iOS 代理使用

1.代理类

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@protocol InputViewDelegate <NSObject>

-(void)btnClick:(UIButton*)sender textNumer:(NSString*)str1 textNumber:(NSString*)str2;

@end

@interface InputView : UIView

@property (nonatomic,weak) id<InputViewDelegate> delegate;

@end

NS_ASSUME_NONNULL_END

#import "InputView.h"

@interface InputView()

@property (weak, nonatomic) IBOutlet UITextField *OneTextField;
@property (weak, nonatomic) IBOutlet UITextField *TwoTextField;

@end

@implementation InputView

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/
- (IBAction)btnClick:(UIButton *)sender {
    
    if ([self.delegate respondsToSelector:@selector(btnClick: textNumer: textNumber:)]) {
        // 调用代理对象的登录方法，代理对象去实现登录方法
            [self.delegate btnClick:sender textNumer:self.OneTextField.text textNumber:self.TwoTextField.text];
    }   
}

@end

2.使用类

#import "PlanCtl.h"
@interface PlanCtl ()<InputViewDelegate>

@property (nonatomic,strong) InputView *inputView;

@end

@implementation PlanCtl

-(__kindof UIView *)inputView
{
    if (_inputView == nil) {
        _inputView = [[[NSBundle mainBundle] loadNibNamed:@"InputView" owner:nil options:nil] lastObject];
        _inputView.delegate = self;
    }
    return _inputView;
}
// InputViewDelegate
-(void)btnClick:(UIButton *)sender textNumer:(NSString *)str1 textNumber:(NSString *)str2
{
}

@end