TextField Limit words (compatible with Chinese, copy, delete) IOS

This method has been searched several times, the personal test can be used for Chinese input detection, as well as copy, delete and so on limit the number of words have no effect.

[textname addTarget: self action:@selector (textfielddidchange:) forControlEvents:uicontroleventeditingchanged];

-(void) Textfielddidchange: (uitextfield *) TextField

{

if (TextField = = self. clockname) {

nsstring *tobestring = TextField. text;

nsstring *lang = [[uitextinputmode currentinputmode] Primary Language]; // keyboard Input mode

if ([lang isequaltostring:@ "Zh-hans"]) { // Simplified Chinese input, including simplified pinyin, fitness wubi, simplified handwriting

uitextrange *selectedrange = [TextField markedtextrange];

// get highlighted parts

uitextposition *position = [TextField positionfromposition: Selectedrange. Start offset:0];

// No highlighted words, word count and limit for typed text

if (!position) {

if (tobestring. length > clockname_max_length) {

TextField. text = [tobestring substringtoindex:clockname_max_length];

}

}

// with a highlighted string, the text is temporarily not counted and restricted

Else {

}

}

// Chinese Input method directly to its statistical restrictions, regardless of other languages

Else {

if (tobestring. length > clockname_max_length) {

TextField. text = [tobestring substringtoindex:clockname_max_length];

}

}

}

}

This article is from the "iOS Yo Bug" blog, be sure to keep this source http://ios2013yoyo.blog.51cto.com/6260005/1583271

TextField Limit words (compatible with Chinese, copy, delete) IOS