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Android中使用ListView模擬微信好友功能

效果圖：

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Android中使用ListView模擬微信好友功能Android中使用ListView模擬微信好友功能

分析：

Android中使用ListView模擬微信好友功能

1、創(chuàng)建listView

2、創(chuàng)建數(shù)據(jù)

3、創(chuàng)建適配器

將數(shù)據(jù)放到呈現(xiàn)數(shù)據(jù)的容器里面。

將這個容器（帶數(shù)據(jù)）連接適配器。

其實是直接在我們自己寫的adapter的getView重載方法中返回連接的view?！?/p>

　View view=View.inflate(mContext, com.example.weChatFriends.R.layout.item_friend, null);
　　　　return view;

4、ListView設(shè)置適配器

代碼：

package fry;
import java.util.ArrayList;
import java.util.List;
import com.example.weChatFriends.R;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.Toast;
public class Activity01 extends Activity implements OnItemSelectedListener,OnItemClickListener{
  private FriendModel friend;
  private ListView listView;
  private List<FriendModel> list;
  private weChatListAdapter adapter;
  //存資源圖片ID
  private int[] imageID=new int[]{R.drawable.image1,R.drawable.image2,
      R.drawable.image3,R.drawable.image4,R.drawable.image5,R.drawable.image6,
      R.drawable.image7,R.drawable.image8,R.drawable.image9,R.drawable.image10,
      R.drawable.image11};
  //存昵稱
  private String[] nickName=new String[]{"張三","吳京","戰(zhàn)狼","神煩xp","木魚"
      ,"水心","系大大","電影","血怒","創(chuàng)奇","講故事"
  };
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity01);
    init();
    setData();
  }
  private void setData() {
    //這里要是寫成for(int i:imageID)，那么i就是資源id，例如2130837505
    for(int i=0;i<imageID.length;i++){
      FriendModel friend1=new FriendModel();
      //System.out.println(i);
      friend1.setImageNum(imageID[i]);
      friend1.setNickName(nickName[i]);
      friend1.setSignature("我要做比海賊王還強大的人");
      list.add(friend1);
    }
    adapter=new weChatListAdapter(list, this);
    listView.setAdapter(adapter);
  }
  private void init() {
    listView=(ListView) findViewById(R.id.listView);
    listView.setOnItemSelectedListener(this);
    listView.setOnItemClickListener(this);
    friend=new FriendModel();
    list=new ArrayList<FriendModel>();
  }
  /*
   * Callback method to be invoked when an item in this view has been selected. This callback is invoked only when the newly selected position is different from the previously selected position or if there was no selected item.(non-Javadoc)
   * @see android.widget.AdapterView.OnItemSelectedListener#onItemSelected(android.widget.AdapterView, android.view.View, int, long)
   */
  @Override
  public void onItemSelected(AdapterView<?> parent, View view, int position,
      long id) {
  }
  @Override
  public void onNothingSelected(AdapterView<?> parent) {
    // TODO Auto-generated method stub
  }
  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position,
      long id) {
    FriendModel friendItem=(FriendModel) parent.getItemAtPosition(position);
    String s=friendItem.getNickName();
    Log.d("onItemClick","s");
    Toast.makeText(this, s, Toast.LENGTH_SHORT).show();
  }
}
package fry;
import java.util.List;
import com.example.weChatFriends.R;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class weChatListAdapter extends BaseAdapter{
  private List<FriendModel> myData;
  private Context mContext;
  private ImageView avator;
  private TextView nickName1;
  private TextView signature1;
  private FriendModel friend;
  public weChatListAdapter(List<FriendModel> data, Context mContext) {
    super();
    this.myData = data;
    this.mContext = mContext;
  }
  //How many items are in the data set represented by this Adapter.
  @Override
  public int getCount() {
    // TODO Auto-generated method stub
    return this.myData.size();
  }
  //Get the data item associated with the specified position in the data set.
  @Override
  public Object getItem(int position) {
    // TODO Auto-generated method stub
    return this.myData.get(position);
  }
  //Get the row id associated with the specified position in the list.
  @Override
  public long getItemId(int position) {
    // TODO Auto-generated method stub
    return position;
  }
  //Get a View that displays the data at the specified position in the data set. 
  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub
    View view=View.inflate(mContext, com.example.weChatFriends.R.layout.item_friend, null);
    //System.out.println(position);
    friend=myData.get(position);
    int ImageID=friend.getImageNum();
    String nickName=friend.getNickName();
    String signature=friend.getSignature();
    avator=(ImageView) view.findViewById(R.id.iv_avator);
    nickName1=(TextView)view.findViewById(R.id.tv_nickname);
    signature1=(TextView)view.findViewById(R.id.tv_signature);
    avator.setImageResource(ImageID);
    nickName1.setText(nickName);
    signature1.setText(signature);
    return view;
  }
}

自己創(chuàng)建的適配器

package fry;
public class FriendModel {
  //頭像的圖片id
  private int imageNum;
  //昵稱
  private String nickName;
  //個性簽名
  private String signature;
  public int getImageNum() {
    return imageNum;
  }
  public void setImageNum(int imageNum) {
    this.imageNum = imageNum;
  }
  public String getNickName() {
    return this.nickName;
  }
  public void setNickName(String nickName) {
    this.nickName = nickName;
  }
  public String getSignature() {
    return signature;
  }
  public void setSignature(String signature) {
    this.signature = signature;
  }
}

列表中聯(lián)系人數(shù)據(jù)的封裝

<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/listView"
  android:layout_width="match_parent"
  android:layout_height="wrap_content" >
</ListView>
ListView
 ListView
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content" >
  <ImageView 
    android:id="@+id/iv_avator"
    android:layout_width="70dp"
    android:layout_height="70dp"
    android:src="@drawable/image1"
    />
  <TextView 
    android:id="@+id/tv_nickname"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_toRightOf="@+id/iv_avator"
    android:layout_centerVertical="true"
    android:layout_marginLeft="20dp"
    android:text="張三"
    />
  <TextView 
    android:id="@+id/tv_signature"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerVertical="true"
    android:layout_alignParentRight="true"
    android:text="我要做比海賊王更強大的男人"
    />
</RelativeLayout>

用于存放數(shù)據(jù)的容器

文章名稱：Android中使用ListView模擬微信好友功能
URL地址：http://vcdvsql.cn/article16/pdeddg.html

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