UITextField with UIPickerView keyboard bug - objective-c

I just want to ask if how can I prevent keyboard popping out when it's pressing the UITextField? I have a UITextField and UIPickerView if I press the UITextField for the first time it's fine, it's showing the UIPickerView but then after i select in the UIPickerView then press the textfield again, instead of showing the UIPickerView again it shows the keyboard? I have this method on my UITextField when you click it it shows the UIPickerView:
- (IBAction)clickText:(id)sender
{
int tag = [(UITextField*)sender tag];
self.myPicker.hidden = NO;
selectedTable = tag;
[sender resignFirstResponder];
float yy = 10;
switch (tag) {
case 0: yy = self.txtLeasename.frame.origin.y + self.myPicker.frame.size.height;
break;
case 1: yy = self.txtFeet.frame.origin.y + self.myPicker.frame.size.height;
break;
case 2: yy = self.txtInches.frame.origin.y + self.myPicker.frame.size.height;
break;
default:
break;
}
}
How can i fix this kind of bug? Thank you very much!

Implement this Method and don't forget to assign the textfield.delegate to your controller
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
// Check if the given textfield is your textfield with the date picker.
if (textField.tag == 99) {
// Then add your picker to your view
UIDatePicker *pv = [[UIDatePicker alloc] initWithFrame:CGRectMakeZero];
[self.view addSubview:pv];
// And return NO
return NO; // Return NO prevents your Textfield from showing the Keyboard
}
return YES;
}
This should work for you:
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
int tag = textField.tag;
selectedTable = tag;
float yy = 10;
switch (tag) {
case 0:
self.myPicker.hidden = NO;
return NO;
case 1:
self.myPicker.hidden = NO;
return NO;
case 2:
self.myPicker.hidden = NO;
return NO;
default:
self.myPicker.hidden = YES;
return YES;
}
}

Are you looking for this?
UITextField Class Reference
inputView
The custom input view to display when the text field becomes the first responder.
#property(readwrite, retain) UIView *inputView
Discussion
If the value in this property is nil, the text field displays the standard system keyboard when it becomes first responder. Assigning a custom view to this property causes that view to be presented instead.
The default value of this property is nil.
Availability
Available in iOS 3.2 and later.
Declared In
UITextField.h
So just set the proper inputView for your UITextField in viewDidLoad or else where. Something like:
self.myTextField.inputView = self.myPicker

Related

Change UITextField background when editing begins for multiple fields

So I found this thread a while ago:
Change UITextField background when editing begins
The top answer is a fantastic resource for changing the background image of a textField when the user edits it. However, my issue is, how can you enable this with MULTIPLE text fields?
Specifically (for my app) I have a login and password field. Using the code I'll post below I can get my first text field to change images correctly when the user taps it. However, I cannot get the next field to follow suit when the user taps either the next text field or the "Next" option on the keyboard. As you can only have one instance of "textFieldShouldBeginEditing" as well as ending, you need to set the code for image change for both fields under the same section. however, when I do this, both my fields change when the first field is tapped, and both restore when the second is tapped.
Any ideas on this one excellent community?
Here's some code:
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
_userNameTextField.background = [UIImage imageNamed:#"login_field_highlighted#2x"];
return YES;
_passwordTextField.background = [UIImage imageNamed:#"password_field_highlighted#2x"];
return YES;
}
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
_userNameTextField.background = [UIImage imageNamed:#"login_field#2x"];
return YES;
_passwordTextField.background = [UIImage imageNamed:#"password_field#2x"];
return YES;
}
- (BOOL) textFieldShouldReturn:(UITextField *)textField {
NSLog(#"textFieldShouldReturn");
if (textField == _userNameTextField) {
[_passwordTextField becomeFirstResponder];
} else if (textField == _passwordTextField) {
[_passwordTextField resignFirstResponder];
}
return YES;
}
In each of those methods, you just need to check to see which textfield is targeted, just like you did in textFieldShouldReturn:
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
if (textField == _userNameTextField) {
_userNameTextField.background = [UIImage imageNamed:#"login_field#2x"];
} else if (textField == _passwordTextField) {
_passwordTextField.background = [UIImage imageNamed:#"password_field#2x];
}
return YES;
}

