How to convert json array of byte to bitmap

Question

I need to convert a json array of byte to the bitmap image using android.i got json response like this

{"type":"Buffer","data":[137,80,78,71,13,10,26,10,0,0,0,13,73,72,68,82,0,0,1,140,0,0,1,34,4,3,0,0,0,24,1,248,231,0,0,0,21,80,76,84,69,255,255,255,0,0,0,220,217,207,0,100,0,176,196,222,0,153,204,204,255,255,227,179,150,92,0,0,1,29,73,68,65,84,120,156,237,207,1,13,128,64,12,4,193,211,130,5,44,96,1,11,248,151,192,91,104,66,66,191,153,85,176,147,99,68,249,123,224,155,48,58,181,24,217,62,140,78,205,98,156,165,146,171,84,114,151,74,158,82,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,157,25,187,135,209,169,73,140,9,97,116,106,8,227,5,178,0,69,109,104,207,36,38,0,0,0,0,73,69,78,68,174,66,96,130]}

this image byte array is read from postgres DB(type:Bytea).

How to convert the byte array to actual image.

this is my code for converting data

img = profPic.getJSONArray("data");
bImage = Base64.decode(img.toString().getBytes(), Base64.DEFAULT);
bmp = BitmapFactory.decodeByteArray(bImage, 0, bImage.length);

What is in bImage? What is in img? Why would you think you could turn a JSONArray into a bitmap? — Scott Hunter
– Scott Hunter, Commented Mar 24, 2016 at 9:10
bImage is a byte array.i am getting some tumbnails from server in json array format.i am trying to convert it to byte array and then to bitmap. — Nison Cheruvathur
– Nison Cheruvathur, Commented Mar 24, 2016 at 9:40
What does the CONTENTS of bImage look like? What does the CONTENTS of img look like? — Scott Hunter
– Scott Hunter, Commented Mar 24, 2016 at 10:28

anas p a · Accepted Answer · 2016-03-28 03:56:59Z

Try this

JSONObject obj=new JSONObject("{\"type\":\"Buffer\",\"data\":[137,80,78,71,13,10,26,10,0,0,0,13,73,72,68,82,0,0,1,140,0,0,1,34,4,3,0,0,0,24,1,248,231,0,0,0,21,80,76,84,69,255,255,255,0,0,0,220,217,207,0,100,0,176,196,222,0,153,204,204,255,255,227,179,150,92,0,0,1,29,73,68,65,84,120,156,237,207,1,13,128,64,12,4,193,211,130,5,44,96,1,11,248,151,192,91,104,66,66,191,153,85,176,147,99,68,249,123,224,155,48,58,181,24,217,62,140,78,205,98,156,165,146,171,84,114,151,74,158,82,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,157,25,187,135,209,169,73,140,9,97,116,106,8,227,5,178,0,69,109,104,207,36,38,0,0,0,0,73,69,78,68,174,66,96,130]} ");
Bitmap bitmap=null;
byte[] tmp=new byte[obj.getJSONArray("data").length()];
for(int i=0;i<obj.getJSONArray("data").length();i++){
     tmp[i]=(byte)(((int)obj.getJSONArray("data").get(i)) & 0xFF);
}
bitmap= BitmapFactory.decodeByteArray(tmp, 0, tmp.length);

PravinS · Accepted Answer · 2016-03-24 12:54:56Z

0

Try this

byte[] bitmapdata = blob.toByteArray();
Bitmap bitmap = BitmapFactory.decodeByteArray(bitmapdata, 0, bitmapdata.length);

edited Mar 24, 2016 at 12:54

PravinS

2,5943 gold badges22 silver badges27 bronze badges

answered Mar 24, 2016 at 12:26

Abdul Manaf

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1 Comment

Scott Hunter Over a year ago

And where does blob come from?

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