"Android development VR combat" two. Play 360& #176; Panorama video

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"Android development VR combat" two. Play 360° Panorama video

VR is virtual reality reality. Virtual reality technology is a kind of computer simulation system that can create and experience virtual world. It uses computer to generate a simulation environment is a multi-source information Fusion Interactive Three-dimensional dynamic visual and physical behavior of the system simulation to immerse users into the environment.

So, how to develop VR app in Android? We use the Open Source SDK provided by Google to realize the functionality of a 360° panorama video

I. SDK dependencies for the introduction of Google VR in Build.gradle

     ‘com.google.vr:sdk-videowidget:1.10.0‘

Two. Note the minimum supported SDK

  minSdkVersion 19  targetSdkVersion 25

Three. Interface Layout file

<?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:id="@+id/activity_main"    Android:layout_width="Match_parent"    Android:layout_height="Match_parent"    android:orientation="Vertical"    Android:paddingbottom="@dimen/activity_vertical_margin"    Android:paddingleft="@dimen/activity_horizontal_margin"    Android:paddingright="@dimen/activity_horizontal_margin"    Android:paddingtop="@dimen/activity_vertical_margin"    Tools:context="Cn.bluemobi.dylan.vrdevelopvideo.MainActivity">    <TextViewandroid:layout_width="Wrap_content"android:layout_height= "Wrap_content" Android:text="Android Development VR360 Panorama video" />                            <com.google.vr.sdk.widgets.video.VrVideoViewandroid:id="@+id/vr_video_view"  android:layout_width="Match_parent"android:layout_height="250DP" >                        </com.google.vr.sdk.widgets.video.VrVideoView>    <linearlayoutandroid:layout_width="Match_parent"android:layout_height ="Wrap_content"android:orientation="Horizontal">                                <imagebutton  android:id< /span>= "@+id/play_toggle"  android:layout_width= "0DP"  android:layout_height  = "wrap_content"  android:layout_weight  =" 1 " android:background  =" @android: Co Lor/transparent " android:paddingstart  =" 0DP "  android:src  = "@drawable/pause" />         <SeekBar            android:id="@+id/seek_bar"            style="?
Android:attr/progressbarstylehorizontal " Android:layout_width="0DP" Android:layout_height="32DP" Android:layout_weight="8"/> <imagebutton  android:id< /span>= "@+id/volume_toggle"  android:layout_width = "0DP"  android:layout_height  = "wrap_content"  android:layout_weight  =" 1 " android:background  =" @android: Color/transparent " android:paddingstart  =" 0d P " android:paddingtop  =" 4DP " android:src  = "@drawable/volume_on" />  </linearlayout></linearlayout>

Four. Load 360° Panorama video

    /** * Load 360-degree panorama video */    Private void Load360video() {Vr_video_view = (Vrvideoview) Findviewbyid (R.id.vr_video_view);        Seek_bar = (SeekBar) Findviewbyid (R.id.seek_bar);        Volume_toggle = (ImageButton) Findviewbyid (R.id.volume_toggle); Play_toggle = (ImageButton) Findviewbyid (R.id.play_toggle);/** setting load Settings **/Vrvideoview.options Options =NewVrvideoview.options (); Options.inputtype = VrVideoView.Options.TYPE_STEREO_OVER_UNDER;/** * Set Load monitoring * /Vr_video_view.seteventlistener (NewVrvideoeventlistener () {/** * Video playback Complete callback */            @Override             Public void oncompletion() {Super. Oncompletion ();/** after playback, jump to start and play again **/Vr_video_view.seekto (0); Setisplay (false); LOG.D (TAG,"Oncompletion ()"); }/** * Load callback for each frame of video */            @Override             Public void Onnewframe() {Super. Onnewframe (); Seek_bar.setprogress ((int) vr_video_view.getcurrentposition ()); LOG.D (TAG,"Onnewframe ()"); }/** * Click on VR video callback */            @Override             Public void OnClick() {Super. OnClick (); LOG.D (TAG,"OnClick ()"); }/** * Loading VR video failure callback * @param errormessage */            @Override             Public void Onloaderror(String errormessage) {Super. Onloaderror (ErrorMessage); LOG.D (TAG,"Onloaderror ()->errormessage="+ errormessage); }/** * Loading VR Video Success Callback */            @Override             Public void onloadsuccess() {Super. onloadsuccess ();/** Set callback after loading success **/Seek_bar.setmax ((int) vr_video_view.getduration ()); LOG.D (TAG,"Onnewframe ()"); }/** * Display Mode change callback * 1. Default * 2. Full Screen mode * 3.VR viewing mode. Horizontal split Screen mode * @param newDisplayMode mode * /            @Override             Public void ondisplaymodechanged(intNewDisplayMode) {Super. ondisplaymodechanged (NewDisplayMode); LOG.D (TAG,"Onloaderror ()->newdisplaymode="+ NewDisplayMode); }        });Try{/** onboarding VR video **/Vr_video_view.loadvideofromasset ("Congo.mp4", options); }Catch(IOException e)        {E.printstacktrace (); }/** Set the sound button tap Listen **/Volume_toggle.setonclicklistener (NewView.onclicklistener () { Public void OnClick(View v)            {setismuted (!ismuted); }        });/** Set Play pause button tap Listen **/Play_toggle.setonclicklistener (NewView.onclicklistener () { Public void OnClick(View v)            {Setisplay (!isplay); }        });/** Setting progress bar drag monitoring **/Seek_bar.setonseekbarchangelistener (NewSeekbar.onseekbarchangelistener () {/** * Progress bar drag Change listening * @param seekBar Drag Bar * @param Progress Progress * @param Whether the Fromuser is manually operated by the user */            @Override             Public void onprogresschanged(SeekBar SeekBar,intProgressBooleanFromuser) {if(Fromuser) {/** Adjust video progress **/Vr_video_view.seekto (progress); }            }@Override             Public void Onstarttrackingtouch(SeekBar SeekBar) {            }@Override             Public void Onstoptrackingtouch(SeekBar SeekBar)    {            }        }); }/** * Set the sound switch * * @param ismuted Switch */    Private void setismuted(Booleanismuted) { This. ismuted = ismuted; Volume_toggle.setimageresource (ismuted?
 R.drawable.volume_off : R.drawable.volume_on); vr_video_view.setVolume(isMuted ? 0.0f : 1.0f); } /** * 设置播放暂停 * * @param isPlay 播放暂停 */ private void setIsPlay(boolean isPlay) { this.isPlay = isPlay; play_toggle.setImageResource(isPlay ?R.drawable.pause: R.drawable.play ); if(isPlay){ vr_video_view.playVideo(); }else{ vr_video_view.pauseVideo(); } }

Five. GitHub

"Android development VR combat" two. Play 360& #176; Panorama video