我在一个带有完成和取消按钮的uipopover中有一个运行良好的uipickerview。当用户多次打开uipickerview时,我可以保存最后一行并将其显示为默认行。问题是,当用户注销和登录时,我希望uipickerview重新启动,即当我打开uipickerview并单击"完成"按钮(不选择任何行)时,我想让它与默认行(即row0)一起运行,但它显示的是注销前最后一个选择的行!!我该如何解决这个问题??非常感谢您的帮助。
NSString *selectedType = @"ALL";
int rowselected = 0;
- (void)viewDidLoad
{
[super viewDidLoad];
rowselected = 0;
_typearray = [[NSArray alloc] initWithObjects:@"ALL", @"COACH", @"GROUP", @"PRIVATE", nil];
NSInteger lastrow =[[[NSUserDefaults standardUserDefaults] objectForKey:@"gueststyperow"] integerValue];
if(lastrow!=0)
[self.picktype selectRow:lastrow inComponent:0 animated:NO];
else
[self.picktype selectRow:0 inComponent:0 animated:NO];
}
//完成按钮按下:
- (IBAction)doneButtonPress:(UIBarButtonItem *)sender {
NSLog(@"%@",_delegate);
NSNumber *temprow = [NSNumber numberWithInt:rowselected];
[[NSUserDefaults standardUserDefaults] setValue:temprow forKey:@"gueststyperow"];
[_delegate sendtype:selectedType];
}
//PICKERVIEW选择
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row
inComponent:(NSInteger)component{
rowselected = row;
selectedType = [_typearray objectAtIndex:row];
}
将其置于[super viewDidLoad]
:之上
[picker reloadAllComponents];
[picker selectRow:0 inComponent:0 animated:YES];
这应该将pickerview设置为每次加载视图时都将0索引排成一行。