iOS - 標籤

標籤的用法

標籤用於顯示靜態內容，這些內容由單行或多行組成。

重要屬性

• textAlignment
• textColor
• text
• numberOflines
• lineBreakMode

新增自定義方法 addLabel

-(void)addLabel {
   UILabel *aLabel = [[UILabel alloc]initWithFrame:
   CGRectMake(20, 200, 280, 80)];
   aLabel.numberOfLines = 0;
   aLabel.textColor = [UIColor blueColor];
   aLabel.backgroundColor = [UIColor clearColor];
   aLabel.textAlignment = UITextAlignmentCenter;
   aLabel.text = @"This is a sample text\n of multiple lines.
   here number of lines is not limited.";
   [self.view addSubview:aLabel];
}

在 ViewController.m 中更新 viewDidLoad，如下所示 −

- (void)viewDidLoad {
   [super viewDidLoad];
   
   //The custom method to create our label is called
   [self addLabel];
   // Do any additional setup after loading the view, typically from a nib.
}

輸出

當我們執行應用程式時，將獲得以下輸出 −