每次文本字段返回文本时，如何从UITextField加载文本并将其显示在UITableView中

Question

I am aware this question has been asked before but the answer is not clear

The problem is that the UITableview is using data from viewDidLoad method where the NSMuatableArray has been allocated and initialised but contains void. But in the textfield method of textFieldDidEndEditing , NSMutableArray do contain text from textField.

I have a single viewController and texField and tableview exist in it having dataSource set to the same viewController. The problem is how can I pass that value to UITableView

viewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController<UITableViewDataSource>

@property (weak, nonatomic) IBOutlet UITextField *TextField;
@property NSString *content;
@property (nonatomic, strong) NSMutableArray *textFieldArray;

@end

viewController.m

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController


-(BOOL)textFieldShouldReturn:(UITextField *) textField{
    self.content = [textField text];
    NSLog(@"content is %@", self.content);
    [textField resignFirstResponder];
    return YES;
}


-(bool)textFieldDidEndEditing:(UITextField *) textField {

    [self.textFieldArray addObject:self.content];
    [textField setText:@""];
    NSLog(@"Array inside field did end editing is %@", self.textFieldArray);
    return YES;
}



-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.textFieldArray.count;
}


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


    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];

    cell.textLabel.text = self.textFieldArray[indexPath.row];
    return cell;
}



- (void)viewDidLoad {
    [super viewDidLoad];
    self.textFieldArray = [[NSMutableArray alloc]initWithObjects:@"add more task", nil];




    NSLog(@"box in viewDidLoad ris %@", self.textFieldArray);

    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

Answer 1

In your textFieldDidEndEditing: method after fetching the text from textfield reload the table view so that the new value get reflected. Do it this way:

[self.textFieldArray addObject:self.content];
[textField setText:@""];

// Your code is missing the following line
[tableView reloadData]; // tableView is instance of your table view

NSLog(@"Array inside field did end editing is %@", self.textFieldArray);
return YES;

Answer 2

-(bool)textFieldDidEndEditing:(UITextField *) textField {

    [self.textFieldArray addObject:self.content];
    [textField setText:@""];
    [tableView reloadData]; //Reload tableview
    return YES;
}

Call tableview reload in textFieldDidEndEditing delegate

Answer 3

Vivek's Answer is perfectly fine, except that fact you don;t need to reload table unless it's really necessary (extra processing time and all you know), so instead of reloading entire table you can add just one row, like this:

- (void) textFieldDidEndEditing:(UITextField *)textField {
    [_tableDSArray addObject:textField.text];
    [self.tableView insertRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:tableDSArray.count-1 inSection:0]] withRowAnimation:UITableViewRowAnimationLeft];
}

Answer 4

    -(bool)textFieldDidEndEditing:(UITextField *) textField {
    [self.textFieldArray addObject:self.content];
    [textField setText:@""];
    [tableView setdelegate:nil];
    [tableView setdatasource:nil];
    [tableView setdelegate:self];
    [tableView setdatasource:self];
    [tableView reloadData];
    NSLog(@"Updated With Entered Text:\n%@",self.textFieldArray); 
    return YES;
    }