nsarray writetofile返回“已弃用”-iPhone SDK

我正在尝试在应用程序关闭时将一些设置保存到plist文件中,然后在应用程序启动时加载这些设置。我在一个名为数组的数组中保存了4个数字。加载工作正常,因为如果我更改了文件,应用程序将以更改文件的方式启动。

此代码工作正常:

- (void)LoadSettings {
NSString *path = [[NSBundle mainBundle] bundlePath];
NSString *finalPath = [path stringByAppendingPathComponent:kSaveFileLocation];
NSArray *array = [[NSArray alloc] initWithContentsOfFile:finalPath];
clockFaceImageSlider.value = [[array objectAtIndex:0] integerValue];
HourTypeSwitch.on = [[array objectAtIndex:1] integerValue];
touchRotationSwitch.on = [[array objectAtIndex:2] integerValue];
accelerometerRotationSwitch.on = [[array objectAtIndex:3] integerValue];
}

此代码一直到保存行:

- (void)SaveSettings {
    NSString *path = [[NSBundle mainBundle] bundlePath];
    NSString *finalPath = [path stringByAppendingPathComponent:kSaveFileLocation];
    NSArray *array = [[NSArray alloc] initWithObjects:[NSNumber numberWithInt:clockFaceImageSlider.value], [NSNumber numberWithInt:HourTypeSwitch.on], [NSNumber numberWithInt:touchRotationSwitch.on], [NSNumber numberWithInt:accelerometerRotationSwitch.on], nil];

    if (![array writeToFile:finalPath atomically:YES]) {
        NSLog(@"error");
    }
    //The log does print error
}

有人知道我怎样才能把它保存到困境中吗?

谢谢