Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.content.Context;
import android.content.res.AssetFileDescriptor;

import android.widget.Toast;
import java.io.File;
import java.io.FileInputStream;

import java.io.FileOutputStream;
import java.io.IOException;

public class Main {
    /**
     * Reads a file that is embedded in our application and writes it to the device storage
     * @param context
     * @param file
     * @param assetFileDescriptor
     */
    private static void saveFileToDevice(Context context, File file, AssetFileDescriptor assetFileDescriptor) {
        // The output stream is used to write the new file to the device storage
        FileOutputStream outputStream = null;
        // The input stream is used for reading the file that is embedded in our application
        FileInputStream inputStream = null;
        try {
            byte[] buffer = new byte[1024];
            // Create the input stream
            inputStream = (assetFileDescriptor != null) ? assetFileDescriptor.createInputStream() : null;
            // Create the output stream
            outputStream = new FileOutputStream(file, false);
            // Read the file into buffer
            int i = (inputStream != null) ? inputStream.read(buffer) : 0;
            // Continue writing and reading the file until we reach the end
            while (i != -1) {
                outputStream.write(buffer, 0, i);
                i = (inputStream != null) ? inputStream.read(buffer) : 0;
            }

            outputStream.flush();
        } catch (IOException io) {
            // Display a message to the user
            Toast toast = Toast.makeText(context, "Could not save the file", Toast.LENGTH_SHORT);
            toast.show();
        } finally {
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException ex) {
                    // We should really never get this far, but we might consider adding a
                    // warning/log entry here...
                }
            }
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException ex) {
                    // We should really never get this far, but we might consider adding a
                    // warning/log entry here...
                }
            }
        }
    }
}