Android编程实现带有图标的ListView并带有长按菜单效果示例

本文实例讲述了Android编程实现带有图标的ListView并带有长按菜单效果。分享给大家供大家参考，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 {
  /** Called when the activity is first created. */
  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); //删除
    items.remove(item);
    adapter=new CustomListViewAdapter(this, items);
    lv.setAdapter(adapter);*/
    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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希望本文所述对大家Android程序设计有所帮助。