Code for Android video playback

Local video playback, including play, pause, continue, etc., and show the progress of playback. The effect is as follows:
1.activity_main.xml

<?xml version= "1.0" encoding= "Utf-8"? ><linearlayout xmlns:android= "http://schemas.android.com/apk/res/ Android "xmlns:tools=" Http://schemas.android.com/tools "android:layout_width=" Match_parent "android:layout_height = "Match_parent" android:orientation= "vertical" tools:context= "com.zhang.videoplay.MainActivity" > <linearlay Out android:id= "@+id/line" android:layout_width= "match_parent" android:layout_height= "40DP" an        Droid:layout_margin= "10DP" android:orientation= "horizontal" > <button android:id= "@+id/playstart"        Android:layout_width= "Wrap_content" android:layout_height= "wrap_content" android:gravity= "center" android:text= "Play"/> <button android:id= "@+id/pause" android:layout_width= "Wrap_cont         Ent "android:layout_height=" wrap_content "android:gravity=" center "android:text=" Pause "/> <button anDroid:id= "@+id/rebroadcast" android:layout_width= "wrap_content" android:layout_height= "Wrap_content" android:gravity= "center" android:text= "replay"/> <button android:id= "@+id/plays Top "android:layout_width=" Wrap_content "android:layout_height=" Wrap_content "Android:gra vity= "center" android:text= "Stop"/> </LinearLayout> <surfaceview android:id= "@+id/surfac        Eview "android:layout_width=" 300DP "android:layout_height=" 300DP "android:layout_margin=" 20DP " /> <linearlayout android:layout_width= "match_parent" android:layout_height= "Wrap_content" a ndroid:orientation= "Horizontal" > <textview android:id= "@+id/startime" Android:layout_wi            Dth= "Wrap_content" android:layout_height= "wrap_content" android:layout_marginleft= "10DP" android:gravity= "Center"            android:text= "00:00"/> <seekbar android:id= "@+id/seekbar" Android:layout_ height= "Wrap_content" android:layout_width= "Match_parent" android:layout_weight= "6"/> < TextView android:id= "@+id/sumtime" android:layout_width= "wrap_content" android:layout_height= "Wrap_co    Ntent "android:layout_marginleft=" 10DP "android:gravity=" center "android:text=" Hello "/> </LinearLayout></LinearLayout>

2.mainactivity.java

Package Com.zhang.videoplay;import Android.media.audiomanager;import Android.media.mediaplayer;import Android.media.mediaplayer.oncompletionlistener;import Android.media.mediaplayer.onerrorlistener;import Android.media.mediaplayer.onpreparedlistener;import Android.os.bundle;import Android.support.v7.app.appcompatactivity;import Android.util.log;import Android.view.surfaceholder;import Android.view.surfaceholder.callback;import Android.view.surfaceview;import Android.view.view;import Android.widget.button;import Android.widget.seekbar;import Android.widget.seekbar.onseekbarchangelistener;import Android.widget.textview;import Android.widget.toast;import Java.io.file;import Java.text.SimpleDateFormat;import Java.util.date;public class Mainactivity extends Appcompatactivity implements View.onclicklistener {private Button pla    Start, pause, playstop, rebroadcast;    Private Surfaceview Surfaceview;    Private SeekBar SeekBar;    Private MediaPlayer MediaPlayer; private int Currentposition = 0;    Private Boolean isplaying;    Private TextView Starttime,sumtime;        @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.activity_main);        Initview ();        Add callback Surfaceview.getholder () to Surfaceholder. Addcallback (callback); Set SURFACE not to maintain its own buffer, but wait for the screen's rendering engine to push the content to the interface Surfaceview.getholder (). SetType (Surfaceholder.surface_type_push_        buffers);    Add a progress Change event Seekbar.setonseekbarchangelistener for the progress bar;        } private void Initview () {Plastart = (Button) Findviewbyid (R.id.playstart);        Plastart.setonclicklistener (this);        Pause = (Button) Findviewbyid (r.id.pause);        Pause.setonclicklistener (this);        Playstop = (Button) Findviewbyid (r.id.playstop);        Playstop.setonclicklistener (this);        rebroadcast = (Button) Findviewbyid (r.id.rebroadcast);        Rebroadcast.setonclicklistener (this); Sumtime= (TextView) finDviewbyid (R.id.sumtime);        Starttime= (TextView) Findviewbyid (r.id.startime);        Surfaceview = (Surfaceview) Findviewbyid (R.id.surfaceview);    SeekBar = (SeekBar) Findviewbyid (R.id.seekbar);                } @Override public void OnClick (View v) {switch (V.getid ()) {r.id.playstart://start                Play (0);                Plastart.setenabled (FALSE);            Break                Case r.id.playstop://stopping stop ();            Break                Case r.id.rebroadcast://Replay Replay ();            Break                Case r.id.pause://pauses pause ();        Break }}//Add a Callback object to listen for changes to Surfaceview private Callback Callback = new Callback () {//Surfaceholder when modified Callback @Override public void surfacedestroyed (Surfaceholder holder) {log.i ("info", "Surfaceholder pin            Destruction "); When destroying Surfaceholder, record the current playback position and stop playing if (mediaPlayer! = null && Mediaplayer.isplaying ()) {currentposition = Mediaplayer.getcurrentposition ();            Mediaplayer.stop ();            }}//surfaceview triggered @Override public void surfacecreated (Surfaceholder holder) {            LOG.I ("info", "Surfaceholder is created"); if (currentposition > 0) {//create Surfaceholder, if there is a position last played, play played at the last playback position (CURRENTPO                Sition);            currentposition = 0;  }}//surfaceview triggers @Override public void surfacechanged (surfaceholder holder, int format,        int width, int height) {log.i ("info", "Surfaceholder size Changed");    }    }; Private Onseekbarchangelistener change = new Onseekbarchangelistener () {@Override public void Onstoptrackin Gtouch (SeekBar SeekBar) {/////Get the tick of the current progress bar when the progress bar stops modifying int progress = Seekbar.getprogre            SS ();if (MediaPlayer! = null && mediaplayer.isplaying ()) {//sets the current playing position Mediaplayer.seekt            O (progress); }} @Override public void Onstarttrackingtouch (SeekBar SeekBar) {} @Override PU            Blic void onprogresschanged (SeekBar SeekBar, int progress, Boolean fromuser) {            LOG.I ("info", "onstoptrackingtouch--" +progress);        Shifttime (starttime,progress);    }    }; /** * Start playing * * @param msec Playback Initial position */protected void play (final int msec) {//Get video file address St        Ring Path = "/storage/emulated/0/download/video.mp4";        File File = new file (path);            if (!file.exists ()) {Toast.maketext (this, "Video file path error", Toast.length_long). Show ();        Return            } try {mediaPlayer = new MediaPlayer ();            Mediaplayer.setaudiostreamtype (Audiomanager.stream_music);         Set the video source for playback   LOG.I ("info", "1111111" + File.getabsolutepath ());            Mediaplayer.setdatasource (File.getabsolutepath ());            Set the Surfaceholder of the display video, specify the video output to Surfaceview above Mediaplayer.setdisplay (Surfaceview.getholder ());            LOG.I ("Info", "Start loading");            Mediaplayer.prepareasync (); Mediaplayer.setonpreparedlistener (New Onpreparedlistener () {@Override public void Onprepare                    D (MediaPlayer MP) {log.i ("info", "load Complete");                    Mediaplayer.start ();                    Play Mediaplayer.seekto (msec) in the initial position;                    Set the maximum progress of the progress bar to the maximum playback duration of the video stream Seekbar.setmax (Mediaplayer.getduration ());                    LOG.I ("info", "2222222222-----" +mediaplayer.getduration ());                    Convert scale to TIME Mm:ss Shifttime (Sumtime,mediaplayer.getduration ()); Start thread, update the progress bar's scale new thread () {@OverRide public void Run () {try {isplaying                                = true;                                            while (isplaying) {int current = MediaPlayer                                    . GetCurrentPosition ();                                    Seekbar.setprogress (current);                                Sleep (1000);                            }} catch (Exception e) {e.printstacktrace ();                   }}}.start ();                Set the Stop button to non-clickable playstop.setenabled (false);            }            }); Mediaplayer.setoncompletionlistener (New Oncompletionlistener () {@Override public void oncom             Pletion (MediaPlayer MP) {//callback playstop.setenabled (TRUE) after playback is complete;   }            }); Mediaplayer.setonerrorlistener (New Onerrorlistener () {@Override public boolean onError (Medi                    Aplayer MP, int what, int extra) {//Error replay LOG.I ("info", "OnError---" +what);                    Play (0);                    IsPlaying = false;                return false;        }            });        } catch (Exception e) {e.printstacktrace (); }}/** * re-start playback */protected void Replay () {if (MediaPlayer! = null&& Mediaplayer.isplay            ing ()) {mediaplayer.seekto (0);            Toast.maketext (This, "Replay", Toast.length_long). Show ();            Pause.settext ("pause");        Return        } play (0);    IsPlaying = false;            }/** * Pauses or continues */protected void pause () {if (Pause.gettext (). toString (). Trim (). Equals ("continue")) {            Pause.settext ("pause");            Mediaplayer.start (); ToAst.maketext (This, "continue playing", Toast.length_short). Show ();        Return            } if (MediaPlayer! = null && mediaplayer.isplaying ()) {mediaplayer.pause ();            Pause.settext ("continue");        Toast.maketext (This, "Pause playback", Toast.length_short). Show (); }}/** * Stop playing */protected void Stop () {if (MediaPlayer! = null && mediaplayer.isplaying            ()) {mediaplayer.stop ();            Mediaplayer.release ();            MediaPlayer = null;            Playstop.setenabled (TRUE);        IsPlaying = false;        }}//Convert ticks to time private void Shifttime (TextView view,int times) {Date date = new Date ();        SimpleDateFormat SDF = new SimpleDateFormat ("Mm:ss");        Date.settime (time);        String str = sdf.format (date);        LOG.I ("info", "33333333-----" +str);    View.settext (str); }}

3. Permission to join

<!--write external storage that is SDcard permissions--    <uses-permission android:name= "Android.permission.WRITE_EXTERNAL_STORAGE"/ >    <!--turn off SDcard permissions--    <uses-permission android:name= "android.permission.MOUNT_UNMOUNT_ Filesystems "/>

Code for Android video playback