[英]Reading value from selected row in picker
i have created picker in Xcode with 3 columns, 2. and 3. column are filled with data based on the data in first column. 我已经在Xcode中用3列,2。和3.创建了选择器,并根据第一列中的数据填充了数据。 It works fine, and data is displaying correctly, my only problem is how can i write value that is currently displaying ing selected row for 2. and 3. column to some string?
它工作正常,数据正确显示,我唯一的问题是如何将当前显示的2和3列的所选值写入某个字符串?
Thank you. 谢谢。
Use - [UIPickerView selectedRowInComponent:]
to determine which row is selected, and then return the object at that index within your data array. 使用-
[UIPickerView selectedRowInComponent:]
确定选择了哪一行,然后返回数据数组中该索引处的对象。
- (void)pickerView:(UIPickerView *)pickerView didSelectRow: (NSInteger)row inComponent:(NSInteger)component {
NSInteger selectedRow = [pickerView selectedRowInComponent:0];
NSString *selectedPickerRow=[yourArrayOfElements objectAtIndex:selectedRow];
// Handle the selection
}
Implement didSelectRow
delegate 实现
didSelectRow
委托
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:row inSection:0];
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
NSString *cellText = [NSString stringWithString: cell.textLabel.text];
NSIndexPath *indexPath1 = [NSIndexPath indexPathForRow:row+1 inSection:0];
UITableViewCell *cell1 = [self.tableView cellForRowAtIndexPath:indexPath1];
NSString *cell1Text = [NSString stringWithString: cell1.textLabel.text];
NSIndexPath *indexPath2 = [NSIndexPath indexPathForRow:row+2 inSection:indexPath.section];
UITableViewCell *cell2 = [self.tableView cellForRowAtIndexPath:indexPath2];
NSString *cell2Text = [NSString stringWithString: cell2.textLabel.text];
}
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