How to convert a Base64 string into a Bitmap image to show it in a ImageView

Question

I have a Base64 String that represents a BitMap image   I need to transform that String into a BitMap image again to use it on a ImageView in my Android app  How to do it   This is the code that I use to transform the image into the base64 String      proceso de transformar la imagen BitMap en un String    android src  c  logo png  Resources r   this getResources    Bitmap bm   BitmapFactory decodeResource r  R drawable logo   ByteArrayOutputStream baos   new ByteArrayOutputStream      bm compress Bitmap CompressFormat PNG  100  baos     bm is the bitmap object    byte   b   baos toByteArray      String encodedImage   Base64 encode b  Base64 DEFAULT   encodedImage   Base64 encodeBytes b

User · Answer

I ve found this easy solution  To convert from bitmap to Base64 use this method   private String convertBitmapToBase64 Bitmap bitmap        ByteArrayOutputStream byteArrayOutputStream   new ByteArrayOutputStream        bitmap compress Bitmap CompressFormat PNG  100  byteArrayOutputStream       byte   byteArray   byteArrayOutputStream  toByteArray        return Base64 encodeToString byteArray  Base64 DEFAULT       To convert from Base64 to bitmap OR revert   private Bitmap convertBase64ToBitmap String b64        byte   imageAsBytes   Base64 decode b64 getBytes    Base64 DEFAULT       return BitmapFactory decodeByteArray imageAsBytes  0  imageAsBytes length

User · Answer

You can just basically revert your code using some other built in methods   byte   decodedString   Base64 decode encodedImage  Base64 DEFAULT   Bitmap decodedByte   BitmapFactory decodeByteArray decodedString  0  decodedString length

User · Answer

I have tried all the solutions and this one worked for me let temp   base64String components separatedBy   quot   quot   let dataDecoded   Data   Data base64Encoded  temp 1   options     ignoreUnknownCharacters   let decodedimage   UIImage data  dataDecoded   yourImage image   decodedimage

User · Answer

This is a very old thread but thought to share this answer as it took lot of my development time to manage NULL return of BitmapFactory decodeByteArray   as  Anirudh has faced   If the encodedImage string is a JSON response  simply use Base64 URL SAFE instead of Base64 DEAULT  byte   decodedString   Base64 decode encodedImage  Base64 URL SAFE   Bitmap decodedByte   BitmapFactory decodeByteArray decodedString  0  decodedString length

User · Answer

To check online you can use   http   codebeautify org base64-to-image-converter  You can convert string to image like this way  import android graphics Bitmap  import android graphics BitmapFactory  import android support v7 app AppCompatActivity  import android os Bundle  import android util Base64  import android widget ImageView   import java io ByteArrayOutputStream   public class MainActivity extends AppCompatActivity         Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main            ImageView image   ImageView findViewById R id image              encode image to base64 string         ByteArrayOutputStream baos   new ByteArrayOutputStream            Bitmap bitmap   BitmapFactory decodeResource getResources    R drawable logo           bitmap compress Bitmap CompressFormat JPEG  100  baos           byte   imageBytes   baos toByteArray            String imageString   Base64 encodeToString imageBytes  Base64 DEFAULT              decode base64 string to image         imageBytes   Base64 decode imageString  Base64 DEFAULT           Bitmap decodedImage   BitmapFactory decodeByteArray imageBytes  0  imageBytes length           image setImageBitmap decodedImage             http   www thecrazyprogrammer com 2016 10 android-convert-image-base64-string-base64-string-image html

User · Answer

To anyone who is still interested in this question  If  1-decodeByteArray returns null 2-Base64 decode throws bad-base64 Exception  Here is the solution  -You should consider the value sent to you from API is Base64 Encoded and should be decoded first in order to cast it to a Bitmap object  -Take a look at your Base64 encoded String  If it starts with      data image jpg base64   The Base64 decode won t be able to decode it  So it has to be removed from your encoded String   final String encodedString    data image jpg base64                                 final String pureBase64Encoded   encodedString substring encodedString indexOf         1     Now the pureBase64Encoded object is ready to be decoded   final byte   decodedBytes   Base64 decode pureBase64Encoded  Base64 DEFAULT     Now just simply use the line below to turn this into a Bitmap Object        Bitmap decodedBitmap   BitmapFactory decodeByteArray decodedBytes  0    decodedBytes length     Or if you re using the great library Glide   Glide with CaptchaFragment this  load decodedBytes  crossFade   fitCenter   into mCatpchaImageView     This should do the job  It wasted one day on this and came up to this solution   Note   If you are still getting bad-base64 error consider other Base64 decode flags like Base64 URL SAFE and so on

User · Answer

This is a great sample  String base64String    quot data image png base64 iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAA    quot   String base64Image   base64String split  quot   quot   1   byte   decodedString   Base64 decode base64Image  Base64 DEFAULT   Bitmap decodedByte   BitmapFactory decodeByteArray decodedString  0  decodedString length   imageView setImageBitmap decodedByte    Sample found at  https   freakycoder com android-notes-44-how-to-convert-base64-string-to-bitmap-53f98d5e57af This is the only code that worked for me in the past

[android] How to convert a Base64 string into a Bitmap image to show it in a ImageView?

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