首先实现这种效果有两种方式：

1.自定义View里重载onDraw方法，自己绘制歌词

2.用ScrollView实现

第一种方式比较精确，但要支持滑动之后跳转播放的话难度很大，所以我选择第二种，自定义ScrollView。

一.自定义LycicView extends ScrollView

里面包括一个空白布局，高度是LycicView的一半，再是一个布局存放歌词的，最后是一个空白布局高度是LycicView的一半。

这里动态的向第二个布局里面添加了显示歌词的TextView,并利用ViewTreeObserver得到每个textview的高度，方便知道每个textview歌词所要滑动到的高度。

public class LycicView extends ScrollView { LinearLayout rootView;//父布局 LinearLayout lycicList;//垂直布局 ArrayList lyricItems = new ArrayList();//每项的歌词集合  ArrayList lyricTextList = new ArrayList();//每行歌词文本集合，建议先去看看手机音乐里的歌词格式和内容 ArrayList lyricTimeList = new ArrayList();//每行歌词所对应的时间集合 ArrayList lyricItemHeights;//每行歌词TextView所要显示的高度  int height;//控件高度 int width;//控件宽度 int prevSelected = 0;//前一个选择的歌词所在的item   public LycicView(Context context) { super(context); init(); }  public LycicView(Context context, AttributeSet attrs) { super(context, attrs); init(); }  public LycicView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); init(); } private void init(){ rootView = new LinearLayout(getContext()); rootView.setOrientation(LinearLayout.VERTICAL); //创建视图树，会在onLayout执行后立即得到正确的高度等参数 ViewTreeObserver vto = rootView.getViewTreeObserver(); vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void onGlobalLayout() { height = LycicView.this.getHeight(); width = LycicView.this.getWidth();  refreshRootView();  } }); addView(rootView);//把布局加进去 }  /** * */ void refreshRootView(){ rootView.removeAllViews();//刷新，先把之前包含的所有的view清除 //创建两个空白view LinearLayout blank1 = new LinearLayout(getContext()); LinearLayout blank2 = new LinearLayout(getContext()); //高度平分 LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(width,height/2); rootView.addView(blank1,params); if(lycicList !=null){ rootView.addView(lycicList);//加入一个歌词显示布局 rootView.addView(blank2,params); }  }  /** *设置歌词, */ void refreshLyicList(){ if(lycicList == null){ lycicList = new LinearLayout(getContext()); lycicList.setOrientation(LinearLayout.VERTICAL); //刷新，重新添加 lycicList.removeAllViews(); lyricItems.clear(); lyricItemHeights = new ArrayList(); prevSelected = 0; //为每行歌词创建一个TextView for(int i = 0;i=16 lyricItemHeights.add(index,textView.getHeight());//将高度添加到对应的item位置 } }); lycicList.addView(textView); lyricItems.add(index,textView); } } } /** * 滚动到index位置 */ public void scrollToIndex(int index){ if(index < 0){ scrollTo(0,0); } //计算index对应的textview的高度 if(index < lyricTextList.size()){ int sum = 0; for(int i = 0;i<=index-1;i++){ sum+=lyricItemHeights.get(i); } //加上index这行高度的一半 sum+=lyricItemHeights.get(index)/2; scrollTo(0,sum); } }  /** * 歌词一直滑动，小于歌词总长度 * @param length * @return */  int getIndex(int length){ int index = 0; int sum = 0; while(sum <= length){ sum+=lyricItemHeights.get(index); index++; } //从1开始，所以得到的是总item，脚标就得减一 return index - 1; }  /** * 设置选择的index，选中的颜色 * @param index */ void setSelected(int index){ //如果和之前选的一样就不变 if(index == prevSelected){ return; } for(int i = 0;i textList,ArrayList timeList){ //因为你从歌词lrc里面可以看出，每行歌词前面都对应有时间，所以两者必须相等 if(textList.size() != timeList.size()){ throw new IllegalArgumentException(); } this.lyricTextList = textList; this.lyricTimeList = timeList;  refreshLyicList(); }  @Override protected void onScrollChanged(int l, int t, int oldl, int oldt) { super.onScrollChanged(l, t, oldl, oldt); //滑动时，不往回弹，滑到哪就定位到哪 setSelected(getIndex(t)); if(listener != null){ listener.onLyricScrollChange(getIndex(t),getIndex(oldt)); } } OnLyricScrollChangeListener listener; public void setOnLyricScrollChangeListener(OnLyricScrollChangeListener l){ this.listener = l; }  /** * 向外部提供接口 */ public interface OnLyricScrollChangeListener{ void onLyricScrollChange(int index,int oldindex); }}

