Question

问题是当点击按钮时，它没有更新！它不会隐藏或显示代码中写入的对象。我错过了什么？

viewcontroller.h

@interface ViewController : UIViewController {
    BOOL clicked1;
    BOOL clicked2;
}

@property (strong, nonatomic) IBOutlet UIImageView *buttonbg1;
@property (strong, nonatomic) IBOutlet UIImageView *buttonbg11;
@property (strong, nonatomic) IBOutlet UIImageView *buttonbg111;
@property (strong, nonatomic) IBOutlet UIButton *exaa1;
@property (strong, nonatomic) IBOutlet UIButton *exab2;

- (IBAction)exaa1:(id)sender;
- (IBAction)exab2:(id)sender;

@end

viewcontroller.m

- (IBAction)exaa1:(id)sender {
    clicked1 = YES;
}

- (IBAction)exab2:(id)sender {
    clicked2 = YES;
}

- (void)example1 {
    [_exaa1 setTitle:@"1111" forState:UIControlStateNormal];
    [_exab2 setTitle:@"2222" forState:UIControlStateNormal];

    if (clicked1) {
        _buttonbg111.hidden = NO;
        _buttonbg11.hidden = YES;
        _buttonbg1.hidden = YES;
        NSLog(@"1");

    } else if(clicked2) {
        _buttonbg11.hidden = NO;
        _buttonbg1.hidden = YES;
        _buttonbg111.hidden = YES;
        NSLog(@"2");
    }
}

Answer 1

*- (IBAction)exaa1:(id)sender {
    clicked1 = YES;
    [self example1];
}
- (IBAction)exab2:(id)sender {
    clicked2 = YES;
    [self example1];
}
- (void)example1 {
    [_exaa1 setTitle:@"1111" forState:UIControlStateNormal];
    [_exab2 setTitle:@"2222" forState:UIControlStateNormal];
    if (clicked1) {
        _buttonbg111.hidden = NO;
        _buttonbg11.hidden = YES;
        _buttonbg1.hidden = YES;
        NSLog(@"1");
    } else if(clicked2) {
        _buttonbg11.hidden = NO;
        _buttonbg1.hidden = YES;
        _buttonbg111.hidden = YES;
        NSLog(@"2");
    }
}*

Answer 2

您只是忘记在两个IBActions方法中调用您的方法example1。你只需将[self example1]写入两个IBActions方法。你会得到你的确切输出。

Answer 3

您忘记在两个按钮IBAction方法中调用example1方法

Answer 4

Please refer the following corrected code   
 - (IBAction)exaa1:(id)sender {
        clicked1 = YES;
        clicked2 = NO;
        [self example1];
    }

    - (IBAction)exab2:(id)sender {
        clicked2 = YES;
        clicked1 = NO;
        [self example1];
    }

    - (void)example1 {
        [_exaa1 setTitle:@"1111" forState:UIControlStateNormal];
        [_exab2 setTitle:@"2222" forState:UIControlStateNormal];

        if (clicked1) {
            _buttonbg111.hidden = NO;
            _buttonbg11.hidden = YES;
            _buttonbg1.hidden = YES;
            NSLog(@"1");

        } else if(clicked2) {
            _buttonbg11.hidden = NO;
            _buttonbg1.hidden = YES;
            _buttonbg111.hidden = YES;
            NSLog(@"2");
        }
    }

单击按钮时视图不会更新

4 个答案: