UIpickerView的可重用
1 - (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view 2 { 3 4 NJCountryView *countryView = (NJCountryView *)view; 5 6 if (countryView == nil) { 7 NSLog(@"创建新的自定义view"); 8 countryView = [NJCountryView countryView]; 9 } 10 11 // 2.赋值模型数据 12 countryView.country = self.countrys[row]; 13 14 // 3.返回自定义view 15 return countryView; 16 }