ios - 如何重新加载 UIAlertView 消息

Question

我从 github 获取了这个项目.

这是自定义的AlertView。我明白它是如何运作的。为我的项目修改了它，就像这样

Course1 - 某些产品的名称，“1” - 是其数量。当我输入正/负金额增加/减少时。但它只适用于我的变量(当我显示它时，我将其加载到这个 AlertView 上，并且它是 1)。如何通过更改 var(金额)重新加载此警报 View 的消息。我不明白。这是我的代码。

在我的类(class)中，我通过此代码调用警报 View

BlockAlertView *alert = [BlockAlertView alertWithTitle: title message:ac.acCount];

[alert setCancelButtonWithTitle:@"-" block:nil];
[alert setDestructiveButtonWithTitle:@"+" block:^{
            int u = [ac.acCount intValue];
            u++;
            ac.acCount = [NSString stringWithFormat:@"%d", u];
            NSLog(@"%d", u);
        }];
        [alert addButtonWithTitle:@"Ok" block:^{
            NSMutableArray *container = [[NSMutableArray alloc] init];
            [container addObject:title];
            [container addObject:price];
            [container addObject:bId];
            [container addObject:ac.acCount];
            [container addObject:depid];
            [[NSNotificationCenter defaultCenter] postNotificationName:@"MyNotification" object:container];
        }];
        [alert show];

Show 方法只是使用来自alertWithTitle: title message:ac.acCount 的参数绘制警报 View 。这是代码

+ (BlockAlertView *)alertWithTitle:(NSString *)title message:(NSString *)message
 {
    return [[[BlockAlertView alloc] initWithTitle:title message:message] autorelease];
 }

这里是

- (id)initWithTitle:(NSString *)title message:(NSString *)message 
{
NSLog(@"title - %@ message - %@", title, message);

if ((self = [super init]))
{
    UIWindow *parentView = [BlockBackground sharedInstance];
    CGRect frame = parentView.bounds;
    frame.origin.x = floorf((frame.size.width - background.size.width) * 0.5);
    frame.size.width = background.size.width;

    _view = [[UIView alloc] initWithFrame:frame];
    _blocks = [[NSMutableArray alloc] init];
    _height = kAlertViewBorder + 6;

    if (title)
    {
        CGSize size = [title sizeWithFont:titleFont
                        constrainedToSize:CGSizeMake(frame.size.width-kAlertViewBorder*2, 1000)
                            lineBreakMode:UILineBreakModeWordWrap];

        UILabel *labelView = [[UILabel alloc] initWithFrame:CGRectMake(kAlertViewBorder, _height, frame.size.width-kAlertViewBorder*2, size.height)];
        labelView.font = titleFont;
        labelView.numberOfLines = 0;
        labelView.lineBreakMode = UILineBreakModeWordWrap;
        labelView.textColor = kAlertViewTitleTextColor;
        labelView.backgroundColor = [UIColor clearColor];
        labelView.textAlignment = UITextAlignmentCenter;
        labelView.shadowColor = kAlertViewTitleShadowColor;
        labelView.shadowOffset = kAlertViewTitleShadowOffset;
        labelView.text = title;
        [_view addSubview:labelView];
        [labelView release];

        _height += size.height + kAlertViewBorder;
    }

    if (message)
    {
        CGSize size = [message sizeWithFont:messageFont
                          constrainedToSize:CGSizeMake(frame.size.width-kAlertViewBorder*2, 1000)
                              lineBreakMode:UILineBreakModeWordWrap];

        UILabel *labelView = [[UILabel alloc] initWithFrame:CGRectMake(kAlertViewBorder, _height, frame.size.width-kAlertViewBorder*2, size.height)];
        labelView.font = messageFont;
        labelView.numberOfLines = 0;
        labelView.lineBreakMode = UILineBreakModeWordWrap;
        labelView.textColor = kAlertViewMessageTextColor;
        labelView.backgroundColor = [UIColor clearColor];
        labelView.textAlignment = UITextAlignmentCenter;
        labelView.shadowColor = kAlertViewMessageShadowColor;
        labelView.shadowOffset = kAlertViewMessageShadowOffset;
        labelView.text = message;
        [_view addSubview:labelView];
        [labelView release];

        _height += size.height + kAlertViewBorder;
    }

    _vignetteBackground = NO;
}

return self;

我尝试使用这样的东西

-(void)reloadAlertView: (NSString *) title: (NSString *) message{
[self initWithTitle:title message:message];
}

并从我的类(class)中调用它，我在类(class)中显示警报 View 。

[alert reloadAlertView: title: newMessage];

Answer 1

您需要在 CustomAlertView.h 中引用新标签

@property (nonatomic, strong) IBOutlet UILabel *mylab;

然后就可以通过CustomAlertView.h类的对象来获取这个标签的属性

BlockAlertView *alert ...;
alert.mylab.text = @"hello";