[Solved] Writing to Android logfile.
lazarus / 43-Android

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iru · 2022-08-04 07:15

Environment Win10, Laz 2012, fpc 3.20 Laz4Android2.0.12. All works OK.

Gentlefolk,

How do I write to the Android log file in the JNI application?????
I have a nasty bug/bad-code/? problem addressing a variable length
array and writing some log file entries would be a great help.

Ian.

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DonAlfredo · 2022-08-04 09:06

You might add this into your code.
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i {$ifdef
Android}const      ANDROID_LOG_UNKNOWN=0;      ANDROID_LOG_DEFAULT=1; 
    ANDROID_LOG_VERBOSE=2;      ANDROID_LOG_DEBUG=3;     
ANDROID_LOG_INFO=4;      ANDROID_LOG_WARN=5;     
ANDROID_LOG_ERROR=6;      ANDROID_LOG_FATAL=7;     
ANDROID_LOG_SILENT=8; function
__android_log_write(prio:cint;tag,text:PAnsiChar):cint; cdecl;
external 'liblog.so' name '__android_log_write';{$endif}In your code,
use:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i procedure
ShowLogMessage(value:ansistring);begin  {$ifdef Android} 
__android_log_write(ANDROID_LOG_INFO,'my app
logger',pansichar(value));  {$else}    {$ifndef LCL}    writeln('my
app logger: '+value);    {$endif}  {$endif}end;

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iru · 2022-08-05 06:32

Thank you, I will give it a try in the next couple of days. Ian

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iru · 2022-08-05 09:45

Add a 'cTypes' to the 'uses' statement and the program compiles
correctly.

Writes to the log file. Now I just have to decipher the results.....

Thank you DonAlfredo you have saved me a lot of time and effort.

Ian