Design of handheld Weather Forecast Based on Windows Mobile 5.0

Based on For Windows Mobile 5.0 Handheld weather forecast Design

Overview: DescribeFor Windows Mobile 5.0Weather forecastProgramDesign Process;

Development tools:Visual Studio 2005 (C #/) Windows Mobile 5.0 Pocket pc sdk/wm6Simulator;

Trial model: QidaD600

Keywords:. Net CF, PPC, WebService, Windows Mobile,Weather Forecast

Download the installer: pocketweatherinstall. Cab
DownloadSource code: Pocketweather.rar

In general. NET Compact frameworkThe design procedure is relatively easy to start with. This article gives a brief description of several problems encountered during the design process.

1.Weather Interface

Use a free onlineWebService, SourceWww.webxml.com.cn, Easy to use, callGetweatherbycitynameReturns a string array containing the weather information.

StringCity =This. Lblcurrentcity. Text. Trim ();

Pocketweather.cn.com. webxml. www.WeatherwebserviceWeather =

NewPocketweather.cn.com. webxml. www.Weatherwebservice();

String[] Info = weather. getweatherbycityname (city );

2.Obtain the program running path

PPCIt is still difficult to obtain the current program path:

Public Static StringGetapplicationdirectory ()

{

ReturnSystem. Io.Path. Getdirectoryname (

System. reflection.Assembly. Getexecutingassembly (). getname (). codebase );

}

3.Save User settings

Save User settings in a dataset and save them as local XML files:

DatasetDS =New Dataset("Lastweather");

DatatableTablast =New Datatable("Weather");

Tablast. Columns. Add ("Keystr",Typeof(String));

Tablast. Columns. Add ("Content",Typeof(String));

DatarowRow = tablast. newrow ();

Row ["Keystr"] ="Lbltodayweather";

Row ["Content"] =This. Lbltodayweather. text;

Tablast. Rows. Add (ROW );

Row = tablast. newrow ();

Row ["Keystr"] ="Lastmodifytime";

Row ["Content"] =Systemconfig. Lastmodifytime;

Tablast. Rows. Add (ROW );

DS. Tables. Add (tablast );

DS. writexml (Systemconfig. Getapplicationdirectory () +"Last. xml");

Get dataset from the XML file and then read the data.

DatasetDS =New Dataset();

DS. readxml (Systemconfig. Getapplicationdirectory () +"Last. xml");

DatatableTabsetting = Ds. Tables ["Weather"];

Datarow[] Rows = tabsetting. Select ("Keystr = 'lbltodayweather '");

If(Rows. length! = 0)

{

This. Lbltodayweather. Text = rows [0] ["Content"]. Tostring ();

}

Rows = tabsetting. Select ("Keystr = 'lastmodifytime '");

If(Rows. length! = 0)

{

Systemconfig. Lastmodifytime = rows [0] ["Content"]. Tostring ();

}

4.Input Method panel:

When the input method panel pops up, some user controls will be blocked and it feels bad. The solution is to place the control in a panel and set the autoscroll attribute of the Panel to true, when the Panel status changes, the Panel size is also changed.

PrivateMicrosoft. WindowsCE. forms.InputpanelM_indium

=NewMicrosoft. WindowsCE. forms.Inputpanel();

PublicFormopetion ()

{

Initializecomponent ();

This. M_inp.enabledchanged + =New Eventhandler(M_inp_enabledchanged );

}

VoidM_inp_enabledchanged (ObjectSender,EventargsE)

{

M_panel.size = m_inp.visibleshorttop.size;

}
 
5.Dialog Box:

When the program opens a dialog box, if you switch to another program, and then you will see two records in the list of system running programs, you should avoid this situation; the solution is to modify the window title when the program is activated or stopped:

Private VoidFormopetion_deactivate (ObjectSender,EventargsE)

{

This. Text ="";

}

Private VoidFormopetion_activated (ObjectSender,EventargsE)

{

This. Text ="Set";

}

6.Others:

You should also consider re-adjusting the widget position when rotating the screen.

Interface: