iOS Learning-11. Rounded corners (less than or equal to four) similar to bubbles and calculated character Heights

Using Bezier curves,

//less than four fillet corners-(void) setbor{NSString*str =@"couldn ' t fit this all in a comment to @lomanf ' s answer. So I ' m adding it as an answer."; //Calculate character Height[Corner LayoutHeightWithLable:self.label text:str]; /*1. Use Blank view Addsubview label 2. Get similar QQ chat bubbles, just like, or there is a difference*/UIView*view =[[UIView alloc]init]; //the frame of the view is larger than the label, or the fillet is cut to the stringView.frame = CGRectMake ( -, -, _label.frame.size.width + -, _label.frame.size.height + -); View.backgroundcolor=[Uicolor Redcolor]; //Rounded Corners[Corner Createcornerinview:view corners:uirectcornerbottomleft| Uirectcornertopright Cgsize:cgsizemake (Ten,Ten)];    [Self.view Addsubview:view]; [View Addsubview:_label];}

A new class was created: Corner

. h

#import <UIKit/UIKit.h>@interface  corner:uiview+ (void) Createcornerinview: (UIView *) View Corners: (uirectcorner) Corner cgsize: (cgsize) size; + (void) layoutheightwithlable: (UILabel *) label text: (NSString *) text; @end

. m

+(void) Layoutheightwithlable: (UILabel *) label text: (NSString *) text{Label.numberoflines=0; Label.linebreakmode=nslinebreakbywordwrapping; Cgsize maxSize= Cgsizemake ( -, maxfloat); Cgsize textSize= [Text boundingrectwithsize:maxsize options: (nsstringdrawingusesfontleading |nsstringdrawinguseslinefragmentorigin) Attributes:@{nsfontattributename:label.font} context:nil].size; Label.frame=CGRectMake (label.frame.origin.x, LABEL.FRAME.ORIGIN.Y, Textsize.width, textsize.height); Label.text=text;}+(void) Createcornerinview: (UIView *) View Corners: (uirectcorner) Corner cgsize: (cgsize) size{/*typedef ns_options (Nsuinteger, uirectcorner) {uirectcornertopleft = 1 << 0,-upper left corner Uirectcorne Rtopright = 1 << 1,-upper right corner uirectcornerbottomleft = 1 << 2,-lower left corner uirectcornerbottomright = 1 <     ;< 3,-lower right corner uirectcornerallcorners = ~0ul-Four Corners}; */    //Bezier CurveUibezierpath *bezierpath =[Uibezierpath bezierPathWithRoundedRect:view.bounds byroundingcorners:corner cornerradii:size]; Cashapelayer*masklayer =[[Cashapelayer alloc]init]; Masklayer.frame=View.bounds; Masklayer.path=Bezierpath.cgpath; View.layer.mask=Masklayer;}

iOS Learning-11. Rounded corners (less than or equal to four) similar to bubbles and calculated character Heights