ios-开发中常用NSString 处理判断

1.获取字符串宽高

/**

*  获取字符串宽高

*

*  @param string 字符串

*  @param font  字体大小

*  @param startSize 设定初始宽高 获取以此为模板

*

*  @return 宽高

*/

+(CGSize)getSizeWithString:(NSString*)string andFont:(CGFloat)font andSetStartSize:(CGSize)startSize{

CGSize size = [string boundingRectWithSize:startSize options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:font]} context:nil].size;

return size;

}

2.判断字符串中是否包含表情

+ (NSString*)stringContainsEmoji:(NSString *)string

{

__block BOOL returnValue = NO;

__block NSString *str = nil;

[string enumerateSubstringsInRange:NSMakeRange(0, [string length])

options:NSStringEnumerationByComposedCharacterSequences

usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {

const unichar hs = [substring characterAtIndex:0];

if (0xd800 <= hs && hs <= 0xdbff) {

if (substring.length > 1) {

const unichar ls = [substring characterAtIndex:1];

const int uc = ((hs - 0xd800) * 0x400) + (ls - 0xdc00) + 0x10000;

if (0x1d000 <= uc && uc <= 0x1f77f) {

returnValue = YES;

}

}

} else if (substring.length > 1) {

const unichar ls = [substring characterAtIndex:1];

if (ls == 0x20e3) {

returnValue = YES;

}

} else {

if (0x2100 <= hs && hs <= 0x27ff) {

returnValue = YES;

} else if (0x2B05 <= hs && hs <= 0x2b07) {

returnValue = YES;

} else if (0x2934 <= hs && hs <= 0x2935) {

returnValue = YES;

} else if (0x3297 <= hs && hs <= 0x3299) {

returnValue = YES;

} else if (hs == 0xa9 || hs == 0xae || hs == 0x303d || hs == 0x3030 || hs == 0x2b55 || hs == 0x2b1c || hs == 0x2b1b || hs == 0x2b50) {

returnValue = YES;

}

}

if (returnValue) {

str = [string stringByReplacingOccurrencesOfString:substring withString:@""];

}else{

str = nil;

}

}];

//    MOSLog(@"过滤完---%d",returnValue);

return str;

}

3.电话号 邮箱判断，html字符串处理,字符串是否包含表情 等等.........  

下载地址:github.com/C100515C/NSStringHandle.git