ios - 未选择的 UITableView 行列表

Question

我有以下代码。

NSMutableArray *aList = [[NSMutableArray alloc] init];
for (NSIndexPath *indexPath in tableview1.indexPathsForSelectedRows) {
    NSString *r = [NSString stringWithFormat:@"%i",indexPath.row];
    [aList addObject:r];
}

所以我得到的是一个被选中的 UITableView 行的列表。有没有一种简单的方法可以获取列表 NOT 选中的行？

感谢您的帮助。

Answer 1

可能有优雅的解决方案，但这会起作用。

    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];

编辑:根据 Rikkles建议

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];
        }
    }
}