誰能告訴我如何將任何格式的圖像直接轉換為字符串？

Question

private String getBase64String() {

    // give your image file url in mCurrentPhotoPath
    Bitmap bitmap = BitmapFactory.decodeFile(mCurrentPhotoPath);

    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    // In case you want to compress your image, here it's at 40%

// here i use JPEG image but now can anyone tell how can i convert any format image in String 
    bitmap.compress(Bitmap.CompressFormat.JPEG, 40, byteArrayOutputStream);
    byte[] byteArray = byteArrayOutputStream.toByteArray();

    return Base64.encodeToString(byteArray, Base64.DEFAULT);
}

Answer 1

您可以使用 Base64 Android 類：

String ecodImage = Base64.encodeToString(byteArrayImage, Base64.DEFAULT);

不過，您必須將圖像轉換為字節數組。例如：

Bitmap btm = BitmapFactory.decodeFile("/path/to/image.jpg");
ByteArrayOutputStream baos = new ByteArrayOutputStream();  
btm.compress(Bitmap.CompressFormat.JPEG, 100, baos); //btm is the bitmap object   
byte[] b = baos.toByteArray();