In my iphone app, I have created some UITextField in scrollView dynamically. And added one button in xib. On that button's TouchUpInside event, I opened UIImagePickercontroller to open photo library and taking selected image on UIImageView.
Now when modalview is dissmissed, values in my UITextField disappears.
How do I retain the UITextField values?
txt = [[UITextField alloc] initWithFrame:CGRectMake(10.0f, 30.0f, 200.0f, 30.0f)];
[txt addTarget:self action:#selector(keyDown:)forControlEvents:UIControlEventEditingDidEndOnExit];
txt.textColor = [UIColor blackColor];
txt.borderStyle = UITextBorderStyleBezel;
txt.autocorrectionType = UITextAutocorrectionTypeNo;
[fieldArray addObject:txt];
Using for loop I am adding txt to NSMutableArray fieldArray.
Here is the code where I fetch values from TextFields
NSMutableArray *insertValues = [[NSMutableArray alloc]init];
//Taking values from textFields
for (int i=1; i<=nooffields; i++) {
UITextField *tf = (UITextField *)[self.view viewWithTag:i];
NSLog(#"TF : %#",tf.text);
if (tf.text.length<=0) {
tf.text=#"";
}
[insertValues addObject:[NSString stringWithFormat:#"'%#'",tf.text]];
}
EDIT :
And also when I display values from database in this textFields and try to edit it. It gives me null values.
What may be the reason? If there any other alternatives? please help me
UITextField *textField=[[UITextField alloc]init];
[textField setFrame:CGRectMake(x,y, width, hight)];
[textField setBorderStyle:UITextBorderStyleRoundedRect];
[self.view addSubview:textField];
The information that your scrollview uses to get populated should be stored outside the scrollview, in a NSMutableDictionary for example. So everytime cellForRowAtIndexPath gets called it can retrieve the information from that source. So I advise you to store the UITextField's text within the dictionary. You can index it by its tag number. That way you won't loose whatever it contained.
I hope it helps you
Cheers
I finally got a work around for my problem.
I am temporarily storing my textField's values into database when presentModalViewController is called.
These values I retrieve back into the textFields on viewWillAppear.
This may not be a very efficient solution but it worked in my case.
Hope this helps someone.
Thanks for all your responses.
Related
I would like to create a new uitextview every time when the user click on the same uibutton.
I've tried to write some codes but I can create one uitextview only.
Would be glad if there's some sample code that can be provided to help me out.
Thanks in advance.
UITextView *newTextView =[[UITextView alloc]init];
newTextView.frame=CGRectMake(0,0,100,100);
[textView addSubview:newTextView];
newTextView.delegate=self;
[newTextView release];
In case of your code will create the new textView as you required but it will overlap the last one so you can see that new . you need to create int y variable increase the value everytime then will change the y codinate of your textView.
-(IBAction)addTView:(id)sender {
UITextView *newTextView =[[UITextView alloc]init];
newTextView.frame=CGRectMake(0,y,100,100);
[textView addSubview:newTextView];
newTextView.delegate=self;
[newTextView release];
y = y + 100;
}
then add it On your View where you want to add using [self.view addSubView: yourView]
-(IBAction)textviewadd:(id)sender {
UITextView *View =[[UITextView alloc]init];
newTextView.frame=CGRectMake(0,y,100,100);
[self.view addSubview:txtView];
txtView.delegate=self;
[txtView release];
y = y + 150;
}
i hope this code useful for you.
How can I read UITextField value in an IBAction? I'm creating UITextField programmatically. So I can't set #property and #synthesize using Xcode. The code to generate UITextField is as follows:
for(i=0; i<[fieldName count]; i++)
{
UITextField *name = [fieldName objectAtIndex:i];
frame = CGRectMake(fromLeft, fromTop, totalWidth, totalHeight);
name = [[[UITextField alloc] initWithFrame:frame] autorelease];
name.borderStyle = UITextBorderStyleRoundedRect;
name.returnKeyType = UIReturnKeyDone;
//name.placeholder = [fieldName objectAtIndex:i];
name.autocapitalizationType = UITextAutocapitalizationTypeWords;
name.adjustsFontSizeToFitWidth = TRUE;
name.keyboardType = UIKeyboardTypeDefault;
[name addTarget:self action:#selector(doneEditing:) forControlEvents:UIControlEventEditingDidEndOnExit];
[scroller addSubview:name];
fromTop = fromTop + 40;
}
Now I want to read values of each textbox in a button click (IBAction). Can anyone help me please?
You could use something like this to loop through all UITextFields that are subviews of self.view and add their text to a NSMutableArray:
for (UITextField *field in self.view.subviews) {
if ([field isKindOfClass:[UITextField class]]) {
if ([[field text] length] > 0) {
[someMutableArray addObject:field.text];
}
}
}
if your doneEditing: looks like this doneEditing:(id)sender then you can say:
UITextField *field = (UITextField *)sender;
NSString *myText = field.text;
EDIT:
To access a UITextField without setting as an instance variable you need to tag it when you create it:
[textField setTag:1];
then whenever you want to access it you can get it from its parent view by the tag:
UITextField *myTextField = [scroller viewWithTag:1];
NSString *myString = myTextField.text;
in your case, set the tag to i+1 for example to have all the textfield with unique tags.
implement the IBAction function like the following:
-(IBAction) doneEditing:(UITextField*)sender
{
NSString * val = sender.text;
}
try using the UITextFieldDelegate , i think its better for your case.
add each UITextField a Tag and by that you will recognise the UITextField.
NSString *value = sender.text;
If inside an IBAction, of course.
Which ignores that there is a set of text fields, and a single button action.
