Sectioned Table Extension

All Sectioned Table extension classes must extend the IView interface.

The return value of the view() method must be a subclass of a native view (i.e. a subclass of UIView for iOS or android.view.View for Android) for section/table and form cell extensions. The viewIsNative() must also be overridden to return true.

Example

// file: MyExtensionView.ts
import * as app from 'tns-core-modules/application';
import { Color } from 'tns-core-modules/color';
import { IView } from 'mdk-core/IView';

export class MyExtensionView extends IView {
  private _label: any;
  private _value: any;

  public initialize(props) {
    super.initialize(props);
    const color = new Color('yellow');
    if (this.definition().data.ExtensionProperties.Prop1) {
      this._value = this.definition().data.ExtensionProperties.Prop1.Value;
    }
    else {
      this._value = "Default Value";
    }
    if (app.ios) {
      this._label = UILabel.alloc().init();
      this._label.numberOfLines = 3;
      this._label.backgroundColor = color.ios;
    } else {
      this._label = new android.widget.TextView(this.androidContext());
      this._label.setBackgroundColor(color.android);
    }
  }

  public view() {
    //Use provided ValueResolver to resolve value to support bindings, rules, etc in your extension
    this.valueResolver().resolveValue(this._value).then((resolvedValue)=> {
      if (app.ios) {
        this._label.text = resolvedValue;
      } else {
        this._label.setText(resolvedValue);
      }
    });
    return this._label;
  }

  public viewIsNative() {
    return true;
  }
}

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Last update: April 14, 2021