1.獲取字符串寬高
/**
*? 獲取字符串寬高
*
*? @param string 字符串
*? @param font? 字體大小
*? @param startSize 設定初始寬高 獲取以此為模板
*
*? @return 寬高
*/
+(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.判斷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(@"過濾完---%d",returnValue);
return str;
}
