简易音乐播放器（Android Studio）

Bertha 。 2022-05-17 04:25 404阅读 0赞

Android期末作业，临时抱佛脚（手动滑稽

分享下音乐播放的源码吧。（只能播放内嵌音乐

PS：完整工程下载及相关说明：[https://download.csdn.net/download/weixin\_41918712/10586908][https_download.csdn.net_download_weixin_41918712_10586908]

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# **注意事项** #

卫星式菜单参考：[https://www.cnblogs.com/tianhengblogs/p/5265195.html][https_www.cnblogs.com_tianhengblogs_p_5265195.html]

接下来是音乐播放器步骤：

*  在工程文件夹“ ..\\app\\src\\main\\res ”下，新建一个文件夹“raw”，然后把音乐放进去，命名为“ lucky.mp3 ” ；
 *  在工程文件夹 “ ..\\app\\src\\main\\res\\drawable ”下，放入你喜欢的图片作为播放器背景，命名为“bg1”；以及4个控制按钮(尺寸：34\*30)，分别命名为 “exit”，“stop”，“play”，“pause”，和菜单按钮(尺寸：45\*42) “menu” ；
 *  在工程文件夹 “ ..\\app\\src\\main\\res\\mipmap-hdpi ”下，放入歌手海报，命名为“img”。由于要制作旋转效果，故推荐选择圆形的图片；
 *  在工程文件夹“ ..\\app\\src\\main\\res ”下，新建一个文件夹“anim”，在里面新建3个xml文档，命名为“anim.xml”，“bigalpha.xml”，“smallalpha.xml”；
 *  “ AndroidManifest.xml ”里，在</activity>后加一句<service android:name=".MusicService" android:enabled="true" android:exported="true" />
 *  在工程文件夹“ ..\\app\\src\\main\\res\\values ”下，新建xml文档，命名为“dimens.xml”；找到styles.xml文件，把
    
        <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    
    改为
    
        <style name="AppTheme" parent="Base.Theme.AppCompat.Light.DarkActionBar">

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# **预览图** #

![70][]

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# **源码** #

anim.xml

<?xml version="1.0" encoding="utf-8"?>
    <set xmlns:android="http://schemas.android.com/apk/res/android">
        <rotate
            android:duration="300"
            android:fromDegrees="0"
            android:toDegrees="360"
            android:pivotX="50%"
            android:pivotY="50%"/>
    </set>

bigalpha.xml

<?xml version="1.0" encoding="utf-8"?>
    
    <set xmlns:android="http://schemas.android.com/apk/res/android"
        android:fillAfter="true">
        <alpha
            android:duration="200"
            android:fromAlpha="1"
            android:toAlpha="0"/>
        <scale
            android:duration="200"
            android:fromXScale="1"
            android:fromYScale="1"
            android:toXScale="3"
            android:toYScale="3"
            android:pivotX="50%"
            android:pivotY="50%" />
    </set>

smallalpha.xml

<?xml version="1.0" encoding="utf-8"?>
    
    <set xmlns:android="http://schemas.android.com/apk/res/android"
        android:fillAfter="true">
        <alpha
            android:duration="200"
            android:fromAlpha="1"
            android:toAlpha="0"/>
        <scale
            android:duration="200"
            android:fromXScale="1"
            android:fromYScale="1"
            android:toXScale="0"
            android:toYScale="0"
            android:pivotX="50%"
            android:pivotY="50%" />
    </set>

dimens.xml

MainActivity.java

1package com.example.slyarh.text;
    
    import android.animation.ObjectAnimator;
    import android.content.ComponentName;
    import android.content.Intent;
    import android.content.ServiceConnection;
    import android.os.Bundle;
    import android.os.Handler;
    import android.os.IBinder;
    import android.support.v7.app.AppCompatActivity;
    import android.util.Log;
    import android.view.KeyEvent;
    import android.view.View;
    import android.view.animation.LinearInterpolator;
    import android.widget.ImageView;
    import android.widget.SeekBar;
    import android.widget.TextView;
    
    import java.text.SimpleDateFormat;
    
    public class MainActivity extends AppCompatActivity {
        private TextView musicStatus, musicTime, musicTotal;
        private SeekBar seekBar;
        private ImageView btnPlayOrPause, btnStop, btnQuit;
        private SimpleDateFormat time = new SimpleDateFormat("mm:ss");
        private boolean tag1 = false;
        private boolean tag2 = false;
        private MusicService musicService;
        private ArcDemo mArc;
        //  在Activity中调用 bindService 保持与 Service 的通信
        private void bindServiceConnection() {
            Intent intent = new Intent(MainActivity.this, MusicService.class);
            startService(intent);
            bindService(intent, serviceConnection, this.BIND_AUTO_CREATE);
        }
    
