读取二进制文件为字符串，在Android Studio (java)中编辑后返回为二进制文件

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

public class BinaryFileToStringConverter {
    public static String convertBinaryFileToString(String filePath) {
        File file = new File(filePath);
        FileInputStream fis = null;
        StringBuilder sb = new StringBuilder();

        try {
            fis = new FileInputStream(file);
            int content;
            while ((content = fis.read()) != -1) {
                sb.append((char) content);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fis != null) {
                try {
                    fis.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

        return sb.toString();
    }
}

String filePath = "/path/to/binary/file";
String binaryString = BinaryFileToStringConverter.convertBinaryFileToString(filePath);