尚硅谷杨光福手机影音day

1、321影音 讲师：杨光福 微博：22_当万能播放器播放失败的时候提示用户&点击确定的时候退出播放器-111_当播放出错回调videoview.setOnErrorListener(new OnErrorListener() Overridepublic boolean onError(MediaPlayer mp, int what, int extra) /Toast.makeText(getApplicationContext(), "视频播放出错", 1).show();/1.提示用户-基本做法/什么情况导致播放失败/a,播放过程中没有网络;-重试/b,播放一

2、个不支持的格式（一进来就报错）-用万能播放器/c,下载视频的时候中间有空白-无法解决 new AlertDialog.Builder(VitamioPlayerActivity.this) .setMessage("播放器不支持该视频") .setPositiveButton("确定", new DialogInterface.OnClickListener() public void onClick(DialogInterface dialog, int whichButton) /退出播放器 finish(); ) .setCancelable(fa

3、lse) .show();return true;);23_系统播放器和万能播放器手动切换相关处理-291_系统播放器和万能播放器手动切换case R.id.btn_switch: new AlertDialog.Builder(VideoPlayerActivity.this) .setMessage("当前是系统播放器，是否要切换万能播放器播放") .setNegativeButton("下次再说", null) .setPositiveButton("立刻切换", new DialogInterface.OnClickListe

4、ner() public void onClick(DialogInterface dialog, int whichButton) /退出播放器 startVitamioPlyer(); ) .setCancelable(false) .show();break;/* * 设置标题和播放数据 */private void setData() if(videoLists !=null &&videoLists.size()>0)VideoItem videoItem= videoLists.get(currentPosition);tv_video_name.setTex

5、t(videoItem.getTitle();isNetUri = utils.isNetUri(Uri.parse(videoItem.getData();videoview.setVideoPath(videoItem.getData();elseif(uri!=null)isNetUri = utils.isNetUri(uri);videoview.setVideoURI(uri);tv_video_name.setText(uri+"");.2_支持播放网络视频有缓冲效果/* * 判断是否是网络资源 * param uri * return */public bo

6、olean isNetUri(Uri uri) boolean result = false;if (uri != null) if (uri.toString().contains("http")| uri.toString().contains("RTSP")| uri.toString().contains("MMS") result = true; else result = false;return result; 在handler中if(isNetUri)/设置缓存-针对的网络视频/设置缓中进度-到那个等分int buff

7、er = videoview.getBufferPercentage();/0100;/要缓冲多少int totalBuffer = buffer * video_seekBar.getMax();/得到缓存的进度 int secondaryProgress = totalBuffer / 100; video_seekBar.setSecondaryProgress(secondaryProgress);elsevideo_seekBar.setSecondaryProgress(0);3_屏蔽系统播放器和Vitamio播放器切换的动画res/anim 目录下<?xml version

8、="1.0" encoding="utf-8"?><translate xmlns:android=" android:toXDelta="0" android:fromYDelta="0" android:duration="500" android:toYDelta="0" android:fromXDelta="0" ></translate>4_播放器释放资源在handler中 case FINISH:if(

9、videoview != null)videoview.stopPlayback();finish();/关闭播放器break;04_音乐播放器01_基于视频列表修改成音乐列表-28 public class AudioListActivity extends BaseActivity private ArrayList<AudioItem> audioLists;private ListView lv_audio_list;private TextView tv_noaudio;private Utils utils;private Handler handler = new H

10、andler()public void handleMessage(android.os.Message msg) lv_audio_list.setAdapter(new VideoListAdapter();if(audioLists!=null&&audioLists.size()>0)tv_noaudio.setVisibility(View.GONE);elsetv_noaudio.setVisibility(View.VISIBLE);Overrideprotected void onCreate(Bundle savedInstanceState) supe

11、r.onCreate(savedInstanceState);setTitle("本地音乐");setRightButton(View.GONE);utils = new Utils();lv_audio_list = (ListView) findViewById(R.id.lv_audio_list);tv_noaudio = (TextView) findViewById(R.id.tv_noaudio);/ 得到手机的视频getVideData();lv_audio_list.setOnItemClickListener(new OnItemClickListene

12、r() Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) /点击的时候只传播放地址AudioItem videoItem = audioLists.get(position);String path = videoItem.getData(); Intent intent = new Intent(Intent.ACTION_VIEW);intent.setDataAndType(Uri.parse(path), "audio/*");

13、startActivity(intent););private class VideoListAdapter extends BaseAdapterOverridepublic int getCount() return audioLists.size();Overridepublic View getView(int position, View convertView, ViewGroup parent) /把布局文件->View对象View view;ViewHolder holder;if(convertView != null)view = convertView;holder

14、 = (ViewHolder) view.getTag();elseview = View.inflate(AudioListActivity.this, R.layout.videolist_item, null);holder = new ViewHolder();holder.iv_icon = (ImageView) view.findViewById(R.id.iv_icon);holder.tv_name = (TextView) view.findViewById(R.id.tv_name);holder.tv_duration = (TextView) view.findVie

