Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 *    Copyright 2014 University of Helsinki
 *
 *    Licensed under the Apache License, Version 2.0 (the "License"); you may
 *    not use this file except in compliance with the License. You may obtain
 *    a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 *    License for the specific language governing permissions and limitations
 *    under the License.
 **/

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;

import android.os.Environment;
import android.util.Log;

public class Main {
    public static void writeToExternalFile(String data, String logTag, String fileName) {

        if (!isExternalStorageWritable()) {
            Log.e(logTag, "failed to find external storage");
        } else {
            File path = Environment.getExternalStorageDirectory();
            File dir = new File(path.getAbsolutePath() + "/SDNController");
            if (!dir.isDirectory()) {
                if (!dir.mkdirs()) {
                    Log.e(logTag, "sdn directory can not be created");
                    return;
                }
            }

            File file = new File(dir, fileName);
            try {
                FileOutputStream f = new FileOutputStream(file, true);
                PrintWriter pw = new PrintWriter(f);
                pw.println(data);
                pw.flush();
                pw.close();
                f.close();
            } catch (FileNotFoundException e) {
                Log.e(logTag, "can not find indicated file");
                e.printStackTrace();
            } catch (IOException e) {
                Log.e(logTag, "failed to write SDNController/result.txt");
                e.printStackTrace();
            }
        }
    }

    public static boolean isExternalStorageWritable() {
        String state = Environment.getExternalStorageState();
        if (Environment.MEDIA_MOUNTED.equals(state)) {
            return true;
        }
        return false;
    }
}