 code.data = systemCodeEntity.Data;
                 code.display_content = systemCodeEntity.DisplayContent;
                 code.create_time = DateTime.Now;
                 code.lastmodify_date = DateTime.Now;
                 code.lastmodifier = userID;
                 code.create_person = userID;
                 bonusEntities.Codes.Add(code);
                 return  bonusEntities.SaveChanges();
             }
         }
         public  int  UpdateSystemCode(SystemCodeEntity systemCodeEntity,  string  userID)
         {
             using  (BonusEntities bonusEntities =  new  BonusEntities())
             {
                 Codes code =  new  Codes();
                 code.ename = systemCodeEntity.Ename;
                 code.cname = systemCodeEntity.Cname;
                 code.data = systemCodeEntity.Data;
                 code.display_content = systemCodeEntity.DisplayContent;
                 code.lastmodify_date = DateTime.Now;
                 code.lastmodifier = userID;
                 bonusEntities.Entry(code).State = EntityState.Modified;
                 return  bonusEntities.SaveChanges();
             }
         }
         public  bool  CheckIfEnameExists( string  ename)
         {
             using  (BonusEntities bonusEntities =  new  BonusEntities())
             {
                 return  bonusEntities.Codes.Any(c => c.ename == ename);
             }
         }
         public  bool  CheckIfDataExists( string  ename,  string  data)
         {
             using  (BonusEntities bonusEntities =  new  BonusEntities())
             {
                 return  bonusEntities.Codes.Any(c => c.ename == ename && c.data == data);
             }
         }
         public  bool  CheckIfDisplayContentExists( string  ename,  string  displayContent)
         {
             using  (BonusEntities bonusEntities =  new  BonusEntities())
             {
                 return  bonusEntities.Codes.Any(c => c.ename == ename && c.display_content == displayContent);
             }
         }
         public  List<SystemCodeEntity> GetSytemCodeEntityList()
         {
             List<SystemCodeEntity> systemCodeEntityList =  new  List<SystemCodeEntity>();
             using  (BonusEntities bonusEntities =  new  BonusEntities())
             {
                 SystemCodeEntity systemCodeEntity =  null ;
                 List<Codes> codeList = bonusEntities.Codes.ToList();
                 foreach  ( var  code  in  codeList)
                 {
                     systemCodeEntity =  new  SystemCodeEntity();
                     systemCodeEntity.Cname = code.cname;
                     systemCodeEntity.Ename = code.ename;
                     systemCodeEntity.Data = code.data;
                     systemCodeEntity.DisplayContent = code.display_content;
                     systemCodeEntityList.Add(systemCodeEntity);
                 }
             }
             return  systemCodeEntityList;
         }
     }
}

OK，完了我们部署Service进行访问

wKiom1M3xP-hl1ZYAAFjyeymGyk426.jpg

点击第三个方法，如下,输入ename,点击调用

wKiom1M3xWPBacCEAAD0z_P8Ti4816.jpg

点击调用返回的xml数据如下

wKiom1M3xaXgYiArAAMQZMREJGE177.jpg


OK，这证明我们的service没问题。接下来看android部分，首先从index界面跳到系统参数界面

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imageBtnSystemCode=(ImageButton) this .findViewById(R.id.imageBtnSystemCode);
         imageBtnSystemCode.setOnClickListener( new  OnClickListener() {
             public  void  onClick(View v) {
                 Intent intent =  new  Intent();
                 intent.setClass(index. this ,systemcode. class );
                 startActivityForResult(intent,  0 );
             }
         });

SystemCode界面的代码如下

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<? xml  version = "1.0"  encoding = "utf-8" ?>
< LinearLayout  xmlns:android = "http://schemas.android.com/apk/res/android"
     android:layout_width = "fill_parent"  android:layout_height = "fill_parent" >
     < ExpandableListView  android:id = "@+id/expandableListView"
         android:dividerHeight = "1dp"
         android:divider = "@color/yellow"
         android:layout_width = "fill_parent"  android:layout_height = "wrap_content" >
     </ ExpandableListView >
</ LinearLayout >

只有一个ExpandedListView。在后台代码中，我们首先会初始化数据

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public  void  onCreate(Bundle savedInstanceState) {
         super .onCreate(savedInstanceState);
         setContentView(R.layout.systemcode);
         InitCodesInfo();
     }

我们看一下这个InitCodesInfo方法

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private  void  InitCodesInfo() {
         expandableListView = (ExpandableListView) findViewById(R.id.expandableListView);
         List<Map<String, String>> groups =  new  ArrayList<Map<String, String>>();
         Map<String, String> root =  new  HashMap<String, String>();
         root.put( "root" ,  "系统参数" );
         groups.add(root);
         SoapObject soapChild =  null ;
         List<String> enameList =  new  ArrayList<String>();
         Map<String, String> leaf =  null ;
         List<Map<String, String>> leafList =  new  ArrayList<Map<String, String>>();
         leaves =  new  ArrayList<List<Map<String, String>>>();
         SoapObject soapObject =  this .GetSystemCodeList();
         for  ( int  i =  0 ; i < soapObject.getPropertyCount(); i++) {
             soapChild = (SoapObject) soapObject.getProperty(i);
             String ename = soapChild.getProperty( "Ename" ).toString();
             String cname = soapChild.getProperty( "Cname" ).toString();
             if  (!enameList.contains(ename)) {
                 leaf =  new  HashMap<String, String>();
                 leaf.put( "Key" , ename);
                 leaf.put( "Name" , cname);
                 leafList.add(leaf);
                 enameList.add(ename);
             }
         }
         leaves.add(leafList);
         SimpleExpandableListAdapter adapter =  new  SimpleExpandableListAdapter(
                 this , groups, R.layout.expandlist_group,
                 new  String[] {  "root"  },  new  int [] { R.id.textGroup }, leaves,
                 R.layout.expandlist_child,  new  String[] {  "Key" ,  "Name"  },
                 new  int [] { R.id.textChildID, R.id.textChildName });
         expandableListView.setAdapter(adapter);
         expandableListView.setOnChildClickListener(listener);
         expandableListView.expandGroup( 0 );
     }

在这个方法中首先要看的是GetSystemCodeList方法，这个方法就是调用webservice提供的GetSytemCodeEntityList方法。我们看下代码

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private  SoapObject GetSystemCodeList() {
         SoapObject request =  new  SoapObject(NAMESPACE, METHOD_NAME);
         SoapSerializationEnvelope soapEnvelope =  new  SoapSerializationEnvelope(
                 SoapEnvelope.VER11);
         soapEnvelope.dotNet =  true ;
         soapEnvelope.setOutputSoapObject(request);
         HttpTransportSE httpTS =  new  HttpTransportSE(URL);
         soapEnvelope.bodyOut = httpTS;
         soapEnvelope.setOutputSoapObject(request); // 设置请求参数
         try  {
             httpTS.call(SOAP_ACTION, soapEnvelope);
         }  catch  (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }  catch  (XmlPullParserException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
         SoapObject result =  null ;
         try  {
             result = (SoapObject) soapEnvelope.getResponse();
         }  catch  (SoapFault e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
         return  result;
     }

NameSpace，MethodName等参数如下

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final  static  String NAMESPACE =  "http://tempuri.org/" ;
     final  static  String METHOD_NAME =  "GetSytemCodeEntityList" ;
     final  static  String SOAP_ACTION =  "http://tempuri.org/GetSytemCodeEntityList" ;
     final  static  String URL =  "http://10.0.2.2:2000/SystemCode.asmx?wsdl" ;

OK，这个掉用完之后，就是构造数据了，我们先看一下图

wKioL1M3yr2iQY-qAADT8Ova984685.jpg

那么这个listView的数据正是由那个for循环实现的。因为我们只有一个根节点，所以我们只加了一个

root.put("root", "系统参数");

然后接下来我们要构造出下面的子节点，我们把ename当做key，把cname当做value加进HashMap<String, String>中。每一次循环，我们会得到一条数据加进Map<String,String>中，再把它加进List<Map<String,String>>中。最后将List<Map<String,String>>加进List<List<Map<String, String>>>中。数据构造好以后，就是展示了

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SimpleExpandableListAdapter adapter =  new  SimpleExpandableListAdapter(
                 this , groups, R.layout.expandlist_group,
                 new  String[] {  "root"  },  new  int [] { R.id.textGroup }, leaves,
                 R.layout.expandlist_child,  new  String[] {  "Key" ,  "Name"  },
                 new  int [] { R.id.textChildID, R.id.textChildName });
         expandableListView.setAdapter(adapter);
         expandableListView.setOnChildClickListener(listener);
         expandableListView.expandGroup( 0 );

第一个参数是页面本身对象，第二个参数是根节点的数据，第三个参数是展示根节点的布局文件

wKiom1M3zSvRqcSnAADY-09ICb8982.jpg

一个是根节点的布局文件expandlist_group.xml，内容如下

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<? xml  version = "1.0"  encoding = "utf-8" ?>
< LinearLayout  xmlns:android = "http://schemas.android.com/apk/res/android"
     android:layout_width = "fill_parent"  android:layout_height = "fill_parent"
     android:orientation = "vertical" >
     < TextView  android:id = "@+id/textGroup"  android:layout_width = "fill_parent"
         android:layout_height = "fill_parent"  android:paddingLeft = "40px"
         android:paddingTop = "6px"  android:paddingBottom = "6px"  android:textSize = "12sp"
         android:textColor = "@color/red"
         android:text = "No data" >
     </ TextView >
</ LinearLayout >

