iOS UIPickerView 如何在委托方法之外获取选中的行
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iOS UIPickerView how to get the selected row outside the delegate method
提问by Bogdan Alexandru
I know the UIPickerView has this method:
我知道 UIPickerView 有这个方法：
- (void)pickerView:(UIPickerView *)pickerView
didSelectRow:(NSInteger)row
inComponent:(NSInteger)component
But inside this method, I want to get the selected row of other components. How on Earth can I do that?
但是在此方法中，我想获取其他组件的选定行。我到底怎么能做到这一点？
回答by iPatel
You can get selected row number anywhere by using selectedRowInComponentmethod of UIPickerView.
您可以使用 的selectedRowInComponent方法在任何地方获取选定的行号UIPickerView。
Such like
像这样
NSString *YourselectedTitle = [self.yourArrayName objectAtIndex:[self.yourPickerName selectedRowInComponent:0]];
NSLog(@"%@", YourselectedTitle);
回答by Dani
Old question but if someone like me is working with Swift 2.0 now the answer is
老问题，但如果像我这样的人现在正在使用 Swift 2.0，答案是
let row = self.myPicker.selectedRowInComponent(0)
let value = myArray[row]
I wrote 0 to component value because my picker has only one component, but it could have more than one such as datepicker with Date and Time
我将 0 写入组件值，因为我的选择器只有一个组件，但它可能有多个组件，例如带有日期和时间的 datepicker
You can even use this method outside the function that you were talking about if you keep an outlet of your pickerview
如果您保留pickerview的出口，您甚至可以在您正在谈论的功能之外使用此方法