15、wById(R.id.tv_duration);holder.tv_size = (TextView) view.findViewById(R.id.tv_size);view.setTag(holder);/把对应的关系保存起来/得到具体的某一条视频的信息holder.iv_icon.setImageResource(R.drawable.music_default_bg);AudioItem videoItem = audioLists.get(position);holder.tv_name.setText(videoItem.getTitle();/把毫秒转换成：1:20:30这里形式

16、String tiemStr = videoItem.getDuration();if(tiemStr != null)String timeStr = utils.stringForTime(Integer.parseInt(tiemStr);holder.tv_duration.setText(timeStr);String sizeStr = Formatter.formatFileSize(AudioListActivity.this, Long.parseLong(videoItem.getSize();holder.tv_size.setText(sizeStr);return v

17、iew;Overridepublic Object getItem(int position) / TODO Auto-generated method stubreturn null;Overridepublic long getItemId(int position) / TODO Auto-generated method stubreturn 0;/容器static class ViewHolderImageView iv_icon;TextView tv_name;TextView tv_duration;TextView tv_size;/* * 得到手机里面的视频 媒体扫描器 *

18、/private void getVideData() audioLists = new ArrayList<AudioItem>();/ 在子线程去得到视频new Thread() public void run() / 查找视频的路径Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;String projection = MediaStore.Audio.Media.DISPLAY_NAME,MediaStore.Audio.Media.DURATION,MediaStore.Audio.Media.SIZE,Media

19、Store.Audio.Media.DATA ;Cursor cursor = getContentResolver().query(uri, projection,null, null, null);while(cursor.moveToNext()String duration = cursor.getString(1);/视频总时长int length = Integer.valueOf(duration);if(length > 1000*10)AudioItem videoItem = new AudioItem();String title = cursor.getStrin

20、g(0);/标题videoItem.setTitle(title);videoItem.setDuration(duration);String size = cursor.getString(2);/视频文件大小videoItem.setSize(size);String data = cursor.getString(3);/视频在sdcard的绝对路径videoItem.setData(data);audioLists.add(videoItem);cursor.close();handler.sendEmptyMessage(0);.start();Overridepublic Vie

21、w getContentView() View view = View.inflate(AudioListActivity.this,R.layout.activity_audiolist, null);return view;Overridepublic void clickRightButton() Overridepublic void clickLeftButton() / 退出页面finish();02_音乐播放器页面-动画列表<?xml version="1.0" encoding="utf-8"?><animation-l

22、ist xmlns:android=" android:oneshot="false" > <item android:drawable="drawable/now_playing_matrix_01" android:duration="150"/> <item android:drawable="drawable/now_playing_matrix_02" android:duration="150"/> <item android:drawa

23、ble="drawable/now_playing_matrix_03" android:duration="150"/> <item android:drawable="drawable/now_playing_matrix_04" android:duration="150"/> <item android:drawable="drawable/now_playing_matrix_05" android:duration="150"/> &

24、lt;item android:drawable="drawable/now_playing_matrix_06" android:duration="150"/> <item android:drawable="drawable/now_playing_matrix_07" android:duration="150"/> <item android:drawable="drawable/now_playing_matrix_08" android:duration=&

25、quot;150"/> <item android:drawable="drawable/now_playing_matrix_09" android:duration="150"/></animation-list>播放动画rocketImage = (ImageView) findViewById(R.id.iv_icon);rocketImage.setBackgroundResource(R.drawable.animation_list);rocketAnimation = (AnimationDrawa

26、ble) rocketImage.getBackground();rocketAnimation.start();03_播放页面的完成-40<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android=" android:layout_width="match_parent" android:layout_height="match_parent" android:background="drawable

27、/base_bg" > <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <ImageView android:id="+id/iv_icon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_center

28、Horizontal="true" android:background="drawable/animation_list" /> <TextView android:id="+id/tv_artist" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_marg

29、inTop="40dip" android:text="演唱者" android:textColor="#ffffff" android:textSize="16sp" /> <TextView android:id="+id/tv_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizon

30、tal="true" android:layout_marginTop="60dip" android:text="歌曲名称" android:textColor="#ffffff" android:textSize="18sp" /> </RelativeLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content&

31、quot; android:layout_alignParentBottom="true" android:orientation="vertical" > <TextView android:id="+id/tv_time" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="right" android:layout_m

32、arginRight="10dip" android:text="20:11.22" android:textColor="#ffffff" android:textSize="18sp" /> <SeekBar android:id="+id/audio_seekBar" android:layout_width="match_parent" android:layout_height="wrap_content" android:max=&

33、quot;100" android:maxHeight="5dip" android:minHeight="5dip" android:progress="10" android:progressDrawable="drawable/music_progress_horizontal" android:thumb="drawable/seek_thumb" /> <LinearLayout android:layout_width="match_parent&qu

