版本記錄
| 版本號 | 時間 |
|---|---|
| V1.0 | 2017.12.15 |
前言
NSString是我們經(jīng)常使用的一個類瓤漏，但是蘋果的API很多用起來不是那么方便，需要根據(jù)我們特殊需求進行個性化的改變和定制颊埃，接下來蔬充，我就寫一個NSString分類工具，以后在使用的時候直接調(diào)用這個分類中的方法竟秫，可以實現(xiàn)很多小的功能，用起來也很方便跷乐。相關(guān)代碼已經(jīng)上傳至GitHub - 刀客傳奇肥败。
計算字符串的占的寬度
很多時候，我們需要計算UILabel或者UIButton的寬度愕提，因為里面的文字可能是從服務(wù)器返回的馒稍，所以要求這個控件的寬度也是自適應(yīng)的，這就需要我們實時的計算返回的字符串占的寬度浅侨。
先看下面的代碼纽谒。
//根據(jù)字符串長度獲取字符串尺寸
- (CGSize)jj_textSizeWithFont:(UIFont *)font
constrainedToSize:(CGSize)size;
//根據(jù)字符串長度獲取字符串尺寸
- (CGSize)jj_textSizeWithFont:(UIFont *)font
constrainedToSize:(CGSize)size
{
CGSize textSize;
if (CGSizeEqualToSize(size, CGSizeZero)) {
NSDictionary *attributes = [NSDictionary dictionaryWithObject:font forKey:NSFontAttributeName];
textSize = [self sizeWithAttributes:attributes];
textSize = CGSizeMake(floor(size.width), floor(size.height));
}
else {
NSStringDrawingOptions option = NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading;
//NSStringDrawingTruncatesLastVisibleLine如果文本內(nèi)容超出指定的矩形限制，文本將被截去并在最后一個字符后加上省略號如输。 如果指定了NSStringDrawingUsesLineFragmentOrigin選項鼓黔，則該選項被忽略 NSStringDrawingUsesFontLeading計算行高時使用行間距。（譯者注：字體大小+行間距=行高）
NSDictionary *attributes = [NSDictionary dictionaryWithObject:font forKey:NSFontAttributeName];
CGRect rect = [self boundingRectWithSize:size options:option attributes:attributes context:nil];
textSize = rect.size;
//注意：當(dāng)字符串同時存在@和&字符時不见，使用NSStringDrawingUsesLineFragmentOrigin時rect會變?yōu)榱? if (CGSizeEqualToSize(textSize, CGSizeZero)) {
option = NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesFontLeading;
rect = [self boundingRectWithSize:size options:option attributes:attributes context:nil];
textSize = rect.size;
}
}
return textSize;
}
下面我們就調(diào)用一下澳化。
#import "ViewController.h"
#import "NSString+JJNSStringExt.h"
@interface ViewController ()
@end
@implementation ViewController
#pragma mark - Override Base Function
- (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor lightGrayColor];
NSString *str = @"我們是一家人";
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[self.view addSubview:button];
[button setTitle:str forState:UIControlStateNormal];
button.titleLabel.font = [UIFont systemFontOfSize:17.0];
button.backgroundColor = [UIColor blueColor];
CGSize size = [str jj_textSizeWithFont:button.titleLabel.font constrainedToSize:CGSizeMake(MAXFLOAT, 22.0)];
button.frame = CGRectMake(100.0, 150.0, size.width + 20.0, 30.0);
NSLog(@"button = %@", button);
}
@end
下面看一下輸出結(jié)果
2017-12-15 23:46:56.149169+0800 JJNSStringTool[1259:19762] button = <UIButton: 0x7ffa9fc07ee0; frame = (100 150; 123.938 30); opaque = NO; layer = <CALayer: 0x604000222340>>
下面看一下效果圖
判斷是否是手機號
先看分類方法
//是否是手機號的判定
- (BOOL)jj_isPhoneNumberWithStr:(NSString *)str;
/*
是否是手機號的判定
移動：139 138 137 136 135 134 147 188 187 184 183 182 178 159 158 157 152 151 150 1703 1705 1706 198
聯(lián)通：186 185 176 145 156 155 132 131 130 175 176 1704 1707 1708 1709 171 166
電信：189 181 180 177 153 133 173 1700 1701 1702 199
*/
