How can I programmatically take a screenshot of a webview, capturing the full page?

Question

I think the title pretty much covers it, but I have a webview in my activity. I've loaded a url into the webview and I'd like to take a screenshot of the full page (whatever is in the viewport and the stuff "below the fold" as well).

I've got code that works to snapshot the viewport, and I know this can be done in iOS by enlarging the webview before snapshotting it. I've tried to use the same technique here:

    WebView browserView = (WebView) findViewById(R.id.browserView);      //Resize the webview to the height of the webpage     int pageHeight = browserView.getContentHeight();     LayoutParams browserParams = browserView.getLayoutParams();     browserView.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, pageHeight));      //Capture the webview as a bitmap     browserView.setDrawingCacheEnabled(true);     Bitmap bitmap = Bitmap.createBitmap(browserView.getDrawingCache());     browserView.setDrawingCacheEnabled(false);      //Create the filename to use     String randomFilenamepart = String.valueOf(new SecureRandom().nextInt(1000000));     String filename = Environment.getExternalStorageDirectory().toString() + "/Screenshot_" + randomFilenamepart + ".jpg";     File imageFile = new File(filename);     //Stream the file out to external storage as a JPEG     OutputStream fout = null;     try {         fout = new FileOutputStream(imageFile);         bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fout);         fout.flush();         fout.close();     } catch (FileNotFoundException e) {         e.printStackTrace();     } catch (IOException e) {         e.printStackTrace();     } finally {         browserView.setLayoutParams(browserParams);     } 

But I'm still only capturing just the viewport. Disregarding things like running out of memory because the page is too large, does anyone know what I'm doing wrong or how I can include the portion outside the viewport?

Answer 1

Try this one

import java.io.FileOutputStream;  import android.app.Activity; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Picture; import android.os.Bundle; import android.view.Menu; import android.webkit.WebView; import android.webkit.WebViewClient;  public class MainActivity extends Activity {      WebView w;      @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         w = new WebView(this);         w.setWebViewClient(new WebViewClient() {             public void onPageFinished(WebView view, String url) {                 Picture picture = view.capturePicture();                 Bitmap b = Bitmap.createBitmap(picture.getWidth(),                         picture.getHeight(), Bitmap.Config.ARGB_8888);                 Canvas c = new Canvas(b);                  picture.draw(c);                 FileOutputStream fos = null;                 try {                      fos = new FileOutputStream("mnt/sdcard/yahoo.jpg");                     if (fos != null) {                         b.compress(Bitmap.CompressFormat.JPEG, 100, fos);                          fos.close();                     }                 } catch (Exception e) {                  }             }         });          setContentView(w);         w.loadUrl("http://search.yahoo.com/search?p=android");     }      @Override     public boolean onCreateOptionsMenu(Menu menu) {         getMenuInflater().inflate(R.menu.activity_main, menu);         return true;     } }  

Add INTERNET PERMISSION and WRITE_EXTERNAL_STORAGE in AndroidManifest.xml file.

Need to ask permission at run time for file write if app is running on or above Marshmallow.

Answer 2

webview.capturePicture() is deprecated, use below way can do:

Bitmap bitmap = Bitmap.createBitmap(webview.getWidth(), webview.getHeight(), Config.ARGB_8888); Canvas canvas = new Canvas(bitmap); webview.draw(canvas); return bitmap;