Convert view to bitmap on Android
android, bitmap, view
Solution
here is my solution:
public static Bitmap getBitmapFromView(View view) {
//Define a bitmap with the same size as the view
Bitmap returnedBitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(),Bitmap.Config.ARGB_8888);
//Bind a canvas to it
Canvas canvas = new Canvas(returnedBitmap);
//Get the view's background
Drawable bgDrawable =view.getBackground();
if (bgDrawable!=null)
//has background drawable, then draw it on the canvas
bgDrawable.draw(canvas);
else
//does not have background drawable, then draw white background on the canvas
canvas.drawColor(Color.WHITE);
// draw the view on the canvas
view.draw(canvas);
//return the bitmap
return returnedBitmap;
}
Enjoy :)
Problem
I need to convert a view to a bitmap to preview my view and to save it as an image. I tried using the following code, but it creates a blank image. I cannot understand where I made a mistake. ``` View viewToBeConverted; Bitmap viewBitmap = Bitmap.createBitmap(viewToBeConverted.getWidth(), viewToBeConverted.getHeight(),Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(viewBitmap); viewToBeConverted.draw(canvas); savephoto(“f1”, viewBitmap); //// public void savephoto(String filename,Bitmap bit) { File newFile = new File(Environment.getExternalStorageDirectory() + Picture_Card/"+ filename+ ".PNG"); try { newFile.createNewFile(); try { FileOutputStream pdfFile = new FileOutputStream(newFile); Bitmap bm = bit; ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.PNG,100, baos); byte[] bytes = baos.toByteArray(); pdfFile.write(bytes); pdfFile.close(); } catch (FileNotFoundException e) { // } } catch (IOException e) { // } } ```