Trait UIPickerViewDataSource 

pub unsafe trait UIPickerViewDataSource: NSObjectProtocol + MainThreadOnly {
    // Provided methods
    fn numberOfComponentsInPickerView(
        &self,
        picker_view: &UIPickerView,
    ) -> NSInteger
       where Self: Sized + Message { ... }
    fn pickerView_numberOfRowsInComponent(
        &self,
        picker_view: &UIPickerView,
        component: NSInteger,
    ) -> NSInteger
       where Self: Sized + Message { ... }
}

Available on crate feature UIPickerView only.

Apple’s documentation

Provided Methods

fn numberOfComponentsInPickerView( &self, picker_view: &UIPickerView, ) -> NSInteger

where Self: Sized + Message,

Available on crate features UIResponder and UIView only.

fn pickerView_numberOfRowsInComponent( &self, picker_view: &UIPickerView, component: NSInteger, ) -> NSInteger

where Self: Sized + Message,

Available on crate features UIResponder and UIView only.

Trait Implementations

impl<T> ImplementedBy<T> for dyn UIPickerViewDataSource

where T: ?Sized + Message + UIPickerViewDataSource,

impl ProtocolType for dyn UIPickerViewDataSource

const NAME: &'static str = "UIPickerViewDataSource"

The name of the Objective-C protocol that this type represents.

fn protocol() -> Option<&'static AnyProtocol>

Get a reference to the Objective-C protocol object that this type represents.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T> UIPickerViewDataSource for ProtocolObject<T>

where T: ?Sized + UIPickerViewDataSource,

Implementors