I've add a scrollView in the view controller and register keyboard show and hidden notifications
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationController.navigationBar.translucent = NO;
[self registerForKeyboardNotifications];
// add UITapGestureRecognizer
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]
initWithTarget:self
action:#selector(dismissKeyboard)];
[scrollView addGestureRecognizer:tap];
scrollView.delegate = self;
[self setupAView];
}
- (void)setupAView {
// setting up aView...
scrollView.contentSize = CGSizeMake(self.view.frame.size.width, aView.frame.size.height);
-(void)dismissKeyboard {
[aView.aTextView resignFirstResponder];
}
- (void)registerForKeyboardNotifications
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWasShown:)
name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillBeHidden:)
name:UIKeyboardWillHideNotification object:nil];
}
- (void)keyboardWasShown:(NSNotification*)aNotification
{
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, aView.frame.size.height, 0.0);
scrollView.contentInset = contentInsets;
scrollView.scrollIndicatorInsets = contentInsets;
CGPoint aPoint = CGPointMake(0, aView.frame.size.height);
[scrollView setContentOffset:aPoint animated:NO];
}
- (void)keyboardWillBeHidden:(NSNotification*)aNotification
{
// scrollView insets
UIEdgeInsets contentInsets = UIEdgeInsetsZero;
scrollView.contentInset = contentInsets;
scrollView.scrollIndicatorInsets = contentInsets;
}
this works fine, when I tap aTextView and aView in scrollView will move above keyboard view, but meanwhile if I scrolled the scrollView, whole view will automatically drop down a bit, How come the action will change the insets value or the scrollView contentSize value?
Related
I am working with fully auto-layout.
Last UITextField (end of the view before done button): I set setContentOffset in textFieldDidBeginEditing, it works fine but when I try to scroll (at keyboard shown), UIScrollView is back to normal.
Then text field back to keyboard. Here my code at textFieldDidBeginEditing.
I am using bskeyboardcontroller for next and previous and done button.
[self.scrollviewDetail setContentOffset:CGPointMake(0, 500) animated:YES];
Problem is your Scroll view height on KeyBoard appearance in View, simply you change scroll insects or frame to avoid this problem, if scroll view content offset greater than (content size - scroll view frame size) while scroll it will reset automatically in Scroll view.
Try this code :
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardDidShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardDidHide:) name:UIKeyboardWillHideNotification object:nil];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)keyboardDidShow:(NSNotification *)notification {
CGRect keyboardRect = [notification.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
keyboardRect = [self.view convertRect:keyboardRect fromView:nil];
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, keyboardRect.size.height, 0.0);
scrollView.contentInset = contentInsets;
scrollView.scrollIndicatorInsets = contentInsets;
CGRect aRect = self.view.frame;
aRect.size.height -= keyboardRect.size.height;
if (!CGRectContainsPoint(aRect, currentTextField.frame.origin) ) {
[scrollView scrollRectToVisible:currentTextField.frame animated:NO];
}
}
- (void)keyboardDidHide:(NSNotification *)notification
{
UIEdgeInsets contentInsets = UIEdgeInsetsZero;
scrollView.contentInset = contentInsets;
scrollView.scrollIndicatorInsets = contentInsets;
}
I am very junior mobile programmer .I need to move up text views when keyboard appears.I follows this move-uiview-up-when-the-keyboard-appears-in-ios and it works well but I have a background image and I do not want to move up background image .so all textboxes are embed in UIView named as customView.I tried to move up customView instead of self.view .When I start enter in first textview, the customView moves up.But when I move to second textview,customview moves down to original position and textView become under the keyboard.customView need to stay move up the when i start enter in second textview .I really appreciate any help!.
#property (strong, nonatomic) IBOutlet UIView *customView;
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
return YES; }
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField {
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardDidHide:) name:UIKeyboardDidHideNotification object:nil];
[self.view endEditing:YES];
return YES; }
- (void)keyboardDidShow:(NSNotification *)notification
{
//Assign new frame to your view
[self.customView setFrame:CGRectMake(0,50,320,460)];
}
-(void)keyboardDidHide:(NSNotification *)notification
{
[self.customView setFrame:CGRectMake(0,193,320,460)];
}
Add the observer in viewDidLoad for best approach.
