完成了歌手照片保存到本地的功能，并在主活动播放栏显示歌手照片

app/src/main/java/com/example/musicplayer/constant/PlayerStatus.java

@@ -5,6 +5,7 @@ package com.example.musicplayer.constant;
  */
 
 public class PlayerStatus {
+    public static final String PLAYER_STATUS="PlayerStatus";
     public static final int PLAY=1;
     public static final int PAUSE=2;
     public static final int STOP=3;

app/src/main/java/com/example/musicplayer/entiy/Mp3Info.java

@@ -12,6 +12,7 @@ public class Mp3Info {
     private String url;
     private long albumId;
     private long id;
+    private boolean isImgSave;//照片是否保存到本地
 
     public void setId(long id) {
         this.id = id;
@@ -68,4 +69,12 @@ public class Mp3Info {
     public long getAlbumId() {
         return albumId;
     }
+
+    public void setImgSave(boolean imgSave) {
+        isImgSave = imgSave;
+    }
+
+    public boolean isImgSave() {
+        return isImgSave;
+    }
 }

app/src/main/java/com/example/musicplayer/entiy/Song.java

@@ -91,6 +91,8 @@ public class Song implements Serializable {
         this.albumId = albumId;
     }
 
+
+
     public String toString(){
         return "artist="+artist+",title="+title+",url="+url+",duration="+duration+
                 ",size"+size+",currentTime="+currentTime+",current="+current+",albumId="+albumId;

app/src/main/java/com/example/musicplayer/service/PlayerService.java

@@ -111,6 +111,7 @@ public class PlayerService extends Service {
                 isPlaying=false;
                 mediaPlayer.pause();
                 isPause = true;
+                sendBroadcast(new Intent("SONG_PAUSE"));//发送暂停的广播给主活动
             }
         }
 
@@ -141,6 +142,29 @@ public class PlayerService extends Service {
             mPlayStatusBinder.play(0);
 
 
+            sendBroadcast(new Intent("android.song.change")); //发送广播改变播放栏的信息
+            sendBroadcast(new Intent("android.song.change.local.song.list"));//发送广播改变当地列表的显示
+        }
+        public  void last(){
+            mCurrent=FileHelper.getSong().getCurrent();
+            mCurrent--;
+            if(mCurrent==-1){
+                mCurrent=mMp3InfoList.size()-1;
+            }
+
+            //将歌曲的信息保存起来
+            Song song=FileHelper.getSong();
+            song.setCurrent(mCurrent);
+            song.setTitle(mMp3InfoList.get(mCurrent).getTitle());
+            song.setArtist(mMp3InfoList.get(mCurrent).getArtist());
+            song.setDuration(mMp3InfoList.get(mCurrent).getDuration());
+            song.setUrl(mMp3InfoList.get(mCurrent).getUrl());
+            song.setId(mMp3InfoList.get(mCurrent).getId());
+            song.setAlbumId(mMp3InfoList.get(mCurrent).getAlbumId());
+            FileHelper.saveSong(song);
+            mPlayStatusBinder.play(0);
+
+
             sendBroadcast(new Intent("android.song.change")); //发送广播改变播放栏的信息
             sendBroadcast(new Intent("android.song.change.local.song.list"));//发送广播改变当地列表的显示
         }
@@ -159,6 +183,7 @@ public class PlayerService extends Service {
 
                 }
 
+
             }
 
         }

app/src/main/java/com/example/musicplayer/util/FileHelper.java

@@ -1,9 +1,21 @@
 package com.example.musicplayer.util;
 
 
+import android.content.Context;
+import android.graphics.Bitmap;
 import android.os.Environment;
+import android.support.annotation.Nullable;
 import android.util.Log;
+import android.view.View;
+import android.widget.ImageView;
 
