android - unable to get webview to show video fullscreen -

i have created android application preview website has mp4 video player, works fine im unable preview on full screen when click on video enlarge icon. please note im new , been learning 3 days code mainactivity.java:

import android.app.activity; import android.content.intent; import android.net.uri; import android.os.build; import android.os.environment; import android.os.parcelable; import android.provider.mediastore; import android.os.bundle; import android.support.v7.app.appcompatactivity; import android.util.log; import android.webkit.valuecallback; import android.webkit.webchromeclient; import android.webkit.webview; import android.widget.progressbar; import android.widget.toast; import java.io.file; import java.io.ioexception;  public class mainactivity extends appcompatactivity {     private webview webview;     private progressbar progressbar;  // variables camera , choosing files methods private static final int filechooser_resultcode = 1; private valuecallback<uri> muploadmessage; private uri mcapturedimageuri = null;  // same android 5.0 methods private valuecallback<uri[]> mfilepathcallback; private string mcameraphotopath;  // error handling private static final string tag = mainactivity.class.getsimplename();  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);      // define url open in webview     string webviewurl = "http://test.com";      // webview code without handling external links     webview = (webview) findviewbyid(r.id.activity_main_webview);     webview.getsettings().setjavascriptenabled(true);     progressbar = (progressbar) findviewbyid(r.id.progressbar);      //webview.getsettings().setusewideviewport(true);     //webview.getsettings().setloadwithoverviewmode(true);     webview.getsettings().setallowfileaccess(true);      // load url in webview     webview.loadurl(webviewurl);     webview.setwebviewclient(new myappwebviewclient());      // implement webchromeclient inner class     // define openfilechooser select file camera     webview.setwebchromeclient(new webchromeclient() {          // page loading progress, gone when loaded         public void onprogresschanged(webview view, int progress) {             if (progress < 100 && progressbar.getvisibility() == progressbar.gone) {                 progressbar.setvisibility(progressbar.visible);             }             progressbar.setprogress(progress);             if (progress == 100) {                 progressbar.setvisibility(progressbar.gone);             }         }          // lollipop, in 1         public boolean onshowfilechooser(                 webview webview, valuecallback<uri[]> filepathcallback,                 webchromeclient.filechooserparams filechooserparams) {             if (mfilepathcallback != null) {                 mfilepathcallback.onreceivevalue(null);             }             mfilepathcallback = filepathcallback;              intent takepictureintent = new intent(mediastore.action_image_capture);             if (takepictureintent.resolveactivity(getpackagemanager()) != null) {                  // create file photo should go                 file photofile = null;                 try {                     photofile = createimagefile();                     takepictureintent.putextra("photopath", mcameraphotopath);                 } catch (ioexception ex) {                     // error occurred while creating file                     log.e(tag, "unable create image file", ex);                 }                  // continue if file created                 if (photofile != null) {                     mcameraphotopath = "file:" + photofile.getabsolutepath();                     takepictureintent.putextra(mediastore.extra_output,                             uri.fromfile(photofile));                 } else {                     takepictureintent = null;                 }             }              intent contentselectionintent = new intent(intent.action_get_content);             contentselectionintent.addcategory(intent.category_openable);             contentselectionintent.settype("image/*");              intent[] intentarray;             if (takepictureintent != null) {                 intentarray = new intent[]{takepictureintent};             } else {                 intentarray = new intent[0];             }              intent chooserintent = new intent(intent.action_chooser);             chooserintent.putextra(intent.extra_intent, contentselectionintent);             chooserintent.putextra(intent.extra_title, getstring(r.string.image_chooser));             chooserintent.putextra(intent.extra_initial_intents, intentarray);             startactivityforresult(chooserintent, filechooser_resultcode);              return true;         }          // creating image files (lollipop only)         private file createimagefile() throws ioexception {              file imagestoragedir = new file(environment.getexternalstoragepublicdirectory(environment.directory_pictures), "directorynamehere");              if (!imagestoragedir.exists()) {                 imagestoragedir.mkdirs();             }              // create image file name             imagestoragedir  = new file(imagestoragedir + file.separator + "img_" + string.valueof(system.currenttimemillis()) + ".jpg");             return imagestoragedir;         }          // openfilechooser android 3.0+         public void openfilechooser(valuecallback<uri> uploadmsg, string accepttype) {             muploadmessage = uploadmsg;              try {                 file