iOS如何将字符串中特定后的字变成红色
时间：2020-11-21 14:40:49 | 栏目：iOS代码 | 点击：次
一，效果图。
二，代码。
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];
}
//将字符串特定的1个字变成红色
- (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;
}