ios开发属性列表例子

来源：互联网发布：天知地知你知我知编辑：程序博客网时间：2024/05/22 01:46

//前面有部分参考别人的代码

-(NSString *)dataFilePath
{

{
    /*常量NSDocumentDirectory表明我们正在查找Documents目录路径，第二个常量NSUserDomainMask表示的是把搜索范围定在应用程序沙盒中，YES表示的是希望希望该函数能查看用户主目录*/

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    //  数组索引0处Documentd目录，
    NSString *documentDirectory = [paths objectAtIndex:0];
    //    返回一个kFileName的完整路径
    return [documentDirectory stringByAppendingPathComponent:@"mylist.plist"];//写自己喜欢的名字
}
- (void)viewDidLoad
{
    [super viewDidLoad];


    //  检查数据文件是否存在，不存在则不加载

}

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

- (IBAction)reshai:(id)sender {
    [IDtest resignFirstResponder];
}
- (IBAction)res:(id)sender {
    [NameText resignFirstResponder];
}

- (IBAction)save:(id)sender {

    NSString *filePath = [self dataFilePath];//调用前面的方法

    NSMutableArray *array=[[NSMutableArray alloc]init];


    [array addObject:IDtest.text];
    [array addObject:NameText.text];


    [array writeToFile:filePath atomically:YES];

     }






- (IBAction)load:(id)sender {

    NSString *filePath = [self dataFilePath];
    if ([[NSFileManager defaultManager]fileExistsAtPath:filePath]) {
        NSArray *array = [[NSArray alloc] initWithContentsOfFile:filePath];

        IDtest.text = [array objectAtIndex:0];
        NameText.text = [array objectAtIndex:1];

    }
    //    注册一个通知，按下home键，执行applicationWillResignActive:方法
    UIApplication *app = [UIApplication sharedApplication];
    [[NSNotificationCenter defaultCenter]addObserver:self
                                            selector:@selector(applicationWillResignActive:)
                                                name:UIApplicationWillTerminateNotification
                                              object:app];

}
@end

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