getProperty<TValue> method
获取指定 propertyKey
对应的属性
propertyKey
属性键
required
指定 propertyKey
对应属性是否必须存在,
其值为 true
时, 如 propertyKey
对应属性不存在则抛出异常
默认值为 false
Implementation
@override
BindableProperty<TValue>? getProperty<TValue>(Object propertyKey,
{bool required = false}) {
var property = _properties?[propertyKey] as BindableProperty<TValue>?;
if (required && property == null)
throw NotfoundPropertyException(propertyKey);
return property;
}