Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
385 views
in Technique[技术] by (71.8m points)

properties - How to access a property of a viewcontroller from another one? iPhone

I define a property in the viewcontroller A

  @property (nonatomic) BOOL updateOnServer;

and also synthesize it, give it values and then I try to access this variable from another viewcontroller B like this

  A * view = [[A alloc] init];

  if (view.updateOnServer)

but it isn't working. updateOnServer is always NO.

Does anybody have an idea on how to solve this?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

You set updateOnServer within viewControllerA, and in viewControllerB you create a new instance of updateOnServer which you haven't set to anything. So it takes the default value of BOOL which is NO.

Kindly look here for possible solution.

You have many ways to do : make the variable global, static, singleton, pass as an argument, post as notification.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...