How to get bitmap from a url in android?

Question

I have a uri like which has an image

file:///mnt/...............

How to use this uri to get the image but it returns null, please tell me where i am wrong.

Bitmap bitmap = BitmapFactory.decodeFile(uri.getPath());
Bitmap bitmap = BitmapFactory.decodeFile(uri.toString());

My perfect solution: `val imageBitmap = Picasso.get().load(imageUrl).get()` — Sam Chen, Sep 13 '20 at 17:02

score 162 · Accepted Answer · edited Oct 16 '16 at 19:55

162

This is a simple one line way to do it:

    try {
        URL url = new URL("http://....");
        Bitmap image = BitmapFactory.decodeStream(url.openConnection().getInputStream());
    } catch(IOException e) {
        System.out.println(e);
    }

edited Oct 16 '16 at 19:55

Pavlin

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answered Aug 06 '12 at 15:30

brthornbury

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That isn't a one-liner as creating your url object should be surrounded in try-catch. – portfoliobuilder Mar 17 '15 at 22:14
The idea was a one line way to get the bitmap given you had already defined an url. – brthornbury Apr 19 '15 at 04:36
11

`url.openConnection().getInputStream()` can be replaced with simply `url.openStream()` – Tony Wickham Dec 15 '15 at 21:14
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this throw android.os.NetworkOnMainThreadException – Navid_pdp11 Dec 15 '16 at 12:49
Must be a new android feature (and a good one at that), you might temporarily try targeting a lower android version, or alternatively putting this one liner in a separate thread. – brthornbury Dec 21 '16 at 02:51
@Navid_pdp11 don't call any network operation on main thread, use asynctask or thread instead – vuhung3990 Jan 09 '19 at 04:30
url.openStream() is also not working Please update this code – Keshav Gera May 15 '19 at 09:06
@brthornbury This will lead to app crashing, do you have any idea for the moment ? – TheCoderGuy May 25 '19 at 18:25
For the App crash: Instead of "IOException e" use: "Exception e" – PYK Aug 13 '19 at 18:49

score 23 · Answer 2 · answered Aug 06 '12 at 15:26

23

This should do the trick:

public static Bitmap getBitmapFromURL(String src) {
    try {
        URL url = new URL(src);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();
        InputStream input = connection.getInputStream();
        Bitmap myBitmap = BitmapFactory.decodeStream(input);
        return myBitmap;
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
} // Author: silentnuke

Don't forget to add the internet permission in your manifest.

answered Aug 06 '12 at 15:26

Luke Taylor

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how bout my url has https connection? – Han Whiteking Apr 10 '17 at 07:39
4

@LukeTaylor This doesn't work anymore it will leads to crash at the app. – TheCoderGuy May 25 '19 at 18:26

score 4 · Answer 3 · answered Aug 06 '12 at 20:57

Okay so you are trying to get a bitmap from a file? Title says URL. Anyways, when you are getting files from external storage in Android you should never use a direct path. Instead call getExternalStorageDirectory() like so:

File bitmapFile = new File(Environment.getExternalStorageDirectory() + "/" + PATH_TO_IMAGE);
Bitmap bitmap = BitmapFactory.decodeFile(bitmapFile);

getExternalStorageDirectory() gives you the path to the SD card. Also you need to declare the WRITE_EXTERNAL_STORAGE permission in the Manifest.

How to get bitmap from a url in android?

3 Answers3

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