Android Example Share/Show file(s) from internal

Here's a small example how to show/share file(s) from the internal storage (benefits: no permissions are needed)

What it does:

- creates a folder called "shared" (under File.DirInternal)
- this foldername has to be defined in the manifest, too
- after that you handle everything by the filename only (so it must be stored under the given folder. Here it's called "shared")
- 4 textfiles are created (as an example)
- almost any other file will do (like pdf's). Here you have to change the mime type of the file and the filename. See the spoiler for the available types.

With the 3 buttons you can

- show the file's contents
- share a single file (here it's always "1.txt")
- share multiple files (here I share the complete shared folder)


- Android checks if there's an app installed to handle the file(s). To show pdf's you need to have a pdf viewer, for textfiles almost any app will be offered.
- for multiple files it must be an app which can handle multiple files. E.g. my mail app is offered to share with and the files are attached automatically




type=application/octet-stream exts=bin
type=application/astound exts=asd,asn
type=application/fastman exts=lcc
type=application/java-archive exts=jar
type=application/java-serialized-object exts=ser
type=application/java-vm exts=class
type=application/mac-binhex40 exts=hqx
type=application/x-stuffit exts=sit
type=application/mbedlet exts=mbd
type=application/msword exts=doc,dot,wiz,rtf
type=application/oda exts=oda
type=application/pdf exts=pdf
type=application/postscript exts=ai,eps,ps
type=application/studiom exts=smp
type=application/timbuktu exts=tbt
type=application/vnd.ms-excel exts=xls,xlw,xla,xlc,xlm,xlt
type=application/vnd.ms-powerpoint exts=ppt,pps,pot
type=application/vnd.ms-project exts=mpp
type=application/winhlp exts=hlp
type=application/x-javascript exts=js
type=application/x-javascript;charset=UTF-8 exts=jsu
type=application/x-java-jnlp-file exts=jnlp
type=application/x-aim exts=aim
type=application/x-asap exts=asp
type=application/x-csh exts=csh
type=application/x-dvi exts=dvi
type=application/x-earthtime exts=etc
type=application/x-envoy exts=evy
type=application/x-gtar exts=gtar
type=application/x-cpio exts=cpio
type=application/x-hdf exts=hdf
type=application/x-latex exts=latex
type=application/x-javascript-config exts=jsc
type=application/x-maker exts=fm
type=application/x-mif exts=mif,mi
type=application/x-mocha exts=mocha,moc
type=application/x-msaccess exts=mdb
type=application/x-mscardfile exts=crd
type=application/x-msclip exts=clp
type=application/x-msmediaview exts=m13,m14
type=application/x-msmetafile exts=wmf
type=application/x-msmoney exts=mny
type=application/x-mspublisher exts=pub
type=application/x-msschedule exts=scd
type=application/x-msterminal exts=trm
type=application/x-mswrite exts=wri
type=application/x-NET-Install exts=ins
type=application/x-netcdf exts=nc,cdf
type=application/x-ns-proxy-autoconfig exts=proxy
type=application/x-salsa exts=slc
type=application/x-sh exts=sh
type=application/x-shar exts=shar
type=application/x-sprite exts=spr,sprite
type=application/x-tar exts=tar
type=application/x-tcl exts=tcl
type=application/x-perl exts=pl
type=application/x-tex exts=tex
type=application/x-texinfo exts=texinfo,texi
type=application/x-timbuktu exts=tbp
type=application/x-tkined exts=tki,tkined
type=application/x-troff-man exts=man
type=application/x-troff-me exts=me
type=application/x-troff-ms exts=ms
type=application/x-troff exts=t,tr,roff
type=application/x-wais-source exts=src
type=application/zip exts=zip
type=application/pre-encrypted exts=enc
type=application/x-pkcs7-crl exts=crl
type=application/x-fortezza-ckl exts=ckl
type=application/xml-dtd exts=dtd

type=audio/basic exts=au,snd
type=audio/echospeech exts=es,esl
type=audio/midi exts=midi,mid
type=audio/x-aiff exts=aif,aiff,aifc
type=audio/x-wav exts=wav
type=audio/x-pn-realaudio exts=ra,ram
type=audio/x-pac exts=pac
type=audio/x-epac exts=pae
type=audio/x-liveaudio exts=lam

