Dynamic UITableView Cell Height Based on Contents

Question

I have a UITableView that is populated with custom cells (inherited from UITableViewCell), each cell contains a UIWebView that is auto

Answer 1

I had very large test in UILabel. Above all fail to work, then i create category for string as below and got the exact height

- (CGFloat)heightStringWithEmojifontType:(UIFont *)uiFont ForWidth:(CGFloat)width {

// Get text
CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutable(kCFAllocatorDefault, 0);
CFAttributedStringReplaceString (attrString, CFRangeMake(0, 0), (CFStringRef) self );
CFIndex stringLength = CFStringGetLength((CFStringRef) attrString);

// Change font
CTFontRef ctFont = CTFontCreateWithName((__bridge CFStringRef) uiFont.fontName, uiFont.pointSize, NULL);
CFAttributedStringSetAttribute(attrString, CFRangeMake(0, stringLength), kCTFontAttributeName, ctFont);

// Calc the size
CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString(attrString);
CFRange fitRange;
CGSize frameSize = CTFramesetterSuggestFrameSizeWithConstraints(framesetter, CFRangeMake(0, 0), NULL, CGSizeMake(width, CGFLOAT_MAX), &fitRange);

CFRelease(ctFont);
CFRelease(framesetter);
CFRelease(attrString);

return frameSize.height + 10;}