IB Action无法捕捉我的按钮点击事件

Question

IB动作无法在点击后捕捉到我的事件，将按钮标识设置为buttonEn，将en设置为touchUPInside事件方法......但仍然没有响应被触发。

以下是我的代码：

- (IBAction)en:(id)sender {

    NSLog(@"enter");
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"test_en.xls" ofType:@"xls"];
    NSURL *url = [NSURL URLWithString:filePath];
    QZWorkbook *excelReader = [[QZWorkbook alloc] initWithContentsOfXLS:url];
    NSArray *sheets =excelReader.workSheets;
    NSMutableArray *words = [[NSMutableArray alloc] init];

    for(int i = 0 ; i < [sheets count] ; i ++){
    QZWorkSheet *sheet = [sheets objectAtIndex:i];
        NSArray *columns = [ sheet columns];
        NSArray *rows =  columns.firstObject;
        for(int  j = 0  ; j < [rows count] ; j ++){
           QZCell *nextObject =  [ rows objectAtIndex:j ] ;
            [words addObject:            nextObject.content ];
        }
    }
 //   buttonDe.se

    [buttonEn setTitle: [words objectAtIndex:0] forState: UIControlStateNormal];
    [buttonDe setTitle: [words objectAtIndex:1] forState: UIControlStateNormal];
    [buttonFr setTitle: [words objectAtIndex:2] forState: UIControlStateNormal];
    [buttonEp setTitle: [words objectAtIndex:3] forState: UIControlStateNormal];
    [buttonNd setTitle: [words objectAtIndex:4] forState: UIControlStateNormal];
    [buttonJp setTitle: [words objectAtIndex:5] forState: UIControlStateNormal];

    [label1 setText:[words objectAtIndex:6] ];
    [label2 setText:[words objectAtIndex:7] ];

    QZWorkSheet *firstWorkSheet = excelReader.workSheets.firstObject;
    [firstWorkSheet open];
    NSLog(@"%@", firstWorkSheet.rows.firstObject);
}

Answer 1

您应该检查IBOutlet是否与按钮和方法正确连接。 在方法上应用断点并检查指针是否转到方法。

<强> ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    IBOutlet UIButton *test;
}
-(IBAction)en:(id)sender;

@end

<强> ViewController.m

#import“ViewController.h”

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    \[super viewDidLoad\];
    // Do any additional setup after loading the view, typically from a nib.

}

- (void)didReceiveMemoryWarning
{
    \[super didReceiveMemoryWarning\];
    // Dispose of any resources that can be recreated.
}

- (IBAction)en:(id)sender {

//    NSLog(@"enter");
//    NSString *filePath = \[\[NSBundle mainBundle\] pathForResource:@"test_en.xls" ofType:@"xls"\];
//    NSURL *url = \[NSURL URLWithString:filePath\];
//    QZWorkbook *excelReader = \[\[QZWorkbook alloc\] initWithContentsOfXLS:url\];
//    NSArray *sheets =excelReader.workSheets;
//    NSMutableArray *words = \[\[NSMutableArray alloc\] init\];
//    
//    for(int i = 0 ; i < \[sheets count\] ; i ++){
//        QZWorkSheet *sheet = \[sheets objectAtIndex:i\];
//        NSArray *columns = \[ sheet columns\];
//        NSArray *rows =  columns.firstObject;
//        for(int  j = 0  ; j < \[rows count\] ; j ++){
//            QZCell *nextObject =  \[ rows objectAtIndex:j \] ;
//            \[words addObject:            nextObject.content \];
//        }
//    }
//    //   buttonDe.se
//    
//    \[buttonEn setTitle: \[words objectAtIndex:0\] forState: UIControlStateNormal\];
//    \[buttonDe setTitle: \[words objectAtIndex:1\] forState: UIControlStateNormal\];
//    \[buttonFr setTitle: \[words objectAtIndex:2\] forState: UIControlStateNormal\];
//    \[buttonEp setTitle: \[words objectAtIndex:3\] forState: UIControlStateNormal\];
//    \[buttonNd setTitle: \[words objectAtIndex:4\] forState: UIControlStateNormal\];
//    \[buttonJp setTitle: \[words objectAtIndex:5\] forState: UIControlStateNormal\];
//    
//    \[label1 setText:\[words objectAtIndex:6\] \];
//    \[label2 setText:\[words objectAtIndex:7\] \];
//    
//    QZWorkSheet *firstWorkSheet = excelReader.workSheets.firstObject;
//    \[firstWorkSheet open\];
//    NSLog(@"%@", firstWorkSheet.rows.firstObject);
}
@end

只需创建一个测试项目并使用名称和方法复制粘贴此IBOutlet上的代码和链接按钮。如果此工作正常，那么您的实现就会出现问题。

Answer 2

首先将UIButton从对象库拖到storyboard或xib中。

然后单击辅助编辑器。右上角的中间标签。

然后将按钮连接拖到文件的.h类，您必须执行按钮操作。然后将连接类型插座更改为操作，设置按钮操作方法名称，然后更改事件然后连接按钮。

按钮操作方法将出现在.m文件中

用于交叉检查方法操作中的打印问候按钮

- (IBAction)buttonAction:(id)sender
{
   NSLog(@"hello button");
}

从.m文件中删除不必要的按钮相关代码

希望它会对你有所帮助。