Go to nstimer to pass the Parameter

Nsmutabledictionary *Dict= [[Nsmutabledictionary alloc] init];

 

If (oldview! = Nil)

{

[DictSetobject: oldview forkey: @ "oldview"];

}

If (newview! = Nil)

{

[DictSetobject: newview forkey: @ "newview"];

}

[NstimerScheduledtimerwithtimeinterval: 0.0 target: Self selector: @ selector (Ontimer:)Userinfo:DictRepeats: No];

[Dict release];

 

 

-(Void) ontimer :(Nstimer *) Timer

{

Uiview * oldview = [[TimerUserinfo] Objectforkey: @ "oldview"];

Uiview * newview = [[TimerUserinfo] Objectforkey: @ "newview"];

[Uiview animatewithduration: 2.0 delay: 0

Options: uiviewanimationoptionallowuserinteraction

Animations: ^ {

Oldview. Alpha = 0.0;

Newview. Alpha = 1.0;

}

}

As shown in the preceding figure,NstimerIn @ selector (Ontimer:) When passing parameters, the object for passing parameters is stored inNstimerIn the userinfo dictionary, In-(void) ontimer :(Nstimer *) Timer

Use the dictionary.

In fact, this is the general form of passing parameters to the @ selector object on the iPhone.

 

Go to nstimer to pass the Parameter