基本信息
源码名称：Android应用源码小说阅读器(可以语音播报)
源码大小：17.06M
文件格式：.zip
开发语言：Java
更新时间：2018-07-30
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源码介绍
这是一款小说阅读器项目源码。主要功能有显示小说列表，查看小说，可以语音读小说，可以调节字体、亮度、在语音读书的时候可以自己跳转，方便阅读。UI设计很漂亮，值得借鉴。项目代码不是特别多，而且主文件都有很详细的注释，很便于大家的学习（源码采用GBK编码）。
package com.hck.book.ui;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.io.UnsupportedEncodingException;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.text.DecimalFormat;
import java.util.Vector;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.util.Log;
public class BookPageFactory {
StringBuilder word;
private static final String TAG = "BookPageFactory";
private File book_file = null;
private int m_backColor = 0xffff9e85; // 背景颜色
private Bitmap m_book_bg = null;
private int m_fontSize = 20;
private boolean m_isfirstPage, m_islastPage;
private Vector<String> m_lines = new Vector<String>();
private MappedByteBuffer m_mbBuf = null;// 内存中的图书字符
private int m_mbBufBegin = 0;// 当前页起始位置
private int m_mbBufEnd = 0;// 当前页终点位置
private int m_mbBufLen = 0; // 图书总长度
private String m_strCharsetName = "GBK";
private int m_textColor = Color.rgb(28, 28, 28);
private int marginHeight = 15; // 上下与边缘的距离
private int marginWidth = 15; // 左右与边缘的距离
private int mHeight;
private int mLineCount; // 每页可以显示的行数
private Paint mPaint;
private float mVisibleHeight; // 绘制内容的宽
private float mVisibleWidth; // 绘制内容的宽
private int mWidth;
public BookPageFactory(int w, int h) {
mWidth = w;
mHeight = h;
mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);// 画笔
mPaint.setTextAlign(Align.LEFT);// 做对其
mPaint.setTextSize(m_fontSize);// 字体大小
mPaint.setColor(m_textColor);// 字体颜色
mVisibleWidth = mWidth - marginWidth * 2;
mVisibleHeight = mHeight - marginHeight * 2;
mLineCount = (int) (mVisibleHeight / m_fontSize) - 1; // 可显示的行数,-1是因为底部显示进度的位置容易被遮住
}
public int getM_fontSize() {
return m_fontSize;
}
public int getmLineCount() {
return mLineCount;
}
public boolean isfirstPage() {
return m_isfirstPage;
}
public boolean islastPage() {
return m_islastPage;
}
/**
* 向后翻页
*
* @throws IOException
*/
public void nextPage() throws IOException {
if (m_mbBufEnd >= m_mbBufLen) {
m_islastPage = true;
return;
} else
m_islastPage = false;
m_lines.clear();
m_mbBufBegin = m_mbBufEnd;// 下一页页起始位置=当前页结束位置
m_lines = pageDown();
}
public void currentPage() throws IOException {
m_lines.clear();
m_lines = pageDown();
}
public void onDraw(Canvas c) {
word=new StringBuilder();
mPaint.setTextSize(m_fontSize);
mPaint.setColor(m_textColor);
if (m_lines.size() == 0)
m_lines = pageDown();
if (m_lines.size() > 0) {
if (m_book_bg == null)
c.drawColor(m_backColor);
else
c.drawBitmap(m_book_bg, 0, 0, null);
int y = marginHeight;
for (String strLine : m_lines) {
y = m_fontSize;
c.drawText(strLine, marginWidth, y, mPaint);
word.append(strLine);
}
Read.words=word.toString();
word=null;
}
float fPercent = (float) (m_mbBufBegin * 1.0 / m_mbBufLen);
DecimalFormat df = new DecimalFormat("#0.0");
