UITextview ContentSize

Question

के रूप में भाषण बबल को कैसे आकर्षित करें I UIBezierpathUIView कक्षा में भाषण बबल खींचें। दृश्य वर्ग में UITextView शामिल है। मैं भाषण बबल खींचने के लिए उपयोग किए जाने वाले निम्नलिखित कोड का उपयोग कर रहा हूं।

//BezierPathView.h

@interface BezierpathView : UIView<UITextViewDelegate>{ 

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; 

//BezierPath.m

@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; 
} 

मेरे सोचा कि जब मैं पाठ दृश्य का टेक्स्ट दर्ज किया है मैं स्पीच बबल आकार में वृद्धि करना चाहते है पाठ दृश्य के पाठ के आधार पर। लेकिन मेरा भाषण बबल आकार सही ढंग से नहीं बढ़ता है। मैं इस मुद्दे को कैसे हल करूं?

Answer 1

क्या टेक्स्ट बदलते समय आप रेड्रा को ट्रिगर कर रहे हैं?

textViewDidChange विधि में जोड़ें ...

[self setNeedsDisplay]; 

... अंतिम पंक्ति के रूप।

यह फिर से drawRect विधि को ट्रिगर करेगा।