好记性不如烂笔杆-android学习笔记<五> ListView用法

15,//ListView
//main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <LinearLayout 
        android:id="@+id/listLinearLayout"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        >
        <ListView 
            android:id="@+id/android:list"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:drawSelectorOnTop="false"
            android:scrollbars="vertical"
            />
    </LinearLayout>
</LinearLayout>

//适配器中调用的item文件的xml文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal"
    android:paddingLeft="10dip"
    android:paddingRight="10dip"
    android:paddingTop="10dip"
    android:paddingBottom="1dip" >
    <TextView 
        android:id="@+id/user_name"
        android:layout_width="180dip"
        android:layout_height="30dip"
        android:textSize="10pt"
        android:singleLine="true"        
        />
    <TextView 
        android:id="@+id/user_ip"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:textSize="10pt"
        android:gravity="right"      
        />
</LinearLayout>

//Java文件，使用ListView时，Activity时需要继承ListActivity

OnCreate方法中 

ArrayList<HashMap<String,String>> list = new ArrayList<HashMap<String,String>>();
HashMap<String,String> map1 = new HashMap<String,String>();
map1.put("user_name", "zhangsan");
map1.put("user_ip", "192.168.0.1");
list.add(map1);
//适配器 ,这里调用user.xml文件
SimpleAdapter listAdapter = new SimpleAdapter(this,
        list,R.layout.user,
        new String[]{"user_name","user_ip"},
        new int[]{R.id.user_name,R.id.user_ip});
setListAdapter(listAdapter); 
}
//点击listView的item时，使用onListItemClick方法
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
    // TODO Auto-generated method stub
    super.onListItemClick(l, v, position, id);
    System.out.println("id-------------"+ id);
    System.out.println("position-------------"+ position);
} 

<2>//ListView,例子2

//Java文件，使用ListView

ArrayList<HashMap<String,String>> mlist = new ArrayList<HashMap<String,String>>();
HashMap<String,String> map = new HashMap<String,String>();
map.put("nav_adapter_img", "");
map.put("nav_adapter_name", "audio1234.mp3");
map.put("nav_adapter_size", "300k");
map.put("nav_adapter_Right_img", "");
myListView = (ListView) findViewById(R.id.mylistview);
mlist.add(map);
myListView.setAdapter(new MyListViewAdapter(this,mlist));        
//click the ListView
myListView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            Intent intent = new Intent();
            intent.setClass(TestActivity.this, summaryActivity.class);
            intent.putExtra("Click", "There is the ListView onItemClick method------------------------->");
            startActivity(intent);
        }
    
    });
//set up a list view
myListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
myListView.setOnItemLongClickListener(new OnCreateContextMenuListener());
myListView.setFastScrollEnabled(true);
registerForContextMenu(myListView);
//创建MyListViewAdapter适配器类，继承于BaseAdapter
static class MyListViewAdapter extends BaseAdapter{
ArrayList<HashMap<String,String>> mlist;
LayoutInflater mLayoutInflater;
Context mContext;
    public MyListViewAdapter(Context mContext,ArrayList<HashMap<String, String>> mlist) {
        super();
        this.mlist = mlist;
        mLayoutInflater = LayoutInflater.from(mContext);
        this.mContext =mContext;
    }
    @Override
    public int getCount() {
        return mlist.size();
    }
    @Override
    public Object getItem(int position) {
        return mlist.get(position);
    }
    @Override
    public long getItemId(int position) {
        return position;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if(convertView == null)
        {
            convertView = mLayoutInflater.inflate(R.layout.items, null);
        }
        TextView tv = (TextView) convertView.findViewById(R.id.nav_adapter_name);
        tv.setText(((HashMap<String,String>)getItem(position)).get("nav_adapter_name"));
        tv = (TextView) convertView.findViewById(R.id.nav_adapter_size);
        tv.setText(((HashMap<String,String>)getItem(position)).get("nav_adapter_size"));
        //imageView test
        ImageView img = (ImageView)convertView.findViewById(R.id.nav_adapter_Right_img);
        img.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(mContext, summaryActivity.class);
                intent.putExtra("Click", "There is the ImageView onClick method----------------------->" +
                        "test,test,test,test,test,test,test,test,test,test,test,test,test,test," +
                        "test,test,test,test,test,test,test,test,test" );
                mContext.startActivity(intent);
            }
        });
        return convertView;
    }
}