uipickerview - UIPickerView 是否选择行 :inComponent:animated: call pickerView:didSelectRow:inComponent:?

Question

UIPickerView 的 selectRow:inComponent:animated:调用pickerView:didSelectRow:inComponent: ?
否则，我可以自己打电话吗？

谢谢

Answer 1

您必须手动调用它，并通过委托(delegate)进行。

// In this example the UIPickerView object is in a property
...
self.pickerView.datasource = self;
self.pickerView.delegate = self;

// Selects the row in the specified component
[self.pickerView selectRow:0 inComponent:0 animated:NO];

// Manually calls pickerView:didSelectRow:inComponent:
[self pickerView:self.pickerView didSelectRow:0 inComponent:0];