imagestoragedir = new file(environment.getexternalstoragepublicdirectory(environment.directory_pictures), "directorynamehere");                  if (!imagestoragedir.exists()) {                     imagestoragedir.mkdirs();                 }                  file file = new file(imagestoragedir + file.separator + "img_" + string.valueof(system.currenttimemillis()) + ".jpg");                  mcapturedimageuri = uri.fromfile(file); // save private variable                  final intent captureintent = new intent(android.provider.mediastore.action_image_capture);                 captureintent.putextra(mediastore.extra_output, mcapturedimageuri);                 // captureintent.putextra(mediastore.extra_screen_orientation, activityinfo.screen_orientation_portrait);                  intent = new intent(intent.action_get_content);                 i.addcategory(intent.category_openable);                 i.settype("image/*");                  intent chooserintent = intent.createchooser(i, getstring(r.string.image_chooser));                 chooserintent.putextra(intent.extra_initial_intents, new parcelable[]{captureintent});                  startactivityforresult(chooserintent, filechooser_resultcode);             } catch (exception e) {                 toast.maketext(getbasecontext(), "camera exception:" + e, toast.length_long).show();             }          }          // openfilechooser android < 3.0         public void openfilechooser(valuecallback<uri> uploadmsg) {             openfilechooser(uploadmsg, "");         }          // openfilechooser other android versions         /* may not work on kitkat due lack of implementation of openfilechooser() or onshowfilechooser()            https://code.google.com/p/android/issues/detail?id=62220            newer versions of kitkat fixed on devices */         public void openfilechooser(valuecallback<uri> uploadmsg, string accepttype, string capture) {             openfilechooser(uploadmsg, accepttype);         }      });  }  // return here when file selected camera or sd card @override public void onactivityresult (int requestcode, int resultcode, intent data) {      // code versions except of lollipop     if (build.version.sdk_int < build.version_codes.lollipop) {          if(requestcode==filechooser_resultcode) {             if (null == this.muploadmessage) {                 return;             }              uri result=null;              try{                 if (resultcode != result_ok) {                     result = null;                 } else {                     // retrieve private variable if intent null                     result = data == null ? mcapturedimageuri : data.getdata();                 }             }             catch(exception e) {                 toast.maketext(getapplicationcontext(), "activity :"+e, toast.length_long).show();             }              muploadmessage.onreceivevalue(result);             muploadmessage = null;         }      } // end of code versions except of lollipop      // start of code lollipop     if (build.version.sdk_int >= build.version_codes.lollipop) {          if (requestcode != filechooser_resultcode || mfilepathcallback == null) {             super.onactivityresult(requestcode, resultcode, data);             return;         }          uri[] results = null;          // check response 1         if (resultcode == activity.result_ok) {             if (data == null || data.getdata() == null) {                 // if there not data, may have taken photo                 if (mcameraphotopath != null) {                     results = new uri[]{uri.parse(mcameraphotopath)};                 }             } else {                 string datastring = data.getdatastring();                 if (datastring != null) {                     results = new uri[]{uri.parse(datastring)};                 }             }         }          mfilepathcallback.onreceivevalue(results);         mfilepathcallback = null;      } // end of code lollipop  }  // handling button @override public void onbackpressed() {     if(webview.cangoback()) {         webview.goback();     } else {         super.onbackpressed();     } } } 

and activity_main.xml:

<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.coordinatorlayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:fitssystemwindows="true"     tools:context="com.test.app.mainactivity">     <linearlayout         xmlns:android="http://schemas.android.com/apk/res/android"         android:id="@+id/content_main"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:orientation="vertical">          <progressbar             style="?android:attr/progressbarstylehorizontal"             android:id="@+id/progressbar"             android:layout_width="match_parent"             android:layout_height="wrap_content"/>          <webview             android:id="@+id/webview1"             android:layout_width="match_parent"             android:layout_height="match_parent"/>      </linearlayout>     <android.support.design.widget.appbarlayout         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:theme="@style/apptheme.appbaroverlay">      </android.support.design.widget.appbarlayout>      <include layout="@layout/content_main" />  </android.support.design.widget.coordinatorlayout> 

how continue code video full screen support

thank in advance

try this:-

in manifest file

 <activity             android:name="your activity"             android:configchanges="keyboardhidden|orientation|screensize"             android:theme="@android:style/theme.holo.noactionbar.fullscreen" />