アンドロイド学習天気予報システム

package com.example.first1;

import java.util.ArrayList;
import java.util.List;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class SecActivity extends Activity {
	//第二步，获得listview对象。
	private ListView userlv;
	
	//创建集合对象。
	List list;
	//定义菜单项。
	final static int menu_index=Menu.FIRST;
	final static int menu_content=Menu.FIRST+1;
	final static int menu_last=Menu.FIRST+2;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_sec);
		userlv=(ListView)findViewById(R.id.userlistview);
		list=new ArrayList();
		list.add("短息1");
		list.add("短息2");
		list.add("短息3");
		list.add("短息4");
		list.add("短信5");
		list.add("时间");
		ArrayAdapter<String> adapter=
				new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,list);
		userlv.setAdapter(adapter);
		
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		//getMenuInflater().inflate(R.menu.sec, menu);
		menu.add(0,menu_index, 0, "天气预报").setIcon(android.R.drawable.btn_star);
		menu.add(0,menu_content, 1, "历史数据").setIcon(android.R.drawable.btn_star);
		menu.add(0,menu_last, 2, "系统设置").setIcon(android.R.drawable.btn_star_big_off);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		// TODO Auto-generated method stub
		
		//return super.onOptionsItemSelected(item);
		switch(item.getItemId()){
		case menu_index:
			System.out.println("menu_index");
			return true;
		case menu_content:
			System.out.println("menu_content");
			return true;
		case menu_last:
			System.out.println("menu_last");
			return true;		
            
		}
		return false;
	}

	@Override
	public boolean onPrepareOptionsMenu(Menu menu) {
		// TODO Auto-generated method stub
		//return super.onPrepareOptionsMenu(menu);
		return true;
	}

}

インターフェース設定

<RelativeLayout xmlns：android = " http://schemas.android.com/apk/res/android "
    xmlns：tools = " http://schemas.android.com/tools "
    android：layout_width = "match_parent"
    android：layout_height = "match_parent"
    android：paddingBottom = "@ dimen / activity_vertical_margin"
    android：paddingLeft = "@ dimen / activity_horizo​​ntal_margin"
    android：paddingRight = "@ dimen / activity_horizo​​ntal_margin"
    android：paddingTop = "@ dimen / activity_vertical_margin"
    tools：context = MainActivity ">

    <TextView
        android：id = "@ + id / btn1"
        android：layout_width = "wrap_content"
        android：layout_height = "wrap_content"
        android：layout_alignParentLeft = "true"
        android：layout_alignParentTop = "true"
        android：layout_marginTop = "21dp"
        android： text = "城市目"
        android：textSize = "30sp" />

    <EditText
        android：id = "@ + id / editText1"
        android：layout_width = "wrap_content"
        android：layout_height = "wrap_content"
        android：layout_alignTop = "@ + id / btn1"
        android：layout_marginLeft = "25dp"
        android：layout_toRightOf = " @ + id / btn1 "
        android：ems =" 10 "
        android：textSize =" 10dp "/>

    <TextView
        android：id = "@ + id / btn2"
        android：layout_width = "wrap_content"
        android：layout_height = "wrap_content"
        android：layout_alignLeft = "@ + id / btn1"
        android：layout_below = "@ + id / btn1"
        android ：layout_marginTop = "18dp"
        android：text = "更新频率："
        android：textSize = "30sp" />

    <EditText
        android：id = "@ + id / editText2"
        android：layout_width = "wrap_content"
        android：layout_height = "wrap_content"
        android：layout_alignBottom = "@ + id / btn2"
        android：layout_toRightOf = "@ + id / btn2"
        android ：ems = "10" />

    <Button
        android：id = "@ + id / button1"
        android：layout_width = "wrap_content"
        android：layout_height = "wrap_content"
        android：layout_centerHorizo​​ntal = "true"
        android：layout_centerVertical = "true"
        android：text = "提供短信服务" />

    <Button
        android：id = "@ + id / button2"
        android：layout_width = "wrap_content"
        android：layout_height = "wrap_content"
        android：layout_alignLeft = "@ + id / button1"
        android：layout_alignParentBottom = "true"
        android：layout_marginBottom = " 27dp "
        android：text ="退出系

    <Button
        android：id = "@ + id / btn"
        android：layout_width = "wrap_content"
        android：layout_height = "wrap_content"
        android：layout_below = "@ + id / button1"
        android：layout_centerHorizo​​ntal = "true"
        android：layout_marginTop = " 32dp "
        android：text ="欢迎、入天ガス预报系不適切 "/>