navigate through textfields

I'm trying to use the #PeyloW code that I found here How to navigate through textfields (Next / Done Buttons) but when I press the keyboard return button nothing happens. My tags are ok.
Header:
- (BOOL)textFieldShouldReturn:(UITextField*)textField;
Implementation:
- (BOOL)textFieldShouldReturn:(UITextField*)textField {
NSInteger nextTag = textField.tag + 1;
UIResponder* nextResponder = [textField.superview viewWithTag:nextTag];
if (nextResponder) {
[nextResponder becomeFirstResponder];
} else {
[textField resignFirstResponder];
}
return NO;
}
What am I missing? My keyboard doesn't have next done, only return. Keep in mind that I'm very new to iOS.
EDIT:
I tried to debug the code by adding a breakpoint to it and the code isn't being triggered.
I don't like solutions that incorporate the tag. Instead I would put all inputfileds in the desired order into an array and in -textFieldShouldReturn: use the given textfield to get it's index from in the array. Then I would get the object at that index.
- (BOOL)textFieldShouldReturn:(UITextField*)textField {
NSUInteger nextIndex = [arrayWithResponders indexOfObject:textField]+1 % [arrayWithResponders count];
UIResponder* nextResponder = [arrayWithTextFields objectAtIndex: nextIndex];
if (nextResponder) {
[nextResponder becomeFirstResponder];
} else {
[textField resignFirstResponder];
}
return NO;
}
You just added, that the breakpoints aren't triggered, so most likely you didn't set up the delegate.

hide or show tableview

Say I have a switch and a small table view(no scroll) below it. I know if the switch is turned on/off using a bool switchState whose value get changed in the action method of the switch:
-(IBAction)switchSlide:(id)sender{
if (toggleSwitch.on == YES) {
switchState = YES;
}
else{
switchState = NO;
}
}
Now what I want is that the table view below it should hide when the switchState == NO. How do I do that?
Every UIView has a property hidden:
#property(nonatomic, getter=isHidden) BOOL hidden
since a UITableView is a sublass of UIView you can use the methods from a UIView too.
So your code just need a little adjustment (assuming you are calling this IBAction in a UITableViewController):
-(IBAction)switchSlide:(id)sender{
if (toggleSwitch.on == YES) {
switchState = YES;
self.tableView.hidden = NO;
}
else{
switchState = NO;
self.tableView.hidden = YES;
}
}
Edit:
Solved this via chat and the solution is:
Since you used a UIViewController you have to make a propert for the UITableView. synthesize it and connect the outlet by dragging from the files owner to the UITableView in the interface builder. Now you can use the code above.

How do I get a UITextField to accept focus without showing the keyboard?

I am trying to find a way to prevent the keyboard from appearing when the user taps on a TextField but could`t find a way to do it.
I tried this code after I linked my textField to delegate and still it did not work for me, the code was logging but the keyboard did appear.
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
NSLog(#"BeginEditing");
return YES;
[textField resignFirstResponder];
}
When I return with NO I lose the focus from the textField, which I need.
The textFields I have are filled with values from a buttons on the same view, thats why I don't want the keyboard to appear, and at the same time I want the user to select the textField they want to fill.
if you just want user to select the textfield to fill and does not want to keyboard to show up then you can do the following:
add tag to your textfields
change the code to this:
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
selectedTextFieldTag = textField.tag;
return NO;
}
use selectedTextField value to identify which textfield to fill in your code. return NO will not allow keyboard to appear.
This will help you for sure.
-(BOOL)textFieldShouldBeginEditing:(UITextField*)textField {
UIView *dummyView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 1, 1)];
activeField.inputView = dummyView; // Hide keyboard, but show blinking cursor
return YES;
}
I tested and it is working for me. Hope this will be useful for others who have similar issue.
[textField resignFirstResponder]; will not be called because you are returning from the method before it can get called. Does that not fire a warning?
Try returning NO here or if that doesn't work, try disabling user-interaction on the text field:
[myTextField setUserInteractionEnabled:NO];
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
NSLog(#"BeginEditing");
[textField resignFirstResponder];
return YES;
}
so here you just use flag int variable to assign the value to focused textfield
define int i; flag globally in .h or .m file
after that in textField Delegate method use bellow code...
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
if (textField == yourtextField1 ) {
i=1;
}
else if (textField == yourtextField2 ) {
i=2;
}
else if (textField == yourtextField3 ) {
i=3;
}
else if (textField == yourtextField4 ) {
i=4;
}
return NO;
}
-(IBAction)yourbutton1_Clicked:(id)sender{
if( i == 1){
yourtextField1.text=yourbutton1.titleLabel.text;
}
else if ( i == 2){
yourtextField2.text=yourbutton1.titleLabel.text;
}
else if ( i == 3){
yourtextField3.text=yourbutton1.titleLabel.text;
}
else if ( i == 4){
yourtextField4.text=yourbutton1.titleLabel.text;
}
else{
NSLog(#"Please Click On TextField");//here you can put AlertView Message
}
}
and so on.......
also you can use common method with sender id of button and also tag......

