Demo1
#//
//? ViewController.m
//? labeltext
//
//? Created by bj on 2017/9/2.
//? Copyright ? 2017年 Doctor. All rights reserved.
//
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
#define UILABEL_LINE_SPACE 3
#define HEIGHT [ [ UIScreen mainScreen ] bounds ].size.height
//給UILabel設置行間距和字間距
-(void)setLabelSpace:(UILabel*)label withValue:(NSString*)str withFont:(UIFont*)font {
NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];
paraStyle.lineBreakMode = NSLineBreakByCharWrapping;
paraStyle.alignment = NSTextAlignmentLeft;
paraStyle.lineSpacing = UILABEL_LINE_SPACE; //設置行間距
paraStyle.hyphenationFactor = 1.0;
paraStyle.firstLineHeadIndent = 0.0;
paraStyle.paragraphSpacingBefore = 0.0;
paraStyle.headIndent = 0;
paraStyle.tailIndent = 0;
//設置字間距 NSKernAttributeName:@1.5f
NSDictionary *dic = @{NSFontAttributeName:font, NSParagraphStyleAttributeName:paraStyle, NSKernAttributeName:@1.5f
};
NSMutableAttributedString *attributeStr = [[NSMutableAttributedString alloc] initWithString:str attributes:dic];
[attributeStr? addAttribute:NSForegroundColorAttributeName value:[UIColor? redColor] range:NSMakeRange(0, 4)];
label.attributedText = attributeStr;
}
//計算UILabel的高度(帶有行間距的情況)
-(CGFloat)getSpaceLabelHeight:(NSString*)str withFont:(UIFont*)font withWidth:(CGFloat)width {
NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];
paraStyle.lineBreakMode = NSLineBreakByCharWrapping;
paraStyle.alignment = NSTextAlignmentLeft;
paraStyle.lineSpacing = UILABEL_LINE_SPACE;
paraStyle.hyphenationFactor = 1.0;
paraStyle.firstLineHeadIndent = 0.0;
paraStyle.paragraphSpacingBefore = 0.0;
paraStyle.headIndent = 0;
paraStyle.tailIndent = 0;
NSDictionary *dic = @{NSFontAttributeName:font, NSParagraphStyleAttributeName:paraStyle, NSKernAttributeName:@1.5f
};
CGSize size = [str boundingRectWithSize:CGSizeMake(width, HEIGHT) options:NSStringDrawingUsesLineFragmentOrigin attributes:dic context:nil].size;
return size.height;
}
- (void)viewDidLoad {
[super viewDidLoad];
NSString * str = @"長大的寂寞第一次進入校園，遇見的便是一顆櫻花樹，很多學生在嬉戲打鬧，很想接近他們，可，還是，沒膽量。進入班級后，認識了很多人，但還是不敢主動去聊天，說話。以前，朋友之間的友誼很簡單，一場游戲、一件玩具，就可能因此成為朋友。以前牽著手在瓜田里玩耍，累了，就直接躺在地上，和伙伴們說著悄悄話，看螞蟻搬家，看蜻蜓點水……現(xiàn)在，有自尊心，總是害怕被拒絕，被孤立，被忽略。心里的事只能自己埋藏起來。班里會有很多的緋聞，搞得都不敢和異性接觸，整天就是在忙學習，稍微有一點躲藏什么東西就會被宣傳，都會被人好奇，每天和朋友也只是聊一會就繼續(xù)學習。朋友很多，但很少是親密，家長也總是不理解我們的心情，沒事就是被批，和朋友的距離越來越遠了……長大，好累，好寂寞。愛幫族美文網(wǎng)，欣賞更多美文";
UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(0, 100, 300, 300)];
label.backgroundColor = [UIColor? yellowColor];
label.numberOfLines = 0;
[self? setLabelSpace:label withValue:str withFont:[UIFont systemFontOfSize:17]];
CGRect? frame = label.frame;
frame.size.height = [self getSpaceLabelHeight:str withFont:[UIFont? systemFontOfSize:17] withWidth:300];
label.frame = frame;
[self.view addSubview:label];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
// Do any additional setup after loading the view, typically from a nib.
}
//富文本設置（根據(jù)NsRange? 改變顏色 和 大小）
-(NSMutableAttributedString? *)changeText:(NSString *)text timeFont:(UIFont *)timeFont withTimeColor:(UIColor *)timeColor? timeRange:(NSRange )timeRange? contentFont:(UIFont *)contentFont withContentColor:(UIColor *)contentColor? contentRange:(NSRange )contentRange{
NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];
paraStyle.lineBreakMode = NSLineBreakByCharWrapping;
paraStyle.alignment = NSTextAlignmentLeft;
paraStyle.lineSpacing = UILABEL_LINE_SPACE; //設置行間距
paraStyle.hyphenationFactor = 1.0;
paraStyle.firstLineHeadIndent = 0.0;
paraStyle.paragraphSpacingBefore = 0.0;
paraStyle.headIndent = 0;
paraStyle.tailIndent = 0;
//設置字間距 NSKernAttributeName:@1.5f
NSDictionary *dic = @{NSParagraphStyleAttributeName:paraStyle, NSKernAttributeName:@1.5f
};
NSMutableAttributedString *AttributedStr = [[NSMutableAttributedString alloc]initWithString:text];
[AttributedStr addAttribute:NSFontAttributeName
value:timeFont
range:timeRange];
[AttributedStr addAttribute:NSForegroundColorAttributeName
value:timeColor
range:timeRange];
[AttributedStr? addAttribute:NSFontAttributeName
value:contentFont
range:contentRange];
[AttributedStr? addAttribute:NSForegroundColorAttributeName
value:contentColor
range:contentRange];
[AttributedStr? addAttribute:NSHTMLTextDocumentType
value:contentColor
range:contentRange];
return AttributedStr;
}
+ (CGFloat)cellDefaultHeight:(TextEntity *)entity
{
//展開后得高度(計算出文本內(nèi)容的高度+固定控件的高度)
NSDictionary *attribute = @{NSFontAttributeName: [UIFont systemFontOfSize:17]};
NSStringDrawingOptions option = (NSStringDrawingOptions)(NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading);
NSString * timeText = @"90:90";
NSString * newContent = [[[TextListCell? alloc]init] removeHTML:entity.content];
NSString * withTime = [NSString? stringWithFormat:@"%@ %@",timeText,newContent];
CGSize size = [withTime boundingRectWithSize:CGSizeMake(kWidth - 30, 80) options:option attributes:attribute context:nil].size;
return size.height + 60;
//默認cell高度
//return 120.0;
}
+ (CGFloat)cellMoreHeight:(TextEntity *)entity
{
//展開后得高度(計算出文本內(nèi)容的高度+固定控件的高度)
NSDictionary *attribute = @{NSFontAttributeName: [UIFont systemFontOfSize:17]};
NSStringDrawingOptions option = (NSStringDrawingOptions)(NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading);
NSString * timeText = @"90:90";
NSString * newContent = [[[TextListCell? alloc]init] removeHTML:entity.content];
NSString * withTime = [NSString? stringWithFormat:@"%@ %@",timeText,newContent];
CGSize size = [withTime boundingRectWithSize:CGSizeMake(kWidth - 30, 100000) options:option attributes:attribute context:nil].size;
return (size.height + 60) ;
}
