在android中的Listview分页

时间：2014-02-24 06:55:07

标签： android android-listview pagination

我有一个列表视图，其中显示了50个元素。我已决定对视图进行分页，因此在视图的每个部分上都有10个元素，然后单击下一个按钮以进入下一个10个元素。我如何设置10个数据？我按照这篇文章 http://rakhi577.wordpress.com/2013/05/20/listview-pagination-ex-2/ 这是我的代码。您可以帮助我解决我的代码或指南如何正确实现这个问题吗？

public class MainActivity extends ListActivity {


Context context;
Button btnSearch ;
EditText txtSearch;

private ProgressDialog pDialog;

// URL to get contacts JSON

    public int TOTAL_LIST_ITEMS = 50;
    public int NUM_ITEMS_PAGE   = 10;
    private int noOfBtns;
    private Button[] btns;


// JSON Node names
private static final String TAG_CONTACTS = "contacts";
private static final String TAG_ID = "id";
private static final String TAG_NAME = "name";
private static final String TAG_EMAIL = "email";
private static final String TAG_ADDRESS = "address";
private static final String TAG_GENDER = "gender";
private static final String TAG_PHONE = "phone";
private static final String TAG_PHONE_MOBILE = "mobile";
private static final String TAG_PHONE_HOME = "home";
private static final String TAG_PHONE_OFFICE = "office";

// contacts JSONArray
JSONArray contacts = null;

// Hashmap for ListView
ArrayList<HashMap<String, String>> contactList;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    btnSearch=(Button)findViewById(R.id.buttonSearch);
    txtSearch=(EditText)findViewById(R.id.Searchtext);




}

public String gotourl()
{


    final  EditText txtSearch=(EditText)findViewById(R.id.Searchtext);

     String ts=txtSearch.getText().toString();

     String url = "http://latest.bloomapi.com/api/search?limit=50&offset=0&key1=last_name&op1=eq&value1="+ts;

    return url ;
}

public void Searchfunction(View v)

{
    Btnfooter();
    //loadList(0);
    CheckBtnBackGroud(0);
    contactList = new ArrayList<HashMap<String, String>>();

    ListView lv = getListView();




    // Listview on item click listener
    lv.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {



            // getting values from selected ListItem
            String name = ((TextView) view.findViewById(R.id.name))
                    .getText().toString();
            String cost = ((TextView) view.findViewById(R.id.email))
                    .getText().toString();
            String description = ((TextView) view.findViewById(R.id.mobile))
                    .getText().toString();

            // Starting single contact activity
            Intent in = new Intent(getApplicationContext(),
                    SingleContactActivity.class);
            in.putExtra(TAG_NAME, name);
            in.putExtra(TAG_EMAIL, cost);
            in.putExtra(TAG_PHONE_MOBILE, description);
            startActivity(in);

        }
    });

    // Calling async task to get json
    new GetContacts().execute();    
}
private void Btnfooter()
{
    int val = TOTAL_LIST_ITEMS%NUM_ITEMS_PAGE;
    val = val==0?0:1;
    noOfBtns=TOTAL_LIST_ITEMS/NUM_ITEMS_PAGE+val;

    LinearLayout ll = (LinearLayout)findViewById(R.id.btnLay);

    btns    =new Button[noOfBtns];

    for(int i=0;i<noOfBtns;i++)
    {
        btns[i] =   new Button(this);
        btns[i].setBackgroundColor(getResources().getColor(android.R.color.transparent));
        btns[i].setText(""+(i+1));

        LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        ll.addView(btns[i], lp);

        final int j = i;
        btns[j].setOnClickListener(new OnClickListener() {

            public void onClick(View v) 
            {
                //loadList(j);
                CheckBtnBackGroud(j);
            }
        });
    }

}

 private void CheckBtnBackGroud(int index)
    {

        for(int i=0;i<noOfBtns;i++)
        {
            if(i==index)
            {
                btns[index].setBackgroundDrawable(getResources().getDrawable(R.drawable.box_green));
                btns[i].setTextColor(getResources().getColor(android.R.color.white));
            }
            else
            {
                btns[i].setBackgroundColor(getResources().getColor(android.R.color.transparent));
                btns[i].setTextColor(getResources().getColor(android.R.color.black));
            }
        }

