Android中从SD卡中获取歌词并与歌曲同步

先看看效果图吧，再看代码

转换文件的编码格式

 package com.xm;

 import java.io.BufferedInputStream;
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;

 /**
  * 转换文件的编码格式
  *
  * @author yangchuxi
  *
  */
 public class ConvertFileCode {
     public String converfile(String filepath) {
         File file = new File(filepath);
         FileInputStream fis = null;
         BufferedInputStream bis = null;
         BufferedReader reader = null;
         String text = "";
         try {
             fis = new FileInputStream(file);
             bis = new BufferedInputStream(fis);
             bis.mark(4);
             byte[] first3bytes = new byte[3];
             // System.out.println("");
             // 找到文档的前三个字节并自动判断文档类型。
             bis.read(first3bytes);
             bis.reset();
             if (first3bytes[0] == (byte) 0xEF && first3bytes[1] == (byte) 0xBB && first3bytes[2] == (byte) 0xBF) {// utf-8

                 reader = new BufferedReader(new InputStreamReader(bis, "utf-8"));

             } else if (first3bytes[0] == (byte) 0xFF && first3bytes[1] == (byte) 0xFE) {

                 reader = new BufferedReader(new InputStreamReader(bis, "unicode"));
             } else if (first3bytes[0] == (byte) 0xFE && first3bytes[1] == (byte) 0xFF) {

                 reader = new BufferedReader(new InputStreamReader(bis, "utf-16be"));
             } else if (first3bytes[0] == (byte) 0xFF && first3bytes[1] == (byte) 0xFF) {

                 reader = new BufferedReader(new InputStreamReader(bis, "utf-16le"));
             } else {

                 reader = new BufferedReader(new InputStreamReader(bis, "GBK"));
             }
             String str = reader.readLine();

             while (str != null) {
 //                text = text + str + "/n";
 //                str = reader.readLine();
                 text = text + str + "/n";
                 str = reader.readLine();
                 if(str==null){
                     break;
                 }
                 System.out.println(str);
             }
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
             if (fis != null) {
                 try {
                     fis.close();
                 } catch (IOException e) {
                     e.printStackTrace();
                 }
             }
             if (bis != null) {
                 try {
                     bis.close();
                 } catch (IOException e) {
                     e.printStackTrace();
                 }
             }
         }
         return text;
     }
 }

代码

读取歌词文件

 package com.xm;
 /**
  * 读取歌词文件
  */
 import java.util.ArrayList;
 import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;

 public class LrcHandle {
     @SuppressWarnings("unchecked")
     private List mWords = new ArrayList();

     @SuppressWarnings("unchecked")
     private List mTimeList = new ArrayList();

     //处理歌词文件
     @SuppressWarnings("unchecked")
     public void readLRC(String path) {
         ConvertFileCode c=new ConvertFileCode();
         String a =c.converfile(path);
         String[] lists = a.split("\\s"+"\n"+"|/n");
         if(mWords!=null){
             for(String s:lists){
                  addTimeToList(s);
                  if ((s.indexOf("[ar:") != -1) || (s.indexOf("[ti:") != -1)
                          || (s.indexOf("[by:") != -1 || (s.indexOf("[offset:") != -1))) {
                      continue;
                  } else {
                      String ss = s.substring(s.indexOf("["), s.indexOf("]") + 1);
                      s = s.replace(ss, "");
                  }
                  mWords.add(s);
             }
         }else{
             mWords.add("没有读取到歌词");
         }

 //        ConvertFileCode c=new ConvertFileCode();
 //        String a=c.converfile("/sdcard/xn.lrc");
 //        File file = new File(path);
 //        try {
 //            FileInputStream fileInputStream = new FileInputStream(file);
 //            InputStreamReader inputStreamReader = new InputStreamReader(
 //                    fileInputStream);
 //            BufferedReader bufferedReader = new BufferedReader(
 //                    inputStreamReader);
 //            String s = "";
 //            while ((s = bufferedReader.readLine()) != null) {
 //                addTimeToList(s);
 //                if ((s.indexOf("[ar:") != -1) || (s.indexOf("[ti:") != -1)
 //                        || (s.indexOf("[by:") != -1)) {
 //                    s = s.substring(s.indexOf(":") + 1, s.indexOf("]"));
 //                } else {
 //                    String ss = s.substring(s.indexOf("["), s.indexOf("]") + 1);
 //                    s = s.replace(ss, "");
 //                }
 //                mWords.add(s);
 //            }
 //            bufferedReader.close();
 //            inputStreamReader.close();
 //            fileInputStream.close();
 //        } catch (FileNotFoundException e) {
 //            e.printStackTrace();
 //            mWords.add("没有歌词，快去下载");
 //        } catch (IOException e) {
 //            e.printStackTrace();
 //            mWords.add("没有读取到歌词");
 //        }
     }
    @SuppressWarnings("unchecked")
    public List getWords() {
         return mWords;
    }

