Android 实现歌曲播放时歌词同步显示

我们需要读取以上歌词文件的每一行转换成成一个个歌词实体：

[java] public class LyricObject {
    public int begintime; // 开始时间
    public int endtime; // 结束时间
    public int timeline; // 单句歌词用时
    public String lrc; // 单句歌词
}

public class LyricObject {
    public int begintime; // 开始时间
    public int endtime; // 结束时间
    public int timeline; // 单句歌词用时
    public String lrc; // 单句歌词
}
可根据当前播放器的播放进度与每句歌词的开始时间，得到当前屏幕中央高亮显示的那句歌词。在UI线程中另起线程，通过回调函数 onDraw() 每隔100ms重新绘制屏幕，实现歌词平滑滚动的动画效果。MainActivity代码如下：

[java]   import java.io.IOException;
import android.app.Activity;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;

public class MainActivity extends Activity {
    /** Called when the activity is first created. */
    private LyricView lyricView;
    private MediaPlayer mediaPlayer;
    private Button button;
    private SeekBar seekBar;
    private String mp3Path;
    private int INTERVAL=45;//歌词每行的间隔

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        // getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.main);

        mp3Path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/LyricSync/1.mp3";

        lyricView = (LyricView) findViewById(R.id.mylrc);
        mediaPlayer = new MediaPlayer();
        // this.requestWindowFeature(Window.FEATURE_NO_TITLE);

        ResetMusic(mp3Path);
        SerchLrc();
        lyricView.SetTextSize();

        button = (Button) findViewById(R.id.button);
        button.setText("播放");

        seekBar = (SeekBar) findViewById(R.id.seekbarmusic);
        seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
                // TODO Auto-generated method stub
                if (fromUser) {
                    mediaPlayer.seekTo(progress);
                    lyricView.setOffsetY(220 - lyricView.SelectIndex(progress)
                            * (lyricView.getSIZEWORD() + INTERVAL-1));

                }
            }
        });

        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                if (mediaPlayer.isPlaying()) {
                    button.setText("播放");

补充：移动开发 , Android ,