iOS：从子类中的超类覆盖setter属性

Question

I need to override setter of super class in my subclass

SuperClass:

Interface Public:

 @property (weak, nonatomic) UIView *mediaView;

Implementation:

 - (void)setMediaView:(UIView *)mediaView
{
 // some code
}

SubClass:

Implementation:

 - (void)setMediaView:(UIView *)mediaView
{
 // some code
 _mediaView = mediaView; --- ERROR: Use of undeclared identifier '_mediaView'
 // some code 
}

How can I fix it? I need to set this property directly

Answer 1

解决了子类中的代码

 @synthesize mediaView = _mediaView;

Answer 2

Use "super" keyword.

- (void)setMediaView:(UIView *)mediaView {
    [super setMediaView:mediaView];
}