The simplest solution to the overall problem would be to store a set (or array) of text fields in an instance variable, and iterate over that set in the button action. But that is a rather coarse approach; it is probably better to use the text field delegate method and store text values directly in an array, using the button to trigger the save.
In addition, Apple HIG would tell you that you should update your data model as the text fields are edited, rather than use a "Save" button - which is poor UX design - unless, of course, the values of individual fields can interact.
I am currently create a UITableViewCell with a UITextField in it.
On click of the text field, I want to bring up a number keyboard that I created. And as I type, the textfield should check the input for me; on click of other place, the keypad should be dismissed.
Code:
UITableViewCell *sizeCell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:#"sizeCell"];
sizeCell.textLabel.text = #"Size";
UITextField* sizeField = [[UITextField alloc] initWithFrame:CGRectMake(185, 10, 100, 28)];
sizeField.text = #"0";
sizeField.textAlignment = UITextAlignmentRight;
sizeField.textColor = [UIColor colorWithRed:50.0/255.0 green:79.0/255.0 blue:133.0/255.0 alpha:1.0f];
sizeField.backgroundColor = [UIColor clearColor];
sizeField.keyboardType = UIKeyboardTypeDecimalPad;
[sizeCell.contentView addSubview:sizeField];
rows = [[NSArray arrayWithObjects:switchCell, typeCell, sizeCell, nil] retain];
I tried to implement UITextFieldDelegate like:
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
[sizeField resignFirstResponder];
return YES;
}
but the keyboard doesn't go away...
How do I validate the input and dismiss the keyboard?
You never set the delegate on your textfield so that textFieldShouldReturn: gets called. Make sure your class conforms to UITextFieldDelegate and then do the following:
...
UITextField* sizeField = [[UITextField alloc] initWithFrame:CGRectMake(185, 10, 100, 28)];
sizeField.delegate = self; //This is important!
sizeField.text = #"0";
...
A few observations:
As another poster suggested, make sure you set the keyboard's delegate correctly.
If you want to dismiss the keyboard on keyboard return, make sure you have one on your custom keyboard and it's correctly set up to call the ...ShouldReturn method.
If you want to dismiss on taps outside, you'll have to do that on your own.
You are declaring sizeField inside the method where you are setting it up, then calling it from another method outside that scope. I assume you have a class variable called sizeField or you'd be getting a compiler error. However, declaring it again when you're setting it up like you do shadows the class variable declaration so it never gets set up. Incidentally, that's a memory leak.
This shouldn't affect the actual running of the program if all else is correct (but it will if, e.g. 4 is the problem and not fixed), but I think it's better form to call [textField resign...] instead of [sizeField resign...]. At the least you should assert(textField == sizeField).
I ran into difficulties with SSCollectionView and SSCollectionViewItem.
First of all I'd like to get it initialized from IB. But that won't work for me.
I have a SelectFooViewController which is:
#interface SelectFooViewController : SSCollectionViewController { ... }
and am using it as filesOwner of the corresponding XIB.
SelectFooViewController* selectFooVC = [[SelectFooViewController alloc]
initWithNibName:#"SelectFooViewController" bundle:nil];
But since it wont work I had to initialize its properties inside viewDidLoad() myself.
Furthermore I am not able to display anything except the backgroundColor of my SSCollectionViewItems. What I want is a textLabel and an image .
- (SSCollectionViewItem *)collectionView:(SSCollectionView *)aCollectionView itemForIndexPath:(NSIndexPath *)indexPath {
SSCollectionViewItem *item = [[[SSCollectionViewItem alloc] initWithStyle:SSCollectionViewItemStyleImage reuseIdentifier:itemIdentifier] autorelease];
SSLabel* label = [[SSLabel alloc] init];
[label setText:#"foo"];
item.imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"foo.png"]];
item.textLabel = label;
[label autorelease];
return item;
}
I can confirm that the delegate methods (for determining the number Of rows, sections and such) are implemented and working as expected. But my items are all empty - but react onclick with the expected popup.
Does anyone see an error in what I did? - Thanks...
EDIT: I was also not able to display a local image by changing SSCatalog project
I just figured out, that I have to set the frame of each property (textLabel, detailTextLabel and imageView) myself. That fixed it.
When you create instance SelectFooViewController just insert this line
selectFooVC.view;
or
selectFooVC.view.hidden = NO;
And then add it to the view.
This is because the view is not initalised until you explicitly access it. Hence your items are loaded only when you click it and not immediately. You can call it a hack but i don't call it one. :-)
I'm currently working on an app where a user has to edit his/her profile. I would like to use the edit mode like in the contacts app. (Labels become Textfields)
Is there an easy way to achieve this? Or do I have to replace the cell.detailTextLabel.text with a uitextfield by myself?
Example contacts app editing view:
http://content.screencast.com/users/EricMulder/folders/Jing/media/0839c0c9-43df-4283-bcf1-65f49b43696f/00000047.png
For anyone interested, here is some sample code to add an UITextField to your cell:
cell.textLabel.text = NSLocalizedString(#"nameLabel", #"");
//add textField
if(![cell viewWithTag:101]) {
UITextField *aliasField = [[UITextField alloc] initWithFrame:CGRectMake(93, 13, 225, 44)];
aliasField.text = #"Eric Mulder";
aliasField.font = [UIFont boldSystemFontOfSize:15.0f];
aliasField.tag = 101;
[cell addSubview:aliasField];
}
cell.detailTextLabel.text = nil;
ejazz,
Why do you suppose that they are labels? ; )
You can draw custom cell with UITextField in interface builder. Load it from xib. And change textfields editable property in your implementation of setEditing:animated: method of your view controller.