[ios] UIButton multi-line iOS7

button.titleLabel.lineBreakMode = UILineBreakModeWordWrap;
button.titleLabel.textAlignment = UITextAlignmentCenter;
[button setTitle: @"Line1\nLine2" forState: UIControlStateNormal];

button.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
button.titleLabel.textAlignment = NSTextAlignmentCenter;
[button setTitle: @"Line1\nLine2" forState: UIControlStateNormal];

_button = [UIButton buttonWithType:UIButtonTypeCustom];
_button.frame = CGRectMake(buttonWidth*1, 65, buttonWidth, 43);
_button.titleLabel.font = [UIFont systemFontOfSize:12];
_button.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
_button.titleLabel.textAlignment = NSTextAlignmentCenter;

[_button setTitle:@"라인1\n라인2" forState:UIControlStateNormal];

[_button setTitleColor:[UIColor
    colorWithRed:153/255.0
    green:153/255.0
    blue:153/255.0 alpha:1.0] forState:UIControlStateNormal];

[_button setTitleColor:[UIColor
    colorWithRed:81/255.0
    green:19/255.0
    blue:137/255.0 alpha:1.0] forState:UIControlStateSelected];

[_button setBackgroundImage:
    [UIImage imageNamed:@"06_setting_category_tab_n"]
    forState:UIControlStateNormal];

[_button setBackgroundImage:
    [UIImage imageNamed:@"06_setting_category_tab_s"]
    forState:UIControlStateSelected];

[_button addTarget:self
    action:@selector(_buttonAction:)
    forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:_button];