does laz4android support tstream and tprocess class?
lazarus / 43-Android

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halflifezy · 2013-11-02 04:37

does laz4android support tstream and tprocess class?an all lazarus
runtime functions supported?

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Leledumbo · 2013-11-02 13:04

TStream, I think so, it's pure Pascal and doesn't require special OS
support. TProcess, not sure, however.

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halflifezy · 2013-11-02 13:57

TStream include TMemoryStream and TFileStream,support them all?
if not support TProcess,how about SysUtils.ExecuteProcess?

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Leledumbo · 2013-11-02 15:14

QuoteTStream include TMemoryStream and TFileStream,support them
all?Yes.
Quoteif not support TProcess,how about
SysUtils.ExecuteProcess?Shouldn't differ much, I guess. TProcess is
implemented with fork() while SysUtils.ExecuteProcess is with
execve().

Anyway, why don't you just try them?

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halflifezy · 2013-11-02 15:30

thanks ,

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halflifezy · 2013-11-03 13:27

bad news. i have a try.they were not support at all.when i press
button,it exit immediately

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Leledumbo · 2013-11-03 21:30

I will test later

EDIT: What TStream descendant are you trying to use? Everything other
than TFileStream seems to work fine, TFileStream does cause a crash
though, probably I miss certain permission.

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marcov · 2013-11-04 09:01

Quote from: Leledumbo on November 02, 2013, 04:14:02 pm Shouldn't
differ much, I guess. TProcess is implemented with fork() while
SysUtils.ExecuteProcess is with execve().

Both do a fork and execve. TProcess mostly supports piping and
changing of directory in addition.

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halflifezy · 2013-11-05 04:35

Quote from: Leledumbo on November 03, 2013, 10:30:28 pmI will test
later

EDIT: What TStream descendant are you trying to use? Everything other
than TFileStream seems to work fine, TFileStream does cause a crash
though, probably I miss certain permission.


yes,i just use TFileStream.and what about SysUtils.ExecuteProcess?and
thank you for test.

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halflifezy · 2013-11-05 09:42

i have test again,it seems that TMemoryStream and TFileStream(i add
other permissions) works fine,
but SysUtils.ExecuteProcess can not work. BeginThread can not work
too.
other runtime funtions i have not test yet.
at last how to solve SysUtils.ExecuteProcess and BeginThread?

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Leledumbo · 2013-11-05 10:41

QuoteTFileStream(i add other permissions) works fineWhat's the correct
permission? I add android.permission.WRITE_EXTERNAL_STORAGE but it
still fails.

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halflifezy · 2013-11-05 13:17

Quote from: Leledumbo on November 05, 2013, 11:41:49
amQuoteTFileStream(i add other permissions) works fineWhat's the
correct permission? I add android.permission.WRITE_EXTERNAL_STORAGE
but it still fails.
sorry ,i do not know, i use the permission import from delphi xe5(add
all permission).

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halflifezy · 2013-11-06 13:44

maybe SysUtils.ExecuteProcess can not work.

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Leledumbo · 2013-11-06 15:48

Quotemaybe SysUtils.ExecuteProcess can not work.I'm not sure, but
perhaps direct binary execution is not allowed in android. It must
reside in library and be called through android activity CMIIW.

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halflifezy · 2013-11-07 04:44

Quote from: Leledumbo on November 06, 2013, 04:48:14 pmQuotemaybe
SysUtils.ExecuteProcess can not work.I'm not sure, but perhaps direct
binary execution is not allowed in android. It must reside in library
and be called through android activity CMIIW.

i have see somebody use eclipse with 'su chmod 777 xxxxxxx'
command.maybe it is only in java now,and perhaps lazarus  will improve
in future version.