FileUtils.java

package com.myMinistry.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;

import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.support.v4.content.ContextCompat;

public class FileUtils {
	public static void copyFile(File fromFile, File toFile) throws IOException {
		FileInputStream fromFileStream = new FileInputStream(fromFile);
		FileOutputStream toFileStream = new FileOutputStream(toFile);
		FileChannel fromChannel = fromFileStream.getChannel();
		FileChannel toChannel = toFileStream.getChannel();
		try {
			fromChannel.transferTo(0, fromChannel.size(), toChannel);
		} finally {
			if (fromChannel != null)
				fromChannel.close();
			if (toChannel != null)
				toChannel.close();

			fromFileStream.close();
			toFileStream.close();
		}
	}
	
	@TargetApi(Build.VERSION_CODES.FROYO)
	public static File getExternalDBFile(Context context, String fileName) {
		if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) {
			return new File(context.getExternalFilesDir(null), fileName);
		}
		else {
			File[] extDBPath = ContextCompat.getExternalFilesDirs(context, null);
			if(extDBPath != null) {
				if(!extDBPath[0].exists()) {
					extDBPath[0].mkdirs();
				}
				return new File(extDBPath[0], fileName);
			}
		}
		return null;
	}
}