Android Open Source - Andriod-PC-GPSApplication External Storage Reader

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License

The source code is released under:

MIT License

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Java Source Code

/**
 * // ww  w .  j  a  v  a2s  . c o  m
 */
package com.example.appxgpsmodule.storage;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

import com.example.appxgpsmodule.Globals;
import android.content.Context;
import android.os.Environment;
import android.widget.Toast;

/**
 * @author NThusitha
 * @Date 21-August-2014
 * 
 */
public class ExternalStorageReader {

  private final static String EOD_FLAG = "END" + "\n";

  /**
   * Read file from the Android external storage.
   * 
   * @param file
   */
  public static void readExStorage(File file, Context ctx) {

    if (isMediaStorageReadable()) {

      try {
        BufferedReader reader = new BufferedReader(new FileReader(file));

        String line;
        try {
          while ((line = reader.readLine()) != null) {
            Globals.socketOut.print(line);
            Globals.socketOut.print("\n");
          }
          Globals.socketOut.print(EOD_FLAG);
          Globals.socketOut.flush();

        } catch (IOException e) {

          Toast.makeText(ctx,
              "error occured reading file from external storage",
              Toast.LENGTH_SHORT).show();
        }

      } catch (FileNotFoundException e) {

        Toast.makeText(ctx,
            "error occured reading from external storage",
            Toast.LENGTH_SHORT).show();
      }

    }else{
      Toast.makeText(ctx,
          "media storage not readable",
          Toast.LENGTH_SHORT).show();
    }

  }

  /**
   * @return - true if and only media has read/write capability.
   */
  public static boolean isMediaStorageReadWritable() {

    String state = Environment.getExternalStorageState();

    if (Environment.MEDIA_MOUNTED.equals(state)) {
      return true;
    }
    return false;

  }

  /**
   * @return - true if and only media storage is readable (only readable).
   */
  public static boolean isMediaStorageReadable() {

    String state = Environment.getExternalStorageState();

    if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state) || Environment.MEDIA_MOUNTED.equals(state)) {

      return true;
    }
    return false;
    

  }

}

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