帮我随便写一个Androidstudio音乐播放界面代码

好的，以下是一个简单的 Android Studio 音乐播放界面的代码示例：

public class MainActivity extends AppCompatActivity {
    
    private MediaPlayer mediaPlayer;
    private Button playButton;
    private SeekBar seekBar;
    private TextView currentTimeTextView, totalTimeTextView;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        // 初始化界面元素
        playButton = findViewById(R.id.play_button);
        seekBar = findViewById(R.id.seek_bar);
        currentTimeTextView = findViewById(R.id.current_time_text_view);
        totalTimeTextView = findViewById(R.id.total_time_text_view);
        
        // 创建 MediaPlayer 对象
        mediaPlayer = MediaPlayer.create(this, R.raw.music_file);
        
        // 设置播放按钮的点击事件
        playButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mediaPlayer.isPlaying()) {
                    mediaPlayer.pause();
                    playButton.setText("播放");
                } else {
                    mediaPlayer.start();
                    playButton.setText("暂停");
                }
            }
        });
        
        // 设置 SeekBar 的拖动事件
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                if (fromUser) {
                    mediaPlayer.seekTo(progress);
                }
            }
            
            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
                // do nothing
            }
            
            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                // do nothing
            }
        });
        
        // 设置 MediaPlayer 的播放完成事件
        mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                playButton.setText("播放");
                seekBar.setProgress(0);
            }
        });
        
        // 更新播放进度和时间显示
        new Thread(new Runnable() {
            @Override
            public void run() {
                while (true) {
                    if (mediaPlayer != null) {
                        final int currentPosition = mediaPlayer.getCurrentPosition();
                        final int totalDuration = mediaPlayer.getDuration();
                        
                        // 更新 SeekBar 和时间显示
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                seekBar.setMax(totalDuration);
                                seekBar.setProgress(currentPosition);
                                currentTimeTextView.setText(formatTime(currentPosition));
                                totalTimeTextView.setText(formatTime(totalDuration));
                            }
                        });
                    }
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();
    }
    
    // 格式化时间显示
    private String formatTime(int time) {
        int seconds = time / 1000;
        int minutes = seconds / 60;
        seconds %= 60;
        return String.format("%02d:%02d", minutes, seconds);
    }
    
    // 释放 MediaPlayer 资源
    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (mediaPlayer != null) {
            mediaPlayer.release();
            mediaPlayer = null;
        }
    }
}

注意：这只是一个简单的示例代码，仅供参考。实际上，一个完整的音乐播放器可能需要更多的功能和优化。