IOS系列——小功能代码整理

最新推荐文章于 2024-09-12 07:40:14 发布

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本文介绍iOS开发中常用的正则表达式，包括电子邮件和电话号码验证，并提供拨打电话的方法及界面定制技巧，如修改AlertView背景和设置透明键盘。

1.正则表达式：邮箱验证

-(BOOL)isValidateEmail:(NSString *)email
{
NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",emailRegex];
return [emailTest evaluateWithObject:email];
}

2.正则表达式：电话号码验证

+ (BOOL)checkTel:(NSString *)str
{
    //1[0-9]{10}
    //^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$
    //    NSString *regex = @"[0-9]{11}";
    NSString *regex = @"^((13[0-9])|(147)|(15[0-3,5-9])|(17[0,6-8])|(18[0-9]))\\d{8}$";
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
    return [pred evaluateWithObject:str];
}

3.拨打电话

//拨打电话
#define canTel                 ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"tel:"]])
#define tel(phoneNumber)       ([[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"tel:%@",phoneNumber]]])
#define telprompt(phoneNumber) ([[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"telprompt:%@",phoneNumber]]])

4.影藏statusBar

[[UIApplication sharedApplication]setStatusBarHidden:YES animated:NO];

5.更改AlertView的背景

UIAlertView *theAlert = [[[UIAlertViewalloc] initWithTitle:@"Atention"
message: @"I'm a Chinese!"
delegate:nil
cancelButtonTitle:@"Cancel"
otherButtonTitles:@"Okay",nil] autorelease];
[theAlert show];
UIImage *theImage = [UIImageimageNamed:@"loveChina.png"];
theImage = [theImage stretchableImageWithLeftCapWidth:0topCapHeight:0];
CGSize theSize = [theAlert frame].size;
UIGraphicsBeginImageContext(theSize);
[theImage drawInRect:CGRectMake(5, 5, theSize.width-10, theSize.height-20)];//这个地方的大小要自己调整，以适应alertview的背景颜色的大小。
theImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
theAlert.layer.contents = (id)[theImage CGImage];

6.设置键盘透明

textField.keyboardAppearance = UIKeyboardAppearanceAlert;

7.状态栏的网络活动指示是否显示

[UIApplication sharedApplication].networkActivityIndicatorVisible，默认值是NO。