    }




private class GetContacts extends AsyncTask<Void, Void, Void> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        // Showing progress dialog
        pDialog = new ProgressDialog(MainActivity.this);
        pDialog.setMessage("Please wait...");
        pDialog.setCancelable(false);
        pDialog.show();

    }

    @Override
    protected Void doInBackground(Void... arg0) {
        // Creating service handler class instance
        ServiceHandler sh = new ServiceHandler();

        // Making a request to url and getting response
        String jsonStr = sh.makeServiceCall(gotourl(), ServiceHandler.GET);

        Log.d("Response: ", "> " + jsonStr);

        if (jsonStr != null) {
            try {
                JSONObject jsonObj = new JSONObject(jsonStr);

                // Getting JSON Array node
                contacts = jsonObj.getJSONArray("result");

                // looping through All Contacts
                for (int i = 0; i < contacts.length(); i++) {
                    Integer a = contacts.length();
                    Log.d("loop", a.toString());
                    JSONObject c = contacts.getJSONObject(i);

                    String id = c.getString("npi");
                    String name = c.getString("first_name");
                    String email = c.getString("last_name");
                    //String address = c.getString(TAG_ADDRESS);
                    String gender = c.getString("type");


                    // tmp hashmap for single contact
                    HashMap<String, String> contact = new HashMap<String, String>();

                    // adding each child node to HashMap key => value
                    contact.put("npi", id);
                    contact.put("first_name", name);
                    contact.put("last_name", email);
                    //contact.put(TAG_PHONE_MOBILE, mobile);

                    contact.put("type", gender);
                    // adding contact to contact list
                    contactList.add(contact);
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
        } else {
            Log.d("ServiceHandler", "Couldn't get any data from the url");


        }

        return null;
    }

    @Override
    protected void onPostExecute(Void result) {
        super.onPostExecute(result);
        // Dismiss the progress dialog
        if (pDialog.isShowing())
            pDialog.dismiss();
        /**
         * Updating parsed JSON data into ListView
         * */
        ListAdapter adapter = new SimpleAdapter(
                MainActivity.this, contactList,
                R.layout.list_item, new String[] { "first_name", "last_name",
                        "type" }, new int[] { R.id.name,
                        R.id.email, R.id.mobile });

        setListAdapter(adapter);
    }

}}

enter image description here

我改变了代码。当我点击下一个按钮[如2,3,4,5]。显示第一页数据。这是我修改过的代码。任何帮助感谢：

public class MainActivity extends ListActivity {

private TextView title;
Context context;
Button btnSearch ;
EditText txtSearch;
private ListView listview;

private ProgressDialog pDialog;

// URL to get contacts JSON

    public int TOTAL_LIST_ITEMS = 50;
    public int NUM_ITEMS_PAGE   = 10;
    private int noOfBtns;
    private Button[] btns;




// JSON Node names
private static final String TAG_CONTACTS = "contacts";
private static final String TAG_ID = "id";
private static final String TAG_NAME = "name";
private static final String TAG_EMAIL = "email";
private static final String TAG_ADDRESS = "address";
private static final String TAG_GENDER = "gender";
private static final String TAG_PHONE = "phone";
private static final String TAG_PHONE_MOBILE = "mobile";
private static final String TAG_PHONE_HOME = "home";
private static final String TAG_PHONE_OFFICE = "office";

// contacts JSONArray
JSONArray contacts = null;

// Hashmap for ListView
ArrayList<HashMap<String, String>> contactList;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    btnSearch=(Button)findViewById(R.id.buttonSearch);
    txtSearch=(EditText)findViewById(R.id.Searchtext);
    title    = (TextView)findViewById(R.id.title);

}

public String gotourl()
{


     final  EditText txtSearch=(EditText)findViewById(R.id.Searchtext);

     String ts=txtSearch.getText().toString();

     String url = "http://latest.bloomapi.com/api/search?limit=50&offset=0&key1=last_name&op1=eq&value1="+ts;

     return url ;
}

public void Searchfunction(View v)

{
    Btnfooter();


    CheckBtnBackGroud(0);
    contactList = new ArrayList<HashMap<String, String>>();

    ListView lv = getListView();




    // Listview on item click listener
    lv.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {

            if(position%2==0)
            {
                view.setBackgroundColor(Color.parseColor("#F4FA58"));

            }else
            {
            view.setBackgroundColor(Color.parseColor("#DA81F5"));
            }

            // getting values from selected ListItem
            String name = ((TextView) view.findViewById(R.id.name))
                    .getText().toString();
            String cost = ((TextView) view.findViewById(R.id.email))
                    .getText().toString();
            String description = ((TextView) view.findViewById(R.id.mobile))
                    .getText().toString();

            // Starting single contact activity
            Intent in = new Intent(getApplicationContext(),
                    SingleContactActivity.class);
            in.putExtra(TAG_NAME, name);
            in.putExtra(TAG_EMAIL, cost);
            in.putExtra(TAG_PHONE_MOBILE, description);
            startActivity(in);

        }
    });

    // Calling async task to get json
    new GetContacts().execute();    
}
private void Btnfooter()
{
    int val = TOTAL_LIST_ITEMS%NUM_ITEMS_PAGE;
    val = val==0?0:1;
    noOfBtns=TOTAL_LIST_ITEMS/NUM_ITEMS_PAGE+val;

    LinearLayout ll = (LinearLayout)findViewById(R.id.btnLay);

    btns    =new Button[noOfBtns];

    for(int i=0;i<noOfBtns;i++)
    {
        btns[i] =   new Button(this);
        btns[i].setBackgroundColor(getResources().getColor(android.R.color.transparent));
        btns[i].setText(""+(i+1));

        LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        ll.addView(btns[i], lp);

        final int j = i;
        btns[j].setOnClickListener(new OnClickListener() {

            public void onClick(View v) 
            {

                new GetContacts().execute();    
                CheckBtnBackGroud(j);
            }


        });
    }

}

 private void CheckBtnBackGroud(int index)
    {
      title.setText("Page "+(index+1)+" of "+noOfBtns);
        for(int i=0;i<noOfBtns;i++)
        {
            if(i==index)
            {
                btns[index].setBackgroundDrawable(getResources().getDrawable(R.drawable.box_green));
                btns[i].setTextColor(getResources().getColor(android.R.color.white));
            }
            else
            {
                btns[i].setBackgroundColor(getResources().getColor(android.R.color.transparent));
                btns[i].setTextColor(getResources().getColor(android.R.color.black));
            }
        }

    }




private class GetContacts extends AsyncTask<Void, Void, Void> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        // Showing progress dialog
        pDialog = new ProgressDialog(MainActivity.this);
        pDialog.setMessage("Please wait...");
        pDialog.setCancelable(false);
        pDialog.show();

    }

    @Override
    protected Void doInBackground(Void... arg0) {
        // Creating service handler class instance
        ServiceHandler sh = new ServiceHandler();

        // Making a request to url and getting response
        String jsonStr = sh.makeServiceCall(gotourl(), ServiceHandler.GET);

        Log.d("Response: ", "> " + jsonStr);

        if (jsonStr != null) {
            try {
                JSONObject jsonObj = new JSONObject(jsonStr);

                int number = 0;
                int start = number * NUM_ITEMS_PAGE;


                // looping through All Contacts




                // Getting JSON Array node
                contacts = jsonObj.getJSONArray("result");

                // looping through All Contacts
                //for (int i = 0; i < contacts.length(); i++) {
                for(int i=start;i<(start)+NUM_ITEMS_PAGE;i++) {


                    Integer a = contacts.length();
                    Log.d("loop", a.toString());
                    JSONObject c = contacts.getJSONObject(i);

