Generate bitmap from HTML in Android

Question

How do can you generate a bitmap from HTML in Android?

Can the WebView be used for this or is there a better approach (like maybe using the WebVie

Answer 1

You can use the draw method to let it draw in a Bitmap of your choice. I made an example, don't forget internet and external storage rights of your manifest:

public class MainActivity extends Activity {
    private WebView mWebView;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mWebView = new WebView(this);
        setContentView(mWebView);
        mWebView.loadUrl("http://tea.ch");
    }
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
      if (keyCode != KeyEvent.KEYCODE_BACK) return super.onKeyDown(keyCode, event);
      Bitmap bm = Bitmap.createBitmap(200, 300, Bitmap.Config.ARGB_8888);
      Canvas c = new Canvas(bm);
      mWebView.draw(c);
      OutputStream stream = null;
      try {
        stream = new FileOutputStream(Environment.getExternalStorageDirectory() +"/teach.png");
        bm.compress(CompressFormat.PNG, 80, stream);
        if (stream != null) stream.close();
      } catch (IOException e) {
      } finally {
        bm.recycle();
      }

      return super.onKeyDown(keyCode, event);
    }
}