另一个是子节点的布局文件expandlist_child.xml，内容如下

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<? xml  version = "1.0"  encoding = "utf-8" ?>
< LinearLayout  xmlns:android = "http://schemas.android.com/apk/res/android"
     android:layout_width = "fill_parent"  android:layout_height = "fill_parent"
     android:orientation = "horizontal" >
     < ImageView  android:id = "@+id/civ"  android:layout_height = "wrap_content"
         android:layout_width = "wrap_content"  android:src = "@drawable/main_system_code"
         android:maxWidth = "20dp"  android:maxHeight = "20dp"  android:padding = "5dp"  />
     < TextView  android:id = "@+id/textChildID"  android:layout_width = "wrap_content"
         android:layout_height = "wrap_content"  android:paddingLeft = "30px"
         android:textColor = "@color/blue"
         android:paddingTop = "10px"
         android:paddingBottom = "10px"
         android:textSize = "20sp"  />
     < TextView  android:id = "@+id/textChildName"  android:layout_width = "wrap_content"
         android:textColor = "@color/yellow"
         android:textSize = "20sp"
         android:layout_height = "wrap_content"  android:paddingLeft = "30px"
         android:text = "No data"  />
</ LinearLayout >

第四个参数是根节点的key值root，如果你有很多的根节点，那么这里可以有多个。第五个参数是设置用expandlist_group.xml布局模版中哪个控件来显示根节点的内容。第六个参数是子节点的数据，第七个参数是要展示子节点内容的布局模版。第八个参数是设置要显示的字段，第九个参数每个参数对应的展示控件。OK，最终运行出来的效果如上图所示。


OK，接下来我们看看点击某个子节点，展示其详细内容的界面的部分。先看一下跳转

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private  OnChildClickListener listener =  new  OnChildClickListener() {
         public  boolean  onChildClick(ExpandableListView parent, View v,
                 int  groupPosition,  int  childPosition,  long  id) {
             Object ename = leaves.get( 0 ).get(childPosition).values().toArray()[ 1 ];
                                                                                                                                                                                                      
             Intent intent =  new  Intent();
             Bundle bundle =  new  Bundle();
             bundle.putString( "ename" , ename.toString());
             intent.putExtras(bundle);
             intent.setClass(systemcode. this , systemcodedetail. class );
             startActivityForResult(intent,  0 );
             finish();
             return  false ;
         }
     };

我们首先会拿到ename，这个ename在这里的话，因为leaves集合中只有一项。所以在这里是get(0)。

然后我们根据position，即第一行就是0，第二行就是1。根据position我们拿到点击的行的数据values。那么values[1]就是ename，values[0]就是cname。

wKioL1M312_QNxUxAACHLlskyJg817.jpg

拿到ename直接传到systemcodedetail界面。systemcodedetailUI代码如下

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<? xml  version = "1.0"  encoding = "utf-8" ?>
< LinearLayout  android:id = "@+id/ls"
   xmlns:android = "http://schemas.android.com/apk/res/android"
   android:layout_width = "match_parent"
   android:layout_height = "match_parent"
   android:orientation = "horizontal" >
     < ListView  android:id = "@+id/codelistView"
     android:layout_width = "fill_parent"
     android:layout_height = "fill_parent" >
     </ ListView >
</ LinearLayout >

其后台接收到ename之后会初始化数据

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private  void  InitData() {
         Bundle bundle = getIntent().getExtras();
         String enameValue = bundle.getString( "ename" );
         List<Map<String, Object>> dataList =  new  ArrayList<Map<String, Object>>();
         Map<String, Object> dataMap =  null ;
         SoapObject soapObject =  this .GetSystemCodeListByEname(enameValue);
         for  ( int  i =  0 ; i < soapObject.getPropertyCount(); i++) {
             SoapObject soapObj = (SoapObject) soapObject.getProperty(i);
             dataMap =  new  HashMap<String, Object>();
             String displayContent = soapObj.getProperty( "DisplayContent" )
                     .toString();
             String cname = soapObj.getProperty( "Cname" ).toString();
             String data = soapObj.getProperty( "Data" ).toString();
             dataMap.put( "displaycontent" , displayContent);
             dataMap.put( "cname" , cname);
             dataMap.put( "data" , data);
             dataList.add(dataMap);
         }
         SimpleAdapter simpleAdapter =  new  SimpleAdapter( this , dataList,
                 R.layout.systemcodedetailtemplate,  new  String[] {  "cname" ,
                         "data" ,  "displaycontent"  },  new  int [] { R.id.labCname,
                         R.id.labData,R.id.labDisplay });
         this .codeListView.setAdapter(simpleAdapter);
     }