type=drawing/x-dwf exts=dwf

type=image/fif exts=fif
type=image/x-icon exts=ico
type=image/gif exts=gif
type=image/ief exts=ief
type=image/ifs exts=ifs
type=image/jpeg exts=jpeg,jpg,jpe,jfif,pjpeg,pjp
type=image/png exts=png
type=image/tiff exts=tiff,tif
type=image/vnd exts=dwg,svf
type=image/wavelet exts=wi
type=image/bmp exts=bmp
type=image/x-photo-cd exts=pcd
type=image/x-cmu-raster exts=ras
type=image/x-portable-anymap exts=pnm
type=image/x-portable-bitmap exts=pbm
type=image/x-portable-graymap exts=pgm
type=image/x-portable-pixmap exts=ppm
type=image/x-rgb exts=rgb
type=image/x-xbitmap exts=xbm
type=image/x-xpixmap exts=xpm
type=image/x-xwindowdump exts=xwd

type=text/css exts=css

type=text/html exts=htm,html
type=text/plain exts=txt
type=text/richtext exts=rtx
type=text/tab-separated-values exts=tsv
type=text/x-setext exts=etx
type=text/x-speech exts=talk
type=text/xml exts=xml
type=text/xul exts=xul

type=video/isivideo exts=fvi
type=video/mpeg exts=mpeg,mpg,mpe,mpv,vbs,mpegv
type=video/x-mpeg2 exts=mpv2,mp2v
type=video/msvideo exts=avi
type=video/quicktime exts=qt,mov,moov
type=video/vivo exts=viv,vivo
type=video/wavelet exts=wv
type=video/x-sgi-movie exts=movie

type=x-world/x-svr exts=svr
type=x-world/x-vrml exts=wrl
type=x-world/x-vrt exts=vrt

type=x-conference/x-cooltalk exts=ice

enc=x-gzip exts=gz
enc=x-compress exts=z
enc=x-uuencode exts=uu,uue

type=magnus-internal/imagemap exts=map
type=magnus-internal/parsed-html exts=shtml
type=magnus-internal/cgi exts=cgi,exe,bat

type=application/x-x509-ca-cert exts=cacert

type=application/x-x509-server-cert exts=scert
type=application/x-x509-user-cert exts=ucert
type=application/x-x509-email-cert exts=ecert

type=application/vnd.sun.xml.writer exts=sxw
type=application/vnd.sun.xml.writer.template exts=stw
type=application/vnd.sun.xml.calc exts=sxc
type=application/vnd.sun.xml.calc.template exts=stc
type=application/vnd.sun.xml.draw exts=sxd
type=application/vnd.sun.xml.draw.template exts=std
type=application/vnd.sun.xml.impress exts=sxi
type=application/vnd.sun.xml.impress.template exts=sti
type=application/vnd.sun.xml.writer.global exts=sxg
type=application/vnd.sun.xml.math exts=sxm

type=application/vnd.stardivision.writer exts=sdw
type=application/vnd.stardivision.writer-global exts=sgl
type=application/vnd.stardivision.calc exts=sdc
type=application/vnd.stardivision.draw exts=sda
type=application/vnd.stardivision.impress exts=sdd
type=application/vnd.stardivision.impress-packed exts=sdp
type=application/vnd.stardivision.math exts=smf,sdf
type=application/vnd.stardivision.chart exts=sds
type=application/vnd.stardivision.mail exts=sdm
 

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  • ShareFromInternal.zip
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LucaMs

Expert
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Longtime User
Thank you for sharing it.

I haven't run any tests but I have a couple of possibly useful suggestions.

  1. You could put all the source code in a class (and possibly a library)
  2. You could create a code module that acts as an Enum for MIME types.
 

AnandGupta

Well-Known Member
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Longtime User
Here's a small example how to show/share file(s) from the internal storage (benefits: no permissions are needed)
Thanks for the effort. This will be helpful in newer Android versions.
 

aidymp

Well-Known Member
Licensed User
Longtime User
Does not run on any device?
And no log output?

Am I missing something?
 

KMatle

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Longtime User

swChef

Active Member
Licensed User
Longtime User
Does not run on any device?
And no log output?

Am I missing something?

I think I had the same problem as you. I checked the logs (unfiltered) and it complained about FileProvider missing.
Library was not checked/included in the project as downloaded; I did so in the project and now it loads/runs.
I had started with B4A 11.2, then tried 11.5, before digging in.

java.lang.RuntimeException: Unable to get provider androidx.core.content.FileProvider: java.lang.ClassNotFoundException: Didn't find class "androidx.core.content.FileProvider" on path: DexPathList[[zip file "/data/app/~~nh8tBKWWWEYQtlypxwAquw==/b4x.sharefrominternal-wMY_KGJTY9r5rzBVHg5sdg==/base.apk"],nativeLibraryDirectories=[/data/app/~~nh8tBKWWWEYQtlypxwAquw==/b4x.sharefrominternal-wMY_KGJTY9r5rzBVHg5sdg==/lib/arm64, /system/lib64, /system_ext/lib64]]
 
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