When doing the project, TextField can input the expression, but the iOS expression is two characters, and then calculate the length of the string is not the same as imagined, so the use of the method will be the length of the expression to 1, the last to get the length of the string is to see the actual length.
The method uses the iOS expression code, does not understand the concrete is what, but knows those is the expression code, according to this code can find the concrete is that expression.
This method is referenced from: http://blog.csdn.net/liujinlongxa/article/details/44207003
-(Nsinteger) getstringlengthwithstring: (NSString *) string
{
__block Nsinteger stringlength = 0;
[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)
{
Stringlength + = 1;
}
Else
{
Stringlength + = 1;
}
}
Else
{
Stringlength + = 1;
}
} else if (Substring.length > 1)
{
Const UNICHAR ls = [substring characteratindex:1];
if (ls = = 0x20e3)
{
Stringlength + = 1;
}
Else
{
Stringlength + = 1;
}
} else {
if (0x2100 <= HS && HS <= 0X27FF)
{
Stringlength + = 1;
}
else if (0x2b05 <= HS && HS <= 0X2B07)
{
Stringlength + = 1;
}
else if (0x2934 <= HS && HS <= 0x2935)
{
Stringlength + = 1;
}
else if (0x3297 <= HS && HS <= 0x3299)
{
Stringlength + = 1;
}
else if (hs = = 0XA9 | | hs = = 0XAE | | hs = = 0X303D | | hs = = 0X3030 | | hs = = 0X2B55 | | hs = = 0X2B1C | | hs = = 0X2B1B | | hs = = 0X2B50)
{
Stringlength + = 1;
}
Else
{
Stringlength + = 1;
}
}
}];
return stringlength;
}
Enclosure:
iOS emoji set:
- NSString *s = @ "This was a smiley/ue415 face";
- Testface.text = s;
- The/ue415 above is the expression code. More expressions are as follows:
- /ue415/ue056/ue057/ue414/ue405/ue106/ue418
- /ue417/ue40d/ue40a/ue404/ue105/ue409/ue40e
- /ue402/ue108/ue403/ue058/ue407/ue401/ue40f
- /ue40b/ue406/ue413/ue411/ue412/ue410/ue107
- /ue059/ue416/ue408/ue40c/ue11a/ue10c/ue32c
- /ue32a/ue32d/ue328/ue32b/ue022/ue023/ue327
- /ue329/ue32e/ue32f/ue335/ue334/ue021/ue337
- /ue020/ue336/ue13c/ue330/ue331/ue326/ue03e
- /ue11d/ue05a/ue00e/ue421/ue420/ue00d/ue010
- /ue011/ue41e/ue012/ue422/ue22e/ue22f/ue231
- /ue230/ue427/ue41d/ue00f/ue41f/ue14c/ue201
- /ue115/ue428/ue51f/ue429/ue424/ue423/ue253
- /ue426/ue111/ue425/ue31e/ue31f/ue31d/ue001
- /ue002/ue005/ue004/ue51a/ue519/ue518/ue515
- /ue516/ue517/ue51b/ue152/ue04e/ue51c/ue51e
- /ue11c/ue536/ue003/ue41c/ue41b/ue419/ue41a
- /ue04a/ue04b/ue049/ue048/ue04c/ue13d/ue443
- /ue43e/ue04f/ue052/ue053/ue524/ue52c/ue52a
- /ue531/ue050/ue527/ue051/ue10b/ue52b/ue52f
- /ue528/ue01a/ue134/ue530/ue529/ue526/ue52d
- /ue521/ue523/ue52e/ue055/ue525/ue10a/ue109
- /ue522/ue019/ue054/ue520/ue306/ue030/ue304
- /ue110/ue032/ue305/ue303/ue118/ue447/ue119
- /ue307/ue308/ue444/ue441
- /ue436/ue437/ue438/ue43a/ue439/ue43b/ue117
- /ue440/ue442/ue446/ue445/ue11b/ue448/ue033
- /ue112/ue325/ue312/ue310/ue126/ue127/ue008
- /ue03d/ue00c/ue12a/ue00a/ue00b/ue009/ue316
- /ue129/ue141/ue142/ue317/ue128/ue14b/ue211
- /ue114/ue145/ue144/ue03f/ue313/ue116/ue10f
- /ue104/ue103/ue101/ue102/ue13f/ue140/ue11f
- /ue12f/ue031/ue30e/ue311/ue113/ue30f/ue13b
- /ue42b/ue42a/ue018/ue016/ue015/ue014/ue42c
- /ue42d/ue017/ue013/ue20e/ue20c/ue20f/ue20d
- /ue131/ue12b/ue130/ue12d/ue324/ue301/ue148
- /ue502/ue03c/ue30a/ue042/ue040/ue041/ue12c
- /ue007/ue31a/ue13e/ue31b/ue006/ue302/ue319
- /ue321/ue322/ue314/ue503/ue10e/ue318/ue43c
- /ue11e/ue323/ue31c/ue034/ue035/ue045/ue338
- /ue047/ue30c/ue044/ue30b/ue043/ue120/ue33b
- /ue33f/ue341/ue34c/ue344/ue342/ue33d/ue33e
- /ue340/ue34d/ue339/ue147/ue343/ue33c/ue33a
- /ue43f/ue34b/ue046/ue345/ue346/ue348/ue347
- /ue34a/ue349
- /ue036/ue157/ue038/ue153/ue155/ue14d/ue156
- /ue501/ue158/ue43d/ue037/ue504/ue44a/ue146
- /ue50a/ue505/ue506/ue122/ue508/ue509/ue03b
- /ue04d/ue449/ue44b/ue51d/ue44c/ue124/ue121
- /ue433/ue202/ue135/ue01c/ue01d/ue10d/ue136
- /ue42e/ue01b/ue15a/ue159/ue432/ue430/ue431
- /ue42f/ue01e/ue039/ue435/ue01f/ue125/ue03a
- /ue14e/ue252/ue137/ue209/ue154/ue133/ue150
- /ue320/ue123/ue132/ue143/ue50b/ue514/ue513
- /ue50c/ue50d/ue511/ue50f/ue512/ue510/ue50e
- /ue21c/ue21d/ue21e/ue21f/ue220/ue221/ue222
- /ue223/ue224/ue225/ue210/ue232/ue233/ue235
- /ue234/ue236/ue237/ue238/ue239/ue23b/ue23a
- /ue23d/ue23c/ue24d/ue212/ue24c/ue213/ue214
- /ue507/ue203/ue20b/ue22a/ue22b/ue226/ue227
- /ue22c/ue22d/ue215/ue216/ue217/ue218/ue228
- /ue151/ue138/ue139/ue13a/ue208/ue14f/ue20a
- /ue434/ue309/ue315/ue30d/ue207/ue229/ue206
- /ue205/ue204/ue12e/ue250/ue251/ue14a/ue149
- /ue23f/ue240/ue241/ue242/ue243/ue244/ue245
- /ue246/ue247/ue248/ue249/ue24a/ue24b/ue23e
- /ue532/ue533/ue534/ue535/ue21a/ue219/ue21b
- /ue02f/ue024/ue025/ue026/ue027/ue028/ue029
- /ue02a/ue02b/ue02c/ue02d/ue02e/ue332/ue333
- /ue24e/ue24f/ue537
iOS tip: Calculate the length of a string (if you have an emoticon, the length of the expression is 1)
