Question

我之前已经问过这个问题，但没有收到回复。所以我再问一遍！

我有4个这样的单选按钮：

- (IBAction)optWine:(id)sender {
    ChangeLabel.text =  @"Hint: try a partial phrase such as 'cab' to find information on the single-vineyard cabernet's made at the Arcadian Winery";


}

- (IBAction)optWinery:(id)sender {

    ChangeLabel.text = @"Hint: try a phrase such as 'arc' to find the beautiful Arcadian Winery in Lompac, California.";

}


- (IBAction)optGrape:(id)sender {
    ChangeLabel.text = @"Hint: type partial phrases such as 'zin' for Zinfandel grape";

}

- (IBAction)optReview:(id)sender {
    ChangeLabel.text = @"Hint: try a partial phrase such as 'arc' to check-out reviews on wines by the Arcadian Winery";


}

...我还有其他4个动作按钮：

- (IBAction)btnSearchWineries:(id)sender {

WineriesViewController *review = [[WineriesViewController alloc] initWithNibName:nil bundle:nil];
review.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentViewController:review animated:YES completion:NULL];


}
- (IBAction)btnSearchGrapes:(id)sender {

GrapesViewController *review = [[GrapesViewController alloc] initWithNibName:nil bundle:nil];
review.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentViewController:review animated:YES completion:NULL];



}
- (IBAction)btnSearchWines:(id)sender {
WinesViewController *review = [[WinesViewController alloc] initWithNibName:nil bundle:nil];
review.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentViewController:review animated:YES completion:NULL];
}

- (IBAction)btnSearchReviews:(id)sender {
ReviewsViewController *review = [[ReviewsViewController alloc] initWithNibName:nil bundle:nil];
review.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentViewController:review animated:YES completion:NULL];

}

根据按下哪个单选按钮，我想更改单个按钮以执行4个搜索按钮之一的激活。像这样的东西，但这不起作用：

-(IBAction)btnSearch:(id)sender
{
switch (((UIButton *)sender).tag) {
    case 1:
    {

        WinesViewController *review = [[WinesViewController alloc] initWithNibName:nil bundle:nil];
        review.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
        [self presentViewController:review animated:YES completion:NULL];
        break;
    }

    case 2:
    {
        WineriesViewController *review = [[WineriesViewController alloc] initWithNibName:nil bundle:nil];
        review.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
        [self presentViewController:review animated:YES completion:NULL];
        break;
    }
        break;
    case 3:
    {
        GrapesViewController *review = [[GrapesViewController alloc] initWithNibName:nil bundle:nil];
        review.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
        [self presentViewController:review animated:YES completion:NULL];
        break;
    }
    case 4:
    {
        ReviewsViewController *review = [[ReviewsViewController alloc] initWithNibName:nil bundle:nil];
        review.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
        [self presentViewController:review animated:YES completion:NULL];
        break;
    }

    default:
        break;
}

}

我在IB中分配了标签但没有任何反应。我也尝试为各个按钮分配标签，没有任何反应。我尝试在if语句中使用字符串，没有任何反应。

Answer 1

好的，这就是我要做的。首先定义一个这样的枚举：

typedef NS_ENUM(NSInteger, SearchType) {
    SearchTypeWine,
    SearchTypeWinery,
    SearchTypeGrapes,
    SearchTypeReviews
};

为控制器提供如下属性：

@property (nonatomic) SearchType searchType;

然后你制作4个UIButton。您可以将它们全部挂钩到相同的IBAction以减少LoC。

- (IBAction)buttonPresssed:(id)sender
{
    UIButton *button = (UIButton *)sender;
    switch (button.tag) {
        case 100:
            self.searchType = SearchTypeWine;
            break;
        case 101:
            self.searchType = SearchTypeWinery;
            break;
        case 102:
            self.searchType = SearchTypeReviews;
            break;
        case 103:
            self.searchType = SearchTypeGrapes;
            break;
        default:
            break;
    }
}

然后执行搜索的方法：

- (IBAction)performSearch:(id)sender
{
    switch (self.searchType) {
        case SearchTypeWine:
            //handle appropriately
            break;
        case SearchTypeWinery:
            //handle appropriately
            break;
        case SearchTypeReviews:
            //handle appropriately
            break;
        case SearchTypeGrapes:
            //handle appropriately
            break;
        default:
            break;
    }
}

使用IBAction来改变不同IBAction的动作

1 个答案: