iOS-常用小功能汇集
2017-04-21 本文已影响0人
李荣达
1、 url编码
+ (NSString *)urlEncodeString:(NSString *)urlString{
NSString *encodedString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
return encodedString;
}
2、 从故事板获取视图控制器
+ (id)ViewControllerFromStoryBoard:(NSString *)name WithIdentifier:(NSString *)identifier{
UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:name bundle:[NSBundle mainBundle]];
return [storyBoard instantiateViewControllerWithIdentifier:identifier];
}
3、 判断是否是空字符串
+ (BOOL)isEmptyString:(NSString *)string{
if (string == nil || string == NULL) {
return YES;
}
if ([string isKindOfClass:[NSNull class]]) {
return YES;
}
if ([string isKindOfClass:[NSString class]]){
if ([[string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] length] == 0){
return YES;
}
}
return NO;
}
4、 判断是否包含字符串（兼容iOS7）
+ (BOOL)sourceStr:(NSString *)source containsStr:(NSString *)contains{
BOOL isContained = NO;
if (([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0 && [[[UIDevice currentDevice] systemVersion] floatValue] < 8.0 ? YES : NO)) {
NSRange range = [source rangeOfString:contains];
if(range.length > 0){
isContained = YES;
}
}
else{
isContained = [source containsString:contains];
}
return isContained;
}
5、 对图片尺寸进行压缩
+ (UIImage*)imageWithImage:(UIImage*)image scaledToSize:(CGSize)newSize{
UIGraphicsBeginImageContext(newSize);
[image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}
6、 验证手机号
+ (BOOL)isMobile:(NSString *)mobileNum
{
if (mobileNum.length != 11)
{
return NO;
}
/**
* 手机号码:
* 13[0-9], 14[5,7], 15[0, 1, 2, 3, 5, 6, 7, 8, 9], 17[6, 7, 8], 18[0-9], 170[0-9]
* 移动号段: 134,135,136,137,138,139,150,151,152,157,158,159,182,183,184,187,188,147,178,1705
* 联通号段: 130,131,132,155,156,185,186,145,176,1709
* 电信号段: 133,153,180,181,189,177,1700
*/
NSString *MOBILE = @"^1(3[0-9]|4[57]|5[0-35-9]|8[0-9]|70)\\d{8}$";
/**
* 中国移动：China Mobile
* 134,135,136,137,138,139,150,151,152,157,158,159,182,183,184,187,188,147,178,1705
*/
NSString *CM = @"(^1(3[4-9]|4[7]|5[0-27-9]|7[8]|8[2-478])\\d{8}$)|(^1705\\d{7}$)";
/**
* 中国联通：China Unicom
* 130,131,132,155,156,185,186,145,176,1709
*/
NSString *CU = @"(^1(3[0-2]|4[5]|5[56]|7[6]|8[56])\\d{8}$)|(^1709\\d{7}$)";
/**
* 中国电信：China Telecom
* 133,153,180,181,189,177,1700
*/
NSString *CT = @"(^1(33|53|77|8[019])\\d{8}$)|(^1700\\d{7}$)";
NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];
NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM];
NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU];
NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT];
if (([regextestmobile evaluateWithObject:mobileNum] == YES)
|| ([regextestcm evaluateWithObject:mobileNum] == YES)
|| ([regextestct evaluateWithObject:mobileNum] == YES)
|| ([regextestcu evaluateWithObject:mobileNum] == YES))
{
return YES;
}
else
{
return NO;
}
}
7、 匹配用户密码6-16位数字和字母组合
+ (BOOL)checkPassword:(NSString *) password
{
NSString *pattern = @"^(?![0-9]+$)(?![a-zA-Z]+$)[0-9A-Za-z]{6,16}";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", pattern];
BOOL isMatch = [pred evaluateWithObject:password];
return isMatch;
}
8、 验证邮箱
+ (BOOL) validateEmail:(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];
}
9、 字典转字符串
+ (NSString*)dictionaryToJson:(NSDictionary *)dic
{
NSError *parseError = nil;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&parseError];
return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}
10、 数组转字符串
+ (NSString*)arrryToJson:(NSArray *)arr
{
