Questions tagged as 'content-provider'

Would someone please help me with what would be the synchronization of mobile contacts with my application? I manage to obtain them through a code, but it turns out that they are repeated, so I see this is given by whatsapp, etc. Because I try o...

I try to synchronize the contacts of the mobile device with a database in this case Postgresql, the way I do it does not seem to be the most convenient. public void sincronizarcontactos(){ // Se tiene permiso final String[] projec...

I have an associated activity for opening a type of file, using a file explorer, when selecting the document and that opens with my app, sometimes I receive:    Caused by: java.lang.SecurityException: Permission Denial: reading nextapp.fx.fil...