Highlight multiple keywords

Project address: IOS keyword highlighted

Keyword highlighting is often used for search. The following are keywords used by my project.

650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M02/47/20/wKioL1P296uSzuyXAAKKrHjirkc034.jpg "Title =" key character highlight .png "alt =" wkiol1p296uszuyxaakkrhjirkc034.jpg "/>

1 // keyword array keyword color

[LB setattributedtext: Text withregularpattern: [text regularpattern: keyarr] attributes :@{ nsforegroundcolorattributename: [uicolor redcolor]}];

2

/**

Keyword Regular Expression judgment

*/

-(Nsstring *) regularpattern :( nsarray *) Keys {

Nsmutablestring * pattern = [[nsmutablestring alloc] initwithstring :@"(? I) "];

For (nsstring * key in keys ){

[Pattern appendformat: @ "% @ |", key];

}

Return pattern;

}

3

/**

Keyword highlighting settings

*/

-(Void) setattributedtext :( nsstring *) Text

Withregularexpression :( nsregularexpression *) Expression

Attributes :( nsdictionary *) attributesdict

{

Nsmutableattributedstring * attributedstring = [[nsmutableattributedstring alloc] initwithstring: text];

[Expression enumeratematchesinstring: Text

Options: 0

Range: nsmakerange (0, [text length])

Usingblock: ^ (nstextcheckingresult * result, nsmatchingflags flags, bool * Stop ){

Nsange matchrange = [result range];

If (attributesdict ){

[Attributedstring addattributes: attributesdict range: matchrange];

}

If ([result resulttype] = nstextcheckingtypelink ){

Nsurl * url = [result url];

[Attributedstring addattriename: nslinkattributename value: URL range: matchrange];

}

}];

[Self setattributedtext: attributedstring];

}

This article from the "iOS leisurely bug notes" blog, please be sure to keep this source http://ios2013yoyo.blog.51cto.com/6260005/1543550

Highlight multiple keywords