List of UITableView Rows That Are NOT Selected - ios

Question

I have the following code.
NSMutableArray *aList = [[NSMutableArray alloc] init];
for (NSIndexPath *indexPath in tableview1.indexPathsForSelectedRows) {
NSString *r = [NSString stringWithFormat:#"%i",indexPath.row];
[aList addObject:r];
}
So what I get is a list of UITableView rows that are selected. Is there a simple way of getting a list of rows that are NOT selected?
Thank you for your help.

Answer 1

There may be elegant solutions but this will work.
NSMutableArray *allIndexPaths = [#[]mutableCopy];
NSInteger nSections = [self.tableView numberOfSections];
for (int j=0; j<nSections; j++) {
NSInteger nRows = [self.tableView numberOfRowsInSection:j];
for (int i=0; i<nRows; i++) {
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:i inSection:j];
[allIndexPaths addObject:indexPath];
}
}
NSArray *selectedIndexPaths = self.tableView.indexPathsForSelectedRows;
for (NSIndexPath *indexPath in selectedIndexPaths) {
[allIndexPaths removeObject:indexPath];
}
NSArray *unselectedIndexPaths = [NSArray arrayWithArray:allIndexPaths];
EDIT : As per Rikkles suggestion
NSMutableArray *unselectedIndexPaths = [#[]mutableCopy];
NSArray *selectedIndexPaths = self.tableView.indexPathsForSelectedRows;
NSInteger nSections = [self.tableView numberOfSections];
for (int j=0; j<nSections; j++) {
NSInteger nRows = [self.tableView numberOfRowsInSection:j];
for (int i=0; i<nRows; i++) {
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:i inSection:j];
if (![selectedIndexPaths containsObject:indexPath]) {
[unselectedIndexPaths addObject:indexPath];
}
}
}

Answer 2

NSMutableArray *a = [NSMutableArray array]; // that's all unselected indexPaths
NSArray *l = [self.tableView indexPathsForSelectedRows];
NSIndexPath *idx;
for (NSUInteger sec=0; sec<[self.tableView numberOfSections]; sec++) {
for (NSUInteger r=0; r<[self.tableView numberOfRowsInSection:sec]; r++) {
idx = [NSIndexPath indexPathForRow:r inSection:sec];
if(![l containsObject:idx]){
[a addObject:idx];
}
}
}

Answer 3

You can use the numberOfRows return value minus the total selected rows.

Answer 4

I've added several additional lines to Anupdas' code. He certainly deserves the entire credit.
NSMutableArray *allIndexPaths = [#[]mutableCopy];
NSInteger nSections = [tableview1 numberOfSections];
for (int j=0; j < nSections; j++) {
NSInteger nRows = [tableview1 numberOfRowsInSection:j];
for (int i=0; i<nRows; i++) {
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:i inSection:j];
[allIndexPaths addObject:indexPath];
}
}
NSArray *selectedIndexPaths = tableview1.indexPathsForSelectedRows;
for (NSIndexPath *indexPath in selectedIndexPaths) {
[allIndexPaths removeObject:indexPath];
}
NSMutableArray *bList = [[NSMutableArray alloc] init];
for (NSInteger k = 0; k < allIndexPaths.count; k++) {
NSString *r = [NSString stringWithFormat:#"%i",[[allIndexPaths objectAtIndex:k] row]];
[bList addObject:r];
}

Answer 5

NSMutableArray * yourNewArr = [[NSMutableArray alloc ] init];
for(NSUInteger i = 0 ; i < [yourArr count] ; i++){
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:i inSection:0];
NSArray *selIndexs = self.tableView.indexPathsForSelectedRows;
if(![selIndexs containsObject:indexPath]){
[yourNewArr addObject:indexPath];
}
}
NSLog(#"%#", yourNewArr); // this will contain unselected index paths.