Question

是否有方便的方法制作带徽章的按钮？不在图标上...我想在应用程序中执行此操作。带有程序选择徽章的按钮或图像。或者我是否需要构建一个photoshop图像库？

Answer 1

如果没有photoshop图片库，您需要使用resizableImageWithCapInsets来实现此目的。有一些很好的主题（here和here）可以解释它的用法。

以下是我刚才提出的一个例子：

//Create a label (width/height not important at this stage)
UILabel *yourLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 1, 1)];
yourLabel.text = @"7+";
[yourLabel sizeToFit];

CGRect labelFrame = yourLabel.frame;

//Here we create a UIImage that is resizable, but will not resize the areas concerned with the cap insets you've defined
UIImage *badgeImage = [[UIImage imageNamed:@"badge.png"]resizableImageWithCapInsets:UIEdgeInsetsMake(5, 5, 5, 5)];
UIImageView *badgeImageView = [[UIImageView alloc]initWithImage:badgeImage];

badgeImageView.contentMode = UIViewContentModeScaleToFill;
badgeImageView.backgroundColor = [UIColor clearColor];

labelFrame.size.width += 5; //This is the 'padding' on the right and left (added together)
//If your badge edges are completely circular then you don't want to change the height, but if they're not then go ahead in the same way with the width. If your badge has a static height, you'll need to make sure the font size doesn't exceed this height; better start off with a small font-size

badgeImageView.frame = labelFrame; //The badge is now the right width with padding taken into account

//Center the label on the badge image view
yourLabel.center = CGPointMake(badgeImageView.frame.size.width/2, badgeImageView.frame.size.height/2);

//Finally we add the label to the badge image view
[badgeImageView addSubview:yourLabel];
//Add your badge to the main view
[self.view addSubview:badgeImageView];

[badgeImageView release];
[yourLabel release];

Answer 2

UILabel   *lbl_notification_count = [[UILabel alloc]initWithFrame:CGRectMake(5,0, 18, 18)];

        lbl_notification_count.textColor = [UIColor whiteColor];

        lbl_notification_count.textAlignment = NSTextAlignmentCenter;

        lbl_notification_count.text = [NSString stringWithFormat:@"%d",appDel.NotificationBadge];

        lbl_notification_count.adjustsFontSizeToFitWidth=YES;

        lbl_notification_count.layer.borderWidth = 1;

        lbl_notification_count.layer.cornerRadius = lbl_notification_count.layer.frame.size.height/2;

        lbl_notification_count.layer.masksToBounds = YES;

        lbl_notification_count.layer.borderColor =[[UIColor colorWithRed:241.0/255.0 green:84.0/255.0 blue:67.0/255.0 alpha:1.0] CGColor];

        lbl_notification_count.backgroundColor = [UIColor colorWithRed:241.0/255.0 green:84.0/255.0 blue:67.0/255.0 alpha:1.0];

        lbl_notification_count.font = CustomFontMediumWithSize(12);

        if (appDel.NotificationBadge >= 1) {

            [btnNotification addSubview:lbl_notification_count];

             [lbl_notification_count setHidden:NO];

        }else{

             [lbl_notification_count setHidden:YES];

        }

将圆形图标添加到圆形矩形按钮？

2 个答案: