Why UIButton's selector method is not called? - ios

Question

My iPhone has iOS8. I'd like to add DONE button on the UIKeyboardTypeNumberPad. DONE is displayed on the left side empty button. But the selector method doneButtonClicked is not called when I touch(press) DONE. My code is below. What is wrong with the code?
- (void)viewWillAppear:(BOOL)animtated {
// Register the observer for the keyboardWillShow event
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardWillShow:) name:UIKeyboardDidShowNotification object:nil];
}
- (void)viewWillDisappear:(BOOL)animtated {
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)keyboardWillShow:(NSNotification *)notification {
// create custom button
if (!self.doneButton)
{
self.doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
[self.doneButton addTarget:self action:#selector(doneButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
}
self.doneButton.adjustsImageWhenHighlighted = NO;
[self.doneButton setTitle:#"DONE" forState:UIControlStateNormal];
[self.doneButton.titleLabel setFont:[UIFont systemFontOfSize:16.0]];
[self.doneButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[self.doneButton setTitleColor:[UIColor blackColor] forState:UIControlStateHighlighted];
// locate keyboard view
if ([[[UIApplication sharedApplication] windows] count] <= 1) return;
UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];
UIView* keyboard;
for(int i=0; i<[tempWindow.subviews count]; i++)
{
keyboard = [tempWindow.subviews objectAtIndex:i];
// keyboard found, add the button
if ([[keyboard description] hasPrefix:#"<UIPeripheralHost"] == YES)
{
BOOL isPortrait = UIInterfaceOrientationIsPortrait([UIApplication sharedApplication].statusBarOrientation);
self.doneButton.frame = CGRectMake(((isPortrait)?0:-1),((int) (keyboard.frame.size.height*3)/4) + ((isPortrait)?0:1),(int) keyboard.frame.size.width/3-1, (isPortrait)?60:40);
[keyboard addSubview:self.doneButton];
}
//This code will work on iOS 8.0
else if([[keyboard description] hasPrefix:#"<UIInputSetContainerView"] == YES)
{
for(int i = 0 ; i < [keyboard.subviews count] ; i++)
{
UIView* hostkeyboard = [keyboard.subviews objectAtIndex:i];
if([[hostkeyboard description] hasPrefix:#"<UIInputSetHost"] == YES)
{
BOOL isPortrait = UIInterfaceOrientationIsPortrait([UIApplication sharedApplication].statusBarOrientation);
self.doneButton.frame = CGRectMake(((isPortrait) ? 0 : -1),((int) (hostkeyboard.frame.size.height*3)/4) + ((isPortrait) ? 0 : 1),(int) hostkeyboard.frame.size.width/3-1, (isPortrait) ? 60 : 40);
[hostkeyboard addSubview:self.doneButton];
}
}
}
else{}
}
}
- (void)doneButtonClicked:(id)sender{
[self.heightUpdateTextField resignFirstResponder];
}

Answer 1

Try this out. This method works for me for iOS 6, 7 & 8:
- (void)keyboardWillShow:(NSNotification *)iNotification
// If there's no keyboard yet, don't do anything
if ([[[UIApplication sharedApplication] windows] count] < 2) {
return;
}
UIWindow *keyboardWindow = [[UIApplication sharedApplication] windows][1];
// Create new dismiss keyboard button
UIButton *aDismissKeyboardButton = [UIButton buttonWithType:UIButtonTypeCustom];
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(#"8.3")) {
aDismissKeyboardButton.frame = CGRectMake(0, [[UIScreen mainScreen] bounds].size.height - 53, [[UIScreen mainScreen] bounds].size.width / 3, 53);
} else {
aDismissKeyboardButton.frame = CGRectMake(0, 163, 106, 53);
}
aDismissKeyboardButton.adjustsImageWhenHighlighted = FALSE;
[aDismissKeyboardButton setExclusiveTouch:YES];
UIImage *aDismissKeyboardButtonImageNormal;
UIImage *aDismissKeyboardButtonImageHighlighted;
aDismissKeyboardButtonImageNormal = [UIImage imageNamed:#"myImage.png"];
aDismissKeyboardButtonImageHighlighted = [UIImage imageNamed:#"myImageHighLighted.png"];
[aDismissKeyboardButton setImage:aDismissKeyboardButtonImageNormal forState:UIControlStateNormal];
[aDismissKeyboardButton setImage:aDismissKeyboardButtonImageHighlighted forState:UIControlStateHighlighted];
SEL aDoneButtonSelector = NSSelectorFromString(#"doneButtonPressed");
[aDismissKeyboardButton addTarget:iDelegate action:aDoneButtonSelector forControlEvents:UIControlEventTouchUpInside];
// Locate keyboard view and add button
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(#"8.3")) {
for (UIWindow *window in [[UIApplication sharedApplication] windows]) {
if ([[window description] hasPrefix:#"<UITextEffectsWindow"]) {
[window addSubview:aDismissKeyboardButton];
return;
}
}
} else if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(#"8.0")) {
for (UIView *aSubview in [[keyboardWindow.subviews objectAtIndex:0] subviews]) {
if ([[aSubview description] hasPrefix:#"<UIInputSetHost"]) {
[aSubview addSubview:aDismissKeyboardButton];
return;
}
}
} else {
NSString *keyboardPrefix = SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(#"6.0") ? #"<UIPeripheralHost" : #"<UIKeyboard";
for (UIView *aSubView in keyboardWindow.subviews) {
if ([[aSubView description] hasPrefix:keyboardPrefix]) {
[aSubView addSubview:aDismissKeyboardButton];
return;
}
}
}
}
Here, I have defined a macro to check system version like this:
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)

Answer 2

sorry for bad english.
I was copied your code earlier to check, what the mistake, after few changes its working good But the Frame of done Button is deferent tha t you can change according to your desire, let check edited code..
- (void)viewWillAppear:(BOOL)animtated {
// Register the observer for the keyboardWillShow event
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardWillShow:) name:UIKeyboardDidShowNotification object:nil];
}
- (void)viewWillDisappear:(BOOL)animtated {
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)keyboardWillShow:(NSNotification *)notification {
// create custom button
UIButton *doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
[doneButton addTarget:self action:#selector(doneButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
doneButton.adjustsImageWhenHighlighted = NO;
[doneButton setTitle:#"DONE" forState:UIControlStateNormal];
[doneButton.titleLabel setFont:[UIFont systemFontOfSize:16.0]];
[doneButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[doneButton setTitleColor:[UIColor blackColor] forState:UIControlStateHighlighted];
// locate keyboard view
if ([[[UIApplication sharedApplication] windows] count] <= 1) return;
UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];
UIView* keyboard;
for(int i=0; i<[tempWindow.subviews count]; i++)
{
keyboard = [tempWindow.subviews objectAtIndex:i];
// keyboard found, add the button
if ([[keyboard description] hasPrefix:#"<UIPeripheralHost"] == YES)
{
BOOL isPortrait = UIInterfaceOrientationIsPortrait([UIApplication sharedApplication].statusBarOrientation);
doneButton.frame = CGRectMake(((isPortrait)?0:-1),((int) (keyboard.frame.size.height*3)/4) + ((isPortrait)?0:1),(int) keyboard.frame.size.width/3-1, (isPortrait)?60:40);
[keyboard addSubview:doneButton];
}
//This code will work on iOS 8.0
else if([[keyboard description] hasPrefix:#"<UIInputSetContainerView"] == YES)
{
for(int i = 0 ; i < [keyboard.subviews count] ; i++)
{
UIView* hostkeyboard = [keyboard.subviews objectAtIndex:i];
if([[hostkeyboard description] hasPrefix:#"<UIInputSetHost"] == YES)
{
BOOL isPortrait = UIInterfaceOrientationIsPortrait([UIApplication sharedApplication].statusBarOrientation);
doneButton.frame = CGRectMake(((isPortrait) ? 0 : -1),((int) (hostkeyboard.frame.size.height*3)/4) + ((isPortrait) ? 0 : 1),(int) hostkeyboard.frame.size.width/3-1, (isPortrait) ? 60 : 40);
[hostkeyboard addSubview:doneButton];
}
}
}
else{}
}
}
- (void)doneButtonClicked:(id)sender{
[self->cityTxt resignFirstResponder]; //cityTxt is my textfield
}
its work for me, hope it works for you also.