iOS lable上的文字自適應（sizetofit）後，獲得每一行的內容。返回一個包含所有行內容的數組。

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//  借鑒網路資源
- (void)viewDidLoad {    [super viewDidLoad];        UILabel * lb = [[UILabel alloc]initWithFrame:CGRectMake(10, 100, self.view.bounds.size.width-20, 100)];    lb.text = @"驕傲的複活甲卡薩丁涸鮒得水房間卡灰色的加咖啡和撒嬌款到發貨薩科技回合肥就愛看水電費黃金卡水電費哈是點擊看見啊來回飛機熬枯受淡飯盒刷了咖啡壺埃及開發哈空間的鳳凰卡積分導覽列";    [self.view addSubview:lb];    lb.font = [UIFont systemFontOfSize:16.0];    lb.numberOfLines = 0;    [lb sizeToFit];            NSLog(@"%@",[self getLinesArrOfStringInLbale:lb.text andLblWidth:lb.bounds.size.width andLblFont:lb.font]);        }- (NSArray *)getLinesArrOfStringInLbale:(NSString *)contentText andLblWidth:(CGFloat)lblWidth andLblFont:(UIFont *)lblFont{    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init];    [paragraphStyle setLineSpacing:6];        NSMutableAttributedString *setString = [[NSMutableAttributedString alloc]initWithString:contentText];    [setString addAttribute:NSParagraphStyleAttributeName value:UIPasteboardTypeAutomatic range:NSMakeRange(0, contentText.length)];    [setString addAttribute:NSFontAttributeName value:lblFont range:NSMakeRange(0, contentText.length)];        CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString((__bridge CFAttributedStringRef)setString);        CGMutablePathRef path = CGPathCreateMutable();    CGPathAddRect(path, NULL, CGRectMake(0, 0, lblWidth, 999999999));        CTFrameRef frame = CTFramesetterCreateFrame(framesetter, CFRangeMake(0, 0), path, NULL);        NSArray *lines = (__bridge NSArray *)CTFrameGetLines(frame);    NSMutableArray *linesArr = [NSMutableArray new];        for (id line in lines) {                CTLineRef lineRef = (__bridge CTLineRef)line;        CFRange lineRange = CTLineGetStringRange(lineRef);        NSRange range = NSMakeRange(lineRange.location, lineRange.length);        NSString *lineStirng = [contentText substringWithRange:range];        [linesArr addObject:lineStirng];            }    return (NSArray *)linesArr;}

 

iOS lable上的文字自適應（sizetofit）後，獲得每一行的內容。返回一個包含所有行內容的數組。