首页 > 系统 > Android > 正文

Android中ListView设置静态数据的方法

2020-04-11 11:12:26
字体:
来源:转载
供稿:网友

有的时候我们需要为一个listview设置固定的数据,下边就是如何设置静态的数据,之前先给大家看一看效果图:

布局文件listview 的主页面

<?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"  android:orientation="vertical" >  <ListView    android:id="@+id/listview"    android:layout_width="fill_parent"    android:layout_height="fill_parent" >  </ListView></LinearLayout>

然后的一个布局文件为每一个listview的item,listview_item.xml有图片和文字

<?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"  android:orientation="horizontal" >  <ImageView    android:id="@+id/listitem_iv"    android:layout_width="74dp"    android:layout_height="74dp"    android:src="@drawable/about_brand" />  <TextView    android:id="@+id/listitem_tv"    android:layout_width="match_parent"    android:layout_height="74dp"    android:text="TextView"    android:textAlignment="center"    android:textSize="55dp" /></LinearLayout>

然后关键的是如何设置静态数据:
这界面的控制类ListViewUseAdapter.java

import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.Toast;import android.widget.AdapterView.OnItemClickListener;import android.widget.ListView;public class ListViewUseAdapter extends Activity {  private ListView listview;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.listview_test);    listview = (ListView) this.findViewById(R.id.listview);    // 设置适配器的图片资源    int[] imageId = new int[] { R.drawable.chat_tool_camera,        R.drawable.chat_tool_location, R.drawable.chat_tool_paint,        R.drawable.chat_tool_video, R.drawable.chat_tool_voice,        R.drawable.about_brand };    // 设置标题    String[] title = new String[] { "相机", "定位", "画笔", "视频", "声音", "聊天" };    List<Map<String, Object>> listitem = new ArrayList<Map<String, Object>>();    // 将上述资源转化为list集合    for (int i = 0; i < title.length; i++) {      Map<String, Object> map = new HashMap<String, Object>();      map.put("image", imageId[i]);      map.put("title", title[i]);      listitem.add(map);    }    ListViewAdapter adapter = new ListViewAdapter(this, listitem);    listview.setAdapter(adapter);    listview.setOnItemClickListener(new OnItemClickListener() {      @Override      public void onItemClick(AdapterView<?> parent, View view,          int position, long id) {        Toast.makeText(ListViewUseAdapter.this, "haha", Toast.LENGTH_SHORT).show();       }    });  }}

然后需要的适配器如下:

import java.util.List;import java.util.Map;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;public class ListViewAdapter extends BaseAdapter {  private Context context;  private List<Map<String, Object>> listitem;  public ListViewAdapter(Context context, List<Map<String, Object>> listitem) {    this.context = context;    this.listitem = listitem;  }  @Override  public int getCount() {    return listitem.size();  }  @Override  public Object getItem(int position) {    return listitem.get(position);  }  @Override  public long getItemId(int position) {    return position;  }  @Override  public View getView(int position, View convertView, ViewGroup parent) {    if (convertView == null) {      convertView = LayoutInflater.from(context).inflate(R.layout.listview_item, null);    }    ImageView imageView = (ImageView) convertView.findViewById(R.id.listitem_iv);    TextView textView = (TextView) convertView.findViewById(R.id.listitem_tv);    Map<String, Object> map = listitem.get(position);    imageView.setImageResource((Integer) map.get("image"));    textView.setText(map.get("title") + "");    return convertView;  }}

希望本文所述对大家学习Android软件编程有所帮助。

发表评论 共有条评论
用户名: 密码:
验证码: 匿名发表