- (BOOL)jj_isPhoneNumberWithStr:(NSString *)str
{
str = [str stringByReplacingOccurrencesOfString:@" " withString:@""];
if (str.length != 11) {
return NO;
}
else {
//移動
NSString *CM_NUM = @"^((13[4-9])|(147)|(15[0-2,7-9])|(178)|(18[2-4,7-8])|(198))\\d{8}|(170[3,5,6])\\d{7}$";
//聯(lián)通
NSString *CU_NUM = @"^((13[0-2])|(145)|(15[5-6])|(17[5,6])|(18[5,6])|(166))\\d{8}|(170[4,7-9])\\d{7}|171[0-9]\\d{7}$";
//電信
NSString *CT_NUM = @"^((133)|(153)|(17[3,7])|(18[0,1,9])|(199))\\d{8}|(170[0-2])\\d{7}$";
NSPredicate *pred1 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM_NUM];
BOOL isMatch1 = [pred1 evaluateWithObject:str];
NSPredicate *pred2 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU_NUM];
BOOL isMatch2 = [pred2 evaluateWithObject:str];
NSPredicate *pred3 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT_NUM];
BOOL isMatch3 = [pred3 evaluateWithObject:str];
if (isMatch1 || isMatch2 || isMatch3) {
return YES;
}
else {
return NO;
}
}
}
下面看調(diào)用過程
NSString *str = @"18613546782";
BOOL result = [str jj_isPhoneNumberWithStr:str];
NSLog(@"result = %d", result);
NSString *str1 = @"11111111111";
BOOL result1 = [str1 jj_isPhoneNumberWithStr:str1];
NSLog(@"result1 = %d", result1);
下面看輸出結(jié)果
2017-12-16 00:21:15.543055+0800 JJNSStringTool[1675:35852] result = 1
2017-12-16 00:21:15.543518+0800 JJNSStringTool[1675:35852] result1 = 0
可見，可以實現(xiàn)對手機號碼的判定稳吮。
身份證號碼的驗證
還是直接看代碼
//身份證號碼驗證
- (BOOL)jj_isCardIdValid;
//身份證號碼驗證
- (BOOL)jj_isCardIdValid
{
NSString * cardId = self;
cardId = [cardId stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSUInteger length =0;
if (!cardId) {
return NO;
}
else {
length = cardId.length;
if (length !=15 && length !=18) {
return NO;
}
}
// 省份代碼
NSArray *areasArray =@[@"11",@"12", @"13",@"14", @"15",@"21", @"22",@"23", @"31",@"32", @"33",@"34", @"35",@"36", @"37",@"41", @"42",@"43", @"44",@"45", @"46",@"50", @"51",@"52", @"53",@"54", @"61",@"62", @"63",@"64", @"65",@"71", @"81",@"82", @"91"];
NSString *valueStart2 = [cardId substringToIndex:2];
BOOL areaFlag =NO;
for (NSString *areaCode in areasArray) {
if ([areaCode isEqualToString:valueStart2]) {
areaFlag =YES;
break;
}
}
if (!areaFlag) {
return false;
}
NSRegularExpression *regularExpression;
NSUInteger numberofMatch;
int year =0;
switch (length) {
case 15:
year = [cardId substringWithRange:NSMakeRange(6,2)].intValue +1900;
if (year %4 ==0 || (year %100 ==0 && year %4 ==0)) {
regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$"
options:NSRegularExpressionCaseInsensitive
error:nil];//測試出生日期的合法性
}
else {
regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$"
options:NSRegularExpressionCaseInsensitive
error:nil];//測試出生日期的合法性
}
numberofMatch = [regularExpression numberOfMatchesInString:cardId
options:NSMatchingReportProgress
range:NSMakeRange(0, cardId.length)];
if(numberofMatch >0) {
return YES;
}
else {
return NO;
}
case 18:
year = [cardId substringWithRange:NSMakeRange(6,4)].intValue;
if (year %4 ==0 || (year %100 ==0 && year %4 ==0)) {
regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$"
options:NSRegularExpressionCaseInsensitive
error:nil];//測試出生日期的合法性
}
else {
regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$"
options:NSRegularExpressionCaseInsensitive
error:nil];//測試出生日期的合法性
}
numberofMatch = [regularExpression numberOfMatchesInString:cardId
options:NSMatchingReportProgress
range:NSMakeRange(0, cardId.length)];
if(numberofMatch >0) {
int S = ([cardId substringWithRange:NSMakeRange(0,1)].intValue + [cardId substringWithRange:NSMakeRange(10,1)].intValue) *7 +
([cardId substringWithRange:NSMakeRange(1,1)].intValue + [cardId substringWithRange:NSMakeRange(11,1)].intValue) *9 +
([cardId substringWithRange:NSMakeRange(2,1)].intValue + [cardId substringWithRange:NSMakeRange(12,1)].intValue) *10 +
([cardId substringWithRange:NSMakeRange(3,1)].intValue + [cardId substringWithRange:NSMakeRange(13,1)].intValue) *5 +
([cardId substringWithRange:NSMakeRange(4,1)].intValue + [cardId substringWithRange:NSMakeRange(14,1)].intValue) *8 +
([cardId substringWithRange:NSMakeRange(5,1)].intValue + [cardId substringWithRange:NSMakeRange(15,1)].intValue) *4 +
([cardId substringWithRange:NSMakeRange(6,1)].intValue + [cardId substringWithRange:NSMakeRange(16,1)].intValue) *2 +
[cardId substringWithRange:NSMakeRange(7,1)].intValue *1 + [cardId substringWithRange:NSMakeRange(8,1)].intValue *6 +
[cardId substringWithRange:NSMakeRange(9,1)].intValue *3;
int Y = S %11;
NSString *M =@"F";
NSString *JYM =@"10X98765432";
M = [JYM substringWithRange:NSMakeRange(Y,1)];// 判斷校驗位
if ([M isEqualToString:[cardId substringWithRange:NSMakeRange(17,1)]]) {
return YES;// 檢測ID的校驗位
}
else {
return NO;
}
}
else {
return NO;
}
default:
return NO;
}
return NO;
}
下面我們就看一下調(diào)用過程
NSString *str1 = @"990606198808183611";
BOOL result1 = [str1 jj_isCardIdValid];
NSLog(@"result1 = %d", result1);
下面看輸出結(jié)果
2017-12-16 00:39:31.180822+0800 JJNSStringTool[2099:49567] result1 = 0
正確的身份證號碼我就不去驗證了缎谷，大家可以自行去驗證。
判斷是否是整數(shù)
還是直接看代碼
// 判斷是否是整數(shù)
- (BOOL)jj_isIntNumber;
// 判斷是否是整數(shù)
- (BOOL)jj_isIntNumber
{
NSString *regex = @"^-?[0-9]\\d*$";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
return [predicate evaluateWithObject:self];
}
這里就不給大家驗證了灶似，大家感興趣的可以自行驗證列林。
判斷是否是小數(shù)
還是直接看代碼
//判斷是否是小數(shù)
- (BOOL)jj_isFloatNumber;
//判斷是否是小數(shù)
- (BOOL)jj_isFloatNumber
{
NSString *regex = @"^-?([1-9]\\d*\\.\\d*|0\\.\\d*[1-9]\\d*|0?\\.0+|0)$";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
return [predicate evaluateWithObject:self];
}
這里就帶著大家一起驗證下。
//是否是小數(shù)
- (void)isFloatNumber
{
NSString *str = @"12.13";
BOOL result = [str jj_isFloatNumber];
NSLog(@"result = %d", result);
NSString *str1 = @"999";
BOOL result1 = [str1 jj_isFloatNumber];
NSLog(@"result1 = %d", result1);
}
看輸出結(jié)果
2017-12-16 00:51:41.022796+0800 JJNSStringTool[2221:55765] result = 1
2017-12-16 00:51:41.023191+0800 JJNSStringTool[2221:55765] result1 = 0
可以酪惭，看見可以很好的識別是否是小數(shù)希痴。
后記
未完，待續(xù)~~~
