亚洲激情专区-91九色丨porny丨老师-久久久久久久女国产乱让韩-国产精品午夜小视频观看

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

顺昌县| 罗田县| 扬中市| 宝应县| 武威市| 武强县| 山阴县| 焉耆| 晋州市| 江山市| 高碑店市| 北辰区| 康乐县| 青浦区| 盐亭县| 西丰县| 濮阳市| 云龙县| 敦化市| 晋江市| 那坡县| 斗六市| 抚松县| 桐乡市| 监利县| 渝北区| 贵定县| 南开区| 河曲县| 承德市| 乌鲁木齐市| 西青区| 镇雄县| 偃师市| 交口县| 江川县| 江永县| 长子县| 环江| 长乐市| 若羌县|