在android中渲染epub文件

时间:2011-04-12 19:47:42

标签: android webview epub

我有一个epub文件。我需要解压缩并解析epub文件并在Webview中呈现它。是否有某个分步教程。

3 个答案:

答案 0 :(得分:25)

  1. 访问this site并下载该页面中提到的两个jar文件。
  2. 将这些库导入您的Android项目
  3. 我使用两项活动实施了这项任务:
      1.)EpubReaderActivity - 此活动将显示目录的列表视图
      2.)ContentViewActivity - 这将显示所选章节。
  4. <强> EpubReaderActivity.java

    public class EpubReaderActivity extends ListActivity 
    {
    
    private LayoutInflater inflater;
    private List<RowData> contentDetails;
    public static final String BOOK_NAME = "books/wodehouse.epub";
    
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        inflater = (LayoutInflater) getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
        contentDetails = new ArrayList<RowData>();
        AssetManager assetManager = getAssets();
        try {
            InputStream epubInputStream = assetManager.open(BOOK_NAME);
            Book book = (new EpubReader()).readEpub(epubInputStream);
            logContentsTable(book.getTableOfContents().getTocReferences(), 0);
        } catch (IOException e) {
            Log.e("epublib", e.getMessage());
        }
    
        CustomAdapter adapter = new CustomAdapter(this, R.layout.list,
                R.id.title, contentDetails);
        setListAdapter(adapter);
        getListView().setTextFilterEnabled(true);
    }
    
    private class CustomAdapter extends ArrayAdapter<RowData>{
    
        public CustomAdapter(Context context, int resource,
                int textViewResourceId, List<RowData> objects) {
            super(context, resource, textViewResourceId, objects);
        }
    
        private class ViewHolder{
            private View row;
            private TextView titleHolder = null;
    
            public ViewHolder(View row) {
                super();
                this.row = row;
            }
    
            public TextView getTitle() {
                if(null == titleHolder)
                    titleHolder = (TextView) row.findViewById(R.id.title);
                return titleHolder;
            }
        }
    
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            TextView title = null;
            RowData rowData = getItem(position);
            if(null == convertView){
                convertView = inflater.inflate(R.layout.list, null);
                holder = new ViewHolder(convertView);
                convertView.setTag(holder);
            }
            holder = (ViewHolder) convertView.getTag();
            title = holder.getTitle();
            title.setText(rowData.getTitle());
            return convertView;
        }
    
    }
    
    private void logContentsTable(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());
            RowData row = new RowData();
            row.setTitle(tocString.toString());
            row.setResource(tocReference.getResource());
            contentDetails.add(row);
            logContentsTable(tocReference.getChildren(), depth + 1);
        }
    }
    
    private class RowData{
        private String title;
        private Resource resource;
    
        public RowData() {
            super();
        }
    
        public String getTitle() {
            return title;
        }
    
        public Resource getResource() {
            return resource;
        }
    
        public void setTitle(String title) {
            this.title = title;
        }
    
        public void setResource(Resource resource) {
            this.resource = resource;
        }
    
    }
    
    
    
    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);
        RowData rowData = contentDetails.get(position);
        Intent intent = new Intent(MicroEpubReaderActivity.this, ContentViewActivity.class);
        intent.putExtra("display", new String(rowData.getResource().getData()));
        startActivity(intent);
    
    }
    
    }
    

    <强> ContentViewActivity.java

    public class ContentViewActivity extends Activity {
    
    WebView webView;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.content);
    
        webView = (WebView) findViewById(R.id.webview);
        webView.getSettings().setJavaScriptEnabled(true);
    
        String displayString = getIntent().getExtras().getString("display");
        if(displayString != null)
            webView.loadData(displayString, "text/html", "utf-8");
    }   
    }
    

答案 1 :(得分:1)

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".ListActivity" >

<ListView
    android:id="@android:id/list"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" >
</ListView>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/title"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:padding="10dip"
    android:textSize="16dip"
    android:textStyle="bold" >
</TextView>

main.xml中 将此与pkamalaruban的答案一起使用

答案 2 :(得分:-1)

如果你想使用舞台网页视图来渲染epub,只需直接传递epub ...... android原生网页工具包浏览器几乎支持所有渲染格式。

var stageWebView:StageWebView = new StageWebView;
stageWebView.stage = stage;  
stageWebView.viewPort = new Rectangle(0, 0, stage.stageWidth, stage.stageHeight-100);  
stageWebView.loadURL("http://localhost/eboard.pdf"); // use any path

您不需要任何zip / unzip或解析....但如果您不去网页查看,那么您可能需要...