NSError *parseError = nil;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:arr options:NSJSONWritingPrettyPrinted error:&parseError];
return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}
11、 判断字符串是否为纯数字
+(BOOL)isPureNumandCharacters:(NSString *)string
{
string = [string stringByTrimmingCharactersInSet:[NSCharacterSet decimalDigitCharacterSet]];
if(string.length > 0)
{
return NO;
}
return YES;
}
12、适配文字高度
①系统默认行间距
+ (CGFloat)stringHeight:(NSString *)str width:(CGFloat)width font:(int)font{
float height=[str boundingRectWithSize:CGSizeMake(width, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:font]} context:nil].size.height;
return height;
}
②自定义行间距
+ (CGFloat)stringHeight:(NSString *)str width:(CGFloat)width font:(int)font space:(float)space{
NSMutableParagraphStyle*paragraph =[[NSMutableParagraphStyle alloc]init];
paragraph.alignment=NSTextAlignmentJustified;
paragraph.firstLineHeadIndent=0;
paragraph.paragraphSpacingBefore=0;
paragraph.lineSpacing=space;
paragraph.hyphenationFactor=1.0;
float height=[str boundingRectWithSize:CGSizeMake(width, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:font],NSParagraphStyleAttributeName:paragraph} context:nil].size.height;
return height;
}
13、 适配文字宽度
+ (CGFloat)stringWidth:(NSString *)str higth:(CGFloat)higth font:(int)font{
float width=[str boundingRectWithSize:CGSizeMake(MAXFLOAT, higth) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:font]} context:nil].size.height;
return width;
}
14、 为控件上、下、左、右选择性画线
-(void)addLineToSomeThing:(id)anyThing isTop:(BOOL)isTop isBottom:(BOOL)isBottom isLeft:(BOOL)isLeft isRight:(BOOL)isRight{
if ([anyThing isKindOfClass:[UIView class]]){
UIView *anyView=(UIView *)anyThing;
float height=anyView.frame.size.height;
float width=anyView.frame.size.width;
if (isTop) {
CALayer *topBorder = [CALayer layer];
topBorder.frame = CGRectMake(0.0f, 0.0f, width, 1.0f);
topBorder.backgroundColor = [UIColor blackColor].CGColor;
[anyView.layer addSublayer:topBorder];
}
if (isBottom) {
CALayer *bottomBorder = [CALayer layer];
bottomBorder.frame = CGRectMake(0.0f, height-1.0, width, 1.0f);
bottomBorder.backgroundColor = [UIColor blackColor].CGColor;
[anyView.layer addSublayer:bottomBorder];
}
if (isLeft) {
CALayer *leftBorder = [CALayer layer];
leftBorder.frame = CGRectMake(0.0f, 0.0f, 1.0f, height);
leftBorder.backgroundColor = [UIColor blackColor].CGColor;
[anyView.layer addSublayer:leftBorder];
}
if (isRight) {
CALayer *rightBorder = [CALayer layer];
rightBorder.frame = CGRectMake(width-1, 0.0f, 1.0f, height);
rightBorder.backgroundColor = [UIColor blackColor].CGColor;
[anyView.layer addSublayer:rightBorder];
}
}
}
15、验证有1位小数的数字
+(BOOL)validateNumberHasPoint:(NSString *)textString{
NSString *regex = @"^[0-9]+(.[0-9]{1})?$";
NSPredicate *numberPre = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
return [numberPre evaluateWithObject:textString];
}
验证有2位小数的数字（同理可自行修改）
+(BOOL)validateNumberHasPoint:(NSString *)textString{
NSString *regex = @"^[0-9]+(.[0-9]{1,2})?$";
NSPredicate *numberPre = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
return [numberPre evaluateWithObject:textString];
}
16、改变文本行间距
+ (void)changeLineSpaceForLabel:(UILabel *)label WithSpace:(float)space {
NSString *labelText = label.text;
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText];
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle setLineSpacing:space];
[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];
label.attributedText = attributedString;
[label sizeToFit];
}
