java - 如何在android中读取Epub文件的所有内容？

Question

我想阅读所有目录的所有内容。
你能告诉我如何阅读目录(toc)中的所有章节吗？
请发布修改后的代码以便我们可以阅读所有内容或发布一些东西以便我可以阅读内容.

 public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       AssetManager assetsmanger=getAssets();

        try {                                   
             // find InputStream for book                   
                InputStream  epubInputStream=assetsmanger.open("books/INCOME-TAX-ACT-1961.epub");

              // Load Book from inputStream
              Book book = (new EpubReader()).readEpub(epubInputStream);

            // Log the book's authors                         
              Log.i("epublib", "author(s): " +book.getMetadata().getAuthors());

                // Log the book's title  
             Log.i("epublib", "title: " + book.getTitle());

        String data=new String (book.getContents().get(3).getData()); 
         String k=data;
                web1=(WebView)findViewById(R.id.webView1);    
//                txt1=(TextView) findViewById(R.id.textView1);
//                txt1.setText(k);
            web1.loadData(k," text/html", "utf8");

        Bitmap coverImage=BitmapFactory.decodeStream(book.getCoverImage().getInputStream());

         Log.i("epublib" , "Coverimage is " + coverImage.getWidth() + " by "
                  + coverImage.getHeight() + " pixels");
        // Log the tale of contents
         logTableOfContents(book.getTableOfContents().getTocReferences(), 0);

    //     list=(ExpandableListView)findViewById(R.id.expandableListView1);


//      img1=(ImageView)findViewById(R.id.imageView1);    
//            img1.setImageBitmap(coverImage);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                 Log.e("epublib", e.getMessage());
            }
            catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

    private void logTableOfContents(List<TOCReference> tocReferences, int depth) {
        // TODO Auto-generated method stub

        if(tocReferences== null ){
            return;
        }
        for(TOCReference tocReference:tocReferences){
            StringBuilder tocstring=new StringBuilder();
            for(int i=0;i<depth;i++)
            {
                tocstring.append("\t");

            }
            HashMap<String, String> map = new HashMap<String, String>();


        String k=   tocstring.append(tocReference.getTitle()).toString();
        map.put("TOC",k);
        ArrayList<HashMap<String, String>> list1 = new ArrayList<HashMap<String, String>>();
        list1.add(map);
        String t=k;
             Log.i("epublib", tocstring.toString());
             logTableOfContents(tocReference.getChildren(), depth + 1);

        }           
    }                                     
    }

Answer 1

如果您的 Assets 中有必要的库和sampleepubfile.epub，请使用此代码...

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.List;

import nl.siegmann.epublib.domain.Book;
import nl.siegmann.epublib.domain.TOCReference;
import nl.siegmann.epublib.epub.EpubReader;
import android.app.Activity;
import android.content.res.AssetManager;
import android.os.Bundle;
import android.text.Html;
import android.util.Log;
import android.webkit.WebView;
public class EPubDemo extends Activity {
    WebView webview;
    String line, line1 = "", finalstr = "";
    int i = 0;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        webview = (WebView) findViewById(R.id.webview);
        AssetManager assetManager = getAssets();
        try {
            // find InputStream for book
            InputStream epubInputStream = assetManager
                    .open("sampleepubfile.epub");

            // Load Book from inputStream
            Book book = (new EpubReader()).readEpub(epubInputStream);

            // Log the book's authors
            Log.i("author", " : " + book.getMetadata().getAuthors());

            // Log the book's title
            Log.i("title", " : " + book.getTitle());

            /* Log the book's coverimage property */
            // Bitmap coverImage =
            // BitmapFactory.decodeStream(book.getCoverImage()
            // .getInputStream());
            // Log.i("epublib", "Coverimage is " + coverImage.getWidth() +
            // " by "
            // + coverImage.getHeight() + " pixels");

            // Log the tale of contents
            logTableOfContents(book.getTableOfContents().getTocReferences(), 0);
        } catch (IOException e) {
            Log.e("epublib exception", e.getMessage());
        }

        String javascrips = "";
        try {
            // InputStream input = getResources().openRawResource(R.raw.lights);
            InputStream input = this.getAssets().open(
                    "poe-fall-of-the-house-of-usher.epub");

            int size;
            size = input.available();
            byte[] buffer = new byte[size];
            input.read(buffer);
            input.close();
            // byte buffer into a string
            javascrips = new String(buffer);
        } catch (IOException e) {
            e.printStackTrace();
        }
        // String html = readFile(is);

        webview.loadDataWithBaseURL("file:///android_asset/", javascrips,
                "application/epub+zip", "UTF-8", null);
    }

    @SuppressWarnings("unused")
    private void logTableOfContents(List<TOCReference> tocReferences, int depth) {
        if (tocReferences == null) {
            return;
        }

        for (TOCReference tocReference : tocReferences) {
            StringBuilder tocString = new StringBuilder();
             for (int i = 0; i < depth; i++) {
             tocString.append("\t");
             }
             tocString.append(tocReference.getTitle());
             Log.i("TOC", tocString.toString());

            try {
                InputStream is = tocReference.getResource().getInputStream();
                BufferedReader r = new BufferedReader(new InputStreamReader(is));

                while ((line = r.readLine()) != null) {
                    // line1 = Html.fromHtml(line).toString();
                    Log.v("line" + i, Html.fromHtml(line).toString());
                    // line1 = (tocString.append(Html.fromHtml(line).toString()+
                    // "\n")).toString();
                    line1 = line1.concat(Html.fromHtml(line).toString());
                }
                finalstr = finalstr.concat("\n").concat(line1);
                // Log.v("Content " + i, finalstr);
                i++;
            } catch (IOException e) {

            }

            logTableOfContents(tocReference.getChildren(), depth + 1);
        }
        webview.loadDataWithBaseURL("", finalstr, "text/html", "UTF-8", "");
    }
}