converting image to byte array in android

Question

Bitmap bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.images);
ByteArrayOutputStream stream=new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 90, stream); // what 90 does ??
byte[] image=stream.toByteArray();

What does 90 in bitmap.compress(Bitmap.CompressFormat.PNG, 90, stream); mean?

Possible duplicate of How to convert image into byte array and byte array to base64 String in android? — Harshad Pansuriya
– Harshad Pansuriya, Commented Jun 30, 2016 at 7:23

Sohail Zahid · Accepted Answer · 2016-06-30 07:20:12Z

3

public boolean compress (Bitmap.CompressFormat format, int quality, OutputStream stream)

Quality:

Hint to the compressor, 0-100. 0 meaning compress for small size, 100 meaning compress for max quality. Some formats, like PNG which is lossless, will ignore the quality setting.

answered Jun 30, 2016 at 7:20

Sohail Zahid

8,1893 gold badges27 silver badges42 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

FaisalAhmed Over a year ago

what is difference between if i give value 50 and 90 . I am still confuse . which compress qaulity is better . and how should i decide right qaulity that is suitable for me?

Sohail Zahid Over a year ago

its image quality factor if you want high quality image use 100 otherwise relative value according you requirment.

Saurabh Vardani · Accepted Answer · 2016-06-30 07:23:28Z

boolean compress (Bitmap.CompressFormat format, 
                int quality, 
                OutputStream stream)

Here, Quality is an integer type which is used to hint to the compressor, 0-100.
Here, 0 means compress for minimum quality, 100 meaning compress for max quality.
It totally depends upon your requirement.. that in what quality you want your image after compression.(Which effects on the size of the image also)
Some formats, like PNG (lossless ), will ignore the quality setting.

For more Information click here...

Collectives™ on Stack Overflow

converting image to byte array in android

2 Answers 2

2 Comments

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Linked

Related