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iphoneuitextfieldnotnull

UITextField strange behaviour for blank checking

I've a UITextField say txtTitle. I want to check for not blank of that field at the time of inserting data into database.

For that I written

if(![txtTitle.text isEqualToString:@""])
{
   //Save
}

But where I am shocked is its not working! I did these type of checking before and its working properly. But not with this case. So that I checking it using following,

if(txtTitle.text!=NULL)
{
   //Save
}

It's working properly.

Now here I am confusing about this. I used to print NSLog(@"%@",txtTitle.text) without inputting anything into it. Its printed (null).

Someone please justify the difference between two IF conditions.

Thanks

Solution

  • Maybe you can check for the length property of the string instead, using 

    if([txtTitle.text length] > 0){
// Save
}

    I think the difference is between a completely uninitialized string and a string that has been initialized, but is simply empty.

    Hope this helps