Android多媒体播放有许多开源的，大多底层都是FFmPeg，那玩意对于我这种新手而言完全是一窍不通啊（有能力的可以看看bilibili，vitamio等等。。）。。所以还是用安卓原生的搞一搞吧，尽管会有很多问题，但是慢慢改进就好~~。

一、布局文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<FrameLayout
    android:id="@+id/player_frame"
    android:layout_width="match_parent"
    android:layout_height="250dp"
    android:background="@drawable/timg">

    <RelativeLayout
        android:id="@+id/player_title"
        android:layout_width="match_parent"
        android:layout_height="30dp"
        android:background="#ABABAB"
        android:visibility="gone">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_marginLeft="8dp"
            android:text="标题" />
    </RelativeLayout>

    <ImageView
        android:id="@+id/player_img2"
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:layout_gravity="center"
        android:src="@drawable/simple_player_center_play" />

    <TextView
        android:id="@+id/player_warn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:text="试听已结束"
        android:textColor="#b00"
        android:textSize="20sp"
        android:visibility="gone" />

    <RelativeLayout
        android:id="@+id/player_control"
        android:layout_width="match_parent"
        android:layout_height="30dp"
        android:layout_gravity="bottom"
        android:background="#ABABAB"
        android:visibility="gone">

        <Button
            android:id="@+id/player_button"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:layout_marginLeft="10dp"
            android:background="@drawable/simple_player_center_play" />

        <TextView
            android:id="@+id/player_right"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_marginRight="8dp"
            android:textColor="#b00"
            android:textSize="14sp" />

        <TextView
            android:id="@+id/player_left"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_toLeftOf="@id/player_right"
            android:textColor="#fdd"
            android:textSize="14sp" />

        <SeekBar
            android:id="@+id/player_seek"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_toLeftOf="@id/player_left"
            android:layout_toRightOf="@id/player_button" />
    </RelativeLayout>
</FrameLayout>


</RelativeLayout>

大致布局

虽然丑 能看就行。。。

二、主要代码

• 安卓要想播放mp3无非就是使用mediaplayer。

 public class MainActivity extends AppCompatActivity {
//播放状态 暂定或正在播放
private boolean isPlay = false;
//播放按钮 屏幕下方控制栏中
private Button mPlayBtn;
//播放进度 屏幕下方控制栏中
private SeekBar mPlaySeekBar;
//点击事件
private MyOnClickListener myOnClickListener = new MyOnClickListener();
//MediaPlayer
private MediaPlayer mMediaPlayer;
//mp3链接  修改成可以播放的就行
private String mP3Url = "随便找一个可以播放的mp3";
private Uri uri = null;
//定时器  由于功能中有付费播放功能，需要定时器来判断
private Timer mTimer = null;
private TimerTask mTimerTask = null;
//互斥变量，防止定时器与SeekBar拖动时进度冲突
private boolean isChanging = false;
//当前播放时间与总时间
private TextView mNowText, mTotalText;
//下方控制栏
private RelativeLayout mControlLayout;
//上方标题栏 显示mp3标题
private RelativeLayout mTitleLayout;
//试看结束提示
private TextView mWarnText;
//刚开始显示播放按钮 屏幕中间的播放按钮
private ImageView mPlayImg;
//整个屏幕
private FrameLayout mFrame;
//控制栏与标题栏是否显示 默认不显示
private boolean isShow = false;
//试看时间 三分钟
private static int TRY_TIME = 3 * 60 * 1000;
//Handler用来控制时间与播放
private Handler mHandler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        super.handleMessage(msg);
        switch (msg.what) {
            case 0:
                //如果大于试看时间 停止播放，控制栏与标题栏隐藏，屏幕不让点击（防止弹出控制栏与标题栏）提示试看结束。
                if (mMediaPlayer.getCurrentPosition() >= TRY_TIME) {
                    if (mMediaPlayer != null && mMediaPlayer.isPlaying()) {
                        mMediaPlayer.stop();
                        mFrame.setEnabled(false);
                        isShow = false;
                        mControlLayout.setVisibility(View.GONE);
                        mTitleLayout.setVisibility(View.GONE);
                        mWarnText.setVisibility(View.VISIBLE);
                    }
                }
                //设置当前播放进度
                mNowText.setText(generateTime(mMediaPlayer.getCurrentPosition()) + "/");
                break;
            case 1:
                //当用户点击屏幕时 标题栏与控制栏显示，并在无操作的三秒后消失。
                mControlLayout.setVisibility(View.GONE);
                mTitleLayout.setVisibility(View.GONE);
                isShow = false;
                break;
        }
    }
};