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.request.RequestOptions;
+import com.bumptech.glide.request.target.SimpleTarget;
+import com.bumptech.glide.request.target.Target;
+import com.bumptech.glide.request.transition.Transition;
+import com.example.musicplayer.R;
+import com.example.musicplayer.contract.IPlayContract;
 import com.example.musicplayer.entiy.Song;
 
 import java.io.File;
@@ -14,6 +26,8 @@ import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 
+import de.hdodenhof.circleimageview.CircleImageView;
+
 /**
  * 将user序列化到本地并取出的工具
  * Created by 残渊 on 2018/7/24.
@@ -21,6 +35,7 @@ import java.io.ObjectOutputStream;
 
 
 public class FileHelper {
+    private static String TAG = "FileHelper";
 
     /**
      * 将person对象保存到文件中
@@ -48,6 +63,7 @@ public class FileHelper {
             e.printStackTrace();
         }
     }
+
     /**
      * 从文件中读出对象，并且返回Person对象
      */
@@ -71,4 +87,45 @@ public class FileHelper {
         return null;
     }
 
+    //保存图片到本地
+    public static void saveImgToNative(Context context, Bitmap bitmap, String singer) {
+        File file = new File(Environment.getExternalStorageDirectory() + "/yuanmusic/img/");
+        if (!file.exists()) {
+            file.mkdirs();
+        }
+        File singerImgFile = new File(file, singer + ".jpg");
+        FileOutputStream fos = null;
+        try {
+            fos = new FileOutputStream(singerImgFile);
+            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
+            fos.flush();
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+            Log.d(TAG, "saveImgToNative: fileNotFound");
+        } catch (IOException e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                if (fos != null) {
+                    fos.close();
+                }
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public static void setSingerImg (Context context, String singer, ImageView view) {
+        if(singer.contains("/")){
+            String[] s=singer.split("/");
+            singer=s[0];
+        }
+        singer=singer.trim();
+        String imgUrl = Environment.getExternalStorageDirectory() + "/yuanmusic/img/" + singer + ".jpg";
+
+        Glide.with(context)
+                .load(imgUrl)
+                .apply(RequestOptions.errorOf(R.drawable.background))
+                .into(view);
+    }
 }

app/src/main/java/com/example/musicplayer/util/MediaUtil.java

@@ -147,6 +147,14 @@ public class MediaUtil {
         }
         return min + ":" + sec.trim().substring(0, 2);
     }
+    public static String formatSinger(String singer){
+        if(singer.contains("/")){
+            String []s=singer.split("/");
+            singer=s[0];
+        }
+
+        return singer.trim();
+    }
 
 
 }

app/src/main/java/com/example/musicplayer/view/MainActivity.java

@@ -26,6 +26,7 @@ import android.widget.SeekBar;
 import android.widget.TextView;
 
 import com.example.musicplayer.R;
+import com.example.musicplayer.constant.PlayerStatus;
 import com.example.musicplayer.entiy.Song;
 import com.example.musicplayer.service.PlayerService;
 import com.example.musicplayer.util.FileHelper;
@@ -36,6 +37,7 @@ import de.hdodenhof.circleimageview.CircleImageView;
 public class MainActivity extends AppCompatActivity {
     private static final String TAG = "MainActivity";
 
+
     private boolean isChange; //拖动进度条
     private boolean isSeek;//标记是否在暂停的时候拖动进度条
     private boolean flag; //用做暂停的标记
@@ -74,6 +76,7 @@ public class MainActivity extends AppCompatActivity {
         setContentView(R.layout.activity_main);
         intentFilter = new IntentFilter();
         intentFilter.addAction("android.song.change");
+        intentFilter.addAction("SONG_PAUSE");
         songChangeReceiver = new SongChangeReceiver();
         registerReceiver(songChangeReceiver, intentFilter);
         initView();
@@ -96,7 +99,6 @@ public class MainActivity extends AppCompatActivity {
         mCircleAnimator.setRepeatMode(ValueAnimator.RESTART);
 
