iOS按钮中文字左对齐实现笔记

iOS按钮中文字左对齐实现笔记

直接上代码

    button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;

左边对齐之后太靠近控件边缘了,可以添加一些约束进行调整

UIEdgeInsetsMake的构造参数是上左下右

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

uitextField的设置左边特定间距实现

        UIView *paddingView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 15, 40)];
        paddingView.backgroundColor = [UIColor clearColor];
        _userNameTextField.leftViewMode = UITextFieldViewModeAlways;
        _userNameTextField.leftView = paddingView;