中文字幕av专区_日韩电影在线播放_精品国产精品久久一区免费式_av在线免费观看网站

溫馨提示×

溫馨提示×

您好,登錄后才能下訂單哦!

密碼登錄×
登錄注冊×
其他方式登錄
點擊 登錄注冊 即表示同意《億速云用戶服務條款》

Android中使用ListView模擬微信好友功能

發布時間:2020-08-19 17:09:03 來源:腳本之家 閱讀:134 作者:鉆石VIP 欄目:移動開發

效果圖:

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、創建listView

2、創建數據

3、創建適配器

  將數據放到呈現數據的容器里面。

  將這個容器(帶數據)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。   

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

4、ListView設置適配器

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","戰狼","神煩xp","木魚"
      ,"水心","系大大","電影","血怒","創奇","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;
  }
}

列表中聯系人數據的封裝

<?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>

用于存放數據的容器

向AI問一下細節

免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。

AI

和田市| 南部县| 广宗县| 富锦市| 宝丰县| 阜宁县| 定陶县| 隆子县| 望奎县| 彰化县| 正镶白旗| 齐齐哈尔市| 南澳县| 丰镇市| 平遥县| 尼木县| 仁寿县| 旺苍县| 沧州市| 兰州市| 浦江县| 武山县| 河池市| 自治县| 武乡县| 海安县| 贵溪市| 阳泉市| 绍兴县| 鹤壁市| 嘉义县| 偏关县| 精河县| 蒙自县| 九寨沟县| 隆子县| 新龙县| 荥阳市| 松阳县| 武强县| 舞阳县|