Convert Base64 String To Image In Android

I have converted an image into base64 through an online site. I went through this link to hold base64 string in a String. But i get an error saying Error:(38, 36) error: consta

Solution 1:

You can just basically revert your code using some other built-in methods.

byte[] decodedString = Base64.decode(encodedImage, Base64.DEFAULT);

BitmapdecodedByte= BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length); 

Solution 2:

//encode image(from image path) to base64 stringByteArrayOutputStreambaos=newByteArrayOutputStream();
                Bitmapbitmap= BitmapFactory.decodeFile(pathOfYourImage);
                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
                byte[] imageBytes = baos.toByteArray();
                StringimageString= Base64.encodeToString(imageBytes, Base64.DEFAULT);

     //encode image(image from drawable) to base64 stringByteArrayOutputStreambaos=newByteArrayOutputStream();
                Bitmapbitmap= BitmapFactory.decodeResource(getResources(), R.drawable.yourDrawableImage);
                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
                byte[] imageBytes = baos.toByteArray();
                StringimageString= Base64.encodeToString(imageBytes, Base64.DEFAULT);

Solution 3:

Did you try to use the class BitmapFactory ?

Please try something like this :

byte[] decodedString = Base64.decode(encodedImage, Base64.DEFAULT);
BitmapdecodedByte= BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length); 

Also, according to the error you get, it seems that you use a static final String to hold you encoded base64 string. In Java, the length of constant string is limited to 64k.

Solution 4:

First of all check your string

http://codebeautify.org/base64-to-image-converter

Try this way to convert.

publicclassMainActivityextendsAppCompatActivity {

    @OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ImageViewimage=(ImageView)findViewById(R.id.image);

        //encode image to base64 stringByteArrayOutputStreambaos=newByteArrayOutputStream();
        Bitmapbitmap= BitmapFactory.decodeResource(getResources(), R.drawable.logo);
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
        byte[] imageBytes = baos.toByteArray();
        StringimageString= Base64.encodeToString(imageBytes, Base64.DEFAULT);

        //decode base64 string to image
        imageBytes = Base64.decode(imageString, Base64.DEFAULT);
        BitmapdecodedImage= BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length);
        image.setImageBitmap(decodedImage);
    }
}

http://www.thecrazyprogrammer.com/2016/10/android-convert-image-base64-string-base64-string-image.html