[SOLVED][Android] call external library with a string type in
parameter ?
lazarus / 43-Android

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ROCABDEL · 2012-06-15 08:06

I just did the test on the bass library, but I could not go too far ..
I happen to load the dll and initialize it, the problem is how to call
a function with a "string" type..

ex:

in Bass.pas i:
 Code: [Select]BASS_StreamCreateFile      : function(mem: BOOL; f:
Pointer; offset, length: QWORD; flags : DWORD): HSTREAM;
and in BASS.java i:
 Code: [Select]public static native int BASS_StreamCreateFile(String
file, long offset, long length, int flags);
I called in the first BASS_StreamCreateFile with PChar(F) but the
second I do not know how to call it.

Sorry for my English 
thx

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felipemdc · 2012-06-15 08:23

You can access Java APIs using JNI, I just added an example here:

http://wiki.freepascal.org/Android_Programming#Example_1:_Creating_a_J
ava_object_and_calling_a_Java_method

Try to use it as an example and build your own JNI code. If you have
trouble then post here your partial JNI code and I will help you fix
it and make it work.

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ROCABDEL · 2012-06-15 08:28

Ok thank you felipemdc  to answer so fast 
I will try Thx

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felipemdc · 2012-06-15 09:52

Yours is a bit different from my example, so I created a pseudo-code
which might work explaining how to call static methods here:

http://wiki.freepascal.org/Android_Programming#Example_2:_Calling_a_st
atic_method

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ROCABDEL · 2012-06-16 22:37

thank you it works, I think I understand now, the problem is resolved.
Thanks for the beautiful work you do, good continuation ...