How to save .HTML page/file in application's database in android?

Question

I am right now working on an app which works as a book-stack,where user can read books of their choice,now what i am doing is,displaying the html pages that i\'ve made,i

Answer 1

Code snippet for downloading web page. Check the comments in the code. Just provide the link ie www.mytestpage.com/story1.htm as downloadlink to the function

    void Download(String downloadlink,int choice)
{
    try {
        String USERAGENT;
        if(choice==0)
        {
            USERAGENT ="Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_7; en-us) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Safari/530.17";
        }
        else
        {
            USERAGENT ="Mozilla/5.0 (Linux; U; Android 2.1-update1; en-us; ADR6300 Build/ERE27) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17";
        }
        URL url = new URL(downloadlink);
        //create the new connection
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        //set up some things on the connection
        urlConnection.setRequestProperty("User-Agent", USERAGENT);  //if you are not sure of user agent just set choice=0
        urlConnection.setRequestMethod("GET");
        urlConnection.setDoOutput(true);
        urlConnection.connect();

        //set the path where we want to save the file
        File SDCardRoot = Environment.getExternalStorageDirectory();
        File dir = new File (SDCardRoot.getAbsolutePath() + "/yourfolder");
        if(!dir.exists())
        {
        dir.mkdirs();
        }
        File file = new File(dir, "filename");  //any name abc.html

        //this will be used to write the downloaded data into the file we created
        FileOutputStream fileOutput = new FileOutputStream(file);

        //this will be used in reading the data from the internet
        InputStream inputStream = urlConnection.getInputStream();

        //this is the total size of the file
        int totalSize = urlConnection.getContentLength();
        //variable to store total downloaded bytes
        int downloadedSize = 0;

        //create a buffer...
        byte[] buffer = new byte[1024];
        int bufferLength = 0; //used to store a temporary size of the buffer

        //write the contents to the file
        while ( (bufferLength = inputStream.read(buffer)) > 0 ) {
            fileOutput.write(buffer, 0, bufferLength);
        }
        //close the output stream when done
        fileOutput.close();
        inputStream.close();
        urlConnection.disconnect();

    //catch some possible errors...
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

Answer 2

Here what's the mean of "Local Database"?

Preferred way is download your pages in either Internal Storage(/<data/data/<application_package_name>) (by default on non rooted device is private to your application) or on External Storage(public access). Then refer the pages from that storage area when user device has not a internet connection (offline mode).

Update: 1

To store those pages, you can use simple File read/write operation in Android.

For example:

String FILENAME = "hello_file";
String string = "hello world!";

FileOutputStream fos = openFileOutput(FILENAME, Context.MODE_PRIVATE);
fos.write(string.getBytes());
fos.close();

This example store file hello_file in your application's internal storage directory.

Update: 2 Download Web-Content

HttpClient httpClient = new DefaultHttpClient();
HttpContext localContext = new BasicHttpContext();
HttpGet httpGet = new HttpGet("http://www.xxxx.com");
HttpResponse response = httpClient.execute(httpGet, localContext);
String result = "";

BufferedReader reader = new BufferedReader(
    new InputStreamReader(
      response.getEntity().getContent()
    )
  );

String line = null;
while ((line = reader.readLine()) != null){
  result += line + "\n";
}

// Now you have the whole HTML loaded on the result variable

So write result variable in File, using my update 1 code. Simple.. :-)

Don't forget to add these two permission in your android application's manifest file.

  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
  <uses-permission android:name="android.permission.INTERNET"></uses-permission>