34、ot; android:layout_height="wrap_content" android:orientation="horizontal" > <Button android:layout_marginBottom="10dip" android:id="+id/btn_shuffle" android:background="drawable/btn_shuffle_order_selector" android:layout_width="wrap_conten

35、t" android:layout_height="wrap_content" /> <Button android:layout_marginBottom="10dip" android:id="+id/btn_pre" android:background="drawable/btn_pre_audio_selector" android:layout_width="wrap_content" android:layout_height="wrap_conte

36、nt" /> <Button android:layout_marginBottom="10dip" android:id="+id/btn_play_pause" android:background="drawable/btn_pause_audio_selector" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <Button android:lay

37、out_marginBottom="10dip" android:id="+id/btn_next" android:background="drawable/btn_next_audio_selector" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <Button android:layout_marginBottom="10dip" android:i

38、d="+id/btn_lyric" android:background="drawable/btn_lyric_selector" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout> </LinearLayout></RelativeLayout>04_创建服务MusicPlayerService&和创建对应的aidl文件IMusic

39、PlayerService.aidl-501_回顾服务调用的过程2_创建服务MusicPlayerService.java，基于此类改成IMusicPlayerService.aidl,名字一定要改public class MusicPlayerService extends Service Overridepublic void onCreate() super.onCreate();/* * 根据位置打开一个音频并且播放 * * param position */public void openAudio(int position) /* * 开始播放音频 */public void st

40、art() /* * 暂停 */public void pause() /* * 停止 */public void stop() /* * 得到歌曲的名称 */public String getAudioName() return ""/* * 得到歌曲演唱者的名字 */public String getArtistName() return ""/* * 得到歌曲的当前播放进度 */public int getCurrentPosition() return 0;/* * 得到歌曲的当前总进度 */public int getDuration() re

41、turn 0;/* * 播放下一首歌曲 */public void next() /* * 播放上一首歌曲 */public void pre() /* * 得到播放模式 */public int getPlayMode() return 0;/* * 设置播放模式 */public void setPlayMode(int mode) Overridepublic IBinder onBind(Intent intent) return stub;IMusicPlayerService.Stub stub = new IMusicPlayerService.Stub() MusicPlaye

42、rService service = MusicPlayerService.this;Overridepublic void stop() throws RemoteException service.stop();Overridepublic void start() throws RemoteException service.start();Overridepublic void setPlayMode(int mode) throws RemoteException service.setPlayMode(mode);Overridepublic void pre() throws R

43、emoteException service.pre();Overridepublic void pause() throws RemoteException service.pause();Overridepublic void openAudio(int position) throws RemoteException service.openAudio(position);Overridepublic void next() throws RemoteException service.next();Overridepublic int getPlayMode() throws Remo

44、teException / TODO Auto-generated method stubreturn service.getPlayMode();Overridepublic int getDuration() throws RemoteException / TODO Auto-generated method stubreturn service.getDuration();Overridepublic int getCurrentPosition() throws RemoteException / TODO Auto-generated method stubreturn servi

45、ce.getCurrentPosition();Overridepublic String getAudioName() throws RemoteException / TODO Auto-generated method stubreturn service.getAudioName();Overridepublic String getArtistName() throws RemoteException / TODO Auto-generated method stubreturn service.getArtistName();3_把方法体去掉package com.atguigu.

46、mobileplayer.audio;interface IMusicPlayerService /* * 根据位置打开一个音频并且播放 * param position */ void openAudio(int position);/* * 开始播放音频 */ void start();/* * 暂停 */ void pause();/* * 停止 */ void stop();/* * 得到歌曲的名称 */ String getAudioName(); /* * 得到歌曲演唱者的名字 */ String getArtistName(); /* * 得到歌曲的当前播放进度 */ int g

47、etCurrentPosition(); /* * 得到歌曲的当前总进度 */ int getDuration(); /* * 播放下一首歌曲 */ void next(); /* * 播放上一首歌曲 */ void pre(); /* * 得到播放模式 */ int getPlayMode(); /* * 设置播放模式 */ void setPlayMode(int mode); 05_实现播放一个音乐文件并且设置暂停和播放按钮状态-161_服务中加载音频 Overridepublic void onCreate() super.onCreate();getAudioData();/* *

48、得到手机里面的视频 媒体扫描器 */private void getAudioData() audioLists = new ArrayList<AudioItem>();/ 在子线程去得到视频new Thread() public void run() / 查找视频的路径Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;String projection = MediaStore.Audio.Media.DISPLAY_NAME,MediaStore.Audio.Media.DURATION,MediaStore.Audio.Media.SIZE,MediaStore.Audio.Media.DATA ;Cursor cursor = getContentResolver().query(uri, projection,null, null, null);while (cursor.moveToNext() String duration = cursor.getString(1);/ 视频总时长int length = Integer.valueOf(duration);if (length > 1000 *