将变量发送到添加的子视图视图控制器
我知道如何从您的父视图中检索变量...... 这是通过做这样的事情
[(mainViewController *)[self.superview] variableName];
但现在我想知道如何将变量数据发送到子视图...
特别是如果我在 screenTwo 中执行类似的操作
ScreenTwoViewController *screen2 = [[ScreenTwoViewController alloc] init];
...
...
[self.addSubview:screen2.view];
，我有一个变量名称消息：
我想将变量消息发送到实际视图，以便它可以显示该视图中的消息基于将 screen2 视图添加为子视图时父视图发送的内容？
I know how to retrieve variables from your parent view...
which is by doing something like this
[(mainViewController *)[self.superview] variableName];
but now i would like to know how to send variable data to a subview...
specially if i do something like this
ScreenTwoViewController *screen2 = [[ScreenTwoViewController alloc] init];
...
...
[self.addSubview:screen2.view];
in screenTwo i have a variable name Message:
I would like to send a variable message to the actual view so it can display the message in that view based on what the parent view sends it when adding the screen2 view as a subview??
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评论（3）
好吧，如果您已经像这样在子视图中设置了变量的属性。
<代码>
@property (非原子，保留) NSString *message;
并将其合成到您的 .m 文件中，这样您就可以始终使用此
screen2.message = [[NSString alloc] initWithFormat:@"使用你想要的初始化方法"];
并且不要忘记在方法结束之前释放 screen2 以避免内存泄漏
Well if you have set the property for the variables in the subview like this.
@property (nonatomic, retain) NSString *message;
and also synthesis it in your .m file than you can always use this
screen2.message = [[NSString alloc] initWithFormat:@"use what ever init methode that you want"];
and dont forget to release the screen2 before the end of the method to avoid memory leaks
你有
Message的 setter 吗？如果不是的话，它是财产吗？不管怎样，我都会有一个 getter 方法setMessage:(NSString *)msg，其实现如下：这样，您就可以将变量的赋值与视图的更新联系起来。
Do you have a setter for
Message? If not, is it a property? Either way, I would have a getter method,setMessage:(NSString *)msgwith the following implementation:This way, you're tying the assignment of the variable with the update of the view.
您可以为 ScreenTwoViewController 创建一个新的 init 方法。例如，
- (id) initWithMessage:(NSString *)message。要更新消息，只需创建一个 setter 方法
- (void)setMessage:(NSString *)newMessage。You could create a new init method for
ScreenTwoViewController. For example,- (id) initWithMessage:(NSString *)message.To update the message just create a setter method
- (void)setMessage:(NSString *)newMessage.