UILabel文字居左显示,实现文字居左显示代码如下:
UILabel *label = [[UILabel alloc] init];
label.frame = CGRectMake(50, 100, 200, 50);
label.text = @"label";
label.textAlignment = NSTextAlignmentLeft;
label.backgroundColor = [UIColor orangeColor];
[self.view addSubview:label];
按照UILabel文字居左的写法,UIButton应该这么写:
button.titleLabel.textAlignment = NSTextAlignmentLeft;
我们发现UIButton的文字还是居中显示。竟然没有居左显示,怎么办呢?进UIButton看看,还有哪些属性。很快发现:
@property(nonatomic) UIControlContentHorizontalAlignment contentHorizontalAlignment; // how to position content hozontally inside control. default is center
typedef NS_ENUM(NSInteger, UIControlContentHorizontalAlignment) {
UIControlContentHorizontalAlignmentCenter = 0,
UIControlContentHorizontalAlignmentLeft = 1,
UIControlContentHorizontalAlignmentRight = 2,
UIControlContentHorizontalAlignmentFill = 3,
};
设置contentHorizontalAlignment
button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
完成!! 如果感觉看着居左显示很难看,太靠边。可以设置UIButton的titleEdgeInsets属性:
button.titleEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);
这样button的title就距左边10个像素的距离。
同理居右显示:
button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;