Mobile phone audio and video 3-local video list, audio and video 3-list

Mobile phone audio and video 3-local video list, audio and video 3-list

1. Write layout relative layout: ListView, TextView, and ProgressBar, initialization

1 <? Xml version = "1.0" encoding = "UTF-8"?> 2 <RelativeLayout xmlns: android = "http://schemas.android.com/apk/res/android" 3 android: layout_width = "match_parent" 4 android: layout_height = "match_parent"> 5 6 <ListView 7 android: divider = "@ null" 8 android: id = "@ + id/listview" 9 android: layout_width = "match_parent" 10 android: layout_height = "match_parent"/> 11 12 <TextView13 android: id = "@ + id/TV _nomedia" 14 android: layout_width = "wrap_content" 15 android: layout_height = "wrap_content" 16 android: layout_centerInParent = "true" 17 android: text = "no video found... "18 android: textColor =" #000000 "19 android: textSize =" 18sp "20 android: visibility =" gone "/> 21 22 <ProgressBar23 android: id = "@ + id/pb_loading" 24 android: layout_width = "wrap_content" 25 android: layout_height = "wrap_content" 26 android: layout_centerInParent = "true" 27/> 28 29 </RelativeLayout>

Video_pager.xml

 

2. Load the local video, load the video in the Child thread, and load the video into the collection; set the adapter to be in the main thread; Use Handler to set the adapter

1 public class VideoPager extends BasePager {2 3 private ListView listview; 4 private TextView TV _nomedia; 5 private ProgressBar pb_loading; 6 7 8 private VideoPagerAdapter videoPagerAdapter; 9 10/** 11 * data set 12 */13 private ArrayList <MediaItem> mediaItems; 14 15 16 public VideoPager (Context context) {17 super (context ); 18 19} 20 21 private Handler handler = new Handler () {22 @ Override 23 pu Blic void handleMessage (Message msg) {24 super. handleMessage (msg); 25 if (mediaItems! = Null & mediaItems. size ()> 0) {26 // there is data 27 // set adapter 28 videoPagerAdapter = new VideoPagerAdapter (context, mediaItems, true); 29 listview. setAdapter (videoPagerAdapter); 30 // hide the text 31 TV _nomedia.setVisibility (View. GONE); 32} else {33 // No data 34 // text display 35 TV _nomedia.setVisibility (View. VISIBLE); 36} 37 38 39 // ProgressBar hide 40 pb_loading.setVisibility (View. GONE); 41} 42}; 43 44/*** 45 * initializes the control of the current page, with the parent class Call 46 * @ return 47 */48 @ Override 49 public View initView () {50 View view = View. inflate (context, R. layout. video_pager, null); 51 listview = (ListView) view. findViewById (R. id. listview); 52 TV _nomedia = (TextView) view. findViewById (R. id. TV _nomedia); 53 pb_loading = (ProgressBar) view. findViewById (R. id. pb_loading); 54 // set the Click Event of the ListView Item 55 listview. setOnItemClickListener (new MyOnItemClickListen Er (); 56 return view; 57} 58 59 class MyOnItemClickListener implements AdapterView. OnItemClickListener {60 61 @ Override 62 public void onItemClick (AdapterView <?> Parent, View view, int position, long id) {63 64 MediaItem mediaItem = mediaItems. get (position); 65 // Toast. makeText (context, "mediaItem =" + mediaItem. toString (), Toast. LENGTH_SHORT ). show (); 66 67 // 1. enable all playing of the system-implicit Intent 68 // intent Intent = new intent (); 69 // Intent. setDataAndType (Uri. parse (mediaItem. getData (), "video/*"); 70 // context. startActivity (intent); 71 72 // 2. call the self-written player-explicit-a playback address 73 // Int Ent intent = new Intent (context, SystemVideoPlayer. class); 74 // intent. setDataAndType (Uri. parse (mediaItem. getData (), "video/*"); 75 // context. startActivity (intent); 76 // 3. transmit list data-object-serialization 77 Intent intent = new Intent (context, SystemVideoPlayer. class); 78 Bundle bundle = new Bundle (); 79 bundle. putSerializable ("videolist", mediaItems); 80 intent. putExtras (bundle); 81 intent. putExtra ("position", positi On); 82 context. startActivity (intent); 83 84} 85} 86 87 88 @ Override 89 public void initData () {90 super. initData (); 91 LogUtil. e ("local video data is initialized... "); 92 // load the local video data 93 getDataFromLocal (); 94} 95 96/** 97 * get the data 98 */1 from the local sdcard. traverse sdcard with the suffix 99 * // 2. obtain video 100 * // 3 from the content provider. for a 6.0 system, dynamically obtain the permission to read sdcard 101 */102 private void getDataFromLocal () {103 104 new Thread () {105 @ Override106 public void run () {107 super. run (); 108 109 // isGrantExternalRW (Activity) context); 110 // SystemClock. sleep (2000); 111 mediaItems = new ArrayList <> (); 112 ContentResol Ver resolver = context. getContentResolver (); 113 Uri uri = MediaStore. video. media. EXTERNAL_CONTENT_URI; 114 String [] objs = {115 MediaStore. video. media. DISPLAY_NAME, // The name of the video file in sdcard 116 MediaStore. video. media. DURATION, // The total video DURATION is 117 MediaStore. video. media. SIZE, // the video file SIZE is 118 MediaStore. video. media. DATA, // The absolute video address 119 MediaStore. video. media. ARTIST, // Song ARTIST 120 121}; 122 Cursor cursor = resolver. query (uri, objs, Null,); 123 if (cursor! = Null) {124 while (cursor. moveToNext () {125 126 MediaItem mediaItem = new MediaItem (); 127 128 mediaItems. add (mediaItem); // write it on the top 129 130 String name = cursor. getString (0); // The video name 131 mediaItem. setName (name); 132 133 long duration = cursor. getLong (1); // The video duration is 134 mediaItem. setDuration (duration); 135 136 long size = cursor. getLong (2); // the video file size is 137 mediaItem. setSize (size); 138 139 String data = cursor. getString (3); // The Video Stream playback address 140 mediaItem. setData (data); 141 142 String artist = cursor. getString (4); // artist 143 mediaItem. setArtist (artist); 144} 145 146 cursor. close (); 147} 148 149 // Handler sends the message 150 handler. senddemptymessage (10); 151} 152 }. start (); 153 154} 155 156/** 157 * solve the problem that android 6.0 and later versions cannot read external storage permissions. 158 * @ param activity159 * @ return160 */161 public static boolean isGrantExternalRW (Activity activity) {162 if (Build. VERSI ON. SDK_INT> = Build. VERSION_CODES.M & activity. checkSelfPermission (163 Manifest. permission. WRITE_EXTERNAL_STORAGE )! = PackageManager. PERMISSION_GRANTED) {164 165 activity. requestPermissions (new String [] {166 Manifest. permission. READ_EXTERNAL_STORAGE, 167 Manifest. permission. WRITE_EXTERNAL_STORAGE168}, 1); 169 170 return false; 171} 172 173 return true; 174} 175 176}

VideoPager. java

 

3. Set the item click event to play the video.