我有使用 for 循环创建的动态 UISwitches。我为每个控件赋予标签值以具有标识。后面想达到这些值，但是每次都得到0。我做错了什么？
for(int i = 0;i < self.extraArray.count; i++) {
ProductPropertiesModel *model = (ProductPropertiesModel *)[self.extraArray objectAtIndex:i];
UISwitch *switchButton = [[UISwitch alloc] initWithFrame:CGRectZero];
switchButton.translatesAutoresizingMaskIntoConstraints = false;
switchButton.tag = [model Id];
[switchButton setOn:NO];
[self.view addSubview:switchButton];
[switchButton addTarget:self action:@selector(setState:)
forControlEvents:UIControlEventValueChanged];
}
-(void)setState:(id)sender
{
UISwitch *uiswitch = (UISwitch *)sender;
NSInteger tagInteger= uiswitch.tag;
NSLog(@"%@", [NSString stringWithFormat:@"%li",(long)tagInteger]);
}
标签值为0，但这是错误的。
最佳答案
我发现了问题。我刚刚打错字了。我发现我在获取json数据时写错了。我注意到写的是 Id 而不是 id。
NSError *jsonError;
self.extraJsonArray = nil;
self.extraJsonArray = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&jsonError];
self.extraArray = [[NSMutableArray alloc]init];
for(int j = 0;j < self.extraJsonArray.count;j++){
@try {
//NSInteger *Id = (NSInteger *)[(NSNumber *)[[self.extraJsonArray objectAtIndex:j]objectForKey:@"Id"] integerValue]; Problem is here
NSInteger *Id = (NSInteger *)[(NSNumber *)[[self.extraJsonArray objectAtIndex:j]objectForKey:@"id"] integerValue];
double price = (double)[(NSNumber *)[[self.extraJsonArray objectAtIndex:j] objectForKey:@"price"] doubleValue];
NSString *property =(NSString *)[[self.extraJsonArray objectAtIndex:j] objectForKey:@"property"];
ProductPropertiesModel *model = [[ProductPropertiesModel alloc] init];
[model setId:Id];
[model setProperty:property];
[model setPrice:price];
[model setChecked:@"No"];
[self.extraArray addObject:model];
} @catch (NSException *exception) {
NSLog(@"%@", exception.reason);
} @finally {
}
}
关于ios - 如何为 UISwitch 设置/获取标签值 (NSInteger)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55649892/