IOS - 点击按钮时打开另一个控制器

Question

我从今天开始自己在 IOS 上工作，并开始在现有项目上进行一些小改动。通过界面生成器，我能够添加一个按钮。现在，当点击该按钮时，我想从不同的故事板打开另一个控制器。

这是我的homecell.m

#import "HomeTableViewCell.h"
#import "HostListingsViewController.h"

@implementation HomeTableViewCell

- (void)awakeFromNib {
    // Initialization code
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

- (IBAction)sharetapped:(id)sender {
// here i want to be redirected to another controller
}
@end

这是我的 homecell.h

#import <UIKit/UIKit.h>

@interface HomeTableViewCell : UITableViewCell
@property (weak, nonatomic) IBOutlet UIImageView *imageViewHome;
@property (weak, nonatomic) IBOutlet UILabel *labelHeading;
@property (weak, nonatomic) IBOutlet UILabel *labelSubHeading;

- (IBAction)sharetapped:(id)sender;
@end

我在谷歌搜索并无法理解。所以我在这里寻求你的帮助。我正在使用 xcode8。

Answer 1

实际上，您在项目中使用的是 tableview。所以您必须像这样设置按钮点击操作：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    [cell.buttonname addTarget:self
                         action:@selector(navigate:) forControlEvents:UIControlEventTouchDown];
}

-void(navigate)
{

       UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainFlow" bundle: nil];
       yourViewController *abcd = [storyboard instantiateViewControllerWithIdentifier:@"yourstoryboard id"];

       [self.navigationController pushViewController:outCome animated:YES];

}

此代码将在其他屏幕上导航。

Answer 2

如果您需要检查按钮按下的单元格并将一些数据发送到另一个控制器

homecell.h

#import <UIKit/UIKit.h>

@protocol HomeCellDelegate

- (void)showDataFromCell:(HomeTableViewCell *)cell;

@end

@interface HomeTableViewCell : UITableViewCell

@property (weak, nonatomic) id < HomeCellDelegate > delegate;

@property (weak, nonatomic) IBOutlet UIImageView *imageViewHome;
@property (weak, nonatomic) IBOutlet UILabel *labelHeading;
@property (weak, nonatomic) IBOutlet UILabel *labelSubHeading;

- (IBAction)sharetapped:(id)sender;

@end

homecell.m

#import "HomeTableViewCell.h"
#import "HostListingsViewController.h"

@implementation HomeTableViewCell

- (void)awakeFromNib {
    // Initialization code
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

- (IBAction)sharetapped:(id)sender {
    [self.delegate showDataFromCell:self];
}

@end

带有 TableView 的控制器

@interface YourViewController () <HomeCellDelegate>

...

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
...    
HomeTableViewCell *homeCell = [tableView dequeueReusableCellWithIdentifier:@"homeCell" forIndexPath:indexPath];

homeCell.delegate = self;
...

- (void)showDataFromCell:(HomeTableViewCell *)cell {
NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];
...
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"yourAnotherStoryboard" bundle: nil];        
yourViewController *presentController = [storyboard instantiateViewControllerWithIdentifier:@"yourViewController"];
presentController.someDataFromCell = someDataArray[indexPath.row];
            [self presentViewController:presentController
                               animated:NO
                             completion:nil];
}