尚硅谷_楊光福_手機(jī)影音day3

1、321影音講師：光福微博：weibo./321chi navideo22_當(dāng)萬能播放器播放失敗的時候提示用戶&點(diǎn)擊確定的時候退出播放器-111_當(dāng)播放出錯回調(diào)new On ErrorListe ner() videoview.set On ErrorListe ner(Overridepublic boolea n on Error(MediaPlayer mp,int what, int extra) /Toast.makeText(getApplicati onCon text(),"視頻播放出錯",1).show();/1.提示用戶-根本做法/什么情況導(dǎo)致播放

2、失敗/a,播放過程中沒有網(wǎng)絡(luò);-重試/b,播放一個不支持的格式一進(jìn)來就報錯-用萬能播放器/c,下載視頻的時候中間有空白-無法解決new AlertDialog.Builder(VitamioPlayerActivity.this ).setMessage(.setPositiveButt on("播放器不支持該視頻")"確定，new DialogI nteface .On ClickListe ner() public void onClick(DialogInteface dialog,int whichButton) /退出播放器).setCa ncelabl

3、e(.show();fin ish();false )return true)；23_系統(tǒng)播放器和萬能播放器手動切換相關(guān)處理-291_系統(tǒng)播放器和萬能播放器手動切換case R.id. btn switchnew AlertDialog.Builder(VideoPlayerActivity.this ).setMessage( .setNegativeButt on( .setPositiveButt on(int whichButton) )"當(dāng)前是系統(tǒng)播放器，是否要切換萬能播放器播放"下次再說",null )"立刻切換，new DialogI nt

4、eface .On ClickListe ner() public voidon Click(Dialog In terface dialog,/退出播放器startVitamioPlyer();")/*.setCa ncelable(.show();break ;false )*設(shè)置標(biāo)題和播放數(shù)據(jù)*/private void setData() if (videoLists != null&& videoLists .size()>0)Videoitem videoItem=videoLists .get( curre ntPositi on；tv_video

5、 _n ame .setText(videoltem.getTitle();isNetUri = utils.isNetUri(Uri.parse (videoitem.getData();videoview .setVideoPath(videoltem.getData();else if ( uri != null )isNetUri = utils.isNetUri(uri); videoview .setVideoURI(uri );tv_video_name .setText(uri +"");2_支持播放網(wǎng)絡(luò)視頻有緩沖效果*/判斷是否是網(wǎng)絡(luò)資源param uri

6、returnpublicboolea n isNetUri(Uri uri) boolean result = false ; if (uri != null ) if (uri.toString().contains(| uri.toStri ng().c ontains( | uri.toStri ng().c ontains( result =true ; else result =false ;return result;" ")"RTSP")"MMS") 在 handler 中if (isNetUri )/設(shè)置緩存-針對的網(wǎng)

7、絡(luò)視頻/設(shè)置緩中進(jìn)度-到那個等分int buffer = videoview .getBufferPerce ntage();0100;/要緩沖多少int totalBuffer = buffer *video_seekBar .getMax();/得到緩存的進(jìn)度int sec on daryProgress = totalBuffer / 100;video_seekBarelse .setSecondaryProgress(secondaryProgress);video_seekBar .setSecondaryProgress(0);3_屏蔽系統(tǒng)播放器和 Vitamio 播放器切換的動

8、畫res/anim 目錄下<?xml version ="1.0" encoding ="utf-8" ?><translate xmlns:android ="schemas.android./apk/res/android" android:toXDelta ="0" android:fromYDelta ="0" android:duration ="500" android:toYDelta ="0" android:fromXD

9、elta ="0" ></ translate >4_播放器釋放資源在 handler 中case FINISH :if ( videoview != null ) videoview .stopPlayback();finish(); / 關(guān)閉播放器 break ;04_音樂播放器public class AudioListActivityexte nds BaseActivity private ArrayList<Audioltem>audioListsprivateListViewlv_audio_listprivateTextView

10、tv_no audioprivate Utils utils ;privateHan dlerhan dler = new Han dler()publicvoid han dleMessage(a ndroid.os.Message msg) lv_audio_list if ( audioLists tv_no audio else tv_no audio.setAdapter( new VideoListAdapter(); != null &&audioLists.size()>0).setVisibility(View.GONE;.setVisibility(V

11、iew.VISIBLE );Overrideprotected void onCreate(Bundle savedInstanceState) super .onCreate(savedInstanceState);setTitle( "本地音樂)；setRightButto n( View.GONEutils = new Utils();lv_audio_list = (ListView) fin dViewByld(R.id.lv_audio_list );tv_n oaudio= (TextView) fin dViewByld(R.id.tv_n oaudio );/得到

12、的視頻getVideData();lv_audioist.setO nl temClickListe ner(new On ItemClickListe ner() Overridepublic void on ltemClick(AdapterView<?> pare nt. View view,int position, long id) /點(diǎn)擊的時候只傳播放地址Audioltem videoltem =audioLists .get(positi on);String path = videoItem.getData();In te nt in te nt =new Inte

13、n t(l ntent.ACTION_VIEW);intent.setDataAndType(Uri.parse (path), "audio/*");startActivity(i nte nt););private class VideoListAdapterexte nds BaseAdapterOverridepublic int getCo un t() retur n audioLists .size();Overridepublic View getView( int positi on.View con vertView,ViewGroup pare nt)

14、II把布局文件->View 對象View view;ViewHolder holder;if (convertView != null )view = con vertView;holder = (ViewHolder) view.getTag(); else view = View. in flate (AudioListActivity.this ,R.l ayout.videolist_itemholder = holder. view.fi ndViewById(R.id. holder. view.fi ndViewByld(R.id. holder. view.fi ndVi

15、ewByld(R.id. holder. view.fi ndViewByld(R.id.,null );new ViewHolder();iv_ic on= (ImageView)iv_ic on );tv_n ame = (TextView) tv_name );tv_durati on= (TextView)tv_durati on );tv_size = (TextView) tv_size );view.setTag(holder); II把對應(yīng)的關(guān)系保存起來 II得到具體的某一條視頻的信息holder. iv_ic on .setlmageResource(R.drawable.m

16、usic_default_bg );AudioItem videoltem =audioLists .get(positi on);holder.tv_name .setText(videoItem.getTitle();/ 把毫秒轉(zhuǎn)換成： 1:20:30 這里形式String tiemStr = videoItem.getDuration();if (tiemStr != null )String timeStr =utils .stringForTime(Integer. parseInt (tiemStr); holder. tv_duration .setText(timeStr);S

17、tring sizeStr =Formatter. formatFileSize (AudioListActivity. this Long. parseLong (videoItem.getSize();holder. tv_size .setText(sizeStr);return view;Overridepublic Object getItem( int position) / TODOAuto-generated method stub return null ;Overridepublic long getItemId( int position) / TODOAuto-gene

18、rated method stub return 0;/ 容器static class ViewHolderImageView iv_icon ;TextView tv_name ;TextView tv_duration ;TextView tv_size ;/* 得到 里面的視頻 媒體掃描器*/private void getVideData() audioLists = new ArrayList<AudioItem>();/在子線程去得到視頻new Thread。public void run() /查找視頻的路徑Uri uri = MediaStore.Audio.Med

19、ia.Strin g project ion = MediaStore.Audio.Media.MediaStore.Audio.Media.MediaStore.Audio.Media.MediaStore.Audio.Media.Cursor cursor = getC onten tResolver().query(uri,EXTERNAL_CONTENT_URIDISPLAY_NAMEDURATION) SIZE, DATA;projecti on.null , null , null );while (cursor.moveToNext()Stri ng duration = cur

20、sor.getStri ng(1);視頻總時長int length = Integer.valueOf (duration);if (length > 1000*10)AudioItem videoItem =new AudioItem();String title = cursor.getString(0);/ 標(biāo)題絕對路徑videoItem.setDurati on( durati on);String size = cursor.getStri ng(2);videoItem.setSize(size);String data = cursor.getStri ng(3);/視頻文

21、件大小/視頻在sdcard 的videoItem.setData(data); audioLists .add(videoItem);videoItem.setTitle(title); cursor.close();handler .sendEmptyMessage(O);.start();Overridepublic View getC onten tView() View view = View.in flate(AudioListActivity.thisR.layout. activity_audiolist , null ); return view;Override public

22、 void clickRightButton() Overridepublic void clickLeftButton() / 退出頁面 finish();02_ 音樂播放器頁面 -動畫列表<?xml version ="1.0" encoding<animation-list xmlns:android android:oneshot ="false"="utf-8" ?>="schemas.android./apk/res/android"><itemandroid:drawab

23、le android:duration<item android:drawable android:duration<item android:drawable android:duration<item android:drawable android:duration<item android:drawable android:duration<item android:drawable android:duration="drawable/now_playing_matrix_01"="150" />="

24、;drawable/now_playing_matrix_02"="150" />="drawable/now_playing_matrix_03"="150" />="drawable/now_playing_matrix_04"="150" />="drawable/now_playing_matrix_05"="150" />="drawable/now_playing_matrix_06"=&q

25、uot;150" /><iteman droid:drawable= "drawable/no w_play in g_matrix_07"an droid:durati on= "150" />an droid:drawable= "drawable/no w_play in g_matrix_08"an droid:durati on= "150" /><iteman droid:drawable= "drawable/no w_play in g_matrix

26、_09"an droid:durati on= "150" /><item</ animation-list >播放動畫rocketImage = (ImageView) fin dViewByld(R.id.rocketlmage.setBackgro un dResource(R.drawable.iv_ic on);ani matio nist);rocketAnimation= (Animation Drawable)rocketA ni mati on.start();rocketimage.getBackgro un d();0

27、3播放頁面的完成-40<?xml version ="1.0"encoding ="utf-8"?>xmln s:a ndroid="schemas.a ndroid./apk/res/a ndroid"= "match_pare nt"="match_pare nt"="drawable/base_bg"vRelativeLayoutan droid:layout_width an droid:layout_height an droid:backgro und

28、vRelativeLayoutan droid:layout_widthan droid:layout_height="match_pare nt"="wrap_c on te nt">vlmageViewicon"an droid:id ="+id/ivan droid:layout_width="wrap_c ontent"an droid:layout_height="wrap_c onten t"an droid:layout_ce nterHorizo ntal="tr

29、ue"/>an droid:backgro und="drawable/a ni matio n_l ist"<TextViewan droid:id ="+id/tv_artist"an droid:layout_width ="wrap_c ontent"an droid:layout_height="wrap_c onten t"an droid:layout_ce nterHorizo ntal="true"an droid:layout_margi nTop =&

30、quot;40dip"an droid:text ="演唱者an droid:textColor ="#ffffff"an droid:textSize ="16sp"/><TextViewan droid:id="+id/tv_ name"an droid:layout_width="wrap_c ontent"an droid:layout_height="wrap_c onten t"an droid:layout_ce nterHorizo ntal=&q

31、uot;true"an droid:layout_marg in Top="60dip"android:text ="歌曲名稱an droid:textColor="#ffffff"an droid:textSize ="18sp"/></ RelativeLayout ><Lin earLayout="match_pare nt"="wrap_c ontent"an droid:layout_widthan droid:layout_heightan

32、 droid:layout_alig nPare ntBottom="true"an droid:orie ntatio n="vertical" >="wrap_c onten t" ="wrap_c on te nt" ="right"<TextViewan droid:id ="+id/tv_time" an droid:layout_width an droid:layout_height an droid:layout_gravityan droid:l

33、ayout_marg in Right="10dip" an droid:text 三"20:11.22"an droid:textColor ="#ffffff"an droid:textSize= "18sp"/><SeekBar="match_pare nt"="wrap_c on te nt"an droid:id ="+id/audio_seekBar" an droid:layout_width an droid:layout_he

34、ight an droid:max ="100"an droid:maxHeight="5dip"android:progress ="10"android:progressDrawable= "drawable/music_progress_horizontal" android:thumb= "drawable/seek_thumb " />="match_parent" ="wrap_content" ="horizontal&quo

35、t; ><LinearLayout android:layout_width android:layout_height android:orientation <Button="10dip"android:layout_marginBottomandroid:id= "+id/btn_shuffle""drawable/btn_shuffle_order_selector"android:background=android:layout_widthandroid:layout_height <Button=

