单击第一个按钮时,它变为高亮,单击第二个时,第二个突出显示,第一个变为正常

When clicking first button,it becomes highlighted and while clicking second,second highlighted and first become normal

我正在创建一个包含五个按钮的应用程序,已创建programmatically.The以下是要求...

点击第一个按钮时它保持不变 highlighted.while点击第二个按钮,第一个变为正常,第二个保持突出显示...即单击的特定按钮变为突出显示,所有其他按钮保持正常......请帮助..

我的解决方案是:

获取一个 属性 以跟踪所选按钮

@property (nonatomic, weak) UIBUtton *lastSelectedButton;

在您的按钮回调方法中(您在添加按钮时配置的选择器):

- (void)didClickButton:(UIButton *)button {
    if (self.lastSelectedButton isEqual:button) {
        // Don't need to do anything in this case because the button is already selected
        return;
    }
    [self.lastSelectedButton setSelected:NO];
    [button setSelected:YES];
    [self setLastSelectedButton:button];
}

如果您有任何问题或需要更多帮助,请告诉我!

您可以创建一个实例变量 int 来保存标签值。现在无论你点击哪个按钮,你都需要清除前一个按钮的标签值并将其分配给当前按钮。

例如:

int const TAG_HIGHLIGHTED_BUTTON = 100;

- (void)buttonAction:(UIButton *)button {
    UIButton *prevButton = [self.view viewWithTag:TAG_HIGHLIGHTED_BUTTON];
    [prevButton setTag:0];

    [button setTag:TAG_HIGHLIGHTED_BUTTON];
}

可以设置

[button setBackgroundImage:[UIImage imageNamed:@"normalbackgroundimage"] forState:UIControlStateNormal]; //not highlighted
[button setBackgroundImage:[UIImage imageNamed:@"highlightedbackgroundimage"] forState:UIControlStateHighlighted | UIControlStateSelected]; //highlighted

现在,当您设置 button.selected = YES 时,它会突出显示

所以你可以在点击按钮时做这样的事情

button1.selected = YES;
otherButton.selected = NO;

编辑

解决您的问题的简单方法是创建一个 ibaction 将其连接到您想要的所有按钮 selected/deselect 然后执行此操作

-(IBAction)someButtonPressed:(UIButton*)sender{
    button1.selected = NO;
    button2.selected = NO;
    button3.selected = NO; //and so on...just set all your buttons to selected = NO

    //at the end you just select button you clicked
    sender.selected = YES;
}