基于安卓开发简单的音乐播放器，有音乐收藏，音乐播放，歌词滚动，音乐搜索和下载.zip

package com.music.utilbean; import java.io.*; import java.util.ArrayList; import android.content.Intent; import android.media.MediaScannerConnection; import android.os.Environment; import android.util.Log; import cn.hutool.json.JSONUtil; import com.music.kuwo.R; import android.R.integer; import android.content.ContentResolver; import android.content.ContentUris; import android.content.Context; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.BitmapFactory.Options; import android.net.Uri; import android.os.ParcelFileDescriptor; import android.provider.MediaStore; public class MediaUtils { //获取专辑封面的URLcontent://media/audio/albumart private static final Uri albumArtUri=Uri.parse("content://media/external/audio/albumart"); public static Mp3Info getMp3Info(Context context,Long _id) {//通过id获取单个音乐文件信息 Cursor cursor=context.getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,null, MediaStore.Audio.Media._ID+"="+_id, null, MediaStore.Audio.Media.DEFAULT_SORT_ORDER); Mp3Info mp3Info=null; // MediaStore,系统检测所有媒体，包括.mp3文件等等 if(cursor.moveToNext()){ mp3Info=new Mp3Info(); Long id=cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media._ID)); String title=cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.TITLE)); String artist=cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.ARTIST)); String album=cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM)); Long albumId=cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID)); Long duration=cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.DURATION)); Long size=cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.SIZE)); String url=cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.DATA)); int isMusic=cursor.getInt(cursor.getColumnIndex(MediaStore.Audio.Media.IS_MUSIC)); if(isMusic!=0){ mp3Info.setId(id); mp3Info.setTitle(title); mp3Info.setArtist(artist); mp3Info.setAlbum(album); mp3Info.setAlbumId(albumId); mp3Info.setDuration(duration); mp3Info.setSize(size); mp3Info.setUrl(url); } } cursor.close(); return mp3Info; } //获取音乐文件集合 public static ArrayList<Mp3Info> getMp3Infos(Context context) { Cursor cursor=context.getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,null, MediaStore.Audio.Media.DURATION+">=60000", null, MediaStore.Audio.Media.DEFAULT_SORT_ORDER); ArrayList<Mp3Info>mp3Infos=new ArrayList<Mp3Info>(); for(int i=0;i<cursor.getCount();i++){ cursor.moveToNext(); Mp3Info mp3Info=new Mp3Info(); Long id=cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media._ID)); String title=cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.TITLE)); String artist=cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.ARTIST)); String album=cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM)); Long albumId=cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID)); Long duration=cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.DURATION)); Long size=cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.SIZE)); String url=cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.DATA)); int isMusic=cursor.getInt(cursor.getColumnIndex(MediaStore.Audio.Media.IS_MUSIC)); if(isMusic!=0){ mp3Info.setId(id); mp3Info.setTitle(title); mp3Info.setArtist(artist); mp3Info.setAlbum(album); mp3Info.setAlbumId(albumId); mp3Info.setDuration(duration); mp3Info.setSize(size); mp3Info.setUrl(url); mp3Infos.add(mp3Info); } } cursor.close(); Log.i("mp3Infos", JSONUtil.toJsonStr(mp3Infos)); return mp3Infos; } //毫秒转换成分:秒，格式化时间 public static String formatTime(Long time) { String min=time/(1000*60)+""; String sec=time%(1000*60)+""; if(min.length()<2){ min="0"+time/(1000*60)+""; }else { min=time/(1000*60)+""; } if(sec.length()==4){ sec="0"+(time%(1000*60))+""; }else if (sec.length()==3) { sec="00"+(time%(1000*60))+""; }else if (sec.length()==2) { sec="000"+(time%(1000*60))+""; }else if(sec.length()==1){ sec="0000"+(time%(1000*60))+""; } return min+":"+sec.trim().substring(0, 2); } /** * 获取默认专辑图片 * @param context * @return */ public static Bitmap getDefaultArtwork(Context context,boolean small) { Options opts = new Options(); opts.inPreferredConfig = Bitmap.Config.RGB_565; if(small){ //返回小图片 return BitmapFactory.decodeStream(context.getResources().openRawResource(R.drawable.list_cd), null, opts); } return BitmapFactory.decodeStream(context.getResources().openRawResource(R.drawable.default_play_activity_bg), null, opts); } /** * 从文件当中获取专辑封面位图 * @param context * @param songid * @param albumid * @return */ private static Bitmap getArtworkFromFile(Context context, long songid, long albumid){ Bitmap bm = null; if(albumid < 0 && songid < 0) { throw new IllegalArgumentException("Must specify an album or a song id"); } try { Options options = new Options(); FileDescriptor fd = null; if(albumid < 0){ Uri uri = Uri.parse("content://media/external/audio/media/" + songid + "/albumart"); ParcelFileDescriptor pfd = context.getContentResolver().openFileDescriptor(uri, "r"); if(pfd != null) { fd = pfd.getFileDescriptor(); } } else { Uri uri = ContentUris.withAppendedId(albumArtUri, albumid); ParcelFileDescriptor pfd = context.getContentResolver().openFileDescriptor(uri, "r"); if(pfd != null) { fd = pfd.getFileDescriptor(); } } options.inSampleSize = 1; // 只进行大小判断 options.inJustDecodeBounds = true; // 调用此方法得到options得到图片大小 BitmapFactory.decodeFileDescriptor(fd, null, options); // 我们的目标是在800pixel的画面上显示 // 所以需要调用computeSampleSize得到图片缩放的比例 options.inSampleSize = 100; // 我们得到了缩放的比例，现在开始正式读入Bitmap数据 options.inJustDecodeBounds = false; options.inDither = false; options.inPreferredConfig = Bitmap.Config.ARGB_8888; //根据options参数，减少所需要的内存 bm = BitmapFactory.decodeFileDescriptor(fd, null, options); } catch (FileNotFoundException e) { e.printStackTrace(); } return bm; } /** * 获取专辑封面位图对象 * @param context * @param song_id * @param album_id * @param allowdefalut * @return */ public static Bitmap getArtwork(Context context, long song_id, long album_id, boolean allowdefalut, boolean small){ if(album_id < 0) { if(song_id < 0) { Bitmap bm = getArtworkFromFile(context, song_id, -1); if(bm != null) { return bm; } } if(allowdefalut) { return getDefaultArtwork(context, small); } return null; } ContentResolver res = context.getContentResolver(); Uri uri = ContentUris.withAppendedId(albumArtUri, album_id); if(uri != null) { InputStream in = null; try { in = res.openInputStream(uri); Options options = new Options(); //先制定原始大小 options.inSampleSize = 1; //只进行大小判断 options.inJustDecodeBounds = true; //调用此方法得到options得到图片的大小 BitmapFactory.decodeStream(in, null, options);