Question

我需要一个项目，我正在使用一个类似于Mail应用程序用来显示联系人的按钮。

如果您没有看到我在说什么，请看这张图片：http://www.aboutptc.net/theButtonIneed.png

提前致谢。

Answer 1

Mail App的按钮是一个未记录的类。

尽管如此，您可以使用自定义可伸缩背景图像和UIButton轻松模拟这一点。

Answer 2

以下是代码...您需要从MessageUI.framework：

中获取图片

-(UIButton *) buttonForComposeName:(NSString *) name{
    UIButton *button;
    button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    CGSize stringSize=[name sizeWithFont:[UIFont fontWithName:@"Helvetica" size:20]];

    [button setFrame:CGRectMake(0,0, stringSize.width+10, 20)];
    [button setTitle:name forState:UIControlStateNormal];
    [button addTarget:self action:@selector(composeNameButtonTapped:) forControlEvents:UIControlEventAllEvents];

    UIImage *image = [[UIImage imageNamed: @"Compose_atom@2x.png"] stretchableImageWithLeftCapWidth:25 topCapHeight:0];
    image=[MailRect imageWithImage:image scaledToSize:CGSizeMake(button.frame.size.width*2, 40)];

    [button setBackgroundImage:image forState:UIControlStateNormal];
}

-(void) composeNameButtonTapped:(id)sender{
    ((UIButton *)sender).selected=YES;

    UIImage *imageSelected = [[UIImage imageNamed: @"compose_atom_selected@2x.png"] stretchableImageWithLeftCapWidth:25 topCapHeight:0];
    imageSelected=[MailRect imageWithImage:imageSelected scaledToSize:CGSizeMake(((UIButton *)sender).frame.size.width*2, 40)];

    [((UIButton *)sender) setBackgroundImage:imageSelected forState:(UIControlStateSelected)];
}

+ (UIImage*)imageWithImage:(UIImage*)image scaledToSize:(CGSize)newSize{
    UIGraphicsBeginImageContext( newSize );
    [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
    UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return newImage;
}

邮件应用程序的电子邮件按钮iPhone

2 个答案: