ios - 通过 ViewControllers 传递数据 - 进行设置页面

Question

所以我遇到这个问题已经有一段时间了，如果有人能带我走上正确的道路，我将不胜感激。基本上我正在制作一个应用程序，但有一个设置按钮。每当我启用我的 SegmentedControl 或 UISWITCH 时，我都会返回到默认状态。我还想有一个分段控件来更改颜色。我已经设置了颜色，但我想更改的所有信息都在 View Controller #1 上。基本上我如何制作一个设置页面来保留更改。到目前为止，这是我的代码。

- (IBAction)colorController:(id)sender {

if (Controller.selectedSegmentIndex == 0) {

    //App title text color
     appTitle.textColor =  [UIColor colorWithRed:1.00 green:1.00 blue:0.00 alpha:1.0];

    //Background color when selected
    Controller.tintColor = [UIColor colorWithRed:1.00 green:1.00 blue:0.00 alpha:1.0];

    //The font of the selected
    NSDictionary *fontColor = [NSDictionary dictionaryWithObjectsAndKeys:
                               [UIColor blackColor],NSForegroundColorAttributeName,
                               nil];
    [Controller setTitleTextAttributes:fontColor forState:UIControlStateSelected];



}
if (Controller.selectedSegmentIndex == 1) {

    //App title text color
    appTitle.textColor = [UIColor colorWithRed:0.00 green:0.66 blue:1.00 alpha:1.0];

    //Background color when selected
    Controller.tintColor = [UIColor colorWithRed:0.00 green:0.66 blue:1.00 alpha:1.0];

    //The font of the selected
    NSDictionary *fontColor = [NSDictionary dictionaryWithObjectsAndKeys:
                               [UIColor whiteColor],NSForegroundColorAttributeName,
                               nil];
    [Controller setTitleTextAttributes:fontColor forState:UIControlStateSelected];

}
if (Controller.selectedSegmentIndex == 2) {

    //App title text color
    appTitle.textColor = [UIColor colorWithRed:0.98 green:0.22 blue:0.22 alpha:1.0];

    //Background color when selected
    Controller.tintColor = [UIColor colorWithRed:0.98 green:0.22 blue:0.22 alpha:1.0];


    //The font of the selected
    NSDictionary *fontColor = [NSDictionary dictionaryWithObjectsAndKeys:
                               [UIColor whiteColor],NSForegroundColorAttributeName,
                               nil];
    [Controller setTitleTextAttributes:fontColor forState:UIControlStateSelected];
}
if (Controller.selectedSegmentIndex == 3) {

    //App title text color
    appTitle.textColor = [UIColor colorWithRed:0.15 green:0.82 blue:0.44 alpha:1.0];

    //Background color when selected
    Controller.tintColor = [UIColor colorWithRed:0.15 green:0.82 blue:0.44 alpha:1.0];

    //The font of the selected
    NSDictionary *fontColor = [NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor], NSForegroundColorAttributeName, nil];
    [Controller setTitleTextAttributes:fontColor forState:UIControlStateSelected];

}

现在您可以看到“appTitle”位于第一个 View Controller 上，因此它自动不起作用。我怎样才能解决这个问题。请将我链接到某个地方/以一种不复杂的方式向我展示。 (我也会有很多标签)

Answer 1

为此，我通常使用在文件级别声明的结构(不嵌套在任何类中)。因此，它应该可以在整个应用程序中访问。更改所选段时设置值；在加载 View Controller 时获取值。这是 Swift 中的示例:

struct setStruct {
    var selSeg: Int = 0
}
var settings = setStruct()

在设置View Controller viewDidLoad:

Controller.selectedSegmentIndex = settings.selSeg

在分段控件的 IBAction 中:

settings.selSeg = Controller.selectedSegmentIndex