iOS.TextKit.01.凸版印刷效果

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1、案例視圖，如

2、代碼

TextKit01ViewController.h

#import <UIKit/UIKit.h>@interface TextKit01ViewController : UIViewController@property (nonatomic,strong) IBOutlet UITextView *textView;// 文本可以排版的地區@property (nonatomic,strong) NSTextContainer *textContainer;// 設定文本風格- (void) markWord:(NSString*)word inTextStorage:(NSTextStorage*)textStorage;@end

TextKit01ViewController.m

#import "TextKit01ViewController.h"@interface TextKit01ViewController ()@end@implementation TextKit01ViewController- (void)viewDidLoad{    [super viewDidLoad];        CGRect textViewRect = CGRectInset(self.view.bounds, 10.0, 20.0);        // 1、建立儲存文字物件textStorage    NSTextStorage *textStorage = [[NSTextStorage alloc] initWithString:self.textView.text];        // 2、建立文字排版對象layoutManager    NSLayoutManager *layoutManager = [[NSLayoutManager alloc] init];        // 3、建立文本排版的地區textContainer    self.textContainer = [[NSTextContainer alloc] initWithSize:textViewRect.size];        // 4、設定textStorage與layoutManager的關係    [textStorage addLayoutManager:layoutManager];        // 5、設定layoutManager與textContainer的關係    [layoutManager addTextContainer:self.textContainer];        // 6、重新構建原來的textview控制項    [self.textView removeFromSuperview];    self.textView = [[UITextView alloc] initWithFrame:textViewRect textContainer:self.textContainer];    [self.view addSubview:self.textView];        // 7、設定textStorage中文本的風格    [textStorage beginEditing];        NSDictionary *attrsDic = @{NSTextEffectAttributeName:NSTextEffectLetterpressStyle};    NSMutableAttributedString *attrStr = [[NSMutableAttributedString alloc] initWithString:self.textView.text attributes:attrsDic];    [textStorage setAttributedString:attrStr];        [self markWord:@"我" inTextStorage:textStorage];    [self markWord:@"I" inTextStorage:textStorage];        [textStorage endEditing];    }-(void)markWord:(NSString *)word inTextStorage:(NSTextStorage *)textStorage{    // 1、建立Regexregex    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:word options:0 error:nil];        // 2、掃描textStorage中的文本    NSArray *matches = [regex matchesInString:self.textView.text options:0 range:NSMakeRange(0, [self.textView.text length])];        // 3、為找到的常值內容設定風格    for (NSTextCheckingResult *match in  matches) {        NSRange matchRange = [match range];        [textStorage addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:matchRange];    }}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end