ListView類比微信好友功能，listview類比好友

ListView類比好友功能，listview類比好友
ListView類比好友功能

：

 

分析：

1、建立listView

2、建立資料

3、建立適配器

　　將資料放到呈現資料的容器裡面。

　　將這個容器（帶資料）串連適配器。

　　　　其實是直接在我們自己寫的adapter的getView重載方法中返回串連的view。

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

　　　　return view;

4、ListView設定適配器

　　

 

 

代碼：

 

 1 package fry; 2  3 import java.util.ArrayList; 4 import java.util.List; 5  6 import com.example.weChatFriends.R; 7  8 import android.app.Activity; 9 import android.os.Bundle;10 import android.util.Log;11 import android.view.View;12 import android.widget.AdapterView;13 import android.widget.AdapterView.OnItemClickListener;14 import android.widget.AdapterView.OnItemSelectedListener;15 import android.widget.ArrayAdapter;16 import android.widget.ListView;17 import android.widget.RelativeLayout;18 import android.widget.Toast;19 20 public class Activity01 extends Activity implements OnItemSelectedListener,OnItemClickListener{21     private FriendModel friend;22     private ListView listView;23     private List<FriendModel> list;24     private weChatListAdapter adapter;25     //存資源圖片ID26     private int[] imageID=new int[]{R.drawable.image1,R.drawable.image2,27             R.drawable.image3,R.drawable.image4,R.drawable.image5,R.drawable.image6,28             R.drawable.image7,R.drawable.image8,R.drawable.image9,R.drawable.image10,29             R.drawable.image11};30     //存暱稱31     private String[] nickName=new String[]{"張三","吳京","戰狼","神煩xp","木魚"32             ,"水心","系大大","電影","血怒","創奇","講故事"33     };34     @Override35     protected void onCreate(Bundle savedInstanceState) {36         // TODO Auto-generated method stub37         super.onCreate(savedInstanceState);38         setContentView(R.layout.activity01);39         init();40         setData();41         42         43     }44     private void setData() {45         //這裡要是寫成for(int i:imageID)，那麼i就是資源id，例如213083750546         for(int i=0;i<imageID.length;i++){47             FriendModel friend1=new FriendModel();48             //System.out.println(i);49             friend1.setImageNum(imageID[i]);50             friend1.setNickName(nickName[i]);51             friend1.setSignature("我要做比海賊王還強大的人");52             list.add(friend1);53         }54         adapter=new weChatListAdapter(list, this);55         listView.setAdapter(adapter);56         57     }58     private void init() {59         listView=(ListView) findViewById(R.id.listView);60         listView.setOnItemSelectedListener(this);61         listView.setOnItemClickListener(this);62         friend=new FriendModel();63         list=new ArrayList<FriendModel>();64         65         66     }67     /*68      * 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)69      * @see android.widget.AdapterView.OnItemSelectedListener#onItemSelected(android.widget.AdapterView, android.view.View, int, long)70      */71     @Override72     public void onItemSelected(AdapterView<?> parent, View view, int position,73             long id) {74         75     }76     @Override77     public void onNothingSelected(AdapterView<?> parent) {78         // TODO Auto-generated method stub79         80     }81     @Override82     public void onItemClick(AdapterView<?> parent, View view, int position,83             long id) {84         FriendModel friendItem=(FriendModel) parent.getItemAtPosition(position);85         String s=friendItem.getNickName();86         Log.d("onItemClick","s");87         Toast.makeText(this, s, Toast.LENGTH_SHORT).show();88         89     }90     91     92     93 }

主介面

 1 package fry; 2  3 import java.util.List; 4  5  6  7  8  9 10 11 12 13 import com.example.weChatFriends.R;14 15 import android.content.Context;16 import android.view.View;17 import android.view.ViewGroup;18 import android.widget.BaseAdapter;19 import android.widget.ImageView;20 import android.widget.TextView;21 22 public class weChatListAdapter extends BaseAdapter{23     private List<FriendModel> myData;24     private Context mContext;25     private ImageView avator;26     private TextView nickName1;27     private TextView signature1;28     private FriendModel friend;29     30     31     public weChatListAdapter(List<FriendModel> data, Context mContext) {32         super();33         this.myData = data;34         this.mContext = mContext;35     }36     37     //How many items are in the data set represented by this Adapter.38     @Override39     public int getCount() {40         // TODO Auto-generated method stub41         return this.myData.size();42     }43     44     //Get the data item associated with the specified position in the data set.45     @Override46     public Object getItem(int position) {47         // TODO Auto-generated method stub48         return this.myData.get(position);49     }50     51     //Get the row id associated with the specified position in the list.52     @Override53     public long getItemId(int position) {54         // TODO Auto-generated method stub55         return position;56     }57     58     //Get a View that displays the data at the specified position in the data set. 59     @Override60     public View getView(int position, View convertView, ViewGroup parent) {61         // TODO Auto-generated method stub62         View view=View.inflate(mContext, com.example.weChatFriends.R.layout.item_friend, null);63         //System.out.println(position);64         friend=myData.get(position);65         int ImageID=friend.getImageNum();66         String nickName=friend.getNickName();67         String signature=friend.getSignature();68         avator=(ImageView) view.findViewById(R.id.iv_avator);69         nickName1=(TextView)view.findViewById(R.id.tv_nickname);70         signature1=(TextView)view.findViewById(R.id.tv_signature);71         avator.setImageResource(ImageID);72         nickName1.setText(nickName);73         signature1.setText(signature);74         return view;75     }76 77 }

自己建立的適配器

 1 package fry; 2  3 public class FriendModel { 4     //頭像的圖片id 5     private int imageNum; 6     //暱稱 7     private String nickName; 8     //個性簽名 9     private String signature;10     11     12     13     public int getImageNum() {14         return imageNum;15     }16     public void setImageNum(int imageNum) {17         this.imageNum = imageNum;18     }19     public String getNickName() {20         return this.nickName;21     }22     public void setNickName(String nickName) {23         this.nickName = nickName;24     }25     public String getSignature() {26         return signature;27     }28     public void setSignature(String signature) {29         this.signature = signature;30     }31     32     33 }

列表中連絡人資料的封裝

1 <?xml version="1.0" encoding="utf-8"?>2 <ListView xmlns:android="http://schemas.android.com/apk/res/android"3     android:id="@+id/listView"4     android:layout_width="match_parent"5     android:layout_height="wrap_content" >6 7 </ListView>

ListView

 1 <?xml version="1.0" encoding="utf-8"?> 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 3     android:layout_width="wrap_content" 4     android:layout_height="wrap_content" > 5      6     <ImageView  7         android:id="@+id/iv_avator" 8         android:layout_width="70dp" 9         android:layout_height="70dp"10         android:src="@drawable/image1"11         />12     <TextView 13         android:id="@+id/tv_nickname"14         android:layout_width="wrap_content"15         android:layout_height="wrap_content"16         android:layout_toRightOf="@+id/iv_avator"17         android:layout_centerVertical="true"18         android:layout_marginLeft="20dp"19         android:text="張三"20         />21     <TextView 22         android:id="@+id/tv_signature"23         android:layout_width="wrap_content"24         android:layout_height="wrap_content"25         android:layout_centerVertical="true"26         android:layout_alignParentRight="true"27         android:text="我要做比海賊王更強大的男人"28         />29 30 </RelativeLayout>

用於存放資料的容器