ios 巧用UIButton的UIControlStateSelected属性

来源：互联网发布：数据分析师证编辑：程序博客网时间：2024/04/30 10:41

一般可以巧用UIBUtton的UIControlStateSelected属性，来设置UIButton的选中背景图片。

- (UIButton *)normalButton{    if (!_normalButton)    {        UIImage *_ljImage = [UIImage imageNamed:@"lj_unselect.png"];        _normalButton = [[UIButton alloc] initWithFrame:CGRectMake(kDEVICEWIDTH/2 - 80 - 40, 81 - 15, 50, 50)];        //_normalButton.backgroundColor = [UIColor redColor];        _normalButton.tag = 1000;        [_normalButton setImage:[UIImage imageNamed:@"lj_unselect.png"] forState:UIControlStateNormal];        [_normalButton setImage:[UIImage imageNamed:@"lj_select.png"] forState:UIControlStateSelected];        [_normalButton addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchUpInside];        [_normalButton setSelected:YES]; ／／默认选中状态    }    return _normalButton;}- (UIButton *)bigButton{    if (!_bigButton)    {        UIImage *_ljImage = [UIImage imageNamed:@"lj_unselect.png"];        _bigButton = [[UIButton alloc] initWithFrame:CGRectMake(kDEVICEWIDTH/2 + 42 -10, 81 - 15, 50, 50)];        //_bigButton.backgroundColor = [UIColor redColor];        _bigButton.tag = 2000;        [_bigButton setImage:[UIImage imageNamed:@"lj_unselect.png"] forState:UIControlStateNormal];        [_bigButton setImage:[UIImage imageNamed:@"lj_select.png"] forState:UIControlStateSelected];        [_bigButton addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchUpInside];    }    return _bigButton;}/* 字体选中按钮点击 */- (void)buttonClick:(UIButton *)sender{    sender.selected = !sender.selected;／／状态取反    if (sender.tag == 1000) //标准    {        [_bigButton setSelected:NO];    }    else if (sender.tag == 2000)//大    {        [_normalButton setSelected:NO];    }}

效果图：

阅读全文

0 0