                    String id = c.getString("npi");
                    String name = c.getString("first_name");
                    String email = c.getString("last_name");

                    String gender = c.getString("type");


                    // tmp hashmap for single contact
                    HashMap<String, String> contact = new HashMap<String, String>();

                    // adding each child node to HashMap key => value
                    contact.put("npi", id);
                    contact.put("first_name", name);
                    contact.put("last_name", email);
                    //contact.put(TAG_PHONE_MOBILE, mobile);

                    contact.put("type", gender);
                    // adding contact to contact list
                    contactList.add(contact);
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
        } else {
            Log.d("ServiceHandler", "Couldn't get any data from the url");


        }

        return null;
    }



    @Override
    protected void onPostExecute(Void result) {
        super.onPostExecute(result);
        // Dismiss the progress dialog
        if (pDialog.isShowing())
            pDialog.dismiss();
        /**
         * Updating parsed JSON data into ListView
         * */
        ListAdapter adapter = new SimpleAdapter(
                MainActivity.this, contactList,
                R.layout.list_item, new String[] { "first_name", "last_name",
                        "type" }, new int[] { R.id.name,
                        R.id.email, R.id.mobile });

        setListAdapter(adapter);
    }

}}

1 个答案:

答案 0 :(得分：1)

下面是我的代码，用于显示带分页的列表视图。更改页面有两个蓝色按钮。

您可以根据需要进行自定义。

创建UserCategory.java 

    package com.UserCategory;
import java.net.URL;
import java.util.ArrayList;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;

public class UserCategory extends Activity implements OnClickListener{
private final int PAGE_SIZE = 5;
private int StartingIndex = 0;
ArrayList<String> userClass=new ArrayList<String>();
int textlength=0;

private String lv_arr[];
private ListView lv1;
EditText searchText;

//Button Previous;

private String Machine[]={"Machine 1","Machine 2","Machine 3","Machine 4","Machine 5","Machine 6","Machine 7","Machine 8","Machine 9","Machine 10","Machine 11","Machine 12","Machine 1","Machine 2","Machine 3","Machine 4","Machine 5","Machine 6","Machine 7","Machine 8","Machine 9","Machine 10","Machine 11","Machine 12"};
ImageView next,Previous;

@Override        
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
      this.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
      setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        setContentView(R.layout.main);
        lv1=(ListView)findViewById(R.id.ListView01);
        searchText=(EditText)findViewById(R.id.et_Serchlist);
        next=(ImageView)findViewById(R.id.btn_next);
        Previous=(ImageView)findViewById(R.id.btn_previous);
        next.setOnClickListener(this);
        Previous.setOnClickListener(this);       
     //parsing();
    lv1.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1 , Machine));
    changeListViewModel(0);


   }
private void changelist(int startingIndex) {

    if(startingIndex < 0) {
        Previous=(ImageView)findViewById(R.id.btn_previous);
        ImageView back=(ImageView)findViewById(R.id.btn_Whiteprevious);
        back.setVisibility(1);
        Previous.setVisibility(4);
        startingIndex = 0;
    }else if(startingIndex >= userClass.size())
        startingIndex -= PAGE_SIZE;
    StartingIndex   = startingIndex;
    int endingIndex = startingIndex + PAGE_SIZE;

    System.out.println("ending index"+endingIndex);
    if(StartingIndex!=0){
        Previous=(ImageView)findViewById(R.id.btn_previous);
        ImageView back=(ImageView)findViewById(R.id.btn_Whiteprevious);
        back.setVisibility(4);
        Previous.setVisibility(1);


    }
    if(endingIndex == userClass.size()){
        ImageView Forward=(ImageView)findViewById(R.id.btn_grewforward);
        Forward.setVisibility(1);
         next=(ImageView)findViewById(R.id.btn_next);
         next.setVisibility(4);
    }
    if(endingIndex != userClass.size()){
        ImageView Forward=(ImageView)findViewById(R.id.btn_grewforward);
        Forward.setVisibility(4);
         next=(ImageView)findViewById(R.id.btn_next);
         next.setVisibility(1);
    }
    if(endingIndex > userClass.size()) endingIndex = userClass.size();
    try {

