iOS Development property String nsattributestring and NSString convert to include picture

Share several commonly used property strings nsatrributestring and NSString Ordinary string conversion methods:

One: Replace the normal string with the property string containing the picture

plist file, picture format see:

+ (nsmutableattributedstring *) stringtoattributestring: (NSString *) text{    //First convert normal string text to generate attributed type string    nsmutableattributedstring * attstr = [[nsmutableattributedstring alloc]initwithstring:text];        NSString * Zhengze = @ "\\[[a-za-z0-9\\u4e00-\\u9fa5]+\\]"; Regular expressions, such as  [hehe] This form of wildcard character        Nserror * ERROR;

<span style= "font-family:arial, Helvetica, Sans-serif;" > nsregularexpression * re = [nsregularexpression regularexpressionwithpattern:zhengze options: Nsregularexpressioncaseinsensitive error:&error];//Regular expression </span> 

    if (!re) {NSLog (@ "%@", [Error localizeddescription]);//Print Error} Nsarray * arr = [Re matchesinstring:    Text options:0 range:nsmakerange (0, Text.length)];//traverse the string to get all the matching strings nsbundle *bundle = [NSBundle mainbundle];  NSString * Path = [bundle pathforresource:@ "Emotions" oftype:@ "plist"];  plist file, make an array containing text, emoji image name nsarray * face = [[Nsarray Alloc]initwithcontentsoffile:path]; Get all arrays//If there are multiple emoticons, it must be replaced from the back, since the range is inaccurate for (int j = (int) arr.count-1; j >= 0; j--) {//nstex                Tcheckingresult contains range Nstextcheckingresult * result = Arr[j]; for (int i = 0; i < Face.count; i++) {if ([[[Text SubstringWithRange:result.range] isequaltostring:face[i][@                                "CHS"])//From the dictionary in the array to take the element {NSString * imageName = [nsstring stringwithstring:face[i][@ "PNG"]];                              Nstextattachment * textattachment = [[nstextattachment alloc]init];//add attachment, picture  Textattachment.image = [UIImage imagenamed:imagename];                                nsattributedstring * Imagestr = [nsattributedstring attributedstringwithattachment:textattachment];                                [Attstr replaceCharactersInRange:result.range withattributedstring:imagestr];//Replace picture attachment            Break }}} return attstr;}

Two: Gets the size of the property string:

Note: For property strings that contain text and pictures, you need to adjust their size according to the actual situation.

+ (Cgsize) getattributedtextsize: (NSString *) text{//First convert normal string text to generate attributed type of string nsmutableattributedstring * att        STR = [[nsmutableattributedstring alloc]initwithstring:text];        NSString * Zhengze = @ "\\[[a-za-z0-9\\u4e00-\\u9fa5]+\\]";        Nserror * ERROR; Nsregularexpression * re = [nsregularexpression regularexpressionwithpattern:zhengze options:    Nsregularexpressioncaseinsensitive error:&error];    if (!re) {NSLog (@ "Regular expression matches error%@", [Error localizeddescription]);            } Nsarray * arr = [Re matchesinstring:text options:0 range:nsmakerange (0, text.length)]; if (!arr.count)//Description string does not have expression wildcard, is plain text, then calculate text size {nsdictionary *[email protected]{nsfontattributename: [UIF                        Ont systemfontofsize:14]}; Cgsize size1=[text Boundingrectwithsize:cgsizemake (+) Options:nsstringdrawinguseslinefragmentorigin                Attributes:dic context:nil].size; if (size1.height<=60) {size1.height=60;        } else {size1.height+=15;    } return size1;    } nsbundle *bundle = [NSBundle mainbundle];    NSString * Path = [bundle pathforresource:@ "Emotions" oftype:@ "plist"];        Nsarray * face = [[Nsarray Alloc]initwithcontentsoffile:path]; If you have more than one emoticon, you must replace it from the back, since the range is inaccurate for (int j = (int) arr.count-1; j >= 0; j--) {//nstextcheckingresult bread                Contains range Nstextcheckingresult * result = Arr[j]; for (int i = 0; i < Face.count; i++) {if ([[[Text SubstringWithRange:result.range] isequaltostring:face[i][@                                "CHS"]) {NSString * imageName = [nsstring stringwithstring:face[i][@ "PNG"]];                                Nstextattachment * textattachment = [[Nstextattachment alloc]init];                                Textattachment.image = [UIImage imagenamed:imagename]; nsattributedstring * Imagestr = [nsattrIbutedstring Attributedstringwithattachment:textattachment];                                [Attstr ReplaceCharactersInRange:result.range withattributedstring:imagestr];            Break }}} cgsize size2=[attstr Boundingrectwithsize:cgsizemake (+) Options:nsstringdrawinguseslinefrag        Mentorigin context:nil].size;  size2.height+=40; Emoji Add height return size2;//returns the dimension of the property string}

Three: attribute string to normal string, key point: Picture binary alignment (can be put into a sub-thread to do)

Picture binary alignment, get picture name:

Can't get the string name directly?-(NSString *) Stringfromimage: (UIImage *) image{    nsarray *face=[self getallimagepaths];        NSData * imaged = uiimagepngrepresentation (image);        NSString * IMAGENAME;        for (int i=0; i<face.count; i++)    {        UIImage *image=[uiimage imagenamed:face[i][@ "PNG"]];        NSData *data=uiimagepngrepresentation (image);        if ([imaged isequaltodata:data])        {            imagename=face[i][@ "CHS"];            NSLog (@ "match succeeded!");        }    }            return imageName;} -(Nsarray *) getallimagepaths//array structure or the above array structure {    nsbundle *bundle = [NSBundle mainbundle];        NSString * Path = [bundle pathforresource:@ "Emotions" oftype:@ "plist"];        Nsarray * face = [[Nsarray alloc]initwithcontentsoffile:path];        return face;}

The property string is converted to a normal string:

Assuming that Textview,label,button is the same

Turn the property string with the picture into a normal string-(NSString *) textstring{    nsattributedstring * att = self.attributedtext;        nsmutableattributedstring * Resutlatt = [[nsmutableattributedstring Alloc]initwithattributedstring:att];            __weak __block Uitextview * copy_self = self;    Enumerate all the attachment strings    [att enumerateattributesinrange:nsmakerange (0, att.length) options: Nsattributedstringenumerationreverse usingblock:^ (nsdictionary *attrs, Nsrange range, BOOL *stop) {        // Key-nsattachment        //nstextattachment value type        nstextattachment * Textatt = attrs[@ "Nsattachment"];// Get that picture from the dictionary        if (textatt)        {            UIImage * image = Textatt.image;            NSString * Text = [copy_self stringfromimage:image];            [Resutlatt Replacecharactersinrange:range withstring:text];                    }                    ];            return resutlatt.string;}

Original address: http://blog.csdn.net/yangbingbinga/

iOS Development property String nsattributestring and NSString convert to include picture