解決問題

1、根據標籤長度顯示；
2、多行顯示標籤；

程式碼片段：

- (void)viewDidLoad {
    [super viewDidLoad];

    NSArray *arr = @[@"JAVA",@"C",@"C++",@"PHP",@"Object-C",@"Swift",@"JAVAWEB",@"C#",@"MYSQL"];
    NSInteger x = 10;
    NSInteger y = 100;

    for (NSInteger i=0; i<arr.count; i++) {
        NSString *str = [arr objectAtIndex:i];
        CGSize
 
 size = [str sizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:16.0f]}];

        if (x + size.width > self.view.frame.size.width-20) {
            x = 10;
            y = y + size.height+5; //5為兩行之間的高度間隔
        }

        UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(x, y, size.width
 
, size.height)];
        label.text = str;
        label.font = [UIFont systemFontOfSize:16.0f];
        label.backgroundColor = [UIColor orangeColor];
        label.textColor = [UIColor whiteColor];
        [self.view addSubview:label];

        x = x + size.width +10; //10為兩個標籤之間的寬度間隔
    }

}