iOS禁止所有输入法表情的方法

本文实例为大家分享了ios禁止所有输入法表情的具体代码，供大家参考，具体内容如下

- (bool)textview:(uitextview *)textview shouldchangetextinrange:(nsrange)range replacementtext:(nsstring *)text {
  //禁止所有输入法的表情
  if ([self iscontainstwoemoji:text]) {
    return no;
  }
  return yes;
}

//判断是否是表情字符

- (bool)iscontainstwoemoji:(nsstring *)string {
  __block bool iseomji = no;
  [string enumeratesubstringsinrange:nsmakerange(0, [string length]) options:nsstringenumerationbycomposedcharactersequences usingblock:
   ^(nsstring *substring, nsrange substringrange, nsrange enclosingrange, bool *stop) {
     const unichar hs = [substring characteratindex:0];
     //     nslog(@"hs++++++++%04x",hs);
     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)
         {
           iseomji = yes;
         }
         //         nslog(@"uc++++++++%04x",uc);
       }
     } else if (substring.length > 1) {
       const unichar ls = [substring characteratindex:1];
       if (ls == 0x20e3|| ls ==0xfe0f) {
         iseomji = yes;
       }
       //       nslog(@"ls++++++++%04x",ls);
     } else {
       if (0x2100 <= hs && hs <= 0x27ff && hs != 0x263b) {
         iseomji = yes;
       } else if (0x2b05 <= hs && hs <= 0x2b07) {
         iseomji = yes;
       } else if (0x2934 <= hs && hs <= 0x2935) {
         iseomji = yes;
       } else if (0x3297 <= hs && hs <= 0x3299) {
         iseomji = yes;
       } else if (hs == 0xa9 || hs == 0xae || hs == 0x303d || hs == 0x3030 || hs == 0x2b55 || hs == 0x2b1c || hs == 0x2b1b || hs == 0x2b50|| hs == 0x231a ) {
         iseomji = yes;
       }
     }
   }];
  return iseomji;
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。