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mMediaPlayer = new MediaPlayer();

    mPlayBtn = (Button) findViewById(R.id.player_button);
    mPlayBtn.setOnClickListener(myOnClickListener);

    mPlaySeekBar = (SeekBar) findViewById(R.id.player_seek);
    mPlaySeekBar.setOnSeekBarChangeListener(new MySeekbar());

    mNowText = (TextView) findViewById(R.id.player_left);
    mTotalText = (TextView) findViewById(R.id.player_right);

    mWarnText = (TextView) findViewById(R.id.player_warn);

    mControlLayout = (RelativeLayout) findViewById(R.id.player_control);
    mTitleLayout = (RelativeLayout) findViewById(R.id.player_title);

    mPlayImg = (ImageView) findViewById(R.id.player_img2);
    mPlayImg.setOnClickListener(myOnClickListener);

    //点击屏幕 显示底部
    mFrame = (FrameLayout) findViewById(R.id.player_frame);
    mFrame.setOnClickListener(myOnClickListener);

    mPlayImg.setEnabled(false);

    uri = Uri.parse(mP3Url);
    //准备播放
    play(uri);
    //播放完成事件
    mMediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mediaPlayer) {
            //进度归零
            mediaPlayer.seekTo(0);
            //进度条归零
            mPlaySeekBar.setProgress(0);
            //控制栏中的播放按钮显示暂停状态
            mPlayBtn.setBackground(getResources().getDrawable(R.drawable.simple_player_center_play));
            isPlay = false;
            //重置并准备重新播放
            mediaPlayer.reset();
            play(uri);
        }
    });
    //异步准备（准备完成），准备到准备完成期间可以显示进度条之类的东西。
    mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mediaPlayer) {
            mPlaySeekBar.setProgress(0);
            mPlayImg.setEnabled(true);
            mNowText.setText("00:00/");
            mTotalText.setText(generateTime(mMediaPlayer.getDuration() + 1000));
            mPlaySeekBar.setMax(mMediaPlayer.getDuration() + 1000);//设置进度条
        }
    });
}

public void play(Uri uri) {
    try {
        mMediaPlayer.setDataSource(MainActivity.this, uri);
        //采用异步准备，使用prepare方法时，用户进入该界面需要等待几秒，如同死机一般，，，
        mMediaPlayer.prepareAsync();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

 //进度条的进度变化事件
class MySeekbar implements SeekBar.OnSeekBarChangeListener {
    //当进度条变化时触发
    public void onProgressChanged(SeekBar seekBar, int progress,
                                  boolean fromUser) {
    }
    //开始拖拽进度条
    public void onStartTrackingTouch(SeekBar seekBar) {
        isChanging = true;
    }
    //停止拖拽进度条
    public void onStopTrackingTouch(SeekBar seekBar) {
        mMediaPlayer.seekTo(mPlaySeekBar.getProgress());
        mNowText.setText(generateTime(mMediaPlayer.getCurrentPosition()) + "/");
        isChanging = false;
        if (mMediaPlayer.getCurrentPosition() >= TRY_TIME) {
            //大于试看时间  停止播放
            if (mMediaPlayer != null && mMediaPlayer.isPlaying()) {
                mMediaPlayer.stop();
                mFrame.setEnabled(false);
                isShow = false;
                mControlLayout.setVisibility(View.GONE);
                mTitleLayout.setVisibility(View.GONE);
                mWarnText.setVisibility(View.VISIBLE);
            }
        } else {
            mWarnText.setVisibility(View.GONE);
        }
    }
}

