android 使用epublib開源框架解析epub檔案（章節內容、書籍選單）
阿新 • • 發佈：2019-02-20
前期準備
jsoup(可以可把html標籤，解析為物件):
進入正題
如果你是吧 .equb 格式的檔案放到 assets 檔案下，你可以這樣獲取book物件。
MainActivity.java
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.v7.app 佈局： R.layout.activity_main :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/image"
android:layout_width="100dp"
android:layout_height="150dp"
android:src="@mipmap/ic_launcher"/>
<TextView
android:id="@+id/tv_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="內容描述dddd"/>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
adapter的item佈局：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#fff"
android:orientation="vertical">
<TextView
android:id="@+id/title"
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="#fff"
android:gravity="center_vertical"
android:paddingLeft="10dp"
android:text="ddd"/>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#eee"/>
</LinearLayout>EpubBean.java
public class EpubBean {
public String tilte;
public String href;
}
ChapterDetailActivity.java
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.webkit.WebView;
import com.example.epubdaemon.utils.StringUtils;
import java.io.IOException;
import java.io.InputStream;
import butterknife.BindView;
import butterknife.ButterKnife;
import nl.siegmann.epublib.domain.Book;
import nl.siegmann.epublib.domain.Resource;
import nl.siegmann.epublib.epub.EpubReader;
public class ChapterDetailActivity extends AppCompatActivity {
private static final String TAG = "ChapterDetailActivity";
@BindView(R.id.webView)
WebView mWebView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chapter_detail);
ButterKnife.bind(this);
String href = getIntent().getStringExtra("href");
Log.i(TAG, "onCreate: href=" + href);
try {
EpubReader reader = new EpubReader();
InputStream in = getAssets().open("176116.epub");
Book book = reader.readEpub(in);
Resource byHref = book.getResources().getByHref(href);
byte[] data = byHref.getData(); //和 resource.getInputStream() 返回的都是html格式的文章內容，只不過讀取方式不一樣
String strHtml1 = StringUtils.bytes2Hex(data);
//Log.i(TAG, "initView: strHtml1111= " + strHtml1);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadDataWithBaseURL(null, strHtml1, "text/html", "utf-8", null);
} catch (IOException e) {
e.printStackTrace();
}
}
}
佈局：R.layout.activity_chapter_detail
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent"></WebView>
</LinearLayout>
StringUtils.java
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
/**
* Created by yuanpk on 2018/4/26 8:43
* <p>
* Description:TODO
*/
public class StringUtils {
public static String convertStreamToString(InputStream is) {
/*
* To convert the InputStream to String we use the BufferedReader.readLine()
* method. We iterate until the BufferedReader return null which means
* there's no more data to read. Each line will appended to a StringBuilder
* and returned as String.
*/
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
public static String bytes2Hex(byte[] bs) {
if (bs == null || bs.length <= 0) {
return null;
}
Charset charset = Charset.defaultCharset();
ByteBuffer buf = ByteBuffer.wrap(bs);
CharBuffer cBuf = charset.decode(buf);
return cBuf.toString();
}
}
最後，176116.epub 的這個檔案和相應工具類就不在列出了，可以到下面的 “原始碼下載” 中去下載。
原始碼下載
參考部落格：