        String[] subSet = getDataSubset1(startingIndex, endingIndex);
        System.out.println("subSet array"+subSet);
        lv1.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1 , subSet));

    } catch (Exception e) {
        e.printStackTrace();
    }
}
private String[] getDataSubset1(int startingIndex, int endingIndex){
    String[] changeList = new String[endingIndex - startingIndex];
    int index = -1;
    for(int x = startingIndex; x < endingIndex; x++)

        changeList[++index] = userClass.get(x);


    return changeList;

}

private void changeListViewModel(int startingIndex){

    if(startingIndex < 0) {
        Previous=(ImageView)findViewById(R.id.btn_previous);
        ImageView back=(ImageView)findViewById(R.id.btn_Whiteprevious);
        back.setVisibility(1);
        Previous.setVisibility(4);
        startingIndex = 0;
    }

    else if(startingIndex >= Machine.length){

        startingIndex -= PAGE_SIZE;
    }
        System.out.println("strating"+startingIndex);

    System.out.println("startingIndex"+startingIndex);
    StartingIndex   = startingIndex;
    int endingIndex = startingIndex + PAGE_SIZE;
    System.out.println("endingIndex"+endingIndex);
     if(StartingIndex!=0)
     {
        Previous=(ImageView)findViewById(R.id.btn_previous);
        ImageView back=(ImageView)findViewById(R.id.btn_Whiteprevious);
        back.setVisibility(4);
        Previous.setVisibility(1);
        }
     if(endingIndex == userClass.size()){
            ImageView Forward=(ImageView)findViewById(R.id.btn_grewforward);
            Forward.setVisibility(1);
             next=(ImageView)findViewById(R.id.btn_next);
             next.setVisibility(4);
        }
     if(endingIndex != userClass.size()){
            ImageView Forward=(ImageView)findViewById(R.id.btn_grewforward);
            Forward.setVisibility(4);
             next=(ImageView)findViewById(R.id.btn_next);
             next.setVisibility(1);
        }
    System.out.println("ending index"+endingIndex);
    if(endingIndex > Machine.length) {

        endingIndex = Machine.length;
        ImageView Forward=(ImageView)findViewById(R.id.btn_grewforward);
        Forward.setVisibility(1);
         next=(ImageView)findViewById(R.id.btn_next);
         next.setVisibility(4);
    }


    String[] subSet = getDataSubset(startingIndex, endingIndex);
    System.out.println("subSet main array"+subSet.length);
    lv1.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1 , subSet));
}

private String[] getDataSubset(int startingIndex, int endingIndex){
    String[] toRet = new String[endingIndex - startingIndex];
    int index = -1;
    System.out.println("index"+index);
    for(int x = startingIndex; x < endingIndex; x++)
        toRet[++index] = Machine[x];

    return toRet;

}
private void parsing() {
    // TODO Auto-generated method stub
    try {

        URL url = new URL("http://10.10.1.100/DogEventsWebService/EventService.svc/categories/1");
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document doc = db.parse(new InputSource(url.openStream()));
        doc.getDocumentElement().normalize();

        NodeList nodeList = doc.getElementsByTagName("UserCategory");
        Machine = new String[nodeList.getLength()];


        for (int i = 0; i < nodeList.getLength(); i++) 
        {

            Node node = nodeList.item(i);
            Machine[i] = new String();

            Element fstElmnt = (Element) node;
            NodeList nameList = fstElmnt.getElementsByTagName("ClassDescription");
            Element nameElement = (Element) nameList.item(0);
            nameList = nameElement.getChildNodes();
            Machine[i]=((Node) nameList.item(0)).getNodeValue();
         }

        System.out.println("after for loop Machine"+Machine);

