Access videos both in internal storage and external SD card - Android -

i've developed simple android app, pull videos path="storage/microsd/videos" , present them in list view, upon selecting video, selected video played. videos located in storage/microsd/videos played. videos in other path not fetched. please give idea, how videos paths(internal storage , external storage). additionally if run same app on different phones, sd card path differs storage/sd card o/videos. question: how can file-object pointing default video-directory of device programmatically?

main activity

    public class mainactivity extends activity {      private listview mlistview;     private list<string> filenamelist;     public  string path="storage/microsd/videos";     private file file;      @override     protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     file = environment.getexternalstoragedirectory();     filenamelist = getfilelistfromsdcard();     final listview listview = (listview) findviewbyid(r.id.list);     arrayadapter<string> adapter1 = new arrayadapter<string> (this,android.r.layout.simple_list_item_1, android.r.id.text1, filenamelist);     listview.setadapter(adapter1);     listview.setonitemclicklistener(new adapterview.onitemclicklistener() {          @override         public void onitemclick(adapterview<?> parent, view view,                                 int position, long id) {             int itemposition = position;             string itemvalue = (string)   listview.getitematposition(position);             intent intent = new intent(mainactivity.this, com.video.videolibrary.selectedvideo.class);             intent.putextra("id", id);             intent.putextra("itemvalue", itemvalue);             intent.putextra("path", path);             startactivity(intent);         }          });      button button = (button) findviewbyid(r.id.btn_online);     // capture button clicks     button.setonclicklistener(new onclicklistener() {         public void onclick(view arg0) {            intent myintent = new intent(mainactivity.this,com.video.videolibrary.selectedvideo.class);             startactivity(myintent);         }     });      }      private list<string> getfilelistfromsdcard() {      file files = new file(path);     filefilter filter = new filefilter() {         private final list<string> exts = arrays.aslist("mp4","mp4");         @override         public boolean accept(file pathname) {             string ext;             string path = pathname.getpath();             ext = path.substring(path.lastindexof(".") + 1);             return exts.contains(ext);         }     };      final file [] filesfound = files.listfiles(filter);     list<string> fllst = new arraylist<string>();     if (filesfound != null && filesfound.length > 0) {         (file file : filesfound) {             fllst.add(file.getname());          }     }     return fllst;     }      } 

selected video class

        public class selectedvideo extends activity {         videoview view;audiomanager audiomanager;         @override         protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.selected_video);         view = (videoview)findviewbyid(r.id.videoview1);        bundle bundle = getintent().getextras();        string path=bundle.getstring("path");        string itemvalue = bundle.getstring("itemvalue");       view.setvideouri(uri.parse(path+"/"+itemvalue ));       videoview videoview = (videoview) findviewbyid(r.id.videoview1);       mediacontroller mediacontroller = new mediacontroller(this);       mediacontroller.setanchorview(videoview);       uri uri = uri.parse(path+"/"+itemvalue);       displaymetrics dm = new displaymetrics();       this.getwindowmanager().getdefaultdisplay().getmetrics(dm);       int height = dm.heightpixels;       int width = dm.widthpixels;      videoview.setminimumwidth(width);      videoview.setminimumheight(height);      videoview.setmediacontroller(mediacontroller);      videoview.setvideouri(uri);      videoview.requestfocus();      audiomanager = (audiomanager)getsystemservice(context.audio_service);      int maxvolume =    audiomanager.getstreammaxvolume(audiomanager.stream_music);      int curvolume = audiomanager.getstreamvolume(audiomanager.stream_music);      seekbar volcontrol = (seekbar)findviewbyid(r.id.volbar);      volcontrol.setmax(maxvolume);      volcontrol.setprogress(curvolume);      volcontrol.setonseekbarchangelistener(new seekbar.onseekbarchangelistener() {          @override         public void onstoptrackingtouch(seekbar arg0) {             // todo auto-generated method stub          }          @override         public void onstarttrackingtouch(seekbar arg0) {             // todo auto-generated method stub          }          @override         public void onprogresschanged(seekbar arg0, int arg1, boolean arg2)    {             // todo auto-generated method stub             audiomanager.setstreamvolume(audiomanager.stream_music, arg1, 0);         }         });          button stopbutton = (button) findviewbyid(r.id.btn_stop);         stopbutton.setonclicklistener(new view.onclicklistener() {         public void onclick(view v) {             view.pause();              }         });          button playbutton = (button) findviewbyid(r.id.btn_play);         playbutton.setonclicklistener(new view.onclicklistener() {         public void onclick(view v) {             bundle bundle = getintent().getextras();             string itemvalue = bundle.getstring("itemvalue");             toast.maketext(getapplicationcontext(),                     itemvalue, toast.length_long)                     .show();             view.start();         }         });          button backbutton = (button) findviewbyid(r.id.btn_back);         backbutton.setonclicklistener(new view.onclicklistener() {             public void onclick(view v) {             view.stopplayback();             startactivity(new intent(selectedvideo.this, mainactivity.class));             }         });          }         @override         public void onconfigurationchanged(configuration newconfig) {         super.onconfigurationchanged(newconfig);     }     } 

android manifest file

        <uses-permission android:name="android.permission.internet"/>         <uses-permission android:name="android.permission.read_external_storage" />         <uses-permission android:name="android.permission.write_external_storage" />         <uses-permission android:name="android.permission.read_external_storage" />         <application         android:allowbackup="true"         android:icon="@mipmap/video_library"         android:label="@string/app_name"         android:theme="@style/apptheme"         android:configchanges="orientation|keyboardhidden">         <activity         android:name="com.video.videolibrary.mainactivity"         android:label="@string/app_name">          <intent-filter>             <action android:name="android.intent.action.main" />              <category android:name="android.intent.category.launcher" />         </intent-filter>         </activity>         <activity         android:name=".selectedvideo">         </activity>         </application>          </manifest> 

first of all: don't hardcode path sdcard. should rather use getexternalstoragedirectory () file-object pointing @ location. variable files should assigned following:

file files= environment.getexternalstoragedirectory(environment.directory_movies); 

as return default location, videos, accessable user stored, 1 should cover needs.

the android api says this:

note: don't confused word "external" here. directory can better thought media/shared storage. filesystem can hold relatively large amount of data , shared across applications (does not enforce permissions). traditionally sd card, may implemented built-in storage in device distinct protected internal storage , can mounted filesystem on computer.

another option use contentprovider. cursor can query 1 , every indexed video. make explicit searching videos unneccessary.

a basic cursor-query this:

cursor cursor=getcontentresolver().query(     mediastore.video.media,              // content uri of table     mprojection,                         // columns return each row     mselectionclause,                    // selection criteria     null,                                // replacing placeholders of selection criterias     msortorder);                         // sort order returned rows      while(cursor.movetonext()){      //work data here     } 

delete line android-manifest.xml, it's unneccessary:

<uses-permission android:name="android.permission.read_external_storage" />