Android: display the SD card file list

Read the SD card file information and add it to the listview to display it:

 

Listview obtains the information of the SD FileCode:

List <Map <string, Object> List = new arraylist <Map <string, Object> (); <br/> string sdstatestring = environment. getexternalstoragestate (); <br/> If (sdstatestring. equals (environment. media_mounted) {<br/> try {<br/> file sdfile = environment. getexternalstoragedirectory (); <br/> file sdpath = new file (sdfile. getabsolutepath (); <br/> If (sdpath. listfiles (). length> 0) {<br/> for (File file: sdpath. listfiles () {<br/> Map <string, Object> map = new hashmap <string, Object> (); <br/> map. put ("text_content", file. getname (); // get filename <br/> list. add (MAP); <br/>}< br/>} catch (exception E) {<br/> // <br/>}< br/> return list; 

Draw different images based on filetype: