#import <Foundation/Foundation.h>
@interface NSString (Extension)
- (CGFloat)heightWithLimitWidth:(CGFloat)width
fontSize:(CGFloat)fontSize
otherAttributes:(NSDictionary *)otherAttributes;
- (CGFloat)widthWithLimitHeight:(CGFloat)height
fontSize:(CGFloat)fontSize
otherAttributes:(NSDictionary *)otherAttributes;
- (CGSize)sizeWithLimitSize:(CGSize)size
fontSize:(CGFloat)fontSize
otherAttributes:(NSDictionary *)otherAttributes;
- (CGRect)rectWithSize:(CGSize)size
fontSize:(CGFloat)fontSize
otherAttributes:(NSDictionary *)otherAttributes;
//属性字符串 指定子串变色
- (NSMutableAttributedString *)attributedStringWithcolor:(UIColor *)color subString:(NSString *)subString;
// 属性字符串 指定子串变色 多处
- (NSMutableAttributedString *)attributedStringWithColorArray:(NSArray *)colorArray subStringArray:(NSArray *)subStringArray;
//属性字符串 指定子串改变显示效果
- (NSMutableAttributedString *)attributedStringWithAttributeds:(NSDictionary *)attributeds subString:(NSString *)subString;
/**
转变指定字符串
@param regArray 正则表达式数组
@param attributeds 指定属性
@return 返回的可变字符串
*/
- (NSMutableAttributedString *)changeStringWithReg:(NSArray *)regArray attributeds:(NSDictionary *)attributeds;
// 将url中的参数转为字典
- (NSMutableDictionary *)getURLParameters;
/**
插入图片
@param images 图片数组
@param font 字体
@param span 间距
@return 结果
*/
-(NSMutableAttributedString *)attributedStringWithImages:(NSArray<UIImage *> *)images font:(UIFont *)font imageSpan:(CGFloat)span;
@end
#import "NSString+Extension.h"
@implementation NSString (Extension)
- (CGFloat)heightWithLimitWidth:(CGFloat)width
fontSize:(CGFloat)fontSize
otherAttributes:(NSDictionary *)otherAttributes {
return [self rectWithSize:CGSizeMake(width, CGFLOAT_MAX)
fontSize:fontSize
otherAttributes:otherAttributes].size.height;
}
- (CGFloat)widthWithLimitHeight:(CGFloat)height
fontSize:(CGFloat)fontSize
otherAttributes:(NSDictionary *)otherAttributes {
return [self rectWithSize:CGSizeMake(CGFLOAT_MAX, height)
fontSize:fontSize
otherAttributes:otherAttributes].size.width;
}
- (CGSize)sizeWithLimitSize:(CGSize)size
fontSize:(CGFloat)fontSize
otherAttributes:(NSDictionary *)otherAttributes {
return [self rectWithSize:size
fontSize:fontSize
otherAttributes:otherAttributes].size;
}
- (CGRect)rectWithSize:(CGSize)size
fontSize:(CGFloat)fontSize
otherAttributes:(NSDictionary *)otherAttributes {
NSMutableDictionary *dictionary = [NSMutableDictionary dictionaryWithDictionary:@{NSFontAttributeName:[UIFont systemFontOfSize:fontSize]}];
if (otherAttributes) {
for (NSString *aKey in otherAttributes.allKeys) {
id aValue = [otherAttributes objectForKey:aKey];
[dictionary setObject:aValue forKey:aKey];
}
}
return [self boundingRectWithSize:size options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:dictionary context:nil];
}
- (NSMutableAttributedString *)attributedStringWithcolor:(UIColor *)color subString:(NSString *)subString
{
NSMutableAttributedString * attributedString = [[NSMutableAttributedString alloc] initWithString:self];
if (![subString isKindOfClass:[NSString class]] || !subString.length) {
return attributedString;
}
NSRange range = [self rangeOfString:subString];
if (range.location != NSNotFound) {
[attributedString addAttribute:NSForegroundColorAttributeName value:color range:NSMakeRange(range.location, range.length)];
}
return attributedString;
}
- (NSMutableAttributedString *)attributedStringWithColorArray:(NSArray *)colorArray subStringArray:(NSArray *)subStringArray
{
NSMutableAttributedString * attributedString = [[NSMutableAttributedString alloc] initWithString:self];
NSInteger count = subStringArray.count;
if (count<2) {
return [self attributedStringWithcolor:colorArray[0] subString:subStringArray[0]];
}
for (NSInteger i=0; i<count; i++) {
NSString *subString= subStringArray[i];
if (![subString isKindOfClass:[NSString class]] || !subString.length) {
return attributedString;
}
NSRange range = [self rangeOfString:subString];
if (range.location != NSNotFound) {
[attributedString addAttribute:NSForegroundColorAttributeName value:colorArray[i] range:NSMakeRange(range.location, range.length)];
}
}
return attributedString;
}