        //  回调onServiceConnected 函数，通过IBinder 获取 Service对象，实现Activity与 Service的绑定
        private ServiceConnection serviceConnection = new ServiceConnection() {
            @Override
            public void onServiceConnected(ComponentName name, IBinder service) {
                musicService = ((MusicService.MyBinder) (service)).getService();
                Log.i("musicService", musicService + "");
                musicTotal.setText(time.format(musicService.mediaPlayer.getDuration()));
            }
            @Override
            public void onServiceDisconnected(ComponentName name) {
                musicService = null;
            }
        };
    
        //  通过 Handler 更新 UI 上的组件状态
        public Handler handler = new Handler();
        public Runnable runnable = new Runnable() {
            @Override
            public void run() {
                musicTime.setText(time.format(musicService.mediaPlayer.getCurrentPosition()));
                seekBar.setProgress(musicService.mediaPlayer.getCurrentPosition());
                seekBar.setMax(musicService.mediaPlayer.getDuration());
                musicTotal.setText(time.format(musicService.mediaPlayer.getDuration()));
                handler.postDelayed(runnable, 200);
    
            }
        };
    
        private void findViewById() {
            musicTime = (TextView) findViewById(R.id.MusicTime);
            musicTotal = (TextView) findViewById(R.id.MusicTotal);
            seekBar = (SeekBar) findViewById(R.id.MusicSeekBar);
            btnPlayOrPause = (ImageView) findViewById(R.id.BtnPlayorPause);
            btnStop = (ImageView) findViewById(R.id.BtnStop);
            btnQuit = (ImageView) findViewById(R.id.BtnQuit);
            musicStatus = (TextView) findViewById(R.id.MusicStatus);
    
        }
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            findViewById();
            bindServiceConnection();
            //myListener();
    
    
            ImageView imageView = (ImageView) findViewById(R.id.Image);
            final ObjectAnimator animator = ObjectAnimator.ofFloat(imageView, "rotation", 0f, 360.0f);
            animator.setDuration(10000);
            animator.setInterpolator(new LinearInterpolator());
            animator.setRepeatCount(-1);
    
    
    
            seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
                @Override
                public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                    if (fromUser == true) {
                        musicService.mediaPlayer.seekTo(progress);
                    }
                }
    
                @Override
                public void onStartTrackingTouch(SeekBar seekBar) {
    
                }
    
                @Override
                public void onStopTrackingTouch(SeekBar seekBar) {
    
                }
            });
            mArc = (ArcDemo) findViewById(R.id.view_arc);
            mArc.setOnSubItemClickListener(new ArcDemo.onSubItemClickListener() {
                @Override
                public void onItemClick(View view, int position) {
                    if(position==5){
                        if (musicService.mediaPlayer != null) {
                            seekBar.setProgress(musicService.mediaPlayer.getCurrentPosition());
                            seekBar.setMax(musicService.mediaPlayer.getDuration());
                        }
                        //  由tag的变换来控制事件的调用
                        if (musicService.tag != true) {
                            //btnPlayOrPause.setText("PAUSE");
                            musicStatus.setText("正在播放..");
                            musicService.playOrPause();
                            musicService.tag = true;
                            btnPlayOrPause.setImageDrawable(getResources().getDrawable(R.drawable.pause));
                            if (tag1 == false) {
                                animator.start();
                                tag1 = true;
                            }
                            else {
                                animator.resume();
                            }
                        }
                        else {
                            //btnPlayOrPause.setText("PLAY");
                            musicStatus.setText("暂停播放..");
                            musicService.playOrPause();
                            animator.pause();
                            btnPlayOrPause.setImageDrawable(getResources().getDrawable(R.drawable.play));
                            musicService.tag = false;
                        }
                        if (tag2 == false) {
                            handler.post(runnable);
                            tag2 = true;
                        }
                    }
                    else if(position==6){
                        musicStatus.setText("停止播放..");
                        //  btnPlayOrPause.setText("PLAY");
                        musicService.stop();
                        btnPlayOrPause.setImageDrawable(getResources().getDrawable(R.drawable.play));
                        animator.pause();
                        musicService.tag = false;
                    }
                    else if(position==7) exit();
                }
    
