handle tap click on the background iphone - iphone

I have a view which contains different textfield.
Clicking on each taxtfield brings up a keyboard and if I click outside the textField the keyboard disappears but the view is also disappear! how can I change the code so that i can only get out of the view using cancel button and tapping down the view not clicking outside of the texfield or by clicking on the background.
- (void)viewDidLoad
{
[super viewDidLoad];
[self.navigationController setNavigationBarHidden:YES];
self.view.backgroundColor = [self.appDel.styleManager appBackgroundGradientWithFrame:self.view.bounds];
self.tapView.backgroundColor = [UIColor clearColor];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self
action:#selector(endPageEdit:)];
tap.delegate = self;
[self.view addGestureRecognizer:tap];
}
- (void)endPageEdit:(UIGestureRecognizer *)sender
{
if (sender.view == self.view) {
[self.view endEditing:YES];
if ([self isFormVisible]) {
[self handleTap:sender];
}
}
}

In your endPageEdit: method, tell the textFields to resignFirstResponder.
- (void)endPageEdit:(UIGestureRecognizer *)sender {
// assumes you have an outlet set up for each of the textFields
[self.textFieldA resignFirstResponder];
[self.textFieldB resignFirstResponder];
if (sender.view == self.view) {
[self.view endEditing:YES];
if ([self isFormVisible]) {
[self handleTap:sender];
}
}
}
Only zero or one of them will be the first responder, but there's no downside to resigning first responder when the control is not first responder. The reason the view is disappearing must have something to do with the endEditing: method or the handleTap method which you did not post.

Related

Hide View by click on any part of the screen in iphone

I have a View which is the subView of the main view in iphone app I want that when subView is shown and user taps on part of the screen except the subView then subView should hide.
Here is the code which I got but it does not hide it :
UITapGestureRecognizer *tapGR;
tapGR = [[[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTap:)] autorelease];
tapGR.numberOfTapsRequired = 1;
[self.View addGestureRecognizer:tapGR];
// Add a delegate method to handle the tap and do something with it.
-(void)handleTap:(UITapGestureRecognizer *)sender
{
if (sender.state == UIGestureRecognizerStateEnded) {
// handling code
[myViewSheet removeFromSuperView];
}
}
implement UIGestureRecognizerDelegate protocol:
.h:
#interface YourView : UIView<UIGestureRecognizerDelegate>
.m:
#implementation YourView{
UIView * subview;
}
...
subview = [[UIView alloc]initWithFrame:CGRectMake(0, 200, 320