36、"wrap_content"="wrap_content" />android:layout_marginBottom android:id ="+id/btn_pre" android:background= android:layout_width android:layout_height <Button="10dip""drawable/btn_pre_audio_selector"="wrap_content"="wrap_content&qu

37、ot; />android:layout_marginBottom ="10dip" android:id ="+id/btn_play_pause"="drawable/btn_pause_audio_selector"="wrap_content"="wrap_content" />android:backgroundandroid:layout_widthandroid:layout_height <Buttonandroid:layout_marginBottomand

38、roid:id ="+id/btn_next"="10dip"android:backgroundandroid:layout_width android:layout_height <Button="drawable/btn_next_audio_selector"="wrap_content"="wrap_content" />="10dip"android:layout_marginBottomandroid:id ="+id/btn_lyric&

39、quot;="drawable/btn_lyric_selector" ="wrap_content" ="wrap_content" />android:backgroundandroid:layout_width android:layout_height </ LinearLayout ></ LinearLayout</ RelativeLayout04_ 創(chuàng)立效勞 MusicPlayerService& 和創(chuàng)立對應(yīng)的 aidl 文件IMusicPlayerService.aidl-501

40、_回憶效勞調(diào)用的過程，基于此類改成2_ 創(chuàng) 建 服 務(wù) MusicPlayerService.javaIMusicPlayerService.aidl, 名字一定要改extends Service public class MusicPlayerServiceOverride public void onCreate() super .onCreate();/* 根據(jù)位置翻開一個音頻并且播放* param position*/public void openAudio( int position) * 開始播放音頻*/public void start() /*/public void pau

41、se() * 停止*/public void stop() * 得到歌曲的名稱*/public String getAudioName() return "" ;* 得到歌曲演唱者的名字*/public String getArtistName() return "" ;* 得到歌曲的當(dāng)前播放進(jìn)度*/public int getCurrentPosition() return 0;* 得到歌曲的當(dāng)前總進(jìn)度*/public int getDuration() return 0;/* * 播放下一首歌曲*/public void next() /* 播放上一

42、首歌曲*/public void pre() * 得到播放模式*/public int getPlayMode() return 0;* 設(shè)置播放模式*/public void setPlayMode( int mode) Overridepublic IBinder onBind(Intent intent) return stub ;IMusicPlayerService.Stubstub= new IMusicPlayerService.Stub() MusicPlayerServiceservice= MusicPlayerService.this ;Overridepublic vo

43、idstop()throwsRemoteException service.stop();Overridepublic voidstart()throwsRemoteException service.start();Overridepublic void setPlayMode( int mode) throws RemoteException service .setPlayMode(mode);Overridepublic void pre() throws RemoteException service .pre();Overridepublic void pause() throws

44、 RemoteException service .pause();Overridepublic void openAudio( int position) throws RemoteException service .openAudio(position);Overridepublic void next() throws RemoteException service .next();Overridepublic int getPlayMode() throws RemoteException / TODOAuto-generated method stub return service

45、 .getPlayMode();Overridepublic int getDuration() throws RemoteException / TODOAuto-generated method stub return service .getDuration();Overridepublic int getCurre ntPositi on()throws RemoteExcepti on / TODOAuto-ge nerated method stub retur n service .getCurre ntPositi on();Overridepublic Stri ng get

46、AudioName()throws RemoteExcepti on / TODOAuto-ge nerated method stub return service .getAudioName();Overridepublic Stri ng getArtistName()throws RemoteExcepti on / TODOAuto-ge nerated method stub return service .getArtistName();3_把方法體去掉package .atguigu.mobileplayer.audio;in terface IMusicPlayerServi

47、ce *根據(jù)位置翻開一個音頻并且播放* param positi on*/ void ope nAudio(i nt position);r暫停 */ void pause();*開始播放音頻*/void start();*/void stop();l播放下一首歌曲*/void n ext();r*播放上一首歌曲*/void pre();r*得到播放模式*/int getPlavModeO; *設(shè)置播放模式*/void setPlayMode(i nt mode*得到歌曲的名稱*/Stri ng getAudioName();*得到歌曲演唱者的名字*/String getArtistName(