            });
        }
    
    
        // 停止服务时，必须解除绑定，写入btnQuit按钮中
        public void exit(){
            handler.removeCallbacks(runnable);
            unbindService(serviceConnection);
            Intent intent = new Intent(MainActivity.this, MusicService.class);
            stopService(intent);
            try {
                MainActivity.this.finish();
            } catch (Exception e) {}
        }
    
    
        //  获取并设置返回键的点击事件
        @Override
        public boolean onKeyDown(int keyCode, KeyEvent event) {
            if (keyCode == KeyEvent.KEYCODE_BACK) {
                moveTaskToBack(false);
                return true;
            }
            return super.onKeyDown(keyCode, event);
        }
    }

activity\_main.xml

1<?xml version="1.0" encoding="utf-8"?>
    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        >
    
        <LinearLayout
            android:layout_width="wrap_content"
            android:background="@drawable/bg1"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:gravity="center"
            android:orientation="vertical">
    
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical"
                android:background="#00000000"
                android:paddingBottom="16dp"
                android:paddingLeft="16dp"
                android:paddingRight="16dp"
                android:paddingTop="16dp">
                <ImageView
                    android:id="@+id/Image"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:src="@mipmap/img" />
                
                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text=""
                    android:id="@+id/MusicStatus"/>
                <RelativeLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:layout_margin="5dp"
                    android:gravity="center_horizontal">
                    
                    <TextView
                        android:id="@+id/MusicTime"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="00:00" />
                    <SeekBar
                        android:layout_width="230sp"
                        android:layout_height="wrap_content"
                        android:id="@+id/MusicSeekBar"
                        android:layout_weight="1"
                        android:max="100"
                        android:layout_toRightOf="@+id/MusicTime"/>
                    
                    <TextView
                        android:id="@+id/MusicTotal"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="00:00"
                        android:layout_toRightOf="@+id/MusicSeekBar"/>
                </RelativeLayout>
            </LinearLayout>
    
            <RelativeLayout
                android:layout_width="match_parent"
                android:background="#00000000"
                android:layout_height="match_parent">
                <com.example.slyarh.text.ArcDemo
                    android:background="#00000000"
                    android:id="@+id/view_arc"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentLeft="true"
                    android:layout_alignParentStart="true"
                    android:layout_alignParentTop="true">
                    <RelativeLayout
                        android:id="@+id/main_menu"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:background="@drawable/menu">
                    </RelativeLayout>
                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"/>
                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"/>
                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"/>
                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"/>
                    <ImageView
                        android:id="@+id/BtnPlayorPause"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:src="@drawable/play" />
    
                    <ImageView
                        android:id="@+id/BtnStop"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:src="@drawable/stop" />
    
                    <ImageView
                        android:id="@+id/BtnQuit"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:src="@drawable/exit" />
                </com.example.slyarh.text.ArcDemo>
            </RelativeLayout>
        </LinearLayout>
    </FrameLayout>

MusicService.java

1package com.example.slyarh.text;
    import android.app.Service;
    import android.content.Intent;
    import android.media.MediaPlayer;
    import android.os.Binder;
    import android.os.IBinder;
    
    public class MusicService extends Service {
        public MediaPlayer mediaPlayer=null;
        public boolean tag = false;
    
        public MusicService() {
            mediaPlayer = new MediaPlayer();
    
            try {
                mediaPlayer.reset();
                mediaPlayer = MediaPlayer.create(this, R.raw.lucky);
                mediaPlayer.seekTo(0);
                mediaPlayer.setLooping(true);
                stop();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
        //  通过 Binder 来保持 Activity 和 Service 的通信
        public MyBinder binder = new MyBinder();
        public class MyBinder extends Binder {
            MusicService getService() {
                return MusicService.this;
            }
        }
        public void playOrPause() {
            if (mediaPlayer.isPlaying()) {
                mediaPlayer.setLooping(true);
                mediaPlayer.pause();
    
