Populate tableview with pickerview

Question

I have a button, a pickerview and a tableview. When I push the button, the current selection of pickerview will be filled in the table view. Here is the code of button which pick value from pickerview

- (IBAction)addCourse:(UIButton *)sender {

    NSInteger numRow=[picker selectedRowInComponent:kNumComponent];//0=1st,1=2nd,etc
    NSInteger SeaRow=[picker selectedRowInComponent:kSeaComponent];//0=fall,1=spring,2=summer
    NSInteger CourseRow=[picker selectedRowInComponent:kCourseComponent];

    NSString *num=Number[numRow];
    NSString *season=Season[SeaRow];
    NSString *course=Course[CourseRow];

    NSString *msgCourse=[[NSString alloc ]initWithFormat:@"%@ ",course];
    NSString *msgSeason=[[NSString alloc ]initWithFormat:@"%@ ",season];
    NSString *msgYear=[[NSString alloc ]initWithFormat:@"%@ ",num];

}

Then I want to populate msgCourse,etc to my tableview

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

 ...Content from above msgCourse and etc

    return cell;

}

How to fix the gap in my second part please? Or any example to look at please?

Answer 1

Check the following code to decide whether or not that fits into your requirements based on what I understand from your question. If it does not, please leave a comment then I will try my best to follow up.

First Step: if you have not done the delegation via storyboard, here is the first thing that you should do programatically:

  -(void)ViewDidLoad
  {  
    tableView.delegate = self;
    tableView.datasource = self;
   }

Second Step: I have not seen a mutablearray in your code, but I assume that you are going to make msgCourse to NSMutableArray.

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// I assume you have only one section
// Return the number of sections.
return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{

// Return the number of rows in the section.
 return [self.msgCourse  count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    UITableViewCell *cell = nil;
    cell = [tableView dequeueReusableCellWithIdentifier:@"Cell"];

    if(!cell){
      cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"Cell"];
        }

    cell.textLabel.text=[self.msgCourse objectAtIndex:indexPath.row];
    return cell;
}

Last Step: By the way, do not forget to add the following line of code into your button action to reload your tableView, I assume you update the NSMutableArray and would like to refresh the tableView.

- (IBAction)addCourse:(UIButton *)sender {
   .....
   .....
   .....
   [tableView reloadData];
}

Here is the good tutorial, it is worth to duplicate for the sake of learning: http://www.appcoda.com/ios-programming-tutorial-create-a-simple-table-view-app/