String strPercent = df.format(fPercent * 100) "%";
int nPercentWidth = (int) mPaint.measureText("999.9%") 1;
c.drawText(strPercent, mWidth - nPercentWidth, mHeight - 5, mPaint);
}
/**
*
* @param strFilePath
* @param begin
* 表示书签记录的位置，读取书签时，将begin值给m_mbBufEnd，在读取nextpage，及成功读取到了书签
* 记录时将m_mbBufBegin开始位置作为书签记录
*
* @throws IOException
*/
@SuppressWarnings("resource")
public void openbook(String strFilePath, int begin) throws IOException {
book_file = new File(strFilePath);
long lLen = book_file.length();
m_mbBufLen = (int) lLen;
m_mbBuf = new RandomAccessFile(book_file, "r").getChannel().map(
FileChannel.MapMode.READ_ONLY, 0, lLen);
Log.d(TAG, "total lenth：" m_mbBufLen);
// 设置已读进度
if (begin >= 0) {
m_mbBufBegin = begin;
m_mbBufEnd = begin;
} else {
}
}
/**
* 画指定页的下一页
*
* @return 下一页的内容 Vector<String>
*/
protected Vector<String> pageDown() {
mPaint.setTextSize(m_fontSize);
mPaint.setColor(m_textColor);
String strParagraph = "";
Vector<String> lines = new Vector<String>();
while (lines.size() < mLineCount && m_mbBufEnd < m_mbBufLen) {
byte[] paraBuf = readParagraphForward(m_mbBufEnd);
m_mbBufEnd = paraBuf.length;// 每次读取后，记录结束点位置，该位置是段落结束位置
try {
strParagraph = new String(paraBuf, m_strCharsetName);// 转换成制定GBK编码
} catch (UnsupportedEncodingException e) {
Log.e(TAG, "pageDown->转换编码失败", e);
}
String strReturn = "";
// 替换掉回车换行符
if (strParagraph.indexOf("\r\n") != -1) {
strReturn = "\r\n";
strParagraph = strParagraph.replaceAll("\r\n", "");
} else if (strParagraph.indexOf("\n") != -1) {
strReturn = "\n";
strParagraph = strParagraph.replaceAll("\n", "");
}
if (strParagraph.length() == 0) {
lines.add(strParagraph);
}
while (strParagraph.length() > 0) {
// 画一行文字
int nSize = mPaint.breakText(strParagraph, true, mVisibleWidth,
null);
lines.add(strParagraph.substring(0, nSize));
strParagraph = strParagraph.substring(nSize);// 得到剩余的文字
// 超出最大行数则不再画
if (lines.size() >= mLineCount) {
break;
}
}
// 如果该页最后一段只显示了一部分，则从新定位结束点位置
if (strParagraph.length() != 0) {
try {
m_mbBufEnd -= (strParagraph strReturn)
.getBytes(m_strCharsetName).length;
} catch (UnsupportedEncodingException e) {
Log.e(TAG, "pageDown->记录结束点位置失败", e);
}
}
}
return lines;
}
/**
* 得到上上页的结束位置
*/
protected void pageUp() {
if (m_mbBufBegin < 0)
m_mbBufBegin = 0;
Vector<String> lines = new Vector<String>();
String strParagraph = "";
while (lines.size() < mLineCount && m_mbBufBegin > 0) {
Vector<String> paraLines = new Vector<String>();
byte[] paraBuf = readParagraphBack(m_mbBufBegin);
m_mbBufBegin -= paraBuf.length;// 每次读取一段后,记录开始点位置,是段首开始的位置
try {
strParagraph = new String(paraBuf, m_strCharsetName);
} catch (UnsupportedEncodingException e) {
Log.e(TAG, "pageUp->转换编码失败", e);
}
strParagraph = strParagraph.replaceAll("\r\n", "");
strParagraph = strParagraph.replaceAll("\n", "");
// 如果是空白行，直接添加
if (strParagraph.length() == 0) {
paraLines.add(strParagraph);
}
while (strParagraph.length() > 0) {
// 画一行文字
int nSize = mPaint.breakText(strParagraph, true, mVisibleWidth,