            } else {
                mediaPlayer.setLooping(true);
                mediaPlayer.start();
    
            }
        }
    
        public void stop() {
            if (mediaPlayer != null) {
                mediaPlayer.stop();
                mediaPlayer.setLooping(true);
                try {
                    mediaPlayer.reset();
                    mediaPlayer = MediaPlayer.create(this, R.raw.lucky);
                    mediaPlayer.seekTo(0);
                    mediaPlayer.setLooping(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    
        @Override
        public boolean onUnbind(Intent intent) {
            return super.onUnbind(intent);
        }
    
        @Override
        public IBinder onBind(Intent intent) {
            return binder;
        }
    }

ArcDemo.java

package com.example.slyarh.text;
    import android.content.Context;
    import android.util.AttributeSet;
    import android.view.View;
    import android.view.ViewGroup;
    import android.view.animation.Animation;
    import android.view.animation.AnimationSet;
    import android.view.animation.AnimationUtils;
    import android.view.animation.RotateAnimation;
    import android.view.animation.TranslateAnimation;
    
    
    public class ArcDemo extends ViewGroup {
        private View mButton;
        private BStatus mBStatus = BStatus.STATUS_CLOSE;
        private onSubItemClickListener onListener;
        public enum BStatus {
            STATUS_OPEN, STATUS_CLOSE
        }
    
        //子菜单点击接口
        public interface onSubItemClickListener {
            void onItemClick(View view, int position);
        }
    
        public void setOnSubItemClickListener(onSubItemClickListener mListener) {
            this.onListener = mListener;
        }
    
        public ArcDemo(Context context) {
            super(context);
    //        this(context, null);
        }
    
        public ArcDemo(Context context, AttributeSet attrs) {
            super(context, attrs);
    //        this(context, attrs, 0);
        }
    
        public ArcDemo(Context context, AttributeSet attrs, int defStyleAttr) {
            super(context, attrs, defStyleAttr);
        }
    
        @Override
        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
            int count = getChildCount();
            for (int i = 0; i < count; i++) {
                measureChild(getChildAt(i), widthMeasureSpec, heightMeasureSpec);
            }
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        }
    
        //添加布局，就是所要显示的控件View
        @Override
        protected void onLayout(boolean changed, int l, int t, int r, int b) {
            if (changed) {
                //主菜单按钮
                onMainButton();
                //子菜单按钮
                onSubItemButton();
            }
        }
    
        //获取主菜单按钮
        private void onMainButton() {
            mButton = getChildAt(0);
            mButton.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    //主菜单动画
                    Animation rotateAnim = AnimationUtils.loadAnimation(getContext(), R.anim.anim);
                    mButton.startAnimation(rotateAnim);
    
                    //子菜单动画
                    subItemAnim();
                }
            });
            int l, t, r = 0, b = 0;
            int mWidth = mButton.getMeasuredWidth();
            int mHeight = mButton.getMeasuredHeight();
    
            l = getMeasuredWidth() - mWidth;
            t = getMeasuredHeight() - mHeight;
    
            mButton.layout(l, t, getMeasuredWidth(), getMeasuredHeight());
        }
    
        //获取子菜单按钮
        private void onSubItemButton() {
            int count = getChildCount();
            for (int i = 0; i < count - 1; i++) {
                View childView = getChildAt(i + 1);
    
                //开始时不呈现子菜单
                childView.setVisibility(View.GONE);
    
                int radius = 350;
                int cl, ct, cr, cb;
    
                cr = (int) (radius * Math.sin(Math.PI / 2 / (count - 2) * i));
                cb = (int) (radius * Math.cos(Math.PI / 2 / (count - 2) * i));
    
                int cWidth = childView.getMeasuredWidth();
                int cHeight = childView.getMeasuredHeight();
    
                cl = getMeasuredWidth() - cWidth - cr;
                ct = getMeasuredHeight() - cHeight - cb;
    
                //layout(l,t,r,b);前两参数决定位置，后两参数决定大小
                //参数(1,t)为View控件的左上角坐标
                // (r-l,b-t)为View控件大小,r-l为控件宽度,b-t为控件高度
                childView.layout(cl, ct, getMeasuredWidth() - cr, getMeasuredHeight() - cb);
            }
        }
    
        //子菜单散开回笼动画
        public void subItemAnim() {
            int count = getChildCount();
            for (int i = 0; i < count - 1; i++) {
                final View cView = getChildAt(i + 1);
    
                //点击主菜单后，子菜单就立刻呈现，否则后面的动画无法完成
                cView.setVisibility(VISIBLE);
    
                int radius = 350;
                int l, t, r, d;
    
                r = (int) (radius * Math.sin(Math.PI / 2 / (count - 2) * i));
                d = (int) (radius * Math.cos(Math.PI / 2 / (count - 2) * i));
    
    //            int cWidth = cView.getMeasuredWidth();
    //            int cHeight = cView.getMeasuredHeight();
    //
    //            l = getMeasuredWidth() - cWidth - r;
    //            t = getMeasuredHeight() - cHeight - d;
    
                AnimationSet set = new AnimationSet(true);
                Animation tranAnim = null;
                if (mBStatus == BStatus.STATUS_CLOSE) {
                    //散开动画
                    tranAnim = new TranslateAnimation(r, 0, d, 0);
                    cView.setClickable(true);
                    cView.setFocusable(true);
                } else {
                    //回笼动画
                    tranAnim = new TranslateAnimation(0, r, 0, d);
                    cView.setClickable(false);
                    cView.setFocusable(false);
                }
                tranAnim.setDuration(300);
    //            tranAnim.setFillAfter(true);  //让最后一帧的动画不消失
                tranAnim.setStartOffset(100 * i / count);
                tranAnim.setAnimationListener(new Animation.AnimationListener() {
                    @Override
                    public void onAnimationStart(Animation animation) {
    
                    }
    
                    @Override
                    public void onAnimationEnd(Animation animation) {
                        if (mBStatus == BStatus.STATUS_CLOSE) {
                            cView.setVisibility(GONE);
                        }
                    }
    
                    @Override
                    public void onAnimationRepeat(Animation animation) {
    
                    }
                });
    
    
                Animation rotateAnim = new RotateAnimation(
                        0, 360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
                rotateAnim.setDuration(300);
    //            rotateAnim.setFillAfter(false);
    
                set.addAnimation(rotateAnim);
                set.addAnimation(tranAnim);
                cView.startAnimation(set);
    
                //散开后子菜单的点击监听事件
                final int pos = i + 1;
                cView.setOnClickListener(new OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        if (onListener != null) {
                            onListener.onItemClick(cView, pos);
                        }
                        //散开后点击子菜单动画
                        subItemClickAnim(pos - 1);
                        changStatus();
                    }
                });
            }
            changStatus();
        }
    
        //监听子菜单状态改变
        private void changStatus() {
            mBStatus = (mBStatus == BStatus.STATUS_CLOSE ? BStatus.STATUS_OPEN : BStatus.STATUS_CLOSE);
        }
    
        //散开后点击子菜单动画
        private void subItemClickAnim(int pos) {
            int count = getChildCount();
            for (int i = 0;i<count-1;i++) {
                View cView = getChildAt(i+1);
    
                if(i == pos) {
                    //变大，变透明
                    cView.startAnimation(toBig());
                }
                else {
                    //变小，变透明
                    cView.startAnimation(toSmall());
                }
                cView.setClickable(false);
                cView.setFocusable(false);
            }
        }
    
        //变大，变透明
        private Animation toBig(){
            Animation big = AnimationUtils.loadAnimation(getContext(),R.anim.bigalpha);
            return big;
        }
    
        //变小，变透明
        private Animation toSmall(){
            Animation small = AnimationUtils.loadAnimation(getContext(),R.anim.smallalpha);
            return small;
        }
    
        //给ListView调用
        public boolean isOpen() {
            return mBStatus == BStatus.STATUS_OPEN;
        }
    
    }

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✎﹏﹏₯㎕《晴天》从出生那年就飘着...﹍﹍﹍﹍﹍﹍

[https_download.csdn.net_download_weixin_41918712_10586908]: https://download.csdn.net/download/weixin_41918712/10586908
[https_www.cnblogs.com_tianhengblogs_p_5265195.html]: https://www.cnblogs.com/tianhengblogs/p/5265195.html
[70]: /images/20220517/53e33b0c6551427594c427858a88b035.png