简单的数据存储

//
//  ViewController.h
//  datastore
//
//  Created by Rayln Guan on 9/25/13.
//  Copyright (c) 2013 Rayln Guan. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
@property (weak, nonatomic) IBOutlet UITextField *username;
@property (weak, nonatomic) IBOutlet UITextField *password;
- (IBAction)save:(id)sender;
- (IBAction)read:(id)sender;
- (NSString *)getFilepath;
@end

//
//  ViewController.m
//  datastore
//
//  Created by Rayln Guan on 9/25/13.
//  Copyright (c) 2013 Rayln Guan. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    [self.username setText:nil];
    [self.password setText:nil];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)save:(id)sender {
    NSString *path = [self getFilepath];
    NSArray *dic = [[NSArray alloc] initWithObjects:self.username.text, self.password.text, nil];
    [dic writeToFile:path atomically:YES];
}

- (IBAction)read:(id)sender {
    NSString *path = [self getFilepath];
    NSArray *arr = [[NSArray alloc] initWithContentsOfFile:path];
    self.username.text = [arr objectAtIndex:0];
    self.password.text = [arr objectAtIndex:1];
}

- (NSString *)getFilepath{
    NSArray *arr = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    return [[arr objectAtIndex:0] stringByAppendingPathComponent:@"data11.plist"];
    //return [[NSBundle mainBundle] pathForResource:@"data" ofType:@"plist"];
}
@end