Android--ListView

安卓中ListView的使用既可以使用ListView组件 也可以使用ListActivity类

1.使用ArrayAdapter添加列表的视图内容

package com.qd.weibo;

import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.app.ListActivity;

public class MainActivity extends ListActivity {
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		String[] strs={"java","c","C++","Python"};
		ArrayAdapter<String> adapter=new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,strs);
		setListAdapter(adapter);
	}
}

2.使用SimpleCursorAdapter添加列表视图内容----将Android中联系人的信息显示出来

<1>调用getContentResolver()方法返回ContentResolver对象,通过该对象查询得到Cursor对象

<2>创建SimpleCursorAdapter对象

<3>设置适配器对象

package com.qd.weibo;

import android.os.Bundle;
import android.provider.Contacts.People;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.app.Activity;
import android.database.Cursor;

public class MainActivity extends Activity {
	private ListView listView;
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		listView = new ListView(this);
		Cursor cursor = getContentResolver().query(People.CONTENT_URI, null,
				null, null, null);
		startManagingCursor(cursor);
		ListAdapter listAdapter = new SimpleCursorAdapter(this,
				android.R.layout.simple_expandable_list_item_1, cursor,
				new String[] { People.NAME }, new int[] { android.R.id.text1 });
		listView.setAdapter(listAdapter);
		setContentView(listView);
	}
}