Android编程如何实现带有图标的ListView

小编给大家分享一下Android编程如何实现带有图标的ListView，希望大家阅读完这篇文章之后都有所收获，下面让我们一起去探讨吧！

具体如下：

MainActivity.Java

package com.zxl;import java.util.ArrayList;import java.util.List;import org.w3c.dom.ls.LSException;import android.app.Activity;import android.os.Bundle;import android.view.ContextMenu;import android.view.ContextMenu.ContextMenuInfo;import android.view.MenuItem;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.AdapterContextMenuInfo;import android.widget.ListView;import android.widget.AdapterView.OnItemClickListener;import android.widget.Toast;public class MainActivity extends Activity implements OnItemClickListener {    ListView lv;  List<ListViewItem> items;  CustomListViewAdapter adapter;  @Override  public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    lv=(ListView)findViewById(R.id.listView1);    items=new ArrayList<MainActivity.ListViewItem>();    items.add(new ListViewItem(){{      ThumbnailResource=R.drawable.ic_launcher;      title="Item1";      SubTitle="Item1 Description";    }});    items.add(new ListViewItem(){{      ThumbnailResource=R.drawable.ic_launcher;      title="Item2";      SubTitle="Item2 Description";    }});    items.add(new ListViewItem(){{      ThumbnailResource=R.drawable.ic_launcher;      title="Item3";      SubTitle="Item3 Description";    }});    items.add(new ListViewItem(){{      ThumbnailResource=R.drawable.ic_launcher;      title="Item4";      SubTitle="Item4 Description";    }});    adapter=new CustomListViewAdapter(this, items);    lv.setAdapter(adapter);    registerForContextMenu(lv);    lv.setOnItemClickListener(this);  }  class ListViewItem{    public int ThumbnailResource;    public String title;    public String SubTitle;  }  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {    // TODO Auto-generated method stub    ListViewItem item=items.get(position);    Toast.makeText(MainActivity.this, "this is :"+item, Toast.LENGTH_LONG).show();  }  @Override  public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {    // TODO Auto-generated method stub    super.onCreateContextMenu(menu, v, menuInfo);    menu.add("add");    menu.add("update");    menu.add("delete");  }  @Override  public boolean onContextItemSelected(MenuItem item) {    // TODO Auto-generated method stub    super.onContextItemSelected(item);    if(item.getTitle()=="add"){      Toast.makeText(MainActivity.this, "add", Toast.LENGTH_LONG).show();      items.add(new ListViewItem(){{        ThumbnailResource=R.drawable.ic_launcher;        title="Item new";        SubTitle="Item new Description";      }});      adapter=new CustomListViewAdapter(this, items);      lv.setAdapter(adapter);    }    else if(item.getTitle()=="update"){      //do somthing    }    else if(item.getTitle()=="delete"){      ContextMenuInfo info = item.getMenuInfo();      AdapterView.AdapterContextMenuInfo contextMenuInfo = (AdapterContextMenuInfo) info;       // 获取选中行位置      int position = contextMenuInfo.position;      ListViewItem itema=items.get(position);      items.remove(itema);      adapter=new CustomListViewAdapter(this, items);      lv.setAdapter(adapter);    }    return true;  }}

CustomListViewAdapter.java

package com.zxl;import java.util.List;import com.zxl.MainActivity.ListViewItem;import android.app.Activity;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.ListView;import android.widget.TextView;public class CustomListViewAdapter extends BaseAdapter{  LayoutInflater inflater;  List<ListViewItem> items;  public CustomListViewAdapter(Activity context, List<ListViewItem> items) {    super();    this.items = items;    this.inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);  }  public int getCount() {    // TODO Auto-generated method stub    return items.size();  }  public Object getItem(int position) {    // TODO Auto-generated method stub    return null;  }  public long getItemId(int position) {    // TODO Auto-generated method stub    return 0;  }  public View getView(final int position, View convertView, ViewGroup parent) {    // TODO Auto-generated method stub    //items    ListViewItem item=items.get(position);    View vi=convertView;    if(convertView==null)      vi = inflater.inflate(R.layout.item_row, null);    ImageView imgThumbnail=(ImageView) vi.findViewById(R.id.imgThumbnail);    TextView txtTitle =(TextView) vi.findViewById(R.id.txtTitle);    TextView txtSubTitle=(TextView) vi.findViewById(R.id.txtSubTitle);    imgThumbnail.setImageResource(item.ThumbnailResource);    txtTitle.setText(item.title);    txtSubTitle.setText(item.SubTitle);    return vi;  }}

main.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="fill_parent"  android:layout_height="fill_parent"  android:orientation="vertical" >  <TextView    android:id="@+id/textView1"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:text="@string/hello" />  <ListView    android:id="@+id/listView1"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_alignParentLeft="true"    android:layout_below="@+id/textView1"    android:layout_alignParentTop="true" >  </ListView></RelativeLayout>

item_row.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout  android:id="@+id/relativeLayout1"  android:layout_width="fill_parent"  android:layout_height="fill_parent"  xmlns:android="http://schemas.android.com/apk/res/android"  android:padding="5dip">  <ImageView    android:layout_width="78dip"    android:layout_height="78dip"    android:id="@+id/imgThumbnail"    android:layout_alignParentLeft="true"    android:layout_centerInParent="true"    android:layout_marginLeft="-3dip"    android:scaleType="centerInside">  </ImageView>  <TextView    android:textAppearance="?android:attr/textAppearanceLarge"    android:layout_height="wrap_content"    android:text="TextView"    android:layout_width="wrap_content"    android:id="@+id/txtTitle"    android:layout_toRightOf="@+id/imgThumbnail"    android:layout_marginTop="6dip"    android:layout_marginLeft="6dip">  </TextView>  <TextView    android:layout_height="wrap_content"    android:text="TextView"    android:layout_width="wrap_content"    android:id="@+id/txtSubTitle"    android:layout_toRightOf="@+id/imgThumbnail"    android:layout_below="@+id/txtTitle"    android:layout_marginTop="3dip"    android:layout_marginLeft="6dip">  </TextView></RelativeLayout>

文件结构：

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