Android 天气预报2

前面已经讲过了基于JSON数据解析的天气预报的开发，这次我们主要涉及的是基于WebService的天气预报。

学习WebService需要具备以下知识。

1.SOAP（Simple Object Access Protocol）

[简单对象访问协议](http://zh.wikipedia.org/zh-cn/SOAP)

2.WSDL（Web Service Discription language）

[WebService描述语言](http://zh.wikipedia.org/zh-cn/WSDL)

3.UDDI(Universal Description ,Description and Integration)

[统一描述，发现和整合协议](https://zh.wikipedia.org/zh-cn/UDDI)

这里涉及到的是对SOAP操作

首先看我们的wsdl源：http://webservice.webxml.com.cn/WebServices/WeatherWS.asmx?wsdl

如果需要对WSDL想了解的话。请猛点

1.http://www.w3school.com.cn/wsdl/index.asp 

2.http://www.360doc.com/content/08/1113/23/56145_1920514.shtml

首先我们通过这里的wsdl的信息得知有如下方法

1.getRegionCountry 

获得国外国家名称和与之对应的ID

输入参数：无，返回数据：一维字符串数组。、

2.getRegionDataset 

获得中国省份、直辖市、地区；国家名称（国外）和与之对应的ID

输入参数：无，返回数据：DataSet。

3.**getRegionProvince 

获得中国省份、直辖市、地区和与之对应的ID

输入参数：无，返回数据：一维字符串数组。

4.getSupportCityDataset 

获得支持的城市/地区名称和与之对应的ID

输入参数：theRegionCode = 省市、国家ID或名称，返回数据：DataSet。

5.**getSupportCityString 

获得支持的城市/地区名称和与之对应的ID

输入参数：theRegionCode = 省市、国家ID或名称，返回数据：一维字符串数组。

6.**getWeather 

获得天气预报数据

输入参数：城市/地区ID或名称，返回数据：一维字符串数组。

这里只是用到了加黑的方法。方法如下

1.到code.google.com/p/ksoap2-android/下载jar文件（ksoap-android-assembly.jar）这里可以从附件中获得。

2.将jar添加到项目中。加入Build Path

3.如何使用ksoap-android

        1.创建HttpTransportSE对象，调用WebService

        2.创建SoapSerializationEnvelope对象

        3.SoapObject对象创建，传图方法和命名空间

        4.为SoapObject设置属性值

        5.设置SoapObject为SoapSerializationEnvelope的传出消息

        6.调用call()

        7.利用SoapSerializationEnvelope读出对象，获得属性值。

见代码

package com.cater.weather;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import org.ksoap2.SoapEnvelope;

import org.ksoap2.serialization.SoapObject;

import org.ksoap2.serialization.SoapSerializationEnvelope;

import org.ksoap2.transport.HttpTransportSE;

import org.xmlpull.v1.XmlPullParserException;

import android.app.Activity;

import android.content.Context;

import android.graphics.Color;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemSelectedListener;

import android.widget.BaseAdapter;

import android.widget.EditText;

import android.widget.Spinner;

import android.widget.TextView;

public class WeatherActivity extends Activity

{

private final static String uri = "http://webservice.webxml.com.cn/WebServices/WeatherWS.asmx";

private final static String namespace = "http://WebXml.com.cn/";

private static HttpTransportSE httpTransportSE;

private static SoapSerializationEnvelope envelope;

private static SoapObject soapObject;

private Spinner provinceSpinner;

private Spinner citySpinner;

private EditText editText;

@Override

protected void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.weather);

provinceSpinner = (Spinner) findViewById(R.id.spinner1);

citySpinner = (Spinner) findViewById(R.id.spinner2);

editText = (EditText) findViewById(R.id.editText1);

httpTransportSE = new HttpTransportSE(uri);

httpTransportSE.debug = true;

envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

envelope.dotNet = true;

List<String> provinces = getRegionProvince();