disable button when textfields are empty

hi im a beginner to programming and have been stuck on this task for ages and seem to be getting nowhere.
basically i have several textfields that generates the input information on a different page when the user presses a button. i would like the button to be disabled until all text fields are filled with information.
so far i have this:
- (void)textFieldDidEndEditing:(UITextField *)textField
{
// make sure all fields are have something in them
if ((textfbookauthor.text.length > 0)&& (textfbookedition.text.length > 0)&& (textfbookplace.text.length > 0)&& (textfbookpublisher.text.length > 0) && (textfbookpublisher.text.length > 0) && (textfbooktitle.text.length > 0) && (textfbookyear.text.length > 0)) {
self.submitButton.enabled = YES;
}
else {
self.submitButton.enabled = NO;
}
}
the problem is the 'submitButton' is coming up with an error, what needs to go in its place?
i tried to put my button 'bookbutton'in it instead but its not working.
this is my function for the 'generate' button
-(IBAction)bookbutton:(id)sender;
{
NSString* combinedString = [NSString stringWithFormat:
#"%# %# %#.%#.%#:%#.",
textfbookauthor.text,
textfbookyear.text,
textfbooktitle.text,
textfbookedition.text,
textfbookplace.text,
textfbookpublisher.text];
BookGenerate*bookg = [[BookGenerate alloc] init];
bookg.message = combinedString;
bookg.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:bookg animated:YES];
[BookGenerate release];
}
if anybody knows how i can make it work or what i need to add please help.
thanks in advance
Make an Outlet for every UITextField and create an IBAction in your .h:
IBOutlet UITextField *textField1;
IBOutlet UITextField *textField2;
IBOutlet UITextField *textField3;
IBOutlet UIButton *button
- (IBAction)editingChanged;
Connect all the outlets and connect the IBAction to every textfield with editingChanged:
- (IBAction)editingChanged {
if ([textfield1.text length] != 0 && [textfield2.text length] != 0 && [textfield3.text length] != 0) {
[button setEnabled:YES];
}
else {
[button setEnabled:NO];
}
}
Note that you can also use [textfield.text isEqualToString:#""] and put a ! in front of it (!means 'not') to recognize the empty textField, and say 'if the textField is empty do...'
And:
- (void)viewDidLoad {
[super viewDidLoad];
[button setEnabled:NO];
}
If you have a button and you want to enable it only if there is a text in a textfield or textview, implement the follow method
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
if (textView.text.length > 1 || (text.length > 0 && ![text isEqualToString:#""]))
{
self.button.enabled = YES;
}
else
{
self.button.enabled = NO;
}
return YES;
}
Few solutions are available on these posts as well
Very Similar Query
A different version of it
Key here is using (extending) UITextFieldDelegate class and it's associated function
//Need to have the ViewController extend UITextFieldDelegate for using this feature
func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {
// Find out what the text field will be after adding the current edit
let text = (textField.text as NSString).stringByReplacingCharactersInRange(range, withString: string)
if !text.isEmpty{//Checking if the input field is not empty
button.userInteractionEnabled = true //Enabling the button
} else {
button.userInteractionEnabled = false //Disabling the button
}
// Return true so the text field will be changed
return true
}
You should use" textfield should change chracters in range" (see apple docs for uitextviewdelegate). because it updates as users type information." Textfield did end editing" only fires when the users finishes editing a textfield or hits enter. In most cases, someone will fill in the last field and leave the cursor sitting there and expect the button to become enabled...but that wont happen using "textfield did end editing" just because they entered input.
You can also do this to check the length
if([self.textfiele.text isEqualToString:#""])
In addition to having IBOutlets for each UITextField, it might be helpful to have an IBOutletCollection declared that contains all 3 text fields in an array.
#property (nonatomic, retain) IBOutletCollection(UITextField) NSArray *textFields;
Then in your implementation just #synthesize textFields and you can quickly loop the text fields it contains, checking for text.
- (IBAction)editingChanged
{
BOOL buttonShouldBeEnabled = YES;
for (UITextField *field in self.textFields)
if (!field.text.length)
buttonShouldBeEnabled = NO;
button.enabled = buttonShouldBeEnabled;
}