IOS Multiple tabs dynamic arrangement

As shown in the figure above:

Custom label, self-arranged, can control margin, line spacing, enumerate, achieve neat free arrangement, say not much, see code

. m Main Page #import "ViewController.h" #import "TagsFrame.h" @interface Viewcontroller () {tagsframe *_frame;
Nsarray *_tagsarray;

    @end @implementation Viewcontroller-(void) viewdidload {[Super viewdidload]; _tagsarray = @[@ "All", @ "haha haha", @ "a little bit more", @ "he la la la la", @ "hair ha several", @ "鞥 UNV", @ "Lushan International regret", @ "lllllldaffff", @ "Lalalalall", @ " La la la la la, @ "meow meow Meow", @ "囖 囖 囖 囖 Everyone development and 囖 囖", @ "Ann", @ "right", @ "wrong", @ "initial tone Miku", @ "Animenz hahaha haha", @ "Penbeat", @ "OP", @ "Ilem", @ "original",

    @ "Work with BGM", @ "hit the car", @ "David repeatedly", @ "BGM", @ "LAUNCHPAD"];
    _frame = [[Tagsframe alloc] init];
    _frame.tagsarray = _tagsarray;
[Self createsubview];
    }-(void) Createsubview {UIView *backview = [[UIView alloc] init];
    Backview.frame = CGRectMake (0, Self.view.frame.size.width, self.view.frame.size.height-64);

    [Self.view Addsubview:backview]; For (Nsinteger i=0 i< _tagsarray.count; i++) {UIButton *tagsbtn = [UIButton buttonwithtype:uibuttontypecustom
        ]; [Tagsbtn Settitle:_tagsarray[i] Forstate:uicontrolsTatenormal];
        [Tagsbtn Settitlecolor:[uicolor Blackcolor] forstate:uicontrolstatenormal];
        TagsBtn.titleLabel.font = Tagstitlefont;
        Tagsbtn.backgroundcolor = [Uicolor Whitecolor];
        TagsBtn.layer.borderWidth = 1; TagsBtn.layer.borderColor = [Uicolor Lightgraycolor].
        Cgcolor;
        TagsBtn.layer.cornerRadius = 4;
        TagsBtn.layer.masksToBounds = YES;
        Tagsbtn.frame = cgrectfromstring (_frame.tagsframes[i]);
    [Backview ADDSUBVIEW:TAGSBTN]; }} @end

//label frame package #import <Foundation/Foundation.h> #import <UIKit/UIKit.h> #define WIDTH [UIScreen mainscreen].bounds.size.width #define HEIGHT [UIScreen mainscreen].bounds.size.height #define Tagstitlefont [Uifont systemfontofsize:13] @interface tagsframe:nsobject/** Tag name array */@property (nonatomic, Strong) NS
Array *tagsarray;
/** Label Frame Array */@property (nonatomic, strong) Nsmutablearray *tagsframes;
/** All Label Height * * @property (nonatomic, assign) CGFloat tagsheight;
/** label spacing default is 10*/@property (nonatomic, assign) CGFloat tagsmargin;
/** tab Line Spacing default is 10*/@property (nonatomic, assign) CGFloat tagslinespacing;

/** label minimum inner margin default is 10*/@property (nonatomic, assign) CGFloat tagsminpadding; @end 

Calculate the position//label of multiple labels according to the text adaptive width//Line over width evenly assigned to each label//each row of labels around its #import "TagsFrame.h" @implementation Tagsframe-(ID) I
    NIT {//Initialize self = [super init];
        if (self) {_tagsframes = [Nsmutablearray array];
        _tagsminpadding = 10;
        _tagsmargin = 10;
    _tagslinespacing = 10;
return self;

    }-(void) Settagsarray: (Nsarray *) Tagsarray {_tagsarray = Tagsarray;
    CGFloat btnx = _tagsmargin;
    CGFloat BTNW = 0;  CGFloat nextwidth = 0;  The width of the next label cgfloat morewidth = 0;
    Each line more than the width//each row of the last tag index array and each row more than the width of the array nsmutablearray *lastindexs = [Nsmutablearray array];

    Nsmutablearray *morewidths = [Nsmutablearray array]; For (Nsinteger i=0 i<tagsarray.count; i++) {btnw = [self sizewithtext:tagsarray[i] Font:tagstitlefont].width
        + _tagsminpadding * 2; if (I < tagsarray.count-1) {nextwidth = [self sizewithtext:tagsarray[i+1] Font:tagstitlefont].width + _tag
      Sminpadding * 2;  } cgfloat nextbtnx = btnx + btnw + _tagsmargin; If the Next button, at the far right of the label, wraps the line if ((Nextbtnx + nextwidth) > (WIDTH-_tagsmargin)) {///calculation exceeds width mo
            Rewidth = width-nextbtnx;
            [Lastindexs Addobject:[nsnumber numberwithinteger:i]];
            [Morewidths Addobject:[nsnumber Numberwithfloat:morewidth]];
        Btnx = _tagsmargin;
        }else{btnx + = (btnw + _tagsmargin); //If the last one is not in the array, the last one is added to the array if (i = = tagsarray.count-1) {if (![ Lastindexs Containsobject:[nsnumber Numberwithinteger:i]] {[Lastindexs addobject:[nsnumber numberWithInt
                EGER:I]];
            [Morewidths Addobject:[nsnumber numberwithfloat:0]];  }} Nsinteger location = 0;    Intercept the position nsinteger length = 0;    Length of interception cgfloat Averagew = 0;
    The average width of the cgfloat TAGW = 0;

    CGFloat Tagh = 30;
  For (Nsinteger i=0 i<lastindexs.count; i++) {      Nsinteger lastindex = [lastindexs[i] integervalue];
        if (i = = 0) {length = lastindex + 1;
        }else{length = [lastindexs[i] integervalue]-[lastindexs[i-1] integervalue];
        ///intercept an array of each row from the array nsarray *newarr = [Tagsarray subarraywithrange:nsmakerange (location, length)];
        Location = lastindex + 1;
        Averagew = [Morewidths[i] floatvalue]/newarr.count;
        CGFloat tagx = _tagsmargin;

        CGFloat tagy = _tagslinespacing + (_tagslinespacing + tagh) * I; For (Nsinteger j=0 j<newarr.count; j + +) {TAGW = [self sizewithtext:newarr[j] Font:tagstitlefont].width +
            _tagsminpadding * 2 + Averagew;
            CGRect BTNF = CGRectMake (Tagx, Tagy, TAGW, Tagh);
            [_tagsframes Addobject:nsstringfromcgrect (BTNF)];
        Tagx + = (tagw+_tagsmargin);
} _tagsheight = (Tagh + _tagslinespacing) * lastindexs.count + _tagslinespacing; /** * Single-line text data gain width high * * @paramText text * @param font font * * @return wide/high/(Cgsize) Sizewithtext: (NSString *) text font: (Uifont *) font {NSDICTI
    Onary *attrs = @{nsfontattributename:font};
return [text Sizewithattributes:attrs]; } @end