Expanding NativeScript feature - Implement SetNativeView

I am interested in expanding the functionality of the NativeScript Switch UI component by creating a custom directive for it.

@Directive({
    selector: "CustomSwitch"
})
export class CustomSwitch extends Switch {
    constructor() {
        super();
        // Implement custom events here
        if (isIOS) {
            // Modify background and other properties here.
        }
    }
}

It seems that the ViewBase class has a method named setNativeView. Can someone provide an example of how this can be achieved and suggest the best approach?

While CSS is useful for global styling, I also require the capability to extend the component to expose custom events.

Answer №1

When working with NativeScript components and Angular features, it's important to differentiate between the two. If you require a directive, there's no need to extend Switch or any other {N} component.

Simply apply the selector and inject the ElementRef into your constructor. This will point to the specific element (such as Switch) that the selector is applied to, allowing you to easily modify its background color. It's similar to how you would do this in Angular Web apps.

@Directive({
  selector: "CustomSwitch"
})
export class CustomSwitchDirective implements AfterViewInit {
  constructor(private el: ElementRef) { }

  ngAfterViewInit() {
    const switch = <Switch>this.el.nativeElement;
    switch.backgroundColor = "red";
  }
}

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