    } catch (Exception e) {
        System.out.println("XML Pasing Excpetion = " + e);
    }
}
@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    switch (v.getId()) {
    case R.id.btn_next:

        textlength=searchText.getText().length();
        System.out.println("nextbutton"+textlength);
        if(textlength==0){
            changeListViewModel(StartingIndex + PAGE_SIZE);
        }else{
            changelist(StartingIndex + PAGE_SIZE);
            }

        break;
    case R.id.btn_previous:
        textlength=searchText.getText().length();
        if(textlength==0){
        changeListViewModel(StartingIndex - PAGE_SIZE);
        }else{
        changelist(StartingIndex - PAGE_SIZE);
        }
         break;
        default:
        break;
     }
}

}

创建main.xml：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <View android:layout_height="35dp" 
      android:layout_width="fill_parent" 
      android:background="#ffffff"/>
  <TextView  android:id="@+id/tv_header"
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:text="@string/hello" 
       android:layout_alignParentTop="true" 
       android:layout_marginLeft="0dp"
       android:textSize="25dp"/>
       <EditText 
       android:id="@+id/et_Serchlist" 
     android:layout_height="35dp" 
     android:paddingLeft="19dp"
      android:layout_marginLeft="60dp"
     android:layout_toRightOf="@+id/tv_header"
     android:maxLength="20"
     android:maxLines="1"
     android:inputType="text"
     android:hint="Search" 
     android:textColor="#ffffff"
     android:background="@drawable/my_border"
     android:layout_width="100dip"/>
  <ListView 
   android:id="@+id/ListView01"
   android:layout_width="fill_parent"
   android:textSize="4px" 
   android:layout_below="@+id/tv_header"
   android:layout_above="@+id/btn_previous"
   android:layout_height="wrap_content" />
     <View android:layout_height="55dp" 
       android:layout_below="@+id/ListView0"
       android:layout_alignParentBottom="true"
       android:layout_width="fill_parent" 
       android:background="#ffffff"/>
        <ImageView 
        android:src="@drawable/grewprevious"  
        android:id="@+id/btn_Whiteprevious" 
        android:layout_width="wrap_content" 
       android:layout_marginLeft="12dp"
    android:layout_marginBottom="6dp"
    android:layout_below="@+id/ListView0" 
   android:visibility="invisible"
        android:layout_alignParentBottom="true"
        android:layout_height="wrap_content"/>
      <ImageView 
        android:src="@drawable/right"  
        android:id="@+id/btn_grewforward" 
        android:layout_width="wrap_content" 
        android:layout_marginLeft="259dp"
        android:layout_marginBottom="6dp"
        android:layout_below="@+id/ListView0" 
        android:visibility="invisible"
        android:layout_alignParentBottom="true"
        android:layout_height="wrap_content"/>
     <ImageView 
        android:src="@drawable/backward" 
       android:id="@+id/btn_previous"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_alignParentBottom="true"
       android:layout_marginLeft="12dp"
       android:layout_marginBottom="6dp"
       android:layout_below="@+id/ListView0"
       android:onClick="backButtonClicked"/>

    <ImageView android:src="@drawable/forward" 
     android:id="@+id/btn_next"
    android:layout_width="80dp" 
    android:layout_marginBottom="6dp"
    android:layout_height="wrap_content"
        android:layout_alignParentBottom="true" 
   android:layout_below="@+id/ListView0"
   android:layout_marginLeft="249dp"
    android:text="Next" 
    android:onClick="nextButtonClicked"/>   
</RelativeLayout>

创建userlist.xml 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="match_parent"
    android:layout_height="match_parent">
  <TextView android:id="@+id/tv_className"
   android:layout_height="wrap_content" 
   android:layout_width="wrap_content"/> 
</LinearLayout>

将my_border.xml添加到Drawable文件夹中：

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<stroke android:width="2dip" android:color="#ee777777" />
<solid android:color="#ee444444"/>
<padding  
   android:left="20dip" 
  android:top="2dip" 
  android:right="20dip" 
  android:bottom="2dip" />
<corners android:radius="15dip" />
![enter image description here][1]</shape>

如果它给iamges带来错误，那么使用任何其他图像并运行应用程序。

让我知道它对你有用。

由于

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