 
-
         if (mSong.getTitle() != null) {
             //启动服务
             Intent playIntent = new Intent(MainActivity.this, PlayerService.class);
@@ -108,6 +110,7 @@ public class MainActivity extends AppCompatActivity {
             mSingerTv.setText(mSong.getArtist());
             mSeekBar.setMax((int) mSong.getDuration());
             mSeekBar.setProgress((int) mSong.getCurrentTime());
+            FileHelper.setSingerImg(MainActivity.this,mSong.getArtist(),mCoverIv);
 
         } else {
             mLinear.setVisibility(View.GONE);
@@ -195,6 +198,13 @@ public class MainActivity extends AppCompatActivity {
             @Override
             public void onClick(View v) {
                 Intent toPlayActivityIntent = new Intent(MainActivity.this, PlayActivity.class);
+
+                if (mPlayStatusBinder.isPlaying()) {
+                    Song song=FileHelper.getSong();
+                    song.setCurrentTime(mPlayStatusBinder.getCurrentTime());
+                    FileHelper.saveSong(song);
+                    toPlayActivityIntent.putExtra(PlayerStatus.PLAYER_STATUS, PlayerStatus.PLAY);
+                }
                 startActivity(toPlayActivityIntent,
                         ActivityOptions.makeSceneTransitionAnimation(MainActivity.this).toBundle());
             }
@@ -241,15 +251,23 @@ public class MainActivity extends AppCompatActivity {
 
         @Override
         public void onReceive(Context context, Intent intent) {
+            String action = intent.getAction();
+
             mSong = FileHelper.getSong();
             mSongNameTv.setText(mSong.getTitle());
             mSingerTv.setText(mSong.getArtist());
+            FileHelper.setSingerImg(MainActivity.this,mSong.getArtist(),mCoverIv);
+
+            mSeekBar.setMax((int) mSong.getDuration());
+            if(action.equals("SONG_PAUSE")){
+                mPlayerBtn.setSelected(false);
+                mCircleAnimator.pause();
+            }else{
                 mPlayerBtn.setSelected(true);
-            mCoverIv.setImageBitmap(MediaUtil.getMusicBitmap(MainActivity.this,mSong.getId(),mSong.getAlbumId()));
                 mCircleAnimator.start();
-            mSeekBar.setMax((int) mSong.getDuration());
                 mSeekBarThread = new Thread(new SeekBarThread());
                 mSeekBarThread.start();
             }
         }
     }
+}

app/src/main/java/com/example/musicplayer/view/PlayActivity.java

@@ -8,11 +8,13 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.ServiceConnection;
 import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.graphics.Color;
 import android.graphics.PorterDuff;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.media.MediaPlayer;
+import android.os.Environment;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.Message;
@@ -27,13 +29,18 @@ import android.widget.SeekBar;
 import android.widget.TextView;
 
 import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.DataSource;
+import com.bumptech.glide.load.engine.GlideException;
+import com.bumptech.glide.request.RequestListener;
 import com.bumptech.glide.request.RequestOptions;
 import com.bumptech.glide.request.target.SimpleTarget;
 import com.bumptech.glide.request.target.Target;
 import com.bumptech.glide.request.transition.Transition;
 import com.example.musicplayer.R;
 import com.example.musicplayer.base.BaseActivity;
+import com.example.musicplayer.constant.PlayerStatus;
 import com.example.musicplayer.contract.IPlayContract;
+import com.example.musicplayer.entiy.Mp3Info;
 import com.example.musicplayer.entiy.Song;
 import com.example.musicplayer.presenter.PlayPresenter;
 import com.example.musicplayer.service.PlayerService;
@@ -45,10 +52,14 @@ import com.example.musicplayer.util.MediaUtil;
 import com.example.musicplayer.widget.BackgroundAnimationRelativeLayout;
 import com.example.musicplayer.widget.DiscView;
 
+import java.io.FileNotFoundException;
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * 播放界面
  */
-public class PlayActivity extends BaseActivity implements IPlayContract.View, DiscView.IPlayInfo {
+public class PlayActivity extends BaseActivity implements IPlayContract.View {
 
     private String TAG = "PlayActivity";
 
