iOS Question Exception: Target is null. Method called: Contains:

schimanski · Nov 11, 2014

Not always, but sometimes I get an errormessage for this line:

B4X:

If Nachricht.Contains("[@TIP@]§AUTHENxxxx") Then

Does somebody knows something about it? Thanks for help.

B4X:

Error occurred on line: 213 (server)
Target is null. Method called: Contains:
Stack Trace: (
  CoreFoundation       <redacted> + 150
  libobjc.A.dylib      objc_exception_throw + 38
  CoreFoundation       <redacted> + 0
  Foxfinder            +[B4I runDynamicMethod:method:throwErrorIfMissing:args:] + 196
  Foxfinder            -[B4IShell runMethod:] + 496
  Foxfinder            -[B4IShell raiseEventImpl:method:args::] + 1846
  Foxfinder            -[B4IShellBI raiseEvent:event:params:] + 1280
  Foxfinder            __50-[B4I raiseEventFromDifferentThread:event:params:]_block_invoke + 74
  libdispatch.dylib    <redacted> + 10
  libdispatch.dylib    <redacted> + 22
libdispatch.dylib    _dispatch_main_queue_callback_4CF + 718
CoreFoundation       <redacted> + 8
CoreFoundation       <redacted> + 1512
CoreFoundation       CFRunLoopRunSpecific + 476
CoreFoundation       CFRunLoopRunInMode + 106
GraphicsServices     GSEventRunModal + 136
UIKit                UIApplicationMain + 1440
Foxfinder            main + 116
libdyld.dylib        <redacted> + 2
)
Log:  Target is null. Method called: Contains:
Log:  Target is null. Method called: Contains:

Erel · Nov 11, 2014

This error means that the map was not initialized.

schimanski · Nov 11, 2014

Sorry, to little info: Nachricht is a string in that case and 'contains' the string-function, not a map....

Erel · Nov 11, 2014

Where are you assigning its value?

schimanski · Nov 11, 2014

I get the data from a serverstream...

B4X:

 filestream_NewData (Buffer() As Byte)
    Try
      
       
        Dim Nachricht As String
        Nachricht = BytesToString(Buffer, 0, Buffer.Length, "windows-1252")

Erel · Nov 11, 2014

This means that BytesToString failed to decode the data as valid string (I've changed the behavior to throw an exception in that case).

Are you using AsyncStreams in prefix mode?

schimanski · Nov 11, 2014

I don't use AsyncStreams.initializePrefix. I only use AsyncStreams.initialize.

Erel · Nov 11, 2014

This means that you should expect messages to be split (or merged) and handle this.

You can try to use ASCII as the encoding. It will most probably accept any data you give it.

schimanski · Nov 11, 2014

ASCII works...much thanks for your efforts

iOS Question Exception: Target is null. Method called: Contains:

schimanski

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Erel

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schimanski

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Erel

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schimanski

Well-Known Member

Erel

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schimanski

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Erel

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schimanski

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