- (NSMutableAttributedString *)attributedStringWithAttributeds:(NSDictionary *)attributeds subString:(NSString *)subString{
NSMutableAttributedString * attributedString = [[NSMutableAttributedString alloc] initWithString:self];
if (![subString isKindOfClass:[NSString class]] || !subString.length) {
return attributedString;
}
NSRange range = [self rangeOfString:subString];
if (range.location != NSNotFound) {
// [attributedString addAttribute:NSForegroundColorAttributeName value:color range:NSMakeRange(range.location, range.length)];
[attributedString addAttributes:attributeds range:NSMakeRange(range.location, range.length)];
}
return attributedString;
}
/**
转变指定字符串
@param regArray 正则表达式数组
@param attributeds 指定属性
@return 返回的可变字符串
*/
- (NSMutableAttributedString *)changeStringWithReg:(NSArray *)regArray attributeds:(NSDictionary *)attributeds{
NSMutableAttributedString *attr = [[NSMutableAttributedString alloc] initWithString:self];
for (int i=0; i<regArray.count; i++) {
NSString *re = [regArray ty_ObjectWithIndex:i];
NSRegularExpression *regExp = [[NSRegularExpression alloc]initWithPattern:re
options:NSRegularExpressionDotMatchesLineSeparators
error:nil];
NSArray* match = [regExp matchesInString:self options:NSMatchingReportCompletion range:NSMakeRange(0, [self length])];
if (match.count != 0)
{
for (NSTextCheckingResult *matc in match)
{
NSRange range = [matc range];
[attr addAttributes:attributeds range:range];
}
}
}
return attr;
}
/**
插入图片
@param images 图片数组
@param font 字体
@param span 间距
@return 结果
*/
-(NSMutableAttributedString *)attributedStringWithImages:(NSArray<UIImage *> *)images font:(UIFont *)font imageSpan:(CGFloat)span{
NSMutableAttributedString *textAttrStr = [[NSMutableAttributedString alloc] init];
for (UIImage *img in images) {
NSTextAttachment *attach = [[NSTextAttachment alloc] init];
attach.image = img;
CGFloat imgH = font.pointSize;
CGFloat imgW = (img.size.width / img.size.height) * imgH;
attach.bounds = CGRectMake(0, -2 , imgW, imgH);
NSAttributedString *imgStr = [NSAttributedString attributedStringWithAttachment:attach];
[textAttrStr appendAttributedString:imgStr];
//标签后添加空格
[textAttrStr appendAttributedString:[[NSAttributedString alloc] initWithString:@" "]];
}
[textAttrStr appendAttributedString:[[NSAttributedString alloc]initWithString:self]];
//设置间距
if (span != 0) {
[textAttrStr addAttribute:NSKernAttributeName value:@(span)
range:NSMakeRange(0, images.count * 2/*由于图片也会占用一个单位长度,所以带上空格数量，需要 *2 */)];
}
return textAttrStr;
}
- (NSMutableDictionary *)getURLParameters {
// 查找参数
NSRange range = [self rangeOfString:@"?"];
if (range.location == NSNotFound) {
return nil;
}
NSMutableDictionary *params = [NSMutableDictionary dictionary];
// 截取参数
NSString *parametersString = [self substringFromIndex:range.location + 1];
// 判断参数是单个参数还是多个参数
if ([parametersString containsString:@"&"]) {
// 多个参数，分割参数
NSArray *urlComponents = [parametersString componentsSeparatedByString:@"&"];
for (NSString *keyValuePair in urlComponents) {
// 生成Key/Value
NSArray *pairComponents = [keyValuePair componentsSeparatedByString:@"="];
NSString *key = [pairComponents.firstObject stringByRemovingPercentEncoding];
NSString *value = [pairComponents.lastObject stringByRemovingPercentEncoding];
// Key不能为nil
if (key == nil || value == nil) {
continue;
}
id existValue = [params valueForKey:key];
if (existValue != nil) {
// 已存在的值，生成数组
if ([existValue isKindOfClass:[NSArray class]]) {
// 已存在的值生成数组
NSMutableArray *items = [NSMutableArray arrayWithArray:existValue];
[items addObject:value];
[params setValue:items forKey:key];
} else {
// 非数组
[params setValue:@[existValue, value] forKey:key];
}
} else {
// 设置值
[params setValue:value forKey:key];
}
}
} else {
// 单个参数
// 生成Key/Value
NSArray *pairComponents = [parametersString componentsSeparatedByString:@"="];
// 只有一个参数，没有值
if (pairComponents.count == 1) {
return nil;
}
// 分隔值
NSString *key = [pairComponents.firstObject stringByRemovingPercentEncoding];
NSString *value = [pairComponents.lastObject stringByRemovingPercentEncoding];
// Key不能为nil
if (key == nil || value == nil) {
return nil;
}
// 设置值
[params setValue:value forKey:key];
}
return params;
}
@end