キーボードの上にあるテキスト入力フィールドを非表示にするかどうか
This property is applicable for single line
text fields that have assigned keyboard with alphanumeric keys.
When TouchScreenKeyboard.hideInputs is set to true, the only type of keyboard that can be opened is TouchScreenKeyboardType.Default. This type of keyboard will be opened even if other types are specified to be opened.
Android: There's no reliable way of hiding input field, thus when this property is true the input field is rendererd outside the screen, this gives an illusion that it's hidden.