【发布时间】:2015-10-11 12:48:55
【问题描述】:
我正在为多个UIButtons 添加相同的选择器,它们是UITableViewCell 的一部分,它仅适用于第一个。我错过了什么吗?
这是我的代码:
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{
NSDictionary *d = [tableData objectAtIndex:indexPath.row];
NSArray *answers = [d objectForKey:@"answers"];//array of { id = 35; text = "\U03c4\U03a\U03c0\U03bf\U03c4\U03b1"; }
UILabel *startDate = (UILabel *)[cell viewWithTag:100];
long long startDateEpoch = [[d objectForKey:@"startDate"] longLongValue];
NSDate *sDate = [NSDate dateWithTimeIntervalSince1970:startDateEpoch/1000];
NSDateFormatter *startDateFormatter = [[NSDateFormatter alloc] init];
[startDateFormatter setDateFormat:@"dd/MM/yyyy"];
startDate.text = [startDateFormatter stringFromDate:sDate];
((UILabel *)[cell viewWithTag:101]).text = [d objectForKey:@"subject"];
NSArray *tags = [d objectForKey:@"tags"];
((UILabel *)[cell viewWithTag:102]).text = [tags componentsJoinedByString:@" "];
NSString *imageURL = [d objectForKey:@"media"];
UIImageView *iv = (UIImageView *)[cell viewWithTag:103];
iv.contentMode = UIViewContentModeScaleAspectFit;
[iv sd_setImageWithURL:[NSURL URLWithString:imageURL]
placeholderImage:[UIImage imageNamed:@"placeholder.png"]];
UIView *buttonsContainer = (UIView *)[cell viewWithTag:104];
for(UIView *vv in buttonsContainer.subviews){
[vv removeFromSuperview];
}
int index = 0;
NSLog(@"buttonsContainer children: %d", buttonsContainer.subviews.count);
for(NSDictionary *answer in answers){
UIView *v = [[UIView alloc] initWithFrame:CGRectMake(0, index * 40 + (index+1)*5, [UIScreen mainScreen].bounds.size.width, 40)];
v.backgroundColor = [UIColor whiteColor];
CGRect labelFrame = v.frame;
labelFrame.origin.y = 0;
UILabel *l = [[UILabel alloc] initWithFrame:labelFrame];
l.text = (NSString *)[answer objectForKey:@"text"];
l.textAlignment = NSTextAlignmentCenter;
UIView *bottomLine = [[UIView alloc] initWithFrame:CGRectMake(0, v.frame.size.height - 1, v.frame.size.width, 1)];
bottomLine.backgroundColor = [UIColor colorWithRed:238.0/255.0 green:205.0/255.0 blue:103.0/255.0 alpha:1.0];
UIButton *b = [[UIButton alloc] initWithFrame:v.frame];
[b addTarget:self action:@selector(answered:) forControlEvents:UIControlEventTouchUpInside];
[v addSubview:l];
[v addSubview:bottomLine];
[v addSubview:b];
[buttonsContainer addSubview:v];
index++;
}
}
例如,如果添加了 4 个按钮,则仅当我单击第一个按钮时才会调用选择器。当我点击其他三个时,什么也没有发生。
编辑:
添加answered: 代码:
- (void)answered:(UIButton *)sender
{
NSLog(@"@answered");
}
【问题讨论】:
-
您是否尝试在选择器上设置断点?你能提供它的代码吗?
-
所有这些都在 willDisplayCell 中,而不是在 cellForRowAtIndexPath 中?你不希望这个单元格被重用后会出现一些奇怪的问题吗?
-
是的,请分享
self answererd:的代码 -
我很确定答案:没有调用按钮(除了第一个 ofc),因为我把日志记录在那里
-
当您点击未调用您的已回答方法的按钮时,您能否判断该按钮是否实际被按下? (点击时文本颜色会改变吗?)如果按钮在其父级的边界之外,它将无法点击,即使它可能呈现得很好(剪裁关闭)。
标签: ios objective-c cocoa-touch uibutton selector