我正在尝试将bitcode图像转换为base64格式。我尝试编码像
public static String encodeToBase64(Bitmap image, Bitmap.CompressFormat compressFormat, int quality)
{
ByteArrayOutputStream byteArrayOS = new ByteArrayOutputStream();
image.compress(compressFormat, quality, byteArrayOS);
return Base64.encodeToString(byteArrayOS.toByteArray(), Base64.URL_SAFE);
}
生成的响应低于它不再给我图像。
有人可以提供一些指示吗?我可能做错了什么?
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答案 0 :(得分:1)
尝试此功能:
NullReferenceException
答案 1 :(得分:0)
这里有一些误解。在您的方法中,您将通过参数接收位图(图像)。如果你想将它传递给base64
格式,你就是这样做的,因为base64
格式只是一个大字符串,正如你在回程中看到的那样。
如果错误出现在您的方法和反向过程中(将String
中的Base64
解析为Bitmap
),您可以尝试此功能:
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream);
byte[] byteArray = byteArrayOutputStream .toByteArray();
从base64
编码byte array
使用以下方法:
String encoded = Base64.encodeToString(byteArray, Base64.DEFAULT);
另外,尝试使用此方法来反转编码过程:
byte[] decodedString = android.util.Base64.decode(yourString, android.util.Base64.DEFAULT);
Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);