选择其他uitable行的行时如何重新加载uitable

Question

I'm trying to reload a UITableView when the row of a different UITableView's row is selected. One of the problems I'm having is that both the UITableView's are in the same view. I would like a selection in Table1 to change the NSMutableArray that's used to populate Table2. And then reload the table.

At the moment it works fine, but only when the app re-lauches (or the view is popped off the stack and then re-visited) and viewWillAppear is called again

Here's my code:

- (void) viewWillAppear:(BOOL)animated {
    [super viewWillAppear:NO];
    [self.navigationController setNavigationBarHidden:YES animated:NO];
    self.navigationController.toolbarHidden = YES;
    NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];

    // getting an NSString
    selectedTableString = [prefs stringForKey:@"selectedTableString"];
    if ([selectedTableString isEqualToString:@"Italy"]) {
        jsonStringCountry = @"http://****/v1/public/cities?country=it";
    }
    else if ([selectedTableString isEqualToString:@"Spain"]) {
        jsonStringCountry = @"http://****/v1/public/cities?country=es";
    }
    else if ([selectedTableString isEqualToString:@"UK"]) {
        jsonStringCountry = @"http://****/v1/public/cities?country=uk";
    }
    else if ([selectedTableString isEqualToString:@"Brazil"]) {
        jsonStringCountry = @"http://****/v1/public/cities?country=br";
    }
    NSLog(@"from two t selectedTableString %@",selectedTableString);

    // Download the yoodeal JSON
    NSString *jsonString = [NSString stringWithContentsOfURL:[NSURL URLWithString:jsonStringCountry] encoding:NSStringEncodingConversionAllowLossy|NSUTF8StringEncoding error:nil];
    NSLog(@"jsonStringCountry is %@", jsonStringCountry);
    NSMutableArray *itemsTMP = [[NSMutableArray alloc] init];

    // Create parser for the yoodeal api
    SBJSON *parser = [[SBJSON alloc] init];
    NSDictionary *results = [parser objectWithString:jsonString error:nil];
    itemsTMP = [results objectForKey:@"results"];
    self.displayItems = [itemsTMP copy];
}

My UITableView methods:

- (int)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}
- (int)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [displayItems count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"MainCell"];
    if(cell == nil){
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"MainCell"];
    }

    // Get item from tableData
    NSDictionary *item = (NSDictionary *)[displayItems objectAtIndex:indexPath.row];
    cell.textLabel.text = [item objectForKey:@"name"];
    [cell.textLabel setFont:[UIFont fontWithName: @"Asap-Bold" size: 14.0f]];
    return cell;
}

Answer 1

为表格视图创建出口

 [self.yourTableView reloadData];

Answer 2

Use [tablename reloadData]; onclick.

When you are updating tableview contents, it will not refresh the view. You can only see changes once the view controller is reloaded. For updating the table instantly you need to call the above code

Answer 3

您应该创建UITableView的属性secondTableView ，然后使用[secondTableView reloadData] 。

Answer 4

You'll need to use the delegate method of UITablveView . The method is:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

This methods gets called when you click on the row of UITableView . Use this in following manner:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
   if(tableView == Table1)
   {
        //do the changes in array you want to do.
        [table2 reloadData];
   }
   else
   {
        //do the changes in array you want to do.
        [table1 reloadData];
   }
}