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PONeed to create a select all button for UITableView and add selections to an array in iOS
 

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  1. PONeed to create a select all button for UITableView and add selections to an array in iOS
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    <p>I have a UITableViewController that shows a list of items from NSMutableArray, along with a button that serves as a check box that the user can select/deselect. I am able to successfully display the table, as well as the checkboxes. However, I would like to have a tableheader at the very top of the table that would have a "select all" check box, which would allow the user to select all of the cells, or deselect all of the cells. If some cells are already checked off, then I want only those cells that are not selected, to be selected. </p> <p>Here is the code that I have thus far:</p> <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; cell.selectionStyle = UITableViewCellSelectionStyleNone; testButton = [UIButton buttonWithType:UIButtonTypeCustom]; [testButton setFrame:CGRectMake(280, 57, 25, 25)]; [testButton setImage:[UIImage imageNamed:@"CheckBox1.png"] forState:UIControlStateSelected]; [testButton setImage:[UIImage imageNamed:@"CheckBox2.png"] forState:UIControlStateNormal]; [testButton setUserInteractionEnabled:YES]; [testButton addTarget:self action:@selector(buttonTouched:) forControlEvents:UIControlEventTouchUpInside]; [cell setAccessoryView:testButton]; } // Configure the cell... TestObject *tObject = [[DataModel sharedInstance].testList objectAtIndex:indexPath.row]; cell.textLabel.text = tObject.testTitle; return cell; } -(void)buttonTouched:(id)sender { UIButton *btn = (UIButton *)sender; if( [[btn imageForState:UIControlStateNormal] isEqual:[UIImage imageNamed:@"CheckBox1.png"]]) { [btn setImage:[UIImage imageNamed:@"CheckBox2.png"] forState:UIControlStateNormal]; // other statements } else { [btn setImage:[UIImage imageNamed:@"CheckBox1.png"] forState:UIControlStateNormal]; // other statements } } //Here is the additional method that I have added to my code to select all -(void)clickOnCheckButton { NSLog(@"Did it select?"); for (int i = 0; i &lt; [self.tableView numberOfSections]; i++) { for (int j = 0; j &lt; [self.tableView numberOfRowsInSection:i]; j++) { NSUInteger ints[2] = {i,j}; NSIndexPath *indexPath = [NSIndexPath indexPathWithIndexes:ints length:2]; UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath]; //Here is your code [self buttonTouched:nil]; } } } </code></pre> <p>Does anyone have any suggestions on how to do this?</p> <p>Thanks in advance to all who reply.</p>
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    1. COwhere you are facing problem. In adding checkbox in header OR in select deselect all checkbox?
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    2. COBoth. How would I add a header that allows me to add "select all" button which allows me to select/deselect my selections from the table? I have seen tutorials that show you how to add headers, but how do I add a header that includes a button that functions as described above?
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