     @SuppressWarnings("unchecked")
     public List getTime() {
         return mTimeList;
     }

     // 分离出时间
     private int timeHandler(String string) {
        string = string.replace(".", ":");
        String timeData[] = string.split(":");
        // 分离出分、秒并转换为整型
         int minute = Integer.parseInt(timeData[0]);
         int second = Integer.parseInt(timeData[1]);
         int millisecond = Integer.parseInt(timeData[2]);
         // 计算上一行与下一行的时间转换为毫秒数
         int currentTime = (minute * 60 + second) * 1000 + millisecond * 10;
         return currentTime;
     }

    @SuppressWarnings({ "unchecked", "unused" })
    private void addTimeToList(String string) {
         Matcher matcher = Pattern.compile(
                 "\\[\\d{1,2}:\\d{1,2}([\\.:]\\d{1,2})?\\]").matcher(string);
         if (matcher.find()) {
             String str = matcher.group();
             mTimeList.add(new LrcHandle().timeHandler(str.substring(1,
                     str.length() - 1)));
         }
     }
 }

代码

实现xml

 package com.xm;

 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;

 import android.content.Context;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.Typeface;
 import android.util.AttributeSet;
 import android.widget.TextView;

 public class WordView extends TextView {
     @SuppressWarnings("unchecked")
     private List mWordsList = new ArrayList();
     private Paint mLoseFocusPaint;
     private Paint mOnFocusePaint;
     private float mX = 0;
     private float mMiddleY = 0;
     private float mY = 0;
     private static final int DY = 50;
     private int mIndex = 0;
     private String name;

     public WordView(Context context) throws IOException {
         super(context);
         init();
     }

     public WordView(Context context, AttributeSet attrs) throws IOException {
         super(context, attrs);
         init();
     }

     public WordView(Context context, AttributeSet attrs, int defStyle)throws IOException {
         super(context, attrs, defStyle);
         init();
     }

     @Override
     protected void onDraw(Canvas canvas) {
         if(mWordsList.size()==0){
             LrcHandle lrcHandler = new LrcHandle();
             lrcHandler.readLRC("/sdcard/"+name);
             mWordsList = lrcHandler.getWords();
         }
         super.onDraw(canvas);
         canvas.drawColor(Color.BLACK);
         Paint p = mLoseFocusPaint;
         p.setTextAlign(Paint.Align.CENTER);
         Paint p2 = mOnFocusePaint;
         p2.setTextAlign(Paint.Align.CENTER);
         canvas.drawText((String) mWordsList.get(mIndex), mX, mMiddleY, p2);
         int alphaValue = 25;
         float tempY = mMiddleY;
         for (int i = mIndex - 1; i >= 0; i--) {
             tempY -= DY;
             if (tempY < 0) {
                 break;
             }
             p.setColor(Color.argb(255 - alphaValue, 245, 245, 245));
             canvas.drawText((String) mWordsList.get(i), mX, tempY, p);
             alphaValue += 25;
         }
         alphaValue = 25;
         tempY = mMiddleY;
         for (int i = mIndex + 1, len = mWordsList.size(); i < len; i++) {
             tempY += DY;
             if (tempY > mY) {
                 break;
             }
             p.setColor(Color.argb(255 - alphaValue, 245, 245, 245));
             canvas.drawText((String) mWordsList.get(i), mX, tempY, p);
             alphaValue += 25;
         }
         mIndex++;
     }

     @Override
     protected void onSizeChanged(int w, int h, int ow, int oh) {
         super.onSizeChanged(w, h, ow, oh);
         mX = w * 0.5f;
         mY = h;
         mMiddleY = h * 0.3f;
     }

