自定义cell和控制器之间常用传值方式
1.代理传值(用的多)
在自定义cell的.h文件中制定协议,例:
@class OtherTableViewCell;
@protocol OtherTableViewCellDelegate <NSObject>
- (void)otherTableViewCell:(OtherTableViewCell *)tableViewCell clickDeleteButton:(UIButton *)sender;
@end
并且声明一个属性
@property(nonatomic,weak)id<OtherTableViewCellDelegate>delagate;
在自定义cell的.m文件中
#pragma mark - click delete button
- (void)clickDeleteButton:(UIButton *)sender
{
if ([_delagate respondsToSelector:@selector(otherTableViewCell:clickDeleteButton:)]) {
[_delagate otherTableViewCell:self clickDeleteButton:sender];
}
}
在控制器中,遵守该协议,实现协议方法
#pragma mark - OtherTableViewCellDelegate (click deleteButton)
- (void)otherTableViewCell:(OtherTableViewCell *)tableViewCell clickDeleteButton:(UIButton *)sender
{
//coding
}
2.block传值
在自定义cell的.h文件中声明block
typedef void (^DeleteButtonBlock) (UIButton *);
@property (nonatomic,copy) DeleteButtonBlock deleteButtonBlock;
在自定义cell的.m文件中
#pragma mark - click delete button
- (void)clickDeleteButton:(UIButton *)sender
{
if (_deleteButtonBlock) {
_deleteButtonBlock(sender);
}
}
在控制器中
__block ActivityDetailViewController* activityDetailViewController = self;
_activityDetailTopCell.deleteButtonBlock = ^(UIButton *button) {
//coding
};
3.通知传值
发通知:
[[NSNotificationCenter defaultCenter] postNotificationName:@"kNotify_Refresh_Comment object":nil userInfo:@{@"data":data}];
接受通知:
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(notificationReceived) name:@"kNotify_Refresh_Comment object" object:nil];
实现方法:
-(void)notificationReceived
{
//coding
}
移除通知
-(void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}