@@ -73,12 +84,12 @@ public class PlayActivity extends BaseActivity implements IPlayContract.View, Di
     private TextView mDurationTimeTv;
 
 
-
     private DiscView mDisc; //唱碟
     private ImageView mDiscImg; //唱碟中的歌手头像
     private Bitmap mImgBmp;
     private Button mGetImgAndLrcBtn;//获取封面和歌词
     private BackgroundAnimationRelativeLayout mRootLayout;
+    private List<Mp3Info> mMp3InfoList;//用来判断是否有本地照片
 
     //服务
     private Thread mSeekBarThread;
@@ -128,7 +139,6 @@ public class PlayActivity extends BaseActivity implements IPlayContract.View, Di
         registerReceiver(songChangeReceiver, mIntentFilter);
 
 
-
         mRootLayout = findViewById(R.id.relative_root);
         mSongTv = findViewById(R.id.tv_song);
         mSingerTv = findViewById(R.id.tv_singer);
@@ -143,7 +153,6 @@ public class PlayActivity extends BaseActivity implements IPlayContract.View, Di
 
 
         mDisc = findViewById(R.id.disc_view);
-        mDisc.setPlayInfoListener(this);
         mDiscImg = findViewById(R.id.iv_disc_background);
 
 
@@ -152,12 +161,21 @@ public class PlayActivity extends BaseActivity implements IPlayContract.View, Di
         bindService(playIntent, connection, Context.BIND_AUTO_CREATE);
 
         mSong = FileHelper.getSong();
+        mMp3InfoList = MediaUtil.getMp3Info();
         mSingerTv.setText(mSong.getArtist());
         mSongTv.setText(mSong.getTitle());
-        mCurrentTimeTv.setText(MediaUtil.formatTime(0));
+        mCurrentTimeTv.setText(MediaUtil.formatTime(mSong.getCurrentTime()));
         mDurationTimeTv.setText(MediaUtil.formatTime(mSong.getDuration()));
         mSeekBar.setMax((int) mSong.getDuration());
         mSeekBar.setProgress((int) mSong.getCurrentTime());
+        setLocalImg(mSong.getArtist());
+
+        if (getIntent().getIntExtra(PlayerStatus.PLAYER_STATUS, 2) == 1) {
+            mDisc.play();
+            mPlayBtn.setSelected(true);
+            startUpdateSeekBarProgress();
+        }
+
 
     }
 
@@ -284,6 +302,15 @@ public class PlayActivity extends BaseActivity implements IPlayContract.View, Di
                 } else {
                     mPlayBtn.setSelected(false);
                 }
+                mDisc.next();
+            }
+        });
+        mLastBtn.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mPlayStatusBinder.last();
+                mPlayBtn.setSelected(true);
+                mDisc.last();
             }
         });
     }
@@ -313,8 +340,11 @@ public class PlayActivity extends BaseActivity implements IPlayContract.View, Di
             @Override
             public void onResourceReady(@Nullable Drawable resource, Transition<? super Drawable> transition) {
 
-                Bitmap bitmap = ((BitmapDrawable) resource).getBitmap();
+                mImgBmp = ((BitmapDrawable) resource).getBitmap();
-                mImgBmp = bitmap;
+                //保存图片到本地
+                FileHelper.saveImgToNative(PlayActivity.this, mImgBmp, getSingerName());
+                Song song = FileHelper.getSong();
+                mMp3InfoList.get(song.getCurrent()).setImgSave(true);
                 try2UpdateMusicPicBackground(mImgBmp);
                 setDiscImg(mImgBmp);
                 CommonUtil.showToast(PlayActivity.this, "获取封面歌词成功");
@@ -335,32 +365,6 @@ public class PlayActivity extends BaseActivity implements IPlayContract.View, Di
     }
 