二..MainActivity中的布局

         

具体实现代码如下:

public class MainActivity extends AppCompatActivity {  LycicView view; EditText editText; Button btn; Handler handler = new Handler(new Handler.Callback() { @Override public boolean handleMessage(Message msg) { if(msg.what == 1){  if(lrc_index == list.size()){ handler.removeMessages(1); } lrc_index++;  System.out.println("******"+lrc_index+"*******"); view.scrollToIndex(lrc_index); handler.sendEmptyMessageDelayed(1,4000); } return false; } }); private ArrayList lrcs; private ArrayList list; private ArrayList list1; private int lrc_index;  @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);  initViews();  initEvents(); } private void initViews(){ view = (LycicView) findViewById(R.id.view); editText = (EditText) findViewById(R.id.editText); btn = (Button) findViewById(R.id.button); } private void initEvents(){ InputStream is = getResources().openRawResource(R.raw.eason_tenyears);  // BufferedReader br = new BufferedReader(new InputStreamReader(is)); list = new ArrayList(); list1 = new ArrayList<>(); lrcs = Utils.redLrc(is); for(int i = 0; i< lrcs.size(); i++){ list.add(lrcs.get(i).getLrc()); System.out.println(lrcs.get(i).getLrc()+"====="); list1.add(0l);//lrcs.get(i).getTime() } view.setLyricText(list, list1); view.postDelayed(new Runnable() { @Override public void run() { view.scrollToIndex(0); } },1000);  btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String text = editText.getText().toString(); int index = 0; index = Integer.parseInt(text); view.scrollToIndex(index); } }); view.setOnLyricScrollChangeListener(new LycicView.OnLyricScrollChangeListener() { @Override public void onLyricScrollChange(final int index, int oldindex) { editText.setText(""+index); lrc_index = index; System.out.println("===="+index+"======"); //滚动handle不能放在这，因为，这是滚动监听事件，滚动到下一次，handle又会发送一次消息，出现意想不到的效果 } }); handler.sendEmptyMessageDelayed(1,4000); view.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()){ case MotionEvent.ACTION_DOWN: handler.removeCallbacksAndMessages(null);  System.out.println("取消了"); break; case MotionEvent.ACTION_UP: System.out.println("开始了"); handler.sendEmptyMessageDelayed(1,2000); break; case MotionEvent.ACTION_CANCEL://时间别消耗了 break; } return false; } });  getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE|WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN); } }

其中utils类和LycicMusic是一个工具类和存放Music信息实体类

Utils类

public class Utils { public static ArrayList redLrc(InputStream in) { ArrayList alist = new ArrayList(); //File f = new File(path.replace(".mp3", ".lrc")); try { //FileInputStream fs = new FileInputStream(f); InputStreamReader input = new InputStreamReader(in, "utf-8"); BufferedReader br = new BufferedReader(input); String s = "";  while ((s = br.readLine()) != null) { if (!TextUtils.isEmpty(s)) { String lyLrc = s.replace("[", ""); String[] data_ly = lyLrc.split("]"); if (data_ly.length > 1) { String time = data_ly[0]; String lrc = data_ly[1]; LrcMusic lrcMusic = new LrcMusic(lrcData(time), lrc); alist.add(lrcMusic); } } } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } return alist; } public static int lrcData(String time) { time = time.replace(":", "#"); time = time.replace(".", "#");  String[] mTime = time.split("#");  //[03:31.42] int mtime = Integer.parseInt(mTime[0]); int stime = Integer.parseInt(mTime[1]); int mitime = Integer.parseInt(mTime[2]);  int ctime = (mtime*60+stime)*1000+mitime*10;  return ctime; }}

LrcMusic实体类

public class LrcMusic { private int time; private String lrc;  public LrcMusic() { }  public LrcMusic(int time, String lrc) { this.time = time; this.lrc = lrc; }  public int getTime() { return time; }  public void setTime(int time) { this.time = time; }  public String getLrc() { return lrc; }  public void setLrc(String lrc) { this.lrc = lrc; }}