Discover the method to access the Stacklayout's ID programmatically in NativeScript

As a beginner to nativescript, I am struggling to properly retrieve the stacklayout id. Currently, I am working on Angular2 with typescript and have attempted the following code snippet. Regrettably, I encountered this issue in the command prompt:

JS:Error TypeError : Cannot set property 'visiblility' of undefined  Context[object Object]

Html Structure:

<StackLayout #target visibility="collapse" id="stackLayout"> ..... </StackLayout>

I aim to change the visibility of the stacklayout programmatically upon clicking a button.

Typescript Implementation:

public stackLayout: StackLayout;

onTap(args: EventData) {

    this.animate();
}

public animate() {

   this.stackLayout.visibility = "visible"; 
}

Answer №1

To access the StackLayout programmatically, you can use the Google @ViewChild method. However, it may be simpler to reorganize your code slightly. Here is a simplified version:

HTML:

<StackLayout (tap)="stackTapped()" [visibility]="stackVisible ? 'visible' : 'collapsed'"></StackLayout>

or:

<StackLayout (tap)="stackTapped()" *ngIf="stackVisible"></StackLayout>

Component:

stackVisible = false;

stackTapped(): void {
  this.stackVisible = true;
}

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