修改发送单片机文件内容 命令ID；修改读取单片机内容方法

lizhanwei

2020-02-10 d9941fe4e30358f98c90a080dd0835fceb0213ee

 app/src/main/java/safeluck/drive/evaluation/util/FileUtil.java

@@ -8,8 +8,10 @@
import android.util.Log;

import com.anyun.exam.lib.MyLog;
import com.anyun.exam.lib.util.ByteUtil;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
@@ -120,9 +122,10 @@
                e.printStackTrace();
            }

            InputStreamReader inputStreamReader = new InputStreamReader(inputStream,"ISO-8859-1");
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream,"GB2312");
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
            while((lineTxt = bufferedReader.readLine()) != null){
//                System.out.println(   ByteUtil.byte2hex(lineTxt.getBytes("ISO-8859-1")));

                stringBuffer.append(lineTxt);

@@ -182,4 +185,31 @@
        }
    }

    public static byte[] readLocalFile(Context context,String fileName) throws IOException {
        InputStream inputStream = null;
        String dir = Environment.getExternalStorageDirectory().getAbsolutePath()+"/";
        File file = new File(dir,fileName);
        if (!file.exists()){
            MyLog.d(TAG,dir+"目录下"+fileName+"文件不存在");
            return null;
        }
        try {
            inputStream = new FileInputStream(file);
        } catch (IOException e) {
            e.printStackTrace();
        }
        byte[] data = toByteArray(inputStream);
        inputStream.close();
        return data;
    }
    private static byte[] toByteArray(InputStream in) throws IOException {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024 * 4];
        int n = 0;
        while ((n = in.read(buffer)) != -1) {
            out.write(buffer, 0, n);
        }
        return out.toByteArray();
    }

}