23.button.selected 选中方法 界面按钮出现 蓝

    _muteChangeButton = [UIButton buttonWithType:(UIButtonTypeCustom)];
    [_muteChangeButton addTarget:self action:@selector(muteChangeButtonAction:) forControlEvents:(UIControlEventTouchUpInside)];
    [self.bgView addSubview:_muteChangeButton];

button初始化的时候改为用户自定义的就好了,不要用系统的.