Sharing files between android apps? -

-

can suggest how can share file between n number of android applications? suggest me links, code etc? in advance !!

look @ android.support.v4.content.fileprovider. component can share file 1 app other apps in system means of content uri, allows hosting app use uri (not file) permissions control file. means hosting app can set temporary access permissions instead of permanently changing file's permissions. there's no performance penalty, every time app needs file can content uri , temporary permissions. secure.

fileprovider subclass of contentprovider, , works in same way.

the current reference doc bit vague. i'll try summarize:

hosting app needs declare provider in manifest:

<provider     android:name="android.support.v4.content.fileprovider"     android:authorities=authority     android:exported="false"     android:granturipermissions="true">     <meta-data>         android:name="android.support.file_provider_paths"         android:resource="@xml/some_name" /> </provider>
  • "authority" uri authority make up.
  • some_name name of xml file put in project (usually in xml/ subdirectory.

the contents of some_name.xml is

<paths>     <files-path name="path-segment" path="filepath"/>     ... </paths

files-path

shares files in private file area (value returned context.getfilesdir()), can share files in external area , cache area.

filepath

is subdirectory in private file area, example images/. path-segment corresponding path goes content uri. example, if use authority of

com.example.myapp.fileprovider

and put in

<files-path name="images" path="images/">

then resulting content uri starts with

content://com.example.myapp.fileprovider/images

if want share out file images/myimage.jpg, resulting content uri is

content://com.example.myapp.fileprovider/images/myimage.jpg

the hosting app generates content uri calling `fileprovider.geturiforfile()

what's nice don't have implement subclass of fileprovider in code; it's default behavior sufficient people's needs.

see javadoc more info.


Comments

Post a Comment

Popular posts from this blog

java - Run a .jar on Heroku -

-
i trying run .jar file on heroku, , can't find instructions anywhere on how this. have read wants me compile uploading heroku. possible, , if is, how this? if helps, trying run minecraft craftbukkit server, , don't have pom.xml file yet. you didn't provide details i'll try give , people reaches question way it. first of all, create heroku account , create heroku application (assumed have done that). second, need generate application jar , upload heroku. so, open terminal , install heroku cli (assuming unix terminal): $ sudo npm install -g heroku-cli you need have npm , nodejs installed, can check link: https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-ubuntu-16-04 once done that, can use npm update node version acceptable heroku-cli: $ sudo npm install -g n $ sudo n 7.10.0 and run: $ sudo npm install -g heroku-cli in order deploy jars, need install deploy plugin: $ sudo heroku plugins:install heroku-cli-deploy ...
Read more

java - Jtable duplicate Rows -

-
Image
when add new rows in jtable duplicate rows many times this method update jtable public final void tableaucomande(){ ((defaulttablemodel)tabcommande.getmodel()).getdatavector().clear(); session s=hibernateutil.getsessionfactory().opensession(); criteria cr1= s.createcriteria(commande.class); list <commande> lcs=cr1.list() ; criteria cr2= s.createcriteria(lignecommande.class); list <lignecommande> lck=cr2.list() ; if(lcs.size()!=0 && lck.size()!=0) { (commande lc:lcs) { for(lignecommande lig:lck){ ((defaulttablemodel)tabcommande.getmodel()).addrow(new object[]{ lc.getid_cmd(),lc.getnumcmd(),lc.getdate_cmd(),lc.getclient().getnomprenom(), lig.getproduit().getlib_prd(),lig.getquantite(),lig.getproduit().getid_prd() }); } } // tabcommande.setrowselectioninterval(tabcommande.getrowcount()-1,tabcommande.getrowcount()-1); } } this code add add data rows displaye...
Read more

validation - How to pass paramaters like unix into windows batch file -

-
i need pass various parameters .cmd file unix format file.cmd -configuration=value -source=value -flag but, try this: startlocal @echo off cls setlocal set cmdline=%* set configuration= set source= set badargs= set validation= goto main :splitargs echo splitargs(%*) if "%*" neq "" ( /f "tokens=1,2,* delims== " %%i in ("%*") call :assignkeyvalue %%i %%j & call :splitargs %%k ) goto :eof :assignkeyvalue echo assignkeyvalue(%1, %2) if /i %1==-configuration ( set configuration=%2 ) else if /i %1==-source ( set source=%2 ) else ( rem append unrecognised [key,value] badargs echo unknown key %1 set badargs=%badargs%[%1, %2] ) goto :eof :validate echo validating set validation=fail if defined configuration ( echo -configuration ok if defined source ( echo -source ok if not defined badargs ( set validation=success ) ) ) goto :eof :main cl...
Read more