android拷贝sqlite数据库到本地sd卡的方法

	/**
	 * 拷贝数据库到sd卡
	 * 
	 * @deprecated 
	 */
	public static void copyDataBaseToSD(){
		 if (!Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
       return ;
     }
		 File dbFile = new File(MvpApplication.getApplication().getDatabasePath("dandy")+".db");
		 File file = new File(Environment.getExternalStorageDirectory(), "seeker.db");
		 
		 FileChannel inChannel = null,outChannel = null;
		 
		 try {
			file.createNewFile();
			inChannel = new FileInputStream(dbFile).getChannel();
			outChannel = new FileOutputStream(file).getChannel();
			inChannel.transferTo(0, inChannel.size(), outChannel);
		} catch (Exception e) {
			LogUtils.e(TAG, "copy dataBase to SD error.");
			e.printStackTrace();
		}finally{
			try {
				if (inChannel != null) {
					inChannel.close();
					inChannel = null;
				}
				if(outChannel != null){
					outChannel.close();
					outChannel = null;
				}
			} catch (IOException e) {
				LogUtils.e(TAG, "file close error.");
				e.printStackTrace();
			}
		}
	}