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I'm using a library that returns a bitmap image if I want to share this image to another application or send it via email? I don't have the Uri of the image then what should I do

Zoe
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FlyBoys_Ali
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2 Answers2

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  1. convert your bitmap into a file: 

    String path = Environment.getExternalStorageDirectory();
            File file = new File(path + "/image_name.jpg"); 
            OutputStream fOut = new FileOutputStream(file);
            pictureBitmap.compress(Bitmap.CompressFormat.JPEG, 85, fOut); // saving the Bitmap to a file compressed as a JPEG with 85% compression rate
            fOut.flush(); // Not really required
            fOut.close(); // do not forget to close the stream
  1. Get the URI from the file: Uri yourUri = Uri.fromFile(file);


Addition: for android 7.0+ you need a different way to get URI from file.
Saving file to the default main directory is only an example but maybe not the best practice.

  • This will not work on Android 7.0+, as you cannot share a `file` `Uri`. Also, putting things in the root of external storage is very inappropriate -- this is why Android Q/R are basically eliminating your solution. – CommonsWare May 11 '19 at 11:03
  • @CommonsWare added in the answer. –  May 11 '19 at 19:46
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It all depends on your environment: - you can get hand over the complete image (e.g. an attachment in an email) - if you have an solution which could be accessed from the target, then you can create your own uri. On a local system, you could store the image in a file. Or if you have a web application, you might want to make the image available so that you can provide an url to the image, too)

So it mainly depends on the whole Szenario: where does the image come from, how big is it? What is the target? ....

And sorry, that I do Not write this as a comment - need a reputation of 50 to write comments first ....

Konrad Neitzel
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