Creates the specified toFile as a byte for byte copy of the fromFile. - Android java.io

Android examples for java.io:FileInputStream

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Description

Creates the specified toFile as a byte for byte copy of the fromFile.

Demo Code

import android.os.Environment;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.channels.FileChannel;

public class Main{

    /**//w ww  .ja va  2 s .c o m
     * Creates the specified toFile as a byte for byte copy of the
     * fromFile. If toFile already exists, then it
     * will be replaced with a copy of fromFile. The name and path
     * of toFile will be that of toFile.<br/>

     * 
     * @param fromFile
     *            - FileInputStream for the file to copy from.
     * @param toFile
     *            - FileInputStream for the file to copy to.
     */
    public static void copyFile(FileInputStream fromFile,
            FileOutputStream toFile) {
        FileChannel fromChannel = null;
        FileChannel toChannel = null;
        try {
            fromChannel = fromFile.getChannel();
            toChannel = toFile.getChannel();
            try {
                fromChannel.transferTo(0, fromChannel.size(), toChannel);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        } finally {
            try {
                if (fromChannel != null) {
                    fromChannel.close();
                }
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } finally {
                if (toChannel != null) {
                    try {
                        toChannel.close();
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }
            }
        }
    }

}

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