我想让 UITableView 像 Accordion 一样。当一行被点击时,它应该在被点击的行的正下方插入一个特殊的行,然后从之前的点击中删除任何其他特殊的行。我已经尝试了很多东西,但下面的代码是我最近的尝试。
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSIndexPath *removeIndex;
for (int i = 0; i < [players count]; i++) {
NSString *player = [players objectAtIndex:i];
if ([player isEqualToString:@"ADJUST_SCORE_ROW"]) {
removeIndex = [NSIndexPath indexPathForRow:i inSection:indexPath.section];
[players replaceObjectAtIndex:i withObject:@"DELETE_ME"];
break;
}
}
[scoreTableView beginUpdates];
NSIndexPath *insertPath;
if (removeIndex && [removeIndex row] < indexPath.row) {
insertPath = [NSIndexPath indexPathForRow:indexPath.row inSection:indexPath.section];
} else {
insertPath = [NSIndexPath indexPathForRow:indexPath.row + 1 inSection:indexPath.section];
}
[players insertObject:@"ADJUST_SCORE_ROW" atIndex:insertPath.row];
[scoreTableView insertRowsAtIndexPaths:[NSArray arrayWithObject:insertPath] withRowAnimation:UITableViewRowAnimationTop];
for (int i = 0; i < [players count]; i++) {
NSString *player = [players objectAtIndex:i];
if ([player isEqualToString:@"DELETE_ME"]) {
[players removeObject:player];
break;
}
}
if (removeIndex) {
[scoreTableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:removeIndex] withRowAnimation:UITableViewRowAnimationTop];
}
[scoreTableView endUpdates];
}
最佳答案
关键是删除和插入发生的地方。
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
Player *selectedPlayer = nil;
//Get rid of any adjustment score row
NSIndexPath *removeIndex;
for (int i = 0; i < [players count]; i++) {
id player = [players objectAtIndex:i];
if ([player isKindOfClass:[NSString class]] && [player isEqualToString:@"ADJUST_SCORE_ROW"]) {
if (i == indexPath.row) {
[scoreTableView selectRowAtIndexPath:indexPath animated:NO scrollPosition:UITableViewScrollPositionNone];
return; //This is the case where the row that was selected was an adjustment row
}
removeIndex = [NSIndexPath indexPathForRow:i inSection:indexPath.section];
[players replaceObjectAtIndex:i withObject:@"DELETE_ME"];
break;
}
}
selectedPlayer = [players objectAtIndex:indexPath.row];
[scoreTableView beginUpdates];
NSIndexPath *insertPath;
if (removeIndex && [removeIndex row] < indexPath.row) {
insertPath = [NSIndexPath indexPathForRow:indexPath.row inSection:indexPath.section];
} else {
insertPath = [NSIndexPath indexPathForRow:indexPath.row + 1 inSection:indexPath.section];
}
HoleScore *holeScore = [[round scoreForPlayer:[players objectAtIndex:indexPath.row] holeGroup:self.holeGroupIndex andHole:hole.holeIndex] objectForKey:CURRENT_HOLE_SCORE];
if (holeScore == nil) {
NSEntityDescription *scoreEntity = [NSEntityDescription entityForName:@"HoleScore" inManagedObjectContext:moc];
holeScore = [[HoleScore alloc] initWithEntity:scoreEntity insertIntoManagedObjectContext:moc];
[holeScore setPlayer:selectedPlayer];
[holeScore setHoleGroupIndex:[NSNumber numberWithInteger:holeGroupIndex]];
[holeScore setHoleIndex:[NSNumber numberWithInteger:hole.holeIndex]];
[holeScore setStrokes:[NSNumber numberWithInteger:[hole par]]];
[holeScore setPuts:[NSNumber numberWithInteger:2]];
HoleScoreCardTableViewCell *playerCell = (HoleScoreCardTableViewCell*)[scoreTableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:indexPath.row inSection:indexPath.section]];
[playerCell setHoleScore:holeScore];
[round addScoresObject:holeScore];
NSError *error;
[moc save:&error];
if (error) {
NSLog(@"Error saving: %@", error.localizedDescription);
}
}
for (int i = 0; i < [players count]; i++) {
id player = [players objectAtIndex:i];
if ([player isKindOfClass:[NSString class]] && [player isEqualToString:@"DELETE_ME"]) {
[players removeObject:player];
break;
}
}
if (removeIndex) {
[scoreTableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:removeIndex] withRowAnimation:UITableViewRowAnimationTop];
}
[players insertObject:@"ADJUST_SCORE_ROW" atIndex:insertPath.row];
[scoreTableView insertRowsAtIndexPaths:[NSArray arrayWithObject:insertPath] withRowAnimation:UITableViewRowAnimationTop];
[scoreTableView endUpdates];
}
关于iphone - 如何同时从 UITableView 插入和删除一行,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9098423/