- (void)viewDidLoad {
[super viewDidLoad];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardWillShow:) name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardWillBeHidden:) name:UIKeyboardWillHideNotification object:nil];
}
- (void)keyboardWillShow:(NSNotification*)aNotification {
[UIView animateWithDuration:0.25 animations:^
{
CGRect newFrame = [customView frame];
newFrame.origin.y -= 50; // tweak here to adjust the moving position
[customView setFrame:newFrame];
}completion:^(BOOL finished)
{
}];
}
- (void)keyboardWillBeHidden:(NSNotification*)aNotification {
[UIView animateWithDuration:0.25 animations:^
{
CGRect newFrame = [customView frame];
newFrame.origin.y += 50; // tweak here to adjust the moving position
[customView setFrame:newFrame];
}completion:^(BOOL finished)
{
}];
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
[self.view endEditing:YES];
}
// Add a scrollview on main view and add UITextField on that scrollview
-(void) viewDidLoad
{
UIScrollView *myScrollView = [[UIScrollView alloc] initWithFrame:[UIScreen mainScreen].bounds];
myScrollView.contentSize = CGSizeMake(320, 500);
myScrollView.contentInset = UIEdgeInsetsMake(0, 0, 60, 0);
[self.view addSubview:myScrollView];
UITextField *myTextField = [[UITextField alloc] initWithFrame:CGRectMake(20,30,100,33)];
[myScrollView addSubview:myTextField];
myTextField.delegate = self;
}
// Set the scrollview content offset to make the myTextField move up
- (void) textFieldDidBeginEditing:(UITextField *)textField
{
[myScrollView setContentOffset:CGPointMake(0,textField.center.y-80) animated:YES];
// here '80' can be any number which decide the height that textfiled should move
}
//To move the textfield to its original position
- (BOOL) textFieldShouldReturn:(UITextField *)textField
{
[[myScrollView setContentOffset:CGPointMake(0,0) animated:YES];
[textField resignFirstResponder];
return YES;
}
Make your class implement the UITextFieldDelegate.
Put the following code in viewDidLoad.
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardWasShown:) name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardWillBeHidden:) name:UIKeyboardWillHideNotification object:nil];
And define the following functions in your .m file.
- (void)keyboardWasShown:(NSNotification *)aNotification
{// scroll to the text view
NSDictionary* info = [aNotification userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0);
self.scrollView.contentInset = contentInsets;
self.scrollView.scrollIndicatorInsets = contentInsets;
// If active text field is hidden by keyboard, scroll it so it's visible.
// Your app might not need or want this behavior.
CGRect aRect = self.view.frame;
aRect.size.height -= kbSize.height;
self.scrollView.scrollEnabled = YES;
if (!CGRectContainsPoint(aRect, activeField.frame.origin) ) {
[self.scrollView scrollRectToVisible:activeField.frame animated:YES];
}
}
- (void)keyboardWillBeHidden:(NSNotification *)aNotification
{
// scroll back..
UIEdgeInsets contentInsets = UIEdgeInsetsZero;
self.scrollView.contentInset = contentInsets;
self.scrollView.scrollIndicatorInsets = contentInsets;
self.scrollView.scrollEnabled = NO;
}
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
activeField = textField;
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
activeField = nil;
}
Hi I'm getting the error:
Property 'editingIndexPath' not found on object of type 'ViewController *' with the line:
[self.tableView scrollToRowAtIndexPath:self.editingIndexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
The error has something to do with this call: self.editingIndexPath
How would I fix this error?
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillHide:)
name:UIKeyboardWillHideNotification
object:nil];
}
- (void)keyboardWillShow:(NSNotification *)notification
{
CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
UIEdgeInsets contentInsets;
if (UIInterfaceOrientationIsPortrait([[UIApplication sharedApplication] statusBarOrientation])) {
contentInsets = UIEdgeInsetsMake(0.0, 0.0, (keyboardSize.height), 0.0);
} else {
contentInsets = UIEdgeInsetsMake(0.0, 0.0, (keyboardSize.width), 0.0);
}
self.tableView.contentInset = contentInsets;
self.tableView.scrollIndicatorInsets = contentInsets;
[self.tableView scrollToRowAtIndexPath:self.editingIndexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
- (void)keyboardWillHide:(NSNotification *)notification
{
self.tableView.contentInset = UIEdgeInsetsZero;
self.tableView.scrollIndicatorInsets = UIEdgeInsetsZero;
}
Compiler tells you everything. Just define a editingIndexPath property.
#property(nonatomic, strong) NSIndexPath *editingIndexPath
I have a UITextField embedded in a UIScrollView, and I want the text field to scroll up to be visible when the keyboard is active. I tried the top answer in How to make a UITextField move up when keyboard is present? but it seems that it does not work with auto-layout, so instead I took the code from the apple docs. This almost works, but its not scrolling the view until the user actually enters some data, rather than when the keyboard actually appears.
Here's what I'm doing - is there something obviously wrong?
// Call this method somewhere in your view controller setup code.
- (void)registerForKeyboardNotifications
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillBeHidden:)
name:UIKeyboardWillHideNotification object:nil];
}
// Called when the UIKeyboardDidShowNotification is sent.
- (void)keyboardWillShow:(NSNotification*)aNotification
{
NSDictionary* info = [aNotification userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0);
self.scrollView.contentInset = contentInsets;
self.scrollView.scrollIndicatorInsets = contentInsets;
// If active text field is hidden by keyboard, scroll it so it's visible
// Your application might not need or want this behavior.
CGRect aRect = self.view.frame;
aRect.size.height -= kbSize.height;
if (!CGRectContainsPoint(aRect, self.activeField.frame.origin) ) {
[self.scrollView scrollRectToVisible:self.activeField.frame animated:YES];
}
}
// Called when the UIKeyboardWillHideNotification is sent
- (void)keyboardWillBeHidden:(NSNotification*)aNotification
{
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3];
UIEdgeInsets contentInsets = UIEdgeInsetsZero;
self.scrollView.contentInset = contentInsets;
self.scrollView.scrollIndicatorInsets = contentInsets;
[UIView commitAnimations];
}
- (void)textFieldDidBeginEditing:(UITextField *)textField {
NSLog(#"textFieldDidEndEditing");
self.activeField = textField;
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
NSLog(#"textFieldDidEndEditing");
self.activeField = nil;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self registerForKeyboardNotifications];
}
Try this,
ViewController.h
bool keyboardIsShown;
UITapGestureRecognizer *tapGesture;
ViewController.m
- (void)viewDidLoad
{
[super viewDidLoad];
tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(dismissKeyboard)];
tapGesture.cancelsTouchesInView = NO;
[self.view addGestureRecognizer:tapGesture];
scrollView.contentSize =CGSizeMake(0, self.view.frame.size.height+50);
// register for keyboard notifications
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:self.view.window];
// register for keyboard notifications
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillHide:)
name:UIKeyboardWillHideNotification
object:self.view.window];
keyboardIsShown = NO;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
// unregister for keyboard notifications while not visible.
[[NSNotificationCenter defaultCenter] removeObserver:self
name:UIKeyboardWillShowNotification
object:nil];
// unregister for keyboard notifications while not visible.
[[NSNotificationCenter defaultCenter] removeObserver:self
name:UIKeyboardWillHideNotification
object:nil];
}
///// KEYBOARD
- (void) moveView:(float) yPos
{
[scrollView setContentOffset:CGPointMake(0, yPos) animated:YES];
}
- (void)keyboardWillHide:(NSNotification *)n
{
keyboardIsShown = NO;
[self.view removeGestureRecognizer:tapGesture];
[self moveView:0.0];
}
- (void)keyboardWillShow:(NSNotification *)n
{
if (keyboardIsShown)
{
return;
}
keyboardIsShown = YES;
[self.view addGestureRecognizer:tapGesture];
[self moveView:255.0];
}
// method to hide keyboard when user taps on a scrollview
-(void)dismissKeyboard
{
[self.view endEditing:YES];
}
Try the code below:
-(void)keyboardWillShow:(id)sender
{
if ([orientation==#"Landscape"])
[loginScrollView setContentSize:CGSizeMake(480, 620)];
else
[loginScrollView setContentSize:CGSizeMake(320, 670)];
}
and while editing the text use this
- (void)textFieldDidBeginEditing:(UITextField *)textField {
if ([orientation == #"Landscape"]) {
if (textField == usernameTextField)
[loginScrollView setContentOffset:CGPointMake(xValue, 200) animated:YES];
if (textField == passwordTextField)
[loginScrollView setContentOffset:CGPointMake(xValue, 220) animated:YES];
}
else{
if (textField == usernameTextField)
[loginScrollView setContentOffset:CGPointMake(xValue, 168) animated:YES];
if (textField == passwordTextField)
[loginScrollView setContentOffset:CGPointMake(xValue, 172) animated:YES];
}
}
I am using UITableView, where each cell contains a UITextField, and using Apple official example, I wish to perform goal, moving the active field above the keyboard if it's already hidden. However, the form doesn't move although the UITableView is scroll eabled. Here is my relevant code, please help me pointing on what seems to be missing/wrong:
#interface ViewController (){
UITextField *activeField;
}
- (void)viewDidLoad
{
//....
objTableView.scrollEnabled=YES;
//....
}
#pragma mark - Keyboard notifications
// Call this method somewhere in your view controller setup code.
- (void)registerForKeyboardNotifications
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWasShown:)
name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillBeHidden:)
name:UIKeyboardWillHideNotification object:nil];
}
// Called when the UIKeyboardDidShowNotification is sent.
- (void)keyboardWasShown:(NSNotification*)aNotification
{
NSDictionary* info = [aNotification userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0);
objTableView.contentInset = contentInsets;
objTableView.scrollIndicatorInsets = contentInsets;
// If active text field is hidden by keyboard, scroll it so it's visible
// Your application might not need or want this behavior.
CGRect aRect = self.view.frame;
aRect.size.height -= kbSize.height;
if (!CGRectContainsPoint(aRect, activeField.frame.origin) ) {
CGPoint scrollPoint = CGPointMake(0.0, activeField.frame.origin.y-kbSize.height);
[objTableView setContentOffset:scrollPoint animated:YES];
}
}
// Called when the UIKeyboardWillHideNotification is sent
- (void)keyboardWillBeHidden:(NSNotification*)aNotification
{
UIEdgeInsets contentInsets = UIEdgeInsetsZero;
objTableView.contentInset = contentInsets;
objTableView.scrollIndicatorInsets = contentInsets;
}
#pragma mark - UITextFieldDelegate protocol method
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
activeField = textField;
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
activeField = nil;
}
Try this code:
if (!CGRectContainsPoint(aRect, activeField.frame.origin) ) {
CGRect rc = [activeField bounds];
rc = [activeField convertRect:rc toView:objTableView];
[objTableView scrollRectToVisible:rc animated:YES];
}