48、);/*得到歌曲的當(dāng)前播放進(jìn)度*/int getCurre ntPositi on();*得到歌曲的當(dāng)前總進(jìn)度*/int getDurati on();05_實(shí)現(xiàn)播放一個音樂文件并且設(shè)置暫停和播放按鈕狀態(tài)-161_效勞中加載音頻Overridepublic void on Create。 super .onCreate。； getAudioData();*得到 里面的視頻媒體掃描器*/private void getAudioData() audioLists = new ArrayList<Audioltem>(); /在子線程去得到視頻new Thread() public v

49、oid run() /查找視頻的路徑Uri uri = MediaStore.Audio.Media. Strin g project ion = MediaStore.Audio.Media.DISPLAY_NA MEMediaStore.Audio.Media.MediaStore.Audio.Media.MediaStore.Audio.Media.EXTERNAL_CONTENT_URIDURATION)SIZE,DATA;projecti on,/視頻總時長Cursor cursor = getC onten tResolver().query(uri, null , null ,

50、null );while (cursor.moveToNext() String duration = cursor.getString(1);int length = Integer.valueOf (duration);if (length > 1000 * 10) AudioItem videoItem =new AudioItem();Stri ng title = cursor.getStri ng(0);/ 標(biāo)題videoItem.setTitle(title);videoItem.setDurati on( durati on);/視頻文件大小String size = c

51、ursor.getString(1);videoItem.setSize(size);的絕對路徑videoItem.setData(data); audioLists .add(videoItem);cursor.close();；.start();/* *根據(jù)位置翻開一個音頻并且播放* param position*/publicvoid openAudio(int position) tryif (mediaPlayer!= null ) mediaPlayer.reset();mediaPlayer=null ;mediaPlayer = new MediaPlayer();if ( a

52、udioLists != null ) curre ntAudioltem = audioLists.get(positi on);mediaPlayer .setDataSource(curre ntAudioltem.getData();mediaPlayer.set On PreparedListe ner(mOn PreparedListe ner);mediaPlayer.set On Completio nListe ner(mOn Completi on Liste ner);mediaPlayer.set On ErrorListe ner(mOn ErrorListe ner

53、);mediaPlayer.prepareAs yn c(); catch (Exception e) / TODOAuto-ge nerated catch blocke.pri ntStackTrace();private OnPreparedListener mOnPreparedListener = new OnPreparedListener() Overridepublic void onPrepared(MediaPlayer mp) start();private OnCompletionListener mOnCompletionListener = new OnComple

54、tionListener() Overridepublic void onCompletion(MediaPlayer mp) next();private OnErrorListener mOnErrorListener = new OnErrorListener() Overridepublic boolean onError(MediaPlayer mp, int what, int extra) / TODOAuto-generated method stub return false ;開始播放音頻*/public void start() mediaPlayer .start();

55、2_當(dāng)啟動播放器頁面時候綁定效勞/*啟動效勞 */ private void startService() Intent intent =new Inten t();inten t.setAct ion(".atguigu.mobileplayer.musicplayerservice");bin dService(i ntent, conn. Con text.BIND_AUTO_CREATE；startService(i nten t);功能清單文件要配置<servicean droid: name =".atguigu.mobileplayer.aud

56、io.MusicPlayerService"<i nte nt-filter><act ion/>an droid:n ame= ".atguigu.mobileplayer.musicplayerservice"</ intent-filter></ service >private ServiceC onnectionconn = new ServiceC onnection() Overridepublic void on ServiceDisc onn ected(Comp onen tName n ame)

57、 try if (service != null )service .stop();service = n ull ; catch (RemoteException e) / TODOAuto-ge nerated catch blocke.pri ntStackTrace();Overridepublic void on ServiceC onn ected(Comp onen tNamename, IBinderiBi nder)service = IMusicPlayerService.Stub.asln terface(iB in der);try if (service !=null )service.ope nAudio(curre ntPositi on); catch (RemoteException e) / TODOAuto-generated catch block e.printStackTrace(); ;3_根據(jù)得到的播放位置，播放具體位置的音頻* 得到播放列表傳入的數(shù)據(jù)*/ private void getData() currentPosition = getIntent().getIntExtra("currentPosition&qu