iOS中按钮边框及文字对齐设置

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    //创建UIButton

    UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    button1.frame = CGRectMake(10, 30, 300, 30);

  

    [button1 setTitle:@"圆角按钮" forState:UIControlStateNormal];

//    这句无效

//     button1.titleLabel.textAlignment = NSTextAlignmentLeft;

    button1.titleLabel.backgroundColor = [UIColor grayColor];

    button1.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;

    button1.titleEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);

    [button1.layer setBorderColor:[UIColor grayColor].CGColor];

    [button1.layer setBorderWidth:1];

    [button1.layer setCornerRadius:5.0f];

    [button1.layer setMasksToBounds:YES];

    [self.view addSubview:button1];

}