Android 天氣預報2

前面已經講過了基于JSON資料解析的天氣預報的開發，這次我們主要涉及的是基于WebService的天氣預報。

學習WebService需要具備以下知識。

1.SOAP（Simple Object Access Protocol）

[簡單對象通路協定](http://zh.wikipedia.org/zh-cn/SOAP)

2.WSDL（Web Service Discription language）

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

3.UDDI(Universal Description ,Description and Integration)

[統一描述，發現和整合協定](https://zh.wikipedia.org/zh-cn/UDDI)

這裡涉及到的是對SOAP操作

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

如果需要對WSDL想了解的話。請猛點

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

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

首先我們通過這裡的wsdl的資訊得知有如下方法

1.getRegionCountry 

獲得國外國家名稱和與之對應的ID

輸入參數：無，傳回資料：一維字元串數組。、

2.getRegionDataset 

獲得中國省份、直轄市、地區；國家名稱（國外）和與之對應的ID

輸入參數：無，傳回資料：DataSet。

3.**getRegionProvince 

獲得中國省份、直轄市、地區和與之對應的ID

輸入參數：無，傳回資料：一維字元串數組。

4.getSupportCityDataset 

獲得支援的城市/地區名稱和與之對應的ID

輸入參數：theRegionCode = 省市、國家ID或名稱，傳回資料：DataSet。

5.**getSupportCityString 

獲得支援的城市/地區名稱和與之對應的ID

輸入參數：theRegionCode = 省市、國家ID或名稱，傳回資料：一維字元串數組。

6.**getWeather 

獲得天氣預報資料

輸入參數：城市/地區ID或名稱，傳回資料：一維字元串數組。

這裡隻是用到了加黑的方法。方法如下

1.到code.google.com/p/ksoap2-android/下載下傳jar檔案（ksoap-android-assembly.jar）這裡可以從附件中獲得。

2.将jar添加到項目中。加入Build Path

3.如何使用ksoap-android

        1.建立HttpTransportSE對象，調用WebService

        2.建立SoapSerializationEnvelope對象

        3.SoapObject對象建立，傳圖方法和命名空間

        4.為SoapObject設定屬性值

        5.設定SoapObject為SoapSerializationEnvelope的傳出消息

        6.調用call()

        7.利用SoapSerializationEnvelope讀出對象，獲得屬性值。

見代碼

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;

}

}

}