我想从myrenderer
将一系列对象发送回MyViewControllerMyrenderer.h:
@protocol myProtocol;
@interface myRenderer : NSObject
@property (weak) id <myProtocol> myDelegate;
@end
@protocol myProtocol <NSObject>
- (void)sendToMyViewController : (NSMutableArray *) objects;
@end
MyRenderer.mm(C /Objective-C代码):
@implementation myRenderer
@synthesize myDelegate;
.
.
.
-(void) sendObjects
{
[myDelegate sendToMyViewController : objects];
Problem:
myDelegate is always <nil>; = (id) 0x0
}
.
.
.
@end
在myviewcontroller.h中:
@interface myViewController : UIViewController <myProtocol>
.
.
.
@end
在myViewController.m中:
@implementation myViewController
.
.
.
- (void)viewDidLoad
{
renderer = [[MyRenderer alloc] init];
renderer.myDelegate = self;
}
.
.
.
-(void) sendToMyViewController : (NSMutableArray *) objects
{
// do something with objects
Problem:
this method is never called !!!
}
.
.
.
@end
问题:Mydelegate总是无零的;等于(id)0x0和SendTomyViewController从未打电过。
感谢您的任何帮助。
已解决!
@crd谢谢您的提示!
确实存在多个myrender实例,将它们简化为一个实例解决了问题。