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;
    }
}

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");
        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)));
        }
    }
}

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;
    }
}

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>

 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();
        }