How can I use NSMutable Array as DataSource - ios

Question

Sorry I'm new to iOS. I intend to make an UITableView inside UIAlertView. Finally i have gotten this tutorial
I have implemented UIAlertTableView class this way
UIAlertTableView *alert = [[UIAlertTableView alloc] initWithTitle:#"Choose a number"
message:nil
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:nil, nil];
alert.tableDelegate = self;
alert.dataSource = self;
alert.tableHeight = 120;
[alert show];
However after testing, i got the UIAlert displayed a blank list, with no items appear inside. Previously i have an NSMUtableArray that i want to use as data source. From the tutorial above, seems that assigning data source is done using alert.dataSource = self. Yet i'm still wondering how to use my NSMutableArray as the data source and how it relates to alert.dataSource?

Answer 1

I'll suggest you need to create a new file as your alertView's table datasource and delegate.
Implement the:
#interface MyTableSource: UIViewController <UITableViewDataSource, UITableViewDelegate>
#end
#implementation MyTableSource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 7;
}
- (UITableViewCell *)tableView:(UITableView *)tableViews cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"MyIdentifier";
UITableViewCell *cell = [tableViews dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = #"M";
return cell;
}
#end
Create the alert like:
UIAlertTableView *alert = [[UIAlertTableView alloc] initWithTitle:#"Choose a number"
message:nil
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:nil, nil];
MyTableSource *data = [[MyTableSource alloc] init];
alert.tableDelegate = data;
alert.dataSource = data;
alert.tableHeight = 120;
[alert show];
Note:
I implemented that alertView for testing, there are alot of issues.
You need to call:
[self layoutAnimated:YES]; instead of [self setNeedsLayout]; in the alertView class.

Answer 2

You have told UIAlertView your class will be acting as its data source but you would also need to override at least the following UITableView data source methods, Here mutableArray refers to the mutable Array you want to use as data source:
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [mutableArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
}
// Set up the cell...
NSString *cellValue = [mutableArray objectAtIndex:indexPath.row];
cell.text = cellValue;
return cell;
}