 
-    @Override
-    public void onMusicChanged(DiscView.MusicChangedStatus musicChangedStatus) {
-        switch (musicChangedStatus) {
-            case PLAY: {
-                //play();
-                break;
-            }
-            case PAUSE: {
-                // pause();
-                break;
-            }
-            case NEXT: {
-                //  next();
-                break;
-            }
-            case LAST: {
-                //   last();
-                break;
-            }
-            case STOP: {
-                //  stop();
-                break;
-            }
-        }
-    }
-
     //设置唱碟中歌手头像
     private void setDiscImg(Bitmap bitmap) {
         mDiscImg.setImageDrawable(mDisc.getDiscDrawable(bitmap));
@@ -380,32 +384,65 @@ public class PlayActivity extends BaseActivity implements IPlayContract.View, Di
             Song mSong = FileHelper.getSong();
             mSongTv.setText(mSong.getTitle());
             mSingerTv.setText(mSong.getArtist());
+            mDurationTimeTv.setText(MediaUtil.formatTime(mSong.getDuration()));
             mPlayBtn.setSelected(true);
+            setLocalImg(mSong.getArtist());//显示照片
             mSeekBar.setMax((int) mSong.getDuration());
             startUpdateSeekBarProgress();
 
         }
     }
-   private class SeekBarThread implements Runnable {
+
-        @Override
-        public void run() {
-            while (!isChange && mPlayStatusBinder.isPlaying()) {
-                mSeekBar.setProgress((int) mPlayStatusBinder.getCurrentTime());
-                try {
-                    Thread.sleep(1000);
-                } catch (InterruptedException e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-    }
     private void startUpdateSeekBarProgress() {
         /*避免重复发送Message*/
         stopUpdateSeekBarProgress();
         mMusicHandler.sendEmptyMessageDelayed(0, 1000);
     }
+
     private void stopUpdateSeekBarProgress() {
         mMusicHandler.removeMessages(0);
     }
 
+    private void setLocalImg(String singer) {
+
+        String imgUrl = Environment.getExternalStorageDirectory() + "/yuanmusic/img/"
+                + MediaUtil.formatSinger(singer) + ".jpg";
+        SimpleTarget target = new SimpleTarget<Drawable>(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL) {
+            @Override
+            public void onResourceReady(@Nullable Drawable resource, Transition<? super Drawable> transition) {
+                mGetImgAndLrcBtn.setVisibility(View.GONE);
+                mImgBmp = ((BitmapDrawable) resource).getBitmap();
+                try2UpdateMusicPicBackground(mImgBmp);
+                setDiscImg(mImgBmp);
+            }
+        };
+            Glide.with(this)
+                    .load(imgUrl)
+                    .listener(new RequestListener<Drawable>() {
+                        @Override
+                        public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
+                            mGetImgAndLrcBtn.setVisibility(View.VISIBLE);
+                            mGetImgAndLrcBtn.setText("获取封面和歌词");
+                            setDiscImg(BitmapFactory.decodeResource(getResources(),R.drawable.default_disc));
+                            return true;
+                        }
+
+                        @Override
+                        public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
+                            return false;
+                        }
+                    })
+                    .apply(RequestOptions.errorOf(R.drawable.background))
+                    .into(target);
+
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        unbindService(connection);
+        unregisterReceiver(songChangeReceiver);
+
+    }
+
 }

app/src/main/java/com/example/musicplayer/widget/DiscView.java

@@ -17,7 +17,6 @@ import android.view.animation.AccelerateInterpolator;
 import android.view.animation.LinearInterpolator;
 import android.widget.ImageView;
 import android.widget.RelativeLayout;
-import android.widget.Toast;
 
 import com.example.musicplayer.R;
 import com.example.musicplayer.util.CommonUtil;
@@ -44,7 +43,6 @@ public class DiscView extends RelativeLayout {
     public static final int DURATION_NEEDLE_ANIAMTOR = 500;
     private NeedleAnimatorStatus needleAnimatorStatus = NeedleAnimatorStatus.IN_FAR_END;
 
-    private IPlayInfo mIPlayInfo;
 
     private int mScreenWidth, mScreenHeight;
 
