Question

我对单选按钮有一些疑问，我希望保留所选的单选按钮，当我再次打开该视图时，我选择的单选按钮应保持选中状态。

-(void)viewDidAppear:(BOOL)animated {
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    if ([[defaults valueForKey:@"mobileNumber"] length]>0){
        MobileNum.text=[defaults valueForKey:@"mobileNumber"];
    }
    else {
        MobileNum.text=@"";
    }
    if ([[defaults valueForKey:@"amount"] length]>0) {
        amount.text=[defaults valueForKey:@"amount"];
    }
    else {
        amount.text=@"";
    }

    if ([[defaults valueForKey:@"operator"] length]>0) {
        operatorLabel.text = [defaults valueForKey:@"operator"];
    }else{
        operatorLabel.text = @"Select Operator";
    }

    if ([[defaults valueForKey:@"circle"] length]>0) {
        circleLabel.text = [defaults valueForKey:@"circle"];
    }else{
        circleLabel.text = @"Select Circle";
    }

    if ([defaults valueForKey:@"credit card"]) {
        [criditRadio setSelected:YES];

    }else{
        [criditRadio setSelected:NO];
    }
    if ([defaults valueForKey:@"debit card"]) {
        debitRadio.selected=YES;
    }else{
        debitRadio.selected=NO;
    }
    if ([defaults valueForKey:@"net bank"]) {
        netRadio.selected=NO;
    }
}

Answer 1

你的编码很好

if ([defaults valueForKey:@"credit card"]) {
    [criditRadio setSelected:YES];

}else{
    [criditRadio setSelected:NO];
}
if ([defaults valueForKey:@"debit card"]) {
    debitRadio.selected=YES;
}else{
    debitRadio.selected=NO;
}
if ([defaults valueForKey:@"net bank"]) {
    netRadio.selected=NO;
}

这里你需要每次比较NSUserdefault Value以浏览此页面在这里，我根据您的需要附加了示例项目，下载了project

的链接

当我再次查看同一个视图页面时如何保留选中的单选按钮？

1 个答案: