Shulou(Shulou.com)06/03 Report--

小编给大家分享一下iOS代码片段的示例分析，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧!

【1】键盘遮挡的一种解决方法：

主要实现逻辑: 将需要显示的控件放置在一个单独的UIView中，然后整个view上移处理

代码实现：

+(void)animationView:(UIScrollView *)anmaView activeRect:(CGRect)filedRect

{

// CGRect filedRect=filed.frame;

CGPoint point=anmaView.contentOffset;

// 计算出距离屏幕上方的相对坐标高度

float realDis=filedRect.origin.y-point.y;

// 计算到目标点的距离的绝对值

int distance1=0;

if (iPhone5) {

distance1=120;

}else{

distance1=90;

}

float distance=fabsf(realDis-distance1);

if (realDis>distance1) {

point.y+=distance;

}else{

point.y-=distance;

}

[UIView beginAnimations:nil context:nil];

[UIView setAnimationDuration:0.5];

anmaView.contentOffset=point;

[UIView commitAnimations];

}

【2】移动号码验证（网络转载，已验证）

- (BOOL)isMobileNumber:(NSString*)mobileNum

{

/**

* 手机号码

* 移动：134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188

* 联通：130,131,132,152,155,156,185,186

* 电信：133,1349,153,180,189

*/

NSString* MOBILE= @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$";

/**

* 中国移动：China Mobile

* 134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188

*/

NSString* CM= @"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\d)\\d{7}$";

/**

* 中国联通：China Unicom

* 130,131,132,152,155,156,185,186

*/

NSString* CU= @"^1(3[0-2]|5[256]|8[56])\\d{8}$";

/**

* 中国电信：China Telecom

* 133,1349,153,180,189

*/

NSString* CT= @"^1((33|53|8[09])[0-9]|349)\\d{7}$";

/**

* 大陆地区固话及小灵通

* 区号：010,020,021,022,023,024,025,027,028,029

* 号码：七位或八位

*/

// NSString * PHS = @"^0(10|2[0-5789]|\\d{3})\\d{7,8}$";

NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",MOBILE];

NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",CM];

NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",CU];

NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",CT];

if(([regextestmobile evaluateWithObject:mobileNum] == YES)

|| ([regextestcm evaluateWithObject:mobileNum] == YES)

|| ([regextestct evaluateWithObject:mobileNum] == YES)

|| ([regextestcu evaluateWithObject:mobileNum] == YES))

{

return YES;

}

else

{

return NO;

}

}

【3】邮箱验证（网络转载，未验证）

-(BOOL)validateEmail:(NSString*)email

{

if((0 != [email rangeOfString:@"@"].length) &&

(0 != [email rangeOfString:@"."].length))

{

NSCharacterSet* tmpInvalidCharSet = [[NSCharacterSet alphanumericCharacterSet] invertedSet];

NSMutableCharacterSet* tmpInvalidMutableCharSet = [[tmpInvalidCharSet mutableCopy] autorelease];

[tmpInvalidMutableCharSet removeCharactersInString:@"_-"];

//使用compare option 来设定比较规则，如

//NSCaseInsensitiveSearch是不区分大小写

//NSLiteralSearch 进行完全比较,区分大小写

//NSNumericSearch 只比较定符串的个数，而不比较字符串的字面值

NSRange range1 = [email rangeOfString:@"@"

options:NSCaseInsensitiveSearch];

//取得用户名部分

NSString* userNameString = [email substringToIndex:range1.location];

NSArray* userNameArray = [userNameString componentsSeparatedByString:@"."];

for(NSString* string in userNameArray)

{

NSRange rangeOfInavlidChars = [string rangeOfCharacterFromSet: tmpInvalidMutableCharSet];

if(rangeOfInavlidChars.length != 0 || [string isEqualToString:@""])

return NO;

}

NSString *domainString = [email substringFromIndex:range1.location+1];

NSArray *domainArray = [domainString componentsSeparatedByString:@"."];

for(NSString *string in domainArray)

{

NSRange rangeOfInavlidChars=[string rangeOfCharacterFromSet:tmpInvalidMutableCharSet];

if(rangeOfInavlidChars.length !=0 || [string isEqualToString:@""])

return NO;

}

return YES;

}

else // no ''@'' or ''.'' present

return NO;

}

BOOL NSStringIsValidEmail(NSString *checkString)

{

NString *stricterFilterString = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";

NSString *laxString = @".+@.+\.[A-Za-z]{2}[A-Za-z]*";

NSString *emailRegex = stricterFilter ? stricterFilterString : laxString;

NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];

return [emailTest evaluateWithObject:checkString];

}

以上是"iOS代码片段的示例分析"这篇文章的所有内容，感谢各位的阅读!相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注行业资讯频道!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.