@Override
protected void onPause() {
    super.onPause();
    Log.d("tag", "暂停");
}

@Override
protected void onStop() {
    super.onStop();
    Log.d("tag", "停止");
}

class MyOnClickListener implements View.OnClickListener {

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            //当点击屏幕中间的播放按钮时
            case R.id.player_button:
                if (isPlay) {
                    //如果当前正在播放  停止播放 更改控制栏播放状态
                    mPlayImg.setVisibility(View.VISIBLE);
                    if (mMediaPlayer != null && mMediaPlayer.isPlaying()) {
                        mMediaPlayer.pause();    
                        mPlayBtn.setBackground(getResources().getDrawable(R.drawable.simple_player_center_play));
                    }
                } else {
                     //如果当前停止播放  继续播放 更改控制栏状态
                    if (mMediaPlayer != null) {
                        mPlayImg.setVisibility(View.GONE);
                        mPlayBtn.setBackground(getResources().getDrawable(R.drawable.simple_player_center_pause));
                        mMediaPlayer.start();
                        //定时器 更新进度
                        if (mTimer == null) {
                            mTimer = new Timer();
                            mTimerTask = new TimerTask() {
                                @Override
                                public void run() {
                                    if (isChanging == true) {
                                        return;
                                    }
                                    if (isPlay) {
                                        mHandler.sendEmptyMessage(0);
                                        mPlaySeekBar.setProgress(mMediaPlayer.getCurrentPosition());
                                    }
                                }
                            };
                            mTimer.schedule(mTimerTask, 0, 1000);
                        }
                    }
                }
                isPlay = !isPlay;
                break;
            case R.id.player_img2:
                if (mMediaPlayer != null) {
                    mPlayBtn.setBackground(getResources().getDrawable(R.drawable.simple_player_center_pause));
                    mMediaPlayer.start();
                    if (mTimer == null) {
                        mTimer = new Timer();
                        mTimerTask = new TimerTask() {
                            @Override
                            public void run() {
                                if (isChanging == true) {
                                    return;
                                }
                                if (isPlay) {
                                    mHandler.sendEmptyMessage(0);
                                    mPlaySeekBar.setProgress(mMediaPlayer.getCurrentPosition());
                                }
                            }
                        };
                        mTimer.schedule(mTimerTask, 0, 1000);
                    }
                    isPlay = true;
                    mPlayImg.setVisibility(View.GONE);
                }
                break;
            case R.id.player_frame:
                //点击屏幕时 控制 控制栏的显示与隐藏
                if (!isShow) {
                    mControlLayout.setVisibility(View.VISIBLE);
                    mTitleLayout.setVisibility(View.VISIBLE);
                    mHandler.sendEmptyMessageDelayed(1, 3000);
                } else {
                    mHandler.removeMessages(1);
                    mControlLayout.setVisibility(View.GONE);
                    mTitleLayout.setVisibility(View.GONE);
                }
                isShow = !isShow;
                break;
        }
    }
}

//界面销毁时，释放mediaplayer与定时器
@Override
protected void onDestroy() {
    super.onDestroy();
    Log.d("tag", "onDestroy");
    if (mTimer != null) {
        mTimer.cancel();
        mTimer = null;
        mTimerTask = null;
    }
    if (mMediaPlayer != null) {
        if (mMediaPlayer.isPlaying()) {
            mMediaPlayer.stop();
        }
        mMediaPlayer.release();
    }

}

/**
 * 格式化显示的时间
 */
private String generateTime(long time) {
    int totalSeconds = (int) (time / 1000);
    int seconds = totalSeconds % 60;
    int minutes = (totalSeconds / 60) % 60;
    int hours = totalSeconds / 3600;
    return hours > 0 ? String.format("%02d:%02d:%02d", hours, minutes,
            seconds) : String.format("%02d:%02d", minutes, seconds);
}
}

粗略效果

大致效果就出来了，这个只是粗略版的，可以根据自己的需求进行进一步改进。
视频多了个SurfaceView，大致差不多。