iOS接口回调模式

最新推荐文章于 2022-12-19 17:11:43 发布

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最新推荐文章于 2022-12-19 17:11:43 发布

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分类专栏： iOS开发交流文章标签： objective-c ios开发 datepicker

本文链接：https://blog.youkuaiyun.com/qq_22863121/article/details/52860815

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首先声明我是一个Android开发工程师，由于公司项目需要，我暂时转变成为了iOS开发，今天下午在做项目时，遇到的iOS接口回调，颇有些心得，分享给大家～～～

废话不多说，直接上代码：

在AlertDatePicker.h文件中

@class AlertDatePicker;

@protocol DatePickerViewDelegate <NSObject>      

@required
- (void)datePickerView:(AlertDatePicker *)pickerView didSelecteDate:(NSString *)string andUILabel:(NSString *)uiLabelString;

@optional
- (void)datePickerDidCancelSelect:(AlertDatePicker *)pickerView;

@end

@interface AlertDatePicker:TenementAlertView

- (instancetype)initWithDelegate:(id)delegate initTitle:(NSString *)title maxDate:(NSString *)maxDate minDate:(NSString *)minDate;

@end

@protocol是定义接口名称

@required在实现接口类中必须要实现的方法

@optional在实现接口类中必须要实现的方法

在AlertDatePicker.m文件中

-(void)confirmButtonPressed:(id)sender{
    [super confirmButtonPressed:sender];
    if ([self.delegate respondsToSelector:@selector(datePickerView:didSelecteDate:andUILabel:)]) {
         NSString *dateString=[DateUtil stringFromDay:_datePicker.date];
        [self.delegate datePickerView:self didSelecteDate:dateString andUILabel:dateString];
    }
}

-(void)cancelButtonPressed:(id)sender{
    [super cancelButtonPressed:sender];
    if ([self.delegate respondsToSelector:@selector(datePickerDidCancelSelect:)]) {
        [self.delegate datePickerDidCancelSelect:self];
    }

}

<span style="background-color: rgb(255, 255, 255);">首先在文件中查看接口类中有没有该方法[self.delegate respondsToSelector:@selector(datePickerView:didSelecteDate:andUILabel:)]</span>

接口被调用

[self.delegate datePickerView:self didSelecteDate:dateString andUILabel:dateString];

实现接口的类中：

@interface ContractSignedViewController ()<DatePickerViewDelegate>


//绑定接口
 AlertDatePicker *alertDatePicker=[[AlertDatePicker alloc]initWithDelegate:self initTitle:@"选择入住日" maxDate:[DateUtil stringFromDay:[NSDate dateWithTimeInterval:7*24*60*60 sinceDate:[DateUtil dayFromString:_enterDate.text]]] minDate:_enterDate.text];
    [alertDatePicker show:YES];


#pragma mark  DatePickerViewDelegate  实现接口
-(void)datePickerView:(AlertDatePicker *)pickerView didSelecteDate:(NSString *)string andUILabel:(NSString *)uiLabelString{
    NSLog(@"%@,%@",string,uiLabelString);
}

-(void)datePickerDidCancelSelect:(AlertDatePicker *)pickerView{
    //点击“取消“暂时不做处理
}

分享的比较粗糙，还在慢慢学习～～～