Encode image to Base64 string - Android android.util

Android examples for android.util:Base64

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  4. Base64

Description

Encode image to Base64 string

Demo Code

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.Locale;
import java.util.Vector;
import java.util.regex.Pattern;
import android.util.Base64;
public class Main {

  public static String Image2Base64(String imageName) {
    try {/*from  w w  w .  j a v a  2  s . c  o  m*/
      FileInputStream in = new FileInputStream(imageName);
      byte buffer[] = InputStram2byteArray(in);
      byte[] encode = Base64.encode(buffer, Base64.DEFAULT);
      return new String(encode);

    } catch (Exception e) {
      e.printStackTrace();
      return "";
    }
  }

  public static byte[] InputStram2byteArray(InputStream in) {
    try {
      ByteArrayOutputStream out = new ByteArrayOutputStream();
      if (in != null) {
        byte[] buffer = new byte[1024];
        int length = 0;
        while ((length = in.read(buffer)) != -1) {
          out.write(buffer, 0, length);
        }
        out.close();
        in.close();
        return out.toByteArray();
      }
    } catch (Exception e) {
      e.printStackTrace();
    }

    return null;
  }
}

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