@@ -66,15 +64,7 @@ public class DiscView extends RelativeLayout {
         PLAY, PAUSE, STOP
     }
 
-    /*DiscView需要触发的音乐切换状态：播放、暂停、上/下一首、停止*/
-    public enum MusicChangedStatus {
-        PLAY, PAUSE, NEXT, LAST, STOP
-    }
 
-    public interface IPlayInfo {
-        /*用于更新音乐播放状态*/
-         void onMusicChanged(MusicChangedStatus musicChangedStatus);
-    }
 
     public DiscView(Context context) {
         this(context, null);
@@ -207,9 +197,6 @@ public class DiscView extends RelativeLayout {
         });
     }
 
-    public void setPlayInfoListener(IPlayInfo listener) {
-        this.mIPlayInfo = listener;
-    }
 
 
 
@@ -249,7 +236,7 @@ public class DiscView extends RelativeLayout {
     public ObjectAnimator getDiscObjectAnimator(ImageView disc) {
         ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(disc, View.ROTATION, 0, 360);
         objectAnimator.setRepeatCount(ValueAnimator.INFINITE);
-        objectAnimator.setDuration(20 * 1000);
+        objectAnimator.setDuration(30 * 1000);
         objectAnimator.setInterpolator(new LinearInterpolator());
 
         return objectAnimator;
@@ -286,14 +273,7 @@ public class DiscView extends RelativeLayout {
              * */
             needleAnimatorStatus = NeedleAnimatorStatus.TO_FAR_END;
         }
-        /**
+
-         * 动画可能执行多次，只有音乐处于停止 / 暂停状态时，才执行暂停命令
-         * */
-        if (musicStatus == MusicStatus.STOP) {
-            notifyMusicStatusChanged(MusicChangedStatus.STOP);
-        }else if (musicStatus == MusicStatus.PAUSE) {
-            notifyMusicStatusChanged(MusicChangedStatus.PAUSE);
-        }
     }
 
     /*播放唱盘动画*/
@@ -303,12 +283,7 @@ public class DiscView extends RelativeLayout {
         } else {
             mObjectAnimator.start();
         }
-        /**
+
-         * 唱盘动画可能执行多次，只有不是音乐不在播放状态，在回调执行播放
-         * */
-        if (musicStatus != MusicStatus.PLAY) {
-            notifyMusicStatusChanged(MusicChangedStatus.PLAY);
-        }
     }
 
     /*暂停唱盘动画*/
@@ -319,12 +294,6 @@ public class DiscView extends RelativeLayout {
     }
 
 
-    public void notifyMusicStatusChanged(MusicChangedStatus musicChangedStatus) {
-        if (mIPlayInfo != null) {
-            mIPlayInfo.onMusicChanged(musicChangedStatus);
-        }
-    }
-
     public void play() {
         playAnimator();
     }
@@ -339,19 +308,15 @@ public class DiscView extends RelativeLayout {
         pauseAnimator();
     }
 
-    public void playOrPause() {
+
-        if (musicStatus == MusicStatus.PLAY) {
-            pause();
-        } else {
-            play();
-        }
-    }
 
     public void next() {
+        playAnimator();
         selectMusicWithButton();
     }
 
     public void last() {
+        playAnimator();
         selectMusicWithButton();
     }
 

app/src/main/res/layout/activity_play.xml

@@ -34,16 +34,19 @@
                 android:id="@+id/tv_song"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:text="青茫"
                 android:textColor="@color/white"
-                android:textSize="18sp" />
+                android:textSize="18sp"
+                android:ellipsize="end"
+                android:maxEms="15"
+                android:singleLine="true"/>
 
             <TextView
                 android:id="@+id/tv_singer"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="5dp"
-                android:text="白敬亭、李宏毅、丁冠森、赵文龙"
+                android:ellipsize="end"
+                android:maxEms="15"
                 android:textColor="@color/white_easy" />
         </LinearLayout>
     </RelativeLayout>