Displaying text in UILabel in iPhone

OK. What's wrong with my code?

- (void)viewDidLoad {
    [super viewDidLoad];

    lblResult = [UILabel alloc];
}

- (void)viewWillAppear:(BOOL)animated {
 lblResult.text = @"BlahBlah";
}

I linked lblResult to Label object in IB well. But the label only shows the default text. Where's my BlahBlah??

And when the default string I set in the IB actually set to lblResult??

The reason that BlahBlah string is not d开发者_StackOverflowisplyed is I guess because lblResult.text is over-written by default string specified from IB. Just my guess.

Can anyone make me clear with that?

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If you have already made all of the correct connections from your IBOutlets to Interface Builder, they will be automatically initialized for you. You shouldn't be re-initializing the object at all. (As a side point, you weren't fully initializing it).

So get rid of the initialization code in -viewDidLoad and it should work.

- (void)viewWillAppear:(BOOL)animated {
  lblResult.text = @"BlahBlah";
}

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try adding the frame to your label

Example 1

lblResult = [[UILabel alloc] initWithFrame:CGRectMake(75, 10, 180, 20)];

Example 2

lblResult = [[UILabel alloc] init]; lblResult.frame = CGRectMake(75, 10, 180, 20);

or Adding color

lblResult = [[UILabel alloc] initWithFrame:CGRectMake(75, 10, 180, 20)];

lblResult.backgroundColor =[UIColor redColor];

lblResult.textColor = [UIColor whiteColor];

lblResult.text = @"BlahBlah";