Render Epub Files In Android

I have a epub file. I need to unzip and parse the epub file and render it in Webview. Is there a step by step tutorial somewhere.

Solution 1:

1. Visit this site and download the two jar files mentioned in that page.
2. Import those libraries to your android project
3. I implemented this task using two activities : 1.) EpubReaderActivity - this activity will display a list view of Table of Contents 2.) ContentViewActivity - this will display the selected chapter.

EpubReaderActivity.java

publicclassEpubReaderActivityextendsListActivity 
{

private LayoutInflater inflater;
private List<RowData> contentDetails;
publicstaticfinalStringBOOK_NAME="books/wodehouse.epub";

/** Called when the activity is first created. */@OverridepublicvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    inflater = (LayoutInflater) getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
    contentDetails = newArrayList<RowData>();
    AssetManagerassetManager= getAssets();
    try {
        InputStreamepubInputStream= assetManager.open(BOOK_NAME);
        Bookbook= (newEpubReader()).readEpub(epubInputStream);
        logContentsTable(book.getTableOfContents().getTocReferences(), 0);
    } catch (IOException e) {
        Log.e("epublib", e.getMessage());
    }

    CustomAdapteradapter=newCustomAdapter(this, R.layout.list,
            R.id.title, contentDetails);
    setListAdapter(adapter);
    getListView().setTextFilterEnabled(true);
}

privateclassCustomAdapterextendsArrayAdapter<RowData>{

    publicCustomAdapter(Context context, int resource,
            int textViewResourceId, List<RowData> objects) {
        super(context, resource, textViewResourceId, objects);
    }

    privateclassViewHolder{
        private View row;
        privateTextViewtitleHolder=null;

        publicViewHolder(View row) {
            super();
            this.row = row;
        }

        public TextView getTitle() {
            if(null == titleHolder)
                titleHolder = (TextView) row.findViewById(R.id.title);
            return titleHolder;
        }
    }

    @Overridepublic View getView(int position, View convertView, ViewGroup parent) {
        ViewHolderholder=null;
        TextViewtitle=null;
        RowDatarowData= getItem(position);
        if(null == convertView){
            convertView = inflater.inflate(R.layout.list, null);
            holder = newViewHolder(convertView);
            convertView.setTag(holder);
        }
        holder = (ViewHolder) convertView.getTag();
        title = holder.getTitle();
        title.setText(rowData.getTitle());
        return convertView;
    }

}

privatevoidlogContentsTable(List<TOCReference> tocReferences, int depth) {
    if (tocReferences == null) {
        return;
    }
    for (TOCReference tocReference:tocReferences) {
        StringBuildertocString=newStringBuilder();
        for (inti=0; i < depth; i++) {
            tocString.append("\t");
        }
        tocString.append(tocReference.getTitle());
        RowDatarow=newRowData();
        row.setTitle(tocString.toString());
        row.setResource(tocReference.getResource());
        contentDetails.add(row);
        logContentsTable(tocReference.getChildren(), depth + 1);
    }
}

privateclassRowData{
    private String title;
    private Resource resource;

    publicRowData() {
        super();
    }

    public String getTitle() {
        return title;
    }

    public Resource getResource() {
        return resource;
    }

    publicvoidsetTitle(String title) {
        this.title = title;
    }

    publicvoidsetResource(Resource resource) {
        this.resource = resource;
    }

}



@OverrideprotectedvoidonListItemClick(ListView l, View v, int position, long id) {
    super.onListItemClick(l, v, position, id);
    RowDatarowData= contentDetails.get(position);
    Intentintent=newIntent(MicroEpubReaderActivity.this, ContentViewActivity.class);
    intent.putExtra("display", newString(rowData.getResource().getData()));
    startActivity(intent);

}

}

---

ContentViewActivity.java

publicclassContentViewActivityextendsActivity {

WebView webView;

@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stubsuper.onCreate(savedInstanceState);
    setContentView(R.layout.content);

    webView = (WebView) findViewById(R.id.webview);
    webView.getSettings().setJavaScriptEnabled(true);

    StringdisplayString= getIntent().getExtras().getString("display");
    if(displayString != null)
        webView.loadData(displayString, "text/html", "utf-8");
}   
}

Solution 2:

<LinearLayoutxmlns: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" ><ListViewandroid:id="@android:id/list"android:layout_width="match_parent"android:layout_height="wrap_content" ></ListView><TextViewxmlns: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 Use this with pkamalaruban's answer

Solution 3:

If you want to use stage web view for rendering epub simply pass the epub directly....The android native web kit browser supports almost all formats for rendering.

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

You dont require any zip/unzip or parsing....but in case you do not go for web view then you might need that...