IOS Paint bubbles (bubble)

This article is about the iOS code draw bubbles, hand teach you to draw a bubble, other shapes please the reader to try their own, I hope you have fun!

speechbubbleview.m//demo////Created by mygame on 15/3/4.//Copyright (c) 2015 Mygame. All rights reserved.//#import "SpeechBubbleView.h" #import <CoreGraphics/CoreGraphics.h> #define Kpopuptriangleheigh 12#define kpopuptrianglewidth 22#define kborderoffset 0//0.5f@implementation SpeechBubbleView-(    Instancetype) initWithFrame: (cgrect) frame{self = [super Initwithframe:frame];    if (self) {self.backgroundcolor = [uicolor Purplecolor]; } return self;}        -(void) DrawRect: (cgrect) rect {[Super Drawrect:rect];    CGFloat vieww = rect.size.width;        CGFloat VIEWH = rect.size.height;    CGFloat strokewidth = 1;    CGFloat Borderradius = 10;        CGFloat offset = strokewidth + kborderoffset;    Cgcontextref context = Uigraphicsgetcurrentcontext (); Cgcontextsetlinejoin (context, kcglinejoinround); Cgcontextsetlinewidth (context, strokewidth); Sets the brush width cgcontextsetstrokecolorwithcolor (context, [Uicolor Lightgraycolor]. Cgcolor); Set Brush faceColor Cgcontextsetfillcolorwithcolor (context, [Uicolor Lightgraycolor]. Cgcolor); Set Fill color//Draw triangle/*---/*
/*

Draw the red part

*    /Cgcontextbeginpath (context);    Cgcontextmovetopoint (context, Borderradius+offset, viewh-kpopuptriangleheigh-offset);    Cgcontextaddlinetopoint (Context, round ((vieww-kpopuptrianglewidth)/2.0f) + offset, Viewh-kpopuptriangleheigh-offset);    Cgcontextaddlinetopoint (context, round (vieww/2.0f), viewh-offset);    Cgcontextaddlinetopoint (context, round (vieww+kpopuptrianglewidth)/2.0f) +offset,　　Viewh-kpopuptriangleheigh-offset);    //Draw the rest
/*
　

　　

*    /Cgcontextaddarctopoint (context, Vieww-offset, Viewh-kpopuptriangleheigh-offset, Vieww-offset, Kpopuptriangleheigh+offset, borderradius-strokewidth);    Cgcontextaddarctopoint (context, Vieww-offset, offset, vieww-borderradius-offset, offset, borderradius-strokewidth);    Cgcontextaddarctopoint (context, offset, offset, offset, borderradius+offset, borderradius-strokewidth);    Cgcontextaddarctopoint (context, offset, viewh-kpopuptriangleheigh-offset, Borderradius+offset, Viewh-kpopuptriangleheigh-offset, borderradius-strokewidth);    Cgcontextclosepath (context);    Cgcontextdrawpath (context, kcgpathfillstroke);} @end

For Cgcontextaddarctopoint interface explanation please click here

IOS Paint bubbles (bubble)