|
public static Subscribe ( |
||
| obj | ||
| selector | string | |
| callback | EventHandler | |
| return | void | |
public NSObject AddObserver(string name, Action <NSNotification> action, NSObject fromObject = null)
{
var handler = new Observer(action);
Callbacks.Subscribe(handler, SelectorName, n => action(Runtime.GetNSObject <NSNotification>(n)));
ObjC.MessageSend(Handle, Selector.GetHandle("addObserver:selector:name:object:"), handler.Handle, Selector.GetHandle(SelectorName), name, fromObject == null ? IntPtr.Zero : fromObject.Handle);
return(handler);
}
public NSObject AddObserver(string name, Action <NSNotification> action, NSObject fromObject = null)
{
Observer observer = new Observer(action);
Callbacks.Subscribe(observer, "__onNotification:", delegate(IntPtr n)
{
action(Runtime.GetNSObject <NSNotification>(n));
});
ObjC.MessageSend(Handle, Selector.GetHandle("addObserver:selector:name:object:"), observer.Handle, Selector.GetHandle("__onNotification:"), name, fromObject?.Handle ?? IntPtr.Zero);
return(observer);
}
public void SaveToPhotosAlbum(Action <NSError> callback = null)
{
if (callback == null)
{
UIImageWriteToSavedPhotosAlbum(Handle, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
}
else
{
UIImageDispatcher dispatcher = new UIImageDispatcher(callback);
Callbacks.Subscribe(dispatcher, "__onSaveToPhotoAlbum:", delegate(IntPtr obj, IntPtr e, IntPtr ctx)
{
callback((e == IntPtr.Zero) ? null : Runtime.GetNSObject <NSError>(e));
dispatcher.Dispose();
});
UIImageWriteToSavedPhotosAlbum(Handle, dispatcher.Handle, ObjC.GetSelector("__onSaveToPhotoAlbum:"), IntPtr.Zero);
}
}