 //    @SuppressLint("SdCardPath")
     private void init() throws IOException {
         setFocusable(true);
 //        LrcHandle lrcHandler = new LrcHandle();
 //        lrcHandler.readLRC("/sdcard/wwyx.lrc");
 //        mWordsList = lrcHandler.getWords();

         mLoseFocusPaint = new Paint();
         mLoseFocusPaint.setAntiAlias(true);
         mLoseFocusPaint.setTextSize(22);
         mLoseFocusPaint.setColor(Color.WHITE);
         mLoseFocusPaint.setTypeface(Typeface.SERIF);

         mOnFocusePaint = new Paint();
         mOnFocusePaint.setAntiAlias(true);
         mOnFocusePaint.setColor(Color.YELLOW);
         mOnFocusePaint.setTextSize(30);
         mOnFocusePaint.setTypeface(Typeface.SANS_SERIF);
     }

     public String getName() {
         return name;
     }

     public void setName(String name) {
         this.name = name;
     }
 }

代码

xml配置文件

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="vertical"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     android:background="#FFFFFF"
     >
     <TableLayout
         android:orientation="vertical"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:background="#FFFFFF"
         >
         <TableRow>
             <ImageButton
                 android:id="@+id/ibgc1"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:src="@drawable/hh"
                 android:background="#00000000"
                 android:layout_marginLeft="10px"
                 android:layout_marginRight="98px"
             />
         </TableRow>
     </TableLayout>
      <TableLayout
         android:orientation="vertical"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         >
         <TableRow>
             <com.xm.WordView
                 android:id="@+id/text"
                 android:layout_width="330px"
                 android:layout_height="355px"
             />
         </TableRow>
     </TableLayout>
     <TableLayout
         android:orientation="horizontal"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:background="#FFFFFF"
         android:layout_alignParentBottom="true"
         android:layout_marginTop="10px"
         >
         <TableRow>
             <Button
                 android:id="@+id/bt10"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:text="开始"
                 android:background="#FFFFFF"
                 android:layout_marginLeft="30px"
             />
             <Button
                 android:id="@+id/bt11"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:text="暂停"
                 android:background="#FFFFFF"
                 android:layout_marginLeft="180px"
             />
         </TableRow>
     </TableLayout>
 </LinearLayout>

xml

Activity类

 private WordView mWordView;
     private List mTimeList;
     private MediaPlayer mPlayer;
     private boolean isPause;
     private boolean isStartTrackingTouch;
 final Handler handler = new Handler();
         bt10 = (Button) findViewById(R.id.bt10);
         bt10.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 mPlayer.start();
                 isPause = false;
                 new Thread(new Runnable() {
                     int i = 0;
                     @Override
                     public void run() {
                         while (mPlayer.isPlaying()) {
                             handler.post(new Runnable() {
                                 @Override
                                 public void run() {
                                     mWordView.invalidate();
                                 }
                             });
                             try {
                                 int a = Integer.parseInt(String.valueOf(mTimeList
                                         .get(i + 1)));
                                 int b = Integer.parseInt(String.valueOf(mTimeList
                                         .get(i)));
                                 Thread.sleep(a - b);
                             } catch (Exception e) {
                             }
                             i++;
                             if (i == mTimeList.size() - 1) {
                                 mPlayer.stop();
                                 break;
                             }
                         }
                     }
                 }).start();
             }
         });
         bt11 = (Button) findViewById(R.id.bt11);
         bt11.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 mPlayer.pause();
                 isPause = true;
             }
         });
         LrcHandle lrcHandler = new LrcHandle();
         String name1 = getIntent().getStringExtra("name");
         String str=name1.substring(0,name1.indexOf('.'));
         String str1=str+".lrc";
         String name2 = getIntent().getStringExtra("name");
         mWordView = (WordView) findViewById(R.id.text);
         mWordView.setName(str1);
         mPlayer = new MediaPlayer();
         mPlayer.reset();
         try {
             lrcHandler.readLRC("/sdcard/"+str1);
             mTimeList = lrcHandler.getTime();
             mPlayer.setDataSource("/sdcard/"+name2);
             mPlayer.prepare();
         } catch (IOException e) {
             e.printStackTrace();
         } catch (IllegalArgumentException e) {
             e.printStackTrace();
         } catch (SecurityException e) {
             e.printStackTrace();
         } catch (IllegalStateException e) {
             e.printStackTrace();
         }

代码