他获取数据的方法是GetSystemCodeListByEname

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private  SoapObject GetSystemCodeListByEname(String ename) {
         SoapObject request =  new  SoapObject(NAMESPACE, METHOD_NAME);
         PropertyInfo pi =  new  PropertyInfo();
         pi.setName( "ename" );
         pi.setType(String. class );
         pi.setValue(ename);
         request.addProperty(pi);
         SoapSerializationEnvelope soapEnvelope =  new  SoapSerializationEnvelope(
                 SoapEnvelope.VER11);
         soapEnvelope.dotNet =  true ;
         soapEnvelope.setOutputSoapObject(request);
         HttpTransportSE httpTS =  new  HttpTransportSE(URL);
         soapEnvelope.bodyOut = httpTS;
         soapEnvelope.setOutputSoapObject(request); // 设置请求参数
         try  {
             httpTS.call(SOAP_ACTION, soapEnvelope);
         }  catch  (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }  catch  (XmlPullParserException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
         SoapObject result =  null ;
         try  {
             result = (SoapObject) soapEnvelope.getResponse();
         }  catch  (SoapFault e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
         return  result;
     }

其对应的NameSpace，Method_Name参数如下

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     final  static  String NAMESPACE =  "http://tempuri.org/" ;
     final  static  String METHOD_NAME =  "GetSytemCodeEntityListByEname" ;
     final  static  String SOAP_ACTION =  "http://tempuri.org/GetSytemCodeEntityListByEname" ;
/*  final static String URL = "http://10.0.2.2:2000/SystemCode.asmx?wsdl";*/
     final  static  String URL =  "http://172.19.73.18:2000/SystemCode.asmx?wsdl" ;

OK，在初始化方法中，我们构造出了List<Map<String, Object>>集合。

然后通过下面的方法呈现数据到界面

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SimpleAdapter simpleAdapter =  new  SimpleAdapter( this , dataList,
                 R.layout.systemcodedetailtemplate,  new  String[] {  "cname" ,
                         "data" ,  "displaycontent"  },  new  int [] { R.id.labCname,
                         R.id.labData,R.id.labDisplay });
         this .codeListView.setAdapter(simpleAdapter);

第一个参数当前Activity对象，第二个参数是数据源。第三个参数是展示数据的布局模版。如下

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<? xml  version = "1.0"  encoding = "utf-8" ?>
< RelativeLayout  xmlns:android = "http://schemas.android.com/apk/res/android"
     android:layout_width = "fill_parent"  android:layout_height = "75dp"
     android:paddingLeft = "10dp"  android:paddingRight = "10dp" >
     < ImageView  android:id = "@+id/img"  android:layout_height = "fill_parent"
         android:layout_width = "60dp"  android:src = "@drawable/userregister"
         android:layout_alignParentLeft = "true"  />
     < LinearLayout  android:orientation = "vertical"
         android:layout_height = "fill_parent"  android:layout_width = "fill_parent"
         android:gravity = "center_vertical"  android:layout_toRightOf = "@id/img"
         android:paddingLeft = "8dp" >
         < TextView  android:id = "@+id/labCname"  android:layout_width = "wrap_content"
             android:layout_height = "wrap_content"  android:textColor = "#cbcaca"
             android:textSize = "12dp"  />
         < TextView  android:id = "@+id/labData"  android:layout_width = "wrap_content"
             android:layout_height = "wrap_content"  android:textColor = "#cbcaca"
             android:textSize = "12dp"  />
         < TextView  android:id = "@+id/labDisplay"  android:layout_width = "wrap_content"
             android:layout_height = "wrap_content"  android:textColor = "#cbcaca"
             android:textSize = "12dp"  />
     </ LinearLayout >
     < LinearLayout  android:orientation = "horizontal"
         android:layout_alignParentRight = "true"
         android:layout_height = "wrap_content"
         android:layout_centerVertical = "true"
         android:layout_width = "wrap_content" >
         < Button  android:id = "@+id/btnUpdate"  android:text = "@string/btnUpdate"
             android:layout_width = "wrap_content"  android:layout_height = "fill_parent"  />
         < Button  android:id = "@+id/btnDelete"  android:text = "@string/btnDelete"
             android:layout_width = "wrap_content"  android:layout_height = "fill_parent"  />
     </ LinearLayout >
</ RelativeLayout >

OK，这个布局使用了相对布局和线性布局的嵌套。第四个参数是指要显示的字段。第五个参数是指分别显示这些字段的控件。OK，跑起来看看效果

wKioL1M31H6SDwViAAFkae8aAdk665.jpg

效果还凑合，至于修改和删除嘛，请留意下节。




本文转自 BruceAndLee 51CTO博客，原文链接：http://blog.51cto.com/leelei/1386896，如需转载请自行联系原作者


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