昨天介绍了基本的载入界面，今天介绍下天气信息显示界面的代码

1. 基本ListView显示
2. 搜索框，查询城市

上一篇文章中，载入界面通过showWeatherInfo()方法跳转到天气信息显示界面

    private void showWeatherInfo() {

        Bundle bundle = new Bundle();//bundle用来传递weatherinfolist

        bundle.putSerializable(Utils.WEATHERINFO, (Serializable) weatherInfoList);

        Intent intent = new Intent(MyActivity.this, MainActivity.class);

        //跳转到MainActivity

        intent.putExtra(Utils.WEATHERINFO, bundle);

        startActivity(intent);

        finish();//结束当前Activity

    }

如下是用于显示天气信息的MainActivity的内容，注意注释

public class MainActivity extends Activity {

    //定义TAG是用来打Log的

    private static final String TAG = "MyActivity";

    private ListView mListView;//ListView用来显示天气信息

    private WeatherAdapter mWeatherAdapter;//ListView对应的Adapter

    private EditText mSearchEt;//搜索框

    private ArrayList<WeatherInfo> weatherInfoList;//全部天气信息List

    private ArrayList<WeatherInfo> resultList;//根据搜索框输入的内容显示的结果List

    /**

     * Called when the activity is first created.

     */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        requestWindowFeature(Window.FEATURE_NO_TITLE);

        setContentView(R.layout.main);

        resultList = new ArrayList<WeatherInfo>();

        Intent intent = getIntent();

        Bundle bundle = intent.getBundleExtra(Utils.WEATHERINFO);//获取Intent中携带的信息

        weatherInfoList = (ArrayList<WeatherInfo>) bundle.getSerializable(Utils.WEATHERINFO);

        Log.e(TAG, "weatherinfo = " + weatherInfoList.toString());

        mSearchEt = (EditText) findViewById(R.id.et_search);

        mListView = (ListView) findViewById(R.id.lvView);

        mWeatherAdapter = new WeatherAdapter(this, weatherInfoList);

        mListView.setAdapter(mWeatherAdapter);

        //设置TextWathcer()根据输入框的文本变化显示不同的list

        mSearchEt.addTextChangedListener(new TextWatcher() {

            @Override

            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override

            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override

            public void afterTextChanged(Editable editable) {

                resultList.clear();

                String searchstr = mSearchEt.getText().toString();

                if(searchstr==null) {

                    mWeatherAdapter.setWeatherInfoList(weatherInfoList);

                    mWeatherAdapter.notifyDataSetChanged();

                } else {

                    for (int i = 0; i < weatherInfoList.size(); i++) {

                        String cityname = weatherInfoList.get(i).getCity();

                        if (cityname.contains(searchstr) || searchstr.contains(cityname)) {

                            resultList.add(weatherInfoList.get(i));

                        }

                    }

                    //更新Adatper对应的数据

                    mWeatherAdapter.setWeatherInfoList(resultList);

                    mWeatherAdapter.notifyDataSetChanged();

                }

            }

        });

    }

}

看看WeatherAdapter的代码，WeatherAdapter继承BaseAdapter

//继承BaseAdapter，需要复写几个方法

public class WeatherAdapter extends BaseAdapter {

    private static final String TAG = "WeatherAdapter";

    private Context context;

    private List<WeatherInfo> weatherInfoList;

    public WeatherAdapter(Context context, List<WeatherInfo> weatherInfoList) {

        this.context = context;

        this.weatherInfoList = weatherInfoList;

    }

    @Override

    public int getCount() {

        return weatherInfoList.size();

    }//list的size

    @Override

    public WeatherInfo getItem(int i) {

        return weatherInfoList.get(i);

    }//获取天气信息

    @Override

    public long getItemId(int i) {

        return i;

    }//获取Item的id

    @Override

    public View getView(int i, View view, ViewGroup viewGroup) {

    //这个方法比较关键，返回Item view

        if (view == null) {

            view = LayoutInflater.from(context).inflate(R.layout.listviewitem, null);

        }

        ImageView weatherimage = (ImageView) view.findViewById(R.id.weatherimage);

        TextView cityname = (TextView) view.findViewById(R.id.cityname);

        TextView temp = (TextView) view.findViewById(R.id.temp);

        TextView weather = (TextView) view.findViewById(R.id.weather);

        WeatherInfo weatherInfo = weatherInfoList.get(i);

        cityname.setText(weatherInfo.getCity());

        temp.setText(weatherInfo.getTemp1() + " ~ " + weatherInfo.getTemp2());

        String weatherstr = weatherInfo.getWeather();

        weather.setText(weatherstr);

        //这里大致使用几个图片，具体做法，不同的json数据查询api中应该可以查询到支持的天气种类，根据查询到的种类设置不用的图片，这里暂且只分为4种，避免我的apk界面太丑 不忍直视

        if(weatherstr.contains("雨")) {

            weatherimage.setImageResource(R.drawable.rain);

        } else if(weatherstr.contains("阴")) {

            weatherimage.setImageResource(R.drawable.yin);

        } else if(weatherstr.contains("云")) {

            weatherimage.setImageResource(R.drawable.cloud);

        } else if(weatherstr.contains("雪")) {

            weatherimage.setImageResource(R.drawable.snow);

        } else {

            weatherimage.setImageResource(R.drawable.sun);

        }

        return view;

    }

    //方便替换List

    public void setWeatherInfoList(List<WeatherInfo> list) {

        this.weatherInfoList = list;

    }

}

基本效果图：（录屏大师录屏）

源代码下载路径：

http://download.csdn.net/detail/poorkick/9510243

缺陷：

1. 每次进入需要载入数据，可以替换成根据时间戳判断是否数据有更新,当然这个对查询借口有点依赖，本地通过数据库存储当前信息

2. 天气信息由于使用的是气象台的，数据更新自己本身无法掌握，可以替换成其他查询接口

3. 后续可能会再做一个更完善的天气预报应用，采用新的查询接口和UI界面

界面简陋，代码不完善，见谅，工作之余练手之作。