Android初步学代码收集

最新推荐文章于 2018-04-25 20:21:01 发布

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最新推荐文章于 2018-04-25 20:21:01 发布

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分类专栏： Android 文章标签： android string user listview sms class

本文链接：https://blog.youkuaiyun.com/jiacai2050/article/details/8008228

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本文通过一个具体实例展示了如何在Android应用中使用ListView组件显示用户列表。包括如何创建自定义适配器，填充数据，并响应列表项点击事件。

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package mars.listview;

import java.util.ArrayList;
import java.util.HashMap;

import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class Activity01 extends ListActivity {
    /** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		ArrayList<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();
		HashMap<String, String> map1 = new HashMap<String, String>();
		HashMap<String, String> map2 = new HashMap<String, String>();
		HashMap<String, String> map3 = new HashMap<String, String>();
		map1.put("user_name", "zhangsan");
		map1.put("user_ip", "192.168.0.1");
		map2.put("user_name", "zhangsan");
		map2.put("user_ip", "192.168.0.2");
		map3.put("user_name", "wangwu");
		map3.put("user_ip", "192.168.0.3");
		list.add(map1);
		list.add(map2);
		list.add(map3);
		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);
	}

	@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);
	}

}

class ButtonListener implements OnClickListener{@Overridepublic void onClick(View v) { Uri uri = Uri.parse("smsto://0800000123"); Intent it = new Intent(Intent.ACTION_SENDTO, uri); it.putExtra("sms_body", "The SMS text"); startActivity(it); } }

ListActivity的使用