null);
paraLines.add(strParagraph.substring(0, nSize));
strParagraph = strParagraph.substring(nSize);
}
lines.addAll(0, paraLines);
}
while (lines.size() > mLineCount) {
try {
m_mbBufBegin = lines.get(0).getBytes(m_strCharsetName).length;
lines.remove(0);
} catch (UnsupportedEncodingException e) {
Log.e(TAG, "pageUp->记录起始点位置失败", e);
}
}
m_mbBufEnd = m_mbBufBegin;// 上上一页的结束点等于上一页的起始点
return;
}
/**
* 向前翻页
*
* @throws IOException
*/
protected void prePage() throws IOException {
if (m_mbBufBegin <= 0) {
m_mbBufBegin = 0;
m_isfirstPage = true;
return;
} else
m_isfirstPage = false;
m_lines.clear();
pageUp();
m_lines = pageDown();
}
/**
* 读取指定位置的上一个段落
*
* @param nFromPos
* @return byte[]
*/
protected byte[] readParagraphBack(int nFromPos) {
int nEnd = nFromPos;
int i;
byte b0, b1;
if (m_strCharsetName.equals("UTF-16LE")) {
i = nEnd - 2;
while (i > 0) {
b0 = m_mbBuf.get(i);
b1 = m_mbBuf.get(i 1);
if (b0 == 0x0a && b1 == 0x00 && i != nEnd - 2) {
i = 2;
break;
}
i--;
}
} else if (m_strCharsetName.equals("UTF-16BE")) {
i = nEnd - 2;
while (i > 0) {
b0 = m_mbBuf.get(i);
b1 = m_mbBuf.get(i 1);
if (b0 == 0x00 && b1 == 0x0a && i != nEnd - 2) {
i = 2;
break;
}
i--;
}
} else {
i = nEnd - 1;
while (i > 0) {
b0 = m_mbBuf.get(i);
if (b0 == 0x0a && i != nEnd - 1) {// 0x0a表示换行符
i ;
break;
}
i--;
}
}
if (i < 0)
i = 0;
int nParaSize = nEnd - i;
int j;
byte[] buf = new byte[nParaSize];
for (j = 0; j < nParaSize; j ) {
buf[j] = m_mbBuf.get(i j);
}
return buf;
}
/**
* 读取指定位置的下一个段落
*
* @param nFromPos
* @return byte[]
*/
protected byte[] readParagraphForward(int nFromPos) {
int nStart = nFromPos;
int i = nStart;
byte b0, b1;
// 根据编码格式判断换行
if (m_strCharsetName.equals("UTF-16LE")) {
while (i < m_mbBufLen - 1) {
b0 = m_mbBuf.get(i );
b1 = m_mbBuf.get(i );
if (b0 == 0x0a && b1 == 0x00) {
break;
}
}
} else if (m_strCharsetName.equals("UTF-16BE")) {
while (i < m_mbBufLen - 1) {
b0 = m_mbBuf.get(i );
b1 = m_mbBuf.get(i );
if (b0 == 0x00 && b1 == 0x0a) {
break;
}
}
} else {
while (i < m_mbBufLen) {
b0 = m_mbBuf.get(i );
if (b0 == 0x0a) {
break;
}
}
}
int nParaSize = i - nStart;
byte[] buf = new byte[nParaSize];
for (i = 0; i < nParaSize; i ) {
buf[i] = m_mbBuf.get(nFromPos i);
}
return buf;
}
public void setBgBitmap(Bitmap BG) {
m_book_bg = BG;
}
public void setM_fontSize(int m_fontSize) {
this.m_fontSize = m_fontSize;
mLineCount = (int) (mVisibleHeight / m_fontSize) - 1;
}
// 设置页面起始点
public void setM_mbBufBegin(int m_mbBufBegin) {
this.m_mbBufBegin = m_mbBufBegin;
}
// 设置页面结束点
public void setM_mbBufEnd(int m_mbBufEnd) {
this.m_mbBufEnd = m_mbBufEnd;
}
public int getM_mbBufBegin() {
return m_mbBufBegin;
}
public String getFirstLineText() {
return m_lines.size() > 0 ? m_lines.get(0) : "";
}
public int getM_textColor() {
return m_textColor;
}
public void setM_textColor(int m_textColor) {
this.m_textColor = m_textColor;
}
public int getM_mbBufLen() {
return m_mbBufLen;
}
public int getM_mbBufEnd() {
return m_mbBufEnd;
}
}