废话不多说上代码
private AudioManager audioManager;private SimpleDateFormat format;private SeekBar seekBar;private TextView musicLength;private TextView musicCur;private MediaPlayer mediaPlayer = new MediaPlayer();private ImageButton play;private ImageButton pause;private ImageButton stop;private Timer timer;private boolean isSeekBarChanging;//互斥变量，防止进度条与定时器冲突。private int currentPosition = 0;//当前音乐播放的进度private ImageView mDynamicCircle;private ObjectAnimator mCircleAnimator;private ImageView mDynamicCircle1;private ImageView mMp3;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_music_start);audioManager = (AudioManager) getSystemService(Service.AUDIO_SERVICE);findViewById(R.id.iv_goback).setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {finish();}});format = new SimpleDateFormat("mm:ss");musicLength = (TextView) findViewById(R.id.music_length);musicCur = (TextView) findViewById(R.id.music_cur);seekBar = (SeekBar) findViewById(R.id.seekBar);seekBar.setOnSeekBarChangeListener(new MySeekBar());play = (ImageButton) findViewById(R.id.play);pause = (ImageButton) findViewById(R.id.pause);stop = (ImageButton) findViewById(R.id.stop);play.setOnClickListener(this);pause.setOnClickListener(this);stop.setOnClickListener(this);donghua();donghua2();initMediaPlayer();//初始化mediaplayer}private void donghua(){mDynamicCircle = (ImageView) findViewById(R.id.cdbg);mCircleAnimator = ObjectAnimator.ofFloat(mDynamicCircle, "rotation", 0.0f, 360.0f);mCircleAnimator.setDuration(6000);mCircleAnimator.setInterpolator(new LinearInterpolator());mCircleAnimator.setRepeatCount(-1);mCircleAnimator.setRepeatMode(ObjectAnimator.RESTART);}private void donghua2(){mDynamicCircle1 = (ImageView) findViewById(R.id.cdbg1);mMp3 = (ImageView) findViewById(R.id.cdbg2);mMp3.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {if (!mediaPlayer.isPlaying()) {paly();}else {mCircleAnimator.pause();mDynamicCircle1.startAnimation(rotateAnimation1);mediaPlayer.pause();//暂停播放pause.setBackgroundResource(R.drawable.cdbgbut);}}});}private void initMediaPlayer() {try {mediaPlayer.setDataSource(Environment.getExternalStorageDirectory().getPath()+"/eBook/朴树+-+平凡之路.mp3");//指定音频文件的路径mediaPlayer.prepare();//让mediaplayer进入准备状态mediaPlayer.setLooping(true);mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {public void onPrepared(MediaPlayer mp) {seekBar.setMax(mediaPlayer.getDuration());musicLength.setText(format.format(mediaPlayer.getDuration())+"");musicCur.setText("00:00");}});} catch (Exception e) {e.printStackTrace();}}@Overridepublic void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {switch (requestCode) {case 1:if (grantResults.length > 0 &&grantResults[0] == PackageManager.PERMISSION_GRANTED) {initMediaPlayer();} else {Toast.makeText(MusicStartActivity.this,"denied access",Toast.LENGTH_SHORT).show();finish();}break;default:}}private void paly(){pause.setBackgroundResource(R.drawable.cdztbut);mDynamicCircle1.startAnimation(rotateAnimation);mCircleAnimator.start();mediaPlayer.start();//开始播放mediaPlayer.seekTo(currentPosition);//监听播放时回调函数timer = new Timer();timer.schedule(new TimerTask() {Runnable updateUI = new Runnable() {@Overridepublic void run() {musicCur.setText(format.format(mediaPlayer.getCurrentPosition())+"");}};@Overridepublic void run() {if(!isSeekBarChanging){seekBar.setProgress(mediaPlayer.getCurrentPosition());runOnUiThread(updateUI);}}},0,50);}@Overridepublic void onClick(View view) {switch (view.getId()){case R.id.play://if (!mediaPlayer.isPlaying()) {//paly();//}break;case R.id.pause:if (mediaPlayer.isPlaying()) {mCircleAnimator.pause();mDynamicCircle1.startAnimation(rotateAnimation1);mediaPlayer.pause();//暂停播放pause.setBackgroundResource(R.drawable.cdbgbut);}else {paly();}break;case R.id.stop://if (mediaPlayer.isPlaying()) {//mediaPlayer.reset();//停止播放//mCircleAnimator.end();//mDynamicCircle1.startAnimation(rotateAnimation1);//currentPosition = 0;//initMediaPlayer();//}break;default:break;}}@Overrideprotected void onDestroy() {super.onDestroy();isSeekBarChanging = true;if (mediaPlayer != null) {mediaPlayer.stop();mediaPlayer.release();mediaPlayer = null;}if (timer != null){timer.cancel();timer = null;}}/*进度条处理*/public class MySeekBar implements SeekBar.OnSeekBarChangeListener {public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {}/*滚动时,应当暂停后台定时器*/public void onStartTrackingTouch(SeekBar seekBar) {isSeekBarChanging = true;}/*滑动结束后，重新设置值*/public void onStopTrackingTouch(SeekBar seekBar) {isSeekBarChanging = false;currentPosition = seekBar.getProgress();mediaPlayer.seekTo(seekBar.getProgress());}}
布局文件
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="/apk/res/android"xmlns:app="/apk/res-auto"xmlns:tools="/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context="com.Activity"><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="30dp"android:layout_marginTop="24.5dp"android:layout_marginBottom="12dp"><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="30dp"android:gravity="center_vertical"><ImageViewandroid:layout_width="16dp"android:layout_height="25dp"android:layout_marginLeft="25dp"android:layout_centerVertical="true"android:background="@drawable/goback"/><ImageViewandroid:id="@+id/iv_grid_list_page_goback"android:layout_width="30dp"android:layout_height="30dp"android:layout_marginLeft="18dp" /><TextViewandroid:id="@+id/tv_succeed_experience_page_title"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_toRightOf="@+id/iv_grid_list_page_goback"android:text="返回"android:textSize="18sp"android:gravity="center_vertical"android:layout_centerVertical="true"android:layout_marginLeft="10dp"android:textColor="@color/textColorWrite"/><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="音乐"android:layout_centerVertical="true"android:textSize="22sp"android:textColor="@color/textColorBaiWrite"android:layout_centerInParent="true"/><ImageViewandroid:id="@+id/iv_goback"android:layout_width="wrap_content"android:layout_height="30dp"android:layout_alignLeft="@+id/iv_grid_list_page_goback"android:layout_alignRight="@+id/tv_succeed_experience_page_title"/></RelativeLayout></RelativeLayout><RelativeLayoutandroid:id="@+id/rl_mp3bg"android:layout_width="450dp"android:layout_height="430dp"android:layout_centerHorizontal="true"android:layout_marginTop="120dp"><ImageViewandroid:id="@+id/cdbg"android:layout_width="380dp"android:layout_height="380dp"android:layout_centerInParent="true"android:background="@drawable/cdbg"/><ImageViewandroid:id="@+id/cdbg2"android:layout_width="200dp"android:layout_height="69dp"android:layout_alignBottom="@+id/cdbg"android:layout_alignParentEnd="true"android:layout_marginBottom="20dp"android:layout_marginEnd="13dp" /><ImageViewandroid:id="@+id/cdbg1"android:layout_width="200dp"android:layout_height="40dp"android:layout_alignBottom="@+id/cdbg"android:layout_alignParentEnd="true"android:layout_marginBottom="59dp"android:layout_marginEnd="13dp"android:background="@drawable/cdkg" /></RelativeLayout><LinearLayoutandroid:id="@+id/bg_bg"android:layout_below="@+id/rl_mp3bg"android:gravity="center"android:layout_marginTop="50dp"android:layout_width="match_parent"android:layout_height="wrap_content"><ImageButtonandroid:id="@+id/play"android:background="@drawable/cdbfbut"android:padding="8dp"android:layout_width="30dp"android:layout_height="30dp"/><ImageButtonandroid:id="@+id/pause"android:background="@drawable/cdbgbut"android:layout_marginLeft="60dp"android:padding="12dp"android:layout_width="40dp"android:layout_height="40dp"/><ImageButtonandroid:id="@+id/stop"android:background="@drawable/cdtzbut"android:layout_marginLeft="60dp"android:padding="8dp"android:layout_width="30dp"android:layout_height="30dp"/></LinearLayout><LinearLayoutandroid:layout_below="@+id/bg_bg"android:layout_width="match_parent"android:layout_marginTop="35dp"android:gravity="center"android:layout_height="wrap_content"><SeekBarandroid:id="@+id/seekBar"android:layout_gravity="center_vertical"android:background="@null"android:max="100"android:maxHeight="6dp"android:progressDrawable="@drawable/seek_progress"android:thumb="@drawable/seek_thumbicon2"android:thumbOffset="8dp"android:progressBackgroundTint="#30ffffff"android:thumbTint="@color/video_progress1"android:layout_width="729dp"android:layout_centerHorizontal="true"android:layout_height="30dp"/><LinearLayoutandroid:layout_alignEnd="@id/seekBar"android:layout_width="wrap_content"android:gravity="center_vertical"android:layout_height="wrap_content"><TextViewandroid:id="@+id/music_cur"android:textColor="@color/textColorBaiWrite"android:layout_width="wrap_content"android:layout_height="wrap_content"/><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:textColor="@color/textColorBaiWrite"android:text="/"/><TextViewandroid:id="@+id/music_length"android:textColor="@color/textColorBaiWrite"android:layout_width="wrap_content"android:layout_height="wrap_content"/></LinearLayout></LinearLayout></RelativeLayout>
