Archived:Building and Testing Applications with the WidSet SDK
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Introduction
This article uses Windows XP or Using Nokia SDKs and Tools on Windows Vista
Successful build
The development process with the SDK is based on command shell using Java.
There are several commands which need describing. To make this simple the
[Hello world] example is used. The files are created from the article in directory
The code has been installed on drive D:\devkit
- 'Check'ing the code
D:\devkit>devkit 'check' D:\devkit\examples\hello_world
Resulting output is
14.07.2008 01:33:53.966 NORMAL Widget info 14.07.2008 01:33:53.966 NORMAL 1 parameters 14.07.2008 01:33:53.966 NORMAL 2 resources 14.07.2008 01:33:53.966 NORMAL Layout, 2 views 14.07.2008 01:33:53.966 NORMAL Loading took: 78ms 14.07.2008 01:33:54.29 NORMAL Required client version: 0.0.0 14.07.2008 01:33:53.966 NORMAL widget.xml:20 (resource) resource file hello_world.he exists 14.07.2008 01:33:54.29 NORMAL widget.xml:20 (resource) Code compilation complete. 14.07.2008 01:33:54.76 NORMAL widget.xml:21 (resource) Stylesheet compiled Check OK
The following command is used to check individual files
- 'Compile' FILE [LANG] Checks given script
Example
D:\devkit>devkit compile D:\devkit\examples\hello_world\hello_world.he Required client version: 0.0.0 Compile OK
- 'Runw' Command will compile and build *.he and replace widget scripts on dashboard
Example
D:\devkit>devkit runw D:\devkit\examples\hello_world
When running you will see the widget being built and uploaded
INFO java.version=1.6.0_06 INFO java.vendor=Sun Microsystems Inc. INFO Device=/devices/cool.properties INFO RMS provider=vajax.microedition.rms.file.FileRMS, maxSize=1000000 INFO RMS root=C:\Users\Jim\.widsets\default\WidSets WARN Missing config: idle.rows INFO Classloader=sun.misc.Launcher$AppClassLoader@11b86e7 INFO MIDlet=mango.client.Client ==> Compiling hello_world.he... ==> Compile OK ==> Uploading C:\Users\Jim\AppData\Local\Temp\widsets_39068.zip, (1kB)... NORMAL Widget info NORMAL 1 parameters NORMAL 2 resources NORMAL Layout, 2 views NORMAL Loading took: 1ms NORMAL Required client version: 0.0.0 NORMAL widget.xml:20 (resource) resource file hello_world.he exists NORMAL widget.xml:20 (resource) Code compilation complete. NORMAL widget.xml:21 (resource) Stylesheet compiled ==> Created widget 287523885 ==> Created instance 287523890 ==> UPLOAD OK Further down the log is found reference to hello_world 18:54:10.179: 287523890,287523885,,hello_world,1216144439159,65sp 18:54:30.748: Local code for hello_world.hx Finally with the transfer complete the SDK goes offline 19:02:29.974: Going OFFLINE 19:02:29.991: Reader stopped 19:02:30.015: OFFLINE 19:02:30.020: ** handleMessage connection 0 19:02:30.020: Writer stopped
User command line errors
- 'The directory you have given to be checked does not exist'
D:\devkit>devkit check 'D:\devkit\examples\example_hello_world'
Exception in thread "main" java.lang.'NullPointerException'
at vajax.tools.Main.checkCommand(Main.java:93)
at vajax.tools.Main.run(Main.java:521)
at vajax.tools.Main.main(Main.java:589)
- 'compile' error the user has given a directory and should have given 'filename.he'
D:\devkit>devkit compile D:\devkit\examples\hello_world
File D:\devkit\examples\hello_world is not a file
The 'run' command has been replaced by the 'compile'
without adding the filename with *.he extension
Syntax Error detection
The operator 'new' was has a spelling error the error was
detected the line number was printed with the source text of the error.
The compiler has expected a semicolon line terminator
.
The compilation 'stops after the first error' any futher errors
will 'NOT' be detected.
D:\devkit>devkit compile D:\devkit\examples\hello_world\hello_world.he (38:19) Syntax error, was expecting ;. 38. return newt Label(style, "Hello World");
The error has now been corrected and the second error is now seen
The typing error in a function gives a better error description message
(46:5) Could not find match for 'setMinimizedXView(View)'.
46. setMinimized'X'View(createView("viewMini", getStyle("bg")));
The casting programming error of 'int = long' is not detected, but will
cause runtime problems which will need wasteful debugging effort.
Error Messages
- 'Invalid version'
The version of widget spec version is higher then the SDK can work with.
The widget.xml contains the wrong version in this version '2.1'
<?xml version="1.0" encoding="utf-8"?> <widget spec_version="2.1"> <info>
The corrected version is edited using a text editor to working version '2.0'
<?xml version="1.0" encoding="utf-8"?> <widget spec_version="2.0"> <info>
- 'Pressing to "Go Offline" button when already OFFLINE status in emulator'
17:51:24.284: CONNECTING
17:51:24.284: ** handleMessage connection 1
17:51:24.316: Open: Begin
17:51:24.316: Opening: socket://mobile3.widsets.com:8081
17:51:24.331: Open: java.net.UnknownHostException: mobile3.widsets.com
17:51:24.331: HTTP starting: http://mobile3.widsets.com/comm/
17:51:24.534: HTTP error1: java.net.UnknownHostException: mobile3.widsets.com
17:51:24.534: HTTP stopped
17:51:24.534: OFFLINE
17:51:24.534: ** handleMessage connection 0
17:52:19.758: Going OFFLINE
java.lang.NullPointerException
vajax.microedition.lcdui.DeviceDisplay.mousePressed(DeviceDisplay.java:236)
Disclaimer
While reading, please do keep in mind that both this Wiki page and the WidSets developer kit are still undergoing development, and that things are likely to change in the near future, as every WidSets release brings something new
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