ListAdapter provinceAdapter = new ListAdapter(WeatherActivity.this, provinces);

provinceSpinner.setAdapter(provinceAdapter);

provinceSpinner.setOnItemSelectedListener(new OnItemSelectedListener()

{

@Override

public void onItemSelected(AdapterView<?> view, View parent, int position, long id)

{

List<String> cities = getCityListByProvince(provinceSpinner.getSelectedItem().toString());

ListAdapter cityAdapter = new ListAdapter(WeatherActivity.this, cities);

citySpinner.setAdapter(cityAdapter);

citySpinner.setOnItemSelectedListener(new OnItemSelectedListener()

{

@Override

public void onItemSelected(AdapterView<?> view, View parent, int position, long id)

{

showWeather(citySpinner.getSelectedItem().toString());

}

@Override

public void onNothingSelected(AdapterView<?> arg0)

{

}

});

}

@Override

public void onNothingSelected(AdapterView<?> arg0)

{

}

});

}

private void showWeather(String city)

{

SoapObject soapObject = getWeatherByCity(city);

String weatherOfToday = soapObject.getProperty(4).toString();

editText.setText(weatherOfToday);

}

private static List<String> getRegionProvince()

{

String methodName = "getRegionProvince";

soapObject = new SoapObject(namespace, methodName);

envelope.bodyOut = soapObject;

try

{

httpTransportSE.call(namespace + methodName, envelope);

if (envelope.getResponse() != null)

{

SoapObject result = (SoapObject) envelope.bodyIn;

SoapObject detail = (SoapObject) result.getProperty(methodName + "Result");

return parseProvinceOrCity(detail);

}

}

catch (IOException e)

{

e.printStackTrace();

}

catch (XmlPullParserException e)

{

e.printStackTrace();

}

return null;

}

private static List<String> parseProvinceOrCity(SoapObject detail)

{

List<String> list = new ArrayList<String>();

for (int i = 0; i < detail.getPropertyCount(); i++)

{

list.add(detail.getProperty(i).toString().split(",")[0]);

}

return list;

}

private static List<String> getCityListByProvince(String province)

{

String methodName = "getSupportCityString";

soapObject = new SoapObject(namespace, methodName);

soapObject.addProperty("theRegionCode", province);

envelope.bodyOut = soapObject;

try

{

httpTransportSE.call(namespace + methodName, envelope);

if (envelope.getResponse() != null)

{

SoapObject result = (SoapObject) envelope.bodyIn;

SoapObject detail = (SoapObject) result.getProperty(methodName + "Result");

return parseProvinceOrCity(detail);

}

}

catch (IOException e)

{

e.printStackTrace();

}

catch (XmlPullParserException e)

{

e.printStackTrace();

}

return null;

}

private static SoapObject getWeatherByCity(String cityName)

{

String methodName = "getWeather";

soapObject = new SoapObject(namespace, methodName);

soapObject.addProperty("theCityCode", cityName);

envelope.bodyOut = soapObject;

try

{

httpTransportSE.call(namespace + methodName, envelope);

if (envelope.getResponse() != null)

{

SoapObject result = (SoapObject) envelope.bodyIn;

SoapObject detail = (SoapObject) result.getProperty(methodName + "Result");

return detail;

}

}

catch (IOException e)

{

e.printStackTrace();

}

catch (XmlPullParserException e)

{

e.printStackTrace();

}

return null;

}

private class ListAdapter extends BaseAdapter

{

private List<String> list;

private Context context;

public ListAdapter(Context context, List<String> list)

{

this.context = context;

this.list = list;

}

@Override

public int getCount()

{

if (list == null)

{

return 0;

}

return list.size();

}

@Override

public Object getItem(int position)

{

if (list != null)

{

return list.get(position);

}

return null;

}

@Override

public long getItemId(int position)

{

return position;

}

@Override

public View getView(int position, View convertView, ViewGroup parent)

{

TextView textView = new TextView(context);

textView.setTextColor(Color.BLACK);

textView.setText(list.get(position));

return textView;

}

}

}