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Comment convertir Bitmap en chaîne Base64

Je développe une Android qui télécharge Base64 Chaîne d'image sur le serveur Web. Par conséquent, j'ai utilisé le code suivant pour convertir un bitmap en Base64 Chaîne.

public String getEncoded64ImageStringFromBitmap(Bitmap bitmap) {
    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
    byte[] byteFormat = stream.toByteArray();
    String imgString = Base64.encodeToString(byteFormat, Base64.NO_WRAP);
    return imgString;
}

Par exemple, j'ai besoin de convertir cela image . Après la conversion, je ne reçois pas le Base64 Chaîne comme je m'y attendais.

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

La vraie chaîne Base64 devrait être ceci (j'utilise ceci site web pour convertir)

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

Quel est le problème dans ma conversion? Merci !

androidbitmapbase64
14
SinLok
public static String encodeTobase64(Bitmap image) {
    Bitmap immagex = image;
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    immagex.compress(Bitmap.CompressFormat.PNG, 100, baos);
    byte[] b = baos.toByteArray();
    String imageEncoded = Base64.encodeToString(b, Base64.DEFAULT);
    return imageEncoded;
}

public static Bitmap decodeBase64(String input) {
    byte[] decodedByte = Base64.decode(input, 0);
    return BitmapFactory.decodeByteArray(decodedByte, 0, decodedByte.length);
}
11
Dhruv

utilisez l'extrait de code suivant pour convertir bitmap en tableau d'octets:

ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();  
bitmap.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream);
byte[] byteArray = byteArrayOutputStream .toByteArray();

puis pour encoder base64 à partir de tableau d'octets utilisez l'instruction suivante:

String encoded = Base64.encodeToString(byteArray, Base64.DEFAULT);
6
UNova S
public String getBase64ImageString(Bitmap photo) {
        String imgString;
        if(photo != null) {
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            photo.compress(Bitmap.CompressFormat.PNG, 100, outputStream);
            byte[] profileImage = outputStream.toByteArray();

            imgString = Base64.encodeToString(profileImage,
                    Base64.NO_WRAP);
        }else{
            imgString = "";
        }

        return imgString;
    }

Passez votre Bitmap dans les paramètres vous obtiendrez votre chaîne d'image.

1
Maniya Joe