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POHow to draw the speech bubble as UITextview ContentSize
 

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  1. POHow to draw the speech bubble as UITextview ContentSize
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    <p>I draw the speech bubble using <code>UIBezierpath</code> in a <code>UIView</code> class. In the view class contain the UITextView. I am using the following code to used to draw the speech bubble.</p> <p>//BezierPathView.h</p> <pre><code>@interface BezierpathView : UIView&lt;UITextViewDelegate&gt;{ CGFloat animatedDistance; UITextView *LXVolabel; UIView *view; UIBezierPath* speechBubbleTopPath; UIBezierPath* rectanglePath; UIBezierPath* speechBubbleBottomPath; UIColor* darkGray; UIColor* shadow; CGSize shadowOffset; CGFloat shadowBlurRadius; NSString* textContent; } @property(nonatomic,strong)UIView *view; @property(nonatomic,strong)UITextView *LXVolabel; </code></pre> <p>//BezierPath.m</p> <pre><code>@implementation BezierpathView @synthesize LXVolabel,view; - (id)initWithFrame:(CGRect)frame{ self = [super initWithFrame:frame]; if (self) { self.backgroundColor = [UIColor clearColor]; self.LXVolabel = [[UITextView alloc]initWithFrame:CGRectMake(0, 0,self.frame.size.width , self.frame.size.height-10)]; self.LXVolabel.backgroundColor = [UIColor clearColor]; self.LXVolabel.delegate = self; self.LXVolabel.font = [UIFont systemFontOfSize:20]; [self addSubview:self.LXVolabel]; CGRect applicationFrame = [[UIScreen mainScreen] applicationFrame]; view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, applicationFrame.size.width, applicationFrame.size.height)]; // Color Declarations darkGray = [UIColor grayColor]; // Shadow Declarations shadow= [UIColor blackColor]; shadowOffset= CGSizeMake(0, 1); shadowBlurRadius= 1; // Abstracted Graphic Attributes textContent= LXVolabel.text; } return self; } - (void)drawRect:(CGRect)rect { [super drawRect:rect]; CGContextRef context = UIGraphicsGetCurrentContext(); // Drawing code //// General Declarations // speechBubbleTop Drawing speechBubbleTopPath = [UIBezierPath bezierPath]; [speechBubbleTopPath moveToPoint: CGPointMake(294, 7)]; [speechBubbleTopPath addCurveToPoint: CGPointMake(288, -0) controlPoint1: CGPointMake(294, 3.13) controlPoint2: CGPointMake(291.31, -0)]; [speechBubbleTopPath addLineToPoint: CGPointMake(8, -0)]; [speechBubbleTopPath addCurveToPoint: CGPointMake(2, 7) controlPoint1: CGPointMake(4.69, -0) controlPoint2: CGPointMake(2, 3.13)]; [speechBubbleTopPath addLineToPoint: CGPointMake(294, 7)]; [speechBubbleTopPath closePath]; [darkGray setFill]; [speechBubbleTopPath fill]; // Rectangle Drawing rectanglePath = [UIBezierPath bezierPathWithRect: CGRectMake(2, 6, 292,self.frame.size.height-15)]; CGContextSaveGState(context); CGContextSetShadowWithColor(context, shadowOffset, shadowBlurRadius, shadow.CGColor); [darkGray setFill]; [rectanglePath fill]; CGContextRestoreGState(context); // Text Drawing CGRect textRect = CGRectMake(7, 6, 292, self.frame.size.height-15); CGContextSaveGState(context); CGContextSetShadowWithColor(context, shadowOffset, shadowBlurRadius, shadow.CGColor); [[UIColor whiteColor] setFill]; [textContent drawInRect: textRect withFont: [UIFont fontWithName: @"Helvetica-Light" size: 14] lineBreakMode: NSLineBreakByWordWrapping alignment: NSTextAlignmentLeft]; //CGContextRestoreGState(context); float addedHeight = 100 -38; [self drawPath:addedHeight contextValue:context]; //speechBubbleBottom Drawing speechBubbleBottomPath = [UIBezierPath bezierPath]; [speechBubbleBottomPath moveToPoint: CGPointMake(2, 24+addedHeight)]; [speechBubbleBottomPath addCurveToPoint: CGPointMake(8, 30+addedHeight) controlPoint1: CGPointMake(2, 27.31+addedHeight) controlPoint2: CGPointMake(4.69, 30+addedHeight)]; [speechBubbleBottomPath addLineToPoint: CGPointMake(13, 30+addedHeight)]; [speechBubbleBottomPath addLineToPoint: CGPointMake(8, 42+addedHeight)]; [speechBubbleBottomPath addLineToPoint: CGPointMake(25, 30+addedHeight)]; [speechBubbleBottomPath addLineToPoint: CGPointMake(288, 30+addedHeight)]; [speechBubbleBottomPath addCurveToPoint: CGPointMake(294, 24+addedHeight) controlPoint1: CGPointMake(291.31, 30+addedHeight) controlPoint2: CGPointMake(294, 27.31+addedHeight)]; [speechBubbleBottomPath addLineToPoint: CGPointMake(2, 24+addedHeight)]; [speechBubbleBottomPath closePath]; CGContextSaveGState(context); CGContextSetShadowWithColor(context, shadowOffset, shadowBlurRadius, shadow.CGColor); [darkGray setFill]; [speechBubbleBottomPath fill]; CGContextRestoreGState(context); } -(void)textViewDidChange:(UITextView *)textView{ CGRect rect = textView.frame; rect.size.height = textView.contentSize.height;// Adding.size Since height is not a member of CGRect self.frame = CGRectMake(10, 20, textView.frame.size.width, textView.contentSize.height+20); textView.frame = rect; } </code></pre> <p>My thought is that when I have entered the text in the text view I want to increase the speech bubble size based on the text of the text view. But my speech bubble size does not increased correctly. How do I solve this issue?</p>
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