IOS系列——小功能代码整理

来源：互联网发布：炉石传说德鲁伊知乎编辑：程序博客网时间：2024/05/01 17:30

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:nilcancelButtonTitle:@"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。

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