iOS添加UIButton源代码：can'；t控件UIButton标题栏文本对齐

我在

ui视图中添加了
ui按钮

    UIButton *switchButtonL = [UIButton buttonWithType: UIButtonTypeSystem];
    [switchButtonL addTarget:self action:@selector(switchCity:) forControlEvents:UIControlEventTouchUpInside];
    switchButtonL.frame =  CGRectMake(0, 50, self.screenWidth/2, 30);
    [switchButtonL setTitle: NSLocalizedString(@"switchcity", nil) forState:UIControlStateNormal];
    [switchButtonL setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [switchButtonL setTitleColor:[UIColor blueColor] forState:UIControlStateSelected];
    [switchButtonL setBackgroundColor:[UIColor clearColor] ];
    switchButtonL.titleLabel.textAlignment = NSTextAlignmentLeft; // this line can't work
    switchButtonL.titleLabel.font = [UIFont fontWithName:@"HelveticaNeue-Light" size:18];
    [self addSubview:switchButtonL];

注释行无法工作，文本始终居中对齐。

您可以从上图所示的xib更改它。如果您想通过代码进行更改，请在您所需的职位上使用：

self.yourbtn.titleEdgeInsets=UIEdgeInsetsMake(topVal, leftVal, downVal, rightVal); 


您可以从上图所示的xib更改它。如果您想通过代码进行更改，请在您所需的职位上使用：

self.yourbtn.titleEdgeInsets=UIEdgeInsetsMake(topVal, leftVal, downVal, rightVal); 

试试这个

switchButtonL.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
switchButtonL.contentEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);

试试这个

switchButtonL.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
switchButtonL.contentEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);

试用替代品

switchButtonL.titleLabel.textAlignment = NSTextAlignmentLeft; // this line can't work

与：

试用替代品

switchButtonL.titleLabel.textAlignment = NSTextAlignmentLeft; // this line can't work

与：

如果任何答案与u相关，请打勾如果任何答案与u相关，请打勾