Android Tutorial XML Parsing with the XmlSax library

MikieK

Member
Licensed User
Sorry

:sign0013: Obviously I didn't take into consideration that the file may change when I unmount my SDcard. Sorry for wasting your time.
 

yonson

Active Member
Licensed User
maximum file size for parser?

Hi I've been using the parser to read in an xml file and write the contents to the app's database.

Its all been working fine however I've noticed if the xml file goes over a critical filesize that the parser fails with at the line

parser.Parse2(reader,"Parser")

with 'LastException - java.io.IOException'

The conditions under which this happens is when the filesize of the source xml file approaches 1MB. I can't find anything about this limitation though in the documentation, can someone explain what I'm doing wrong?

Thanks
John
 

yonson

Active Member
Licensed User
thanks for the prompt reply, if I understand correctly then the necessary step is to rename the file as a 'jpg' and then it will read in ok?

I saw Erel has mentioned this on another forum
 

taind

New Member
Hi, Erel!

I have XML :
B4X:
<?xml version="1.0" encoding="utf-8" ?> 
 <string xmlns="http://tempuri.org/">test</string>
How do I get the string "test"?
 

Koushik

Member
Licensed User
List to XML

Hi Erel,

Is there any way to generate XML directly from a list of map objects?

Thanks,
Koushik
 

walterf25

Expert
Licensed User
XML parsing directly

Hi all, i'm new to Basic4Android, i need to figure out how to parse XML information when retrieved directly from a URI Address, i've seen examples here that do this but using a saved file, i need to do it directly after receiving the information from the HTTP client, any help will be greatly appreciated guys

Regards,
Walter Flores
 

AHilberink

Active Member
Licensed User
Trouble with dual TAG

Hello,

Using this fine library I have a little problem.

The main TAG is also used within a SUBTAG. This causes every line twice within my ListView.

XML:
<?xml version="1.0" encoding="windows-1252"?>
<!--DVD Profiler Collection Export-->
<Collection>
<DVD>
<ProfileTimestamp>2008-12-26T18:18:53.000Z</ProfileTimestamp>
<ID>0044005373028.9</ID>
<MediaTypes>
<DVD>true</DVD>
<HDDVD>false</HDDVD>
<BluRay>false</BluRay>
</MediaTypes>
<UPC>0-044005-373028</UPC>
<CollectionNumber>658</CollectionNumber>
<CollectionType>Owned</CollectionType>
<Title>Het Meisje met het Rode Haar</Title>
<DistTrait/>
<OriginalTitle/>
<CountryOfOrigin>Netherlands</CountryOfOrigin>
<ProductionYear>1981</ProductionYear>
<Released>2001-09-05</Released>
<RunningTime>109</RunningTime>
<RatingSystem>Videovoorlichtingsysteem</RatingSystem>
<Rating>12</Rating>
</DVD>

Source:
B4X:
Sub Parser_EndElement (Uri As String, Name As String, Text As StringBuilder)
   If parser.Parents.IndexOf("DVD") > -1 Then
      If Name = "Title" Then
         Title = Text.ToString
      Else If Name = "Released" Then
         Link = Text.ToString
      Else If Name = "RunningTime" Then
         pubDate = Text.ToString
      End If
   End If
   If Name = "DVD" Then
      ListView1.AddSingleLine2(Title, Link) 'add the title as the text and the link as the value
   End If
End Sub
Can someone tell me how to prevent this behaviour?

Thanks,
André
 

Erel

Administrator
Staff member
Licensed User
Try this:
B4X:
Sub Parser_EndElement (Uri As String, Name As String, Text As StringBuilder)
   If parser.Parents.IndexOf("DVD") > -1 Then
      If Name = "Title" Then
         Title = Text.ToString
      Else If Name = "Released" Then
         Link = Text.ToString
      Else If Name = "RunningTime" Then
         pubDate = Text.ToString
      End If
   End If
   If Name = "DVD" AND parser.Parents.IndexOf("DVD") = -1 Then
      ListView1.AddSingleLine2(Title, Link) 'add the title as the text and the link as the value
   End If
End Sub
 

ppousset

New Member
Licensed User
Issues Parsing XML from HTTP Response

Hello, I'm not sure where the issues is. This snippets is from a program that attempts to parse a Yahoo API response. Many posts have shown that this should work. However, I continue to get a Null Value exception: :sign0104:

java.lang.NullPointerException

B4X:
Sub find_Bars(lat,lon As String)
    Dim request As HttpRequest
   URL = "http://local.yahooapis.com/LocalSearchService/V3/localSearch?appid=YahooDemo"
    request.InitializeGet(URL & "&query=bar" & "&results=20" & "&radius=10" & "&latitude=42.53" & "&longitude=-83.73")
   request.Timeout = 10000
    If HttpClient1.Execute(request, 1) = False Then Return 
End Sub
Sub HttpClient1_ResponseSuccess (Response As HttpResponse, TaskId As Int)
Dim result As InputStream
result = Response.GetInputStream
parser.Parse(result, "Parser")
End Sub
'Sub HttpClient1_ResponseSuccess (Response As HttpResponse, TaskId As Int)
'Dim result As String
'result = Response.getstring("UTF8")
'Log(result)
'End Sub
When the second sub HttpClient1_ResponseSuccess is substituted, the xml response is returned correctly.

Thanks for your help.
 

stevel05

Expert
Licensed User
I have not looked at parsing, so probably can't help with that. But if you post your project (zipped) those that could help you would have a starting point without having to re-invent the wheel. And may be able to find a problem with your code without having to do too much work.

And you could have a solution in less time.
 

neelmon

Member
Licensed User
Thanks for your quick reply.

I have used the following code for testing:

Sub Parser_EndElement (Uri As String, Name As String, Text As StringBuilder)
If Parser.Parents.IndexOf("item") > -1 Then
Log(Name & "-->" & Text)
End If
End Sub

After one iteration, its giving an error at following line:

parser.Parse(resultString,"Parser")

Error Details:
org.apache.harmony.xml.ExpatParser$ParseException: At line 86, column 0: not well-formed (invalid token)

At this point LOG is showing:


title-->Senior ASP.NET/SQL Server Developer (I-10 &amp; Elliott)
link-->Senior ASP.NET/SQL Server Developer

I dont know if these details will help you to identify the problem.
 

walterf25

Expert
Licensed User
XML parsing

Hello guys, i was wondering if anyone here can help me out figure out how to parse an xml portion below is the exact portion i'm working with, my code is working i get no error but i get nothing,

B4X:
<result>
<rep name="Brad Sherman" party="D" state="CA" district="27" phone="202-225-5911" office="2242 Rayburn House Office Building" link="http://bradsherman.house.gov/"/>
<rep name="Howard Berman" party="D" state="CA" district="28" phone="202-225-4695" office="2221 Rayburn House Office Building" link="http://www.house.gov/berman/"/>
<rep name="Barbara Boxer" party="D" state="CA" district="Junior Seat" phone="202-224-3553" office="112 Hart Senate Office Building" link="http://boxer.senate.gov"/>
<rep name="Dianne Feinstein" party="D" state="CA" district="Senior Seat" phone="202-224-3841" office="331 Hart Senate Office Building" link="http://feinstein.senate.gov"/>
</result>
here's my portion of my code that takes care of the parsing
can anyone look at it and maybe give me some pointers, i know i must be missing something, any and all help will be greatly appreciated

B4X:
Sub Parser_EndElement (Uri As String, Name As String, Text As StringBuilder)
Dim replistview1 As List
replistview1.Initialize
   If parser.Parents.IndexOf("result") > -1 Then
      If Name = "rep" Then
         repname = Text.ToString
      End If
   End If
   If Name = "result" Then
   ToastMessageShow(repname, True)
   End If


End Sub
thank you guys
:sign0163:
 
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