android - How to destroy a fragment and then create a new? -

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i have fragment plays videos, start application , goes perfectly, when press button , select video file play, view not play video.

videoactivity

    @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_video);     a=this;     th = thread.currentthread();      // obter url vÍdeo     bundle extras = getintent().getextras();      if (extras != null)         _videourl = extras.getstring("caminho_arquivo");      if (savedinstancestate == null)     {         getfragmentmanager().begintransaction()                 .add(r.id.container, new placeholderfragment()).commit();            } } public static class placeholderfragment extends fragment {     static private final int buffer_size = 700;// mb     static private final int num_files = 20;// count files in cache dir      public placeholderfragment()     {}      @override     public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate)     {         view rootview = inflater.inflate(r.layout.fragment_video, container, false);         frame1 = rootview.findviewbyid(r.id.frame1);         textureview = (videoplayer) rootview.findviewbyid(r.id.textureview1);         textprogress = (textview) rootview.findviewbyid(r.id.textview1);          textureview.setvideopath(_videourl);         textureview.setmediacontroller(new mediac(a, frame1));         textureview.setseeklistener(new videoplayer.seeklistener()         {             @override             public void onseek(int msec)             {                 //if (proxy != null)                 //{                     //proxy.seek = true;                 //} // more speed seeking             }              @override             public void onseekcomplete(mediaplayer mp)             {}         });         textureview                 .setonpreparedlistener(new mediaplayer.onpreparedlistener()                 {                     @override                     public void onprepared(final mediaplayer mp)                     {                         textureview.start();                     }                 });         return rootview;     }

as far can see in code, creating fragment if savedinstancestate null. so, if activity not destroyed, use same fragment.

instead, remove part oncreate() , create fragment in every time navigate videoactivity.


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