UItextView 和 NSString
我有一个奇怪的错误。
MyController A
{
@ syntesize myUITextView;
}
MyController B {
MyControllerA *controller = ....
NSSTring *myString = " hello";
controller.myUITextView.text = myString;
NSLog(@"%@",myUITextView.text) = (null)
NSLog(@"%@",myString) = hello
}
当我打印controller.myUITextView时它是空的，请问我做错了什么？
谢谢四位的回答
I have a strange error.
MyController A
{
@ syntesize myUITextView;
}
MyController B {
MyControllerA *controller = ....
NSSTring *myString = " hello";
controller.myUITextView.text = myString;
NSLog(@"%@",myUITextView.text) = (null)
NSLog(@"%@",myString) = hello
}
when i print controller.myUITextView it's null, what i am doing wrong, please ?
thanks four your answers
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NSSTring *myString = " hello";"hello"不是 ObjectiveC 字符串，而是 C 字符串。您应该在前面添加@，如下所示：@"hello"NSSTring *myString = " hello";"hello"is not an ObjectiveC string, it's a C string. You should add@before like this:@"hello"试试这个
Try this
看来您没有记录您认为正在记录的内容。此行...
缺少控制器变量前缀，因此应该是：
It looks like you're not logging what you think you're logging. This line...
is missing the controller variable prefix so it should be:
您确定在
MyController A中正确初始化了myUITextView（或在 Interface Builder 中绑定了它）吗？似乎controller.myUITextView为零。Are you sure that you initialize
myUITextViewinMyController A(or bind it in Interface Builder) properly? Seems likecontroller.myUITextViewis nil.