Note-android open files in various formats (APK, Word, Excel, PPT, PDF, audio and video, pictures, etc.)

Open the suffix. apk file, that is, start the installer;

Apkfilepath file path public void installapk (String apkfilepath) {           //create URI uri uri        = uri.fromfile (new file Apkfilepath));        Intent Intent = new Intent (intent.action_view);        Set the URI and type        intent.setdataandtype (URI, "application/vnd.android.package-archive");        Perform installation        mcontext.startactivity (intent);    }   

/** * Open multiple types of files * @param path file paths * @param type file type */public void OpenText (String path, int type) {Intent Intent =             New Intent (Intent.action_view);             Intent.addcategory (Intent.category_default);             Intent.addflags (Intent.flag_activity_new_task);         Uri uri = uri.fromfile (new File);          Determine the file type if (file_type_ppt = = type) {Intent.setdataandtype (URI, "Application/vnd.ms-powerpoint");             } else if (File_type_word = = TYPE) {intent.setdataandtype (URI, "Application/msword");             } else if (File_type_excel = = TYPE) {intent.setdataandtype (URI, "application/vnd.ms-excel");             } else if (file_type_txt = = TYPE) {intent.setdataandtype (URI, "Text/plain");             } else if (file_type_pdf = = TYPE) {intent.setdataandtype (URI, "application/pdf"); } else if (file_type_html = = TYPE) {Uri Htmluri = uri.parse (path). Buildupon (). encodedauthority ("com. Android.htmlfileprovider "). Scheme (" Content "). Encodedpath (Path). build ();         Intent.setdataandtype (Htmluri, "text/html");        } try {activity.startactivity (intent);        } catch (Exception e) {toast.maketext (Mcontext, "The program that supports this format is not installed in the device", Toast.length_short). Show (); }}

<pre name= "code" class= "Java" >////////open multimedia type Intent.setdataandtype (URI, "audio/*");  Audio Intent.setdataandtype (URI, "video/*");  Video Intent.setdataandtype (URI, "image/*");  Picture Intent.setdataandtype (URI, "Application/x-chm");     Open CHM File

Determines whether the file name is a suffix of some kind private Boolean check (final String name, Final string[] extensions) {for (string end:extensions) {if (Name.tolowercase (). EndsWith (end)) {return true;}} return false;} Set the type   if (check (name, ". apk")) {     file.settype (file_type_apk);    } else  if (check (name, ". PDF ")) {         file.settype (file_type_pdf);    } else if (check (name,             Getstringarray (r.array.ppt_filter))) {         File.settype (file_type_ppt);    } ..... array.ppt_filter:<array name= "Ppt_filter" >        <item>.ppt</item> <------        Item>.pptx</item>    </array>

Get device Storage path (SD card, USB)
Environment.getexternalstoragedirectory ();

Environment.getexternalstoragedirectory (). GetParent ();