【代碼筆記】iOS-將字串中特定後的字變成紅色，ios-字串

【代碼筆記】iOS-將字串中特定後的字變成紅色，ios-字串

一，。

二，代碼。

ViewController.m

- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.        UILabel *testLabel=[[UILabel alloc]initWithFrame:CGRectMake(10, 100, 100, 50)];    testLabel.text=@"1234567890";    testLabel.backgroundColor=[UIColor orangeColor];    [self.view addSubview:testLabel];        [self redXingWithLabel:testLabel atIndex:2];       }//將字串特定的1個字變成紅色- (void)redXingWithLabel:(UILabel *)tempLabel atIndex:(NSInteger)tempIndex {    NSMutableAttributedString * tempString = [[NSMutableAttributedString alloc] initWithString: tempLabel.text];    [tempString addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(tempIndex, 1)];    tempLabel.attributedText = tempString;}