EnterprisegongziClient/src/com/ideabobo/tool/FileTool.java

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package com.ideabobo.tool;

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

import android.content.Context;
import android.os.AsyncTask;
import android.os.Environment;
import android.util.Log;

public class FileTool extends AsyncTask<String, Void, Integer>{
	private static final String COMMAND_BACKUP = "backupDatabase";
    public static final String COMMAND_RESTORE = "restroeDatabase";
    private Context mContext;

    public FileTool(Context context) {
        this.mContext = context;
    }

    @Override
    public Integer doInBackground(String... params) {
        // TODO Auto-generated method stub
    	// 获得正在使用的数据库路径，我的是 sdcard 目录下的 /dlion/db_dlion.db
    	 // 默认路径是 /data/data/(包名)/databases/*.db
//        File dbFile = mContext.getDatabasePath(Environment
//                .getExternalStorageDirectory().getAbsolutePath()
//                + "/dlion/db_dlion.db");
        File dbFileDir = mContext.getDatabasePath("/data/data/com.ideabobo.gap/");
        File exportDir = new File(Environment.getExternalStorageDirectory(),
                "ideaback/");
        if (!exportDir.exists()) {
            exportDir.mkdirs();
        }
        String command = params[0];
        if (command.equals(COMMAND_BACKUP)) {
            try {
                copyDirectiory(dbFileDir.getAbsolutePath(), exportDir.getAbsolutePath());
                return Log.d("backup", "ok");
            } catch (Exception e) {
                // TODO: handle exception
                e.printStackTrace();
                return Log.d("backup", "fail");
            }
        } else if (command.equals(COMMAND_RESTORE)) {
            try {
            	copyDirectiory(exportDir.getAbsolutePath(), dbFileDir.getAbsolutePath());
                return Log.d("restore", "success");
            } catch (Exception e) {
                // TODO: handle exception
                e.printStackTrace();
                return Log.d("restore", "fail");
            }
        } else {
            return null;
        }