TextchangedEvent.js

 public textChanged(): void {
        if (isIOS) {
            if (this.textView) {
                if (this.textView.ios.contentSize.height > (100)) {
                    this.textViewHeight = 100;
                    this.textHeight = this.textView.ios.contentSize.height = 100 + this.contentSizeStartValue
                } else {
                    this.textViewHeight = this.textView.ios.contentSize.height;
                    this.textHeight = this.contentSizeStartValue + this.textView.ios.contentSize.height;
                }
            }
        } else {
            /* this.textHeight = this.textView.android.height > 100 ? 100 : this.textView.android.height;
             const textView: TextView = <TextView>this.page.getViewById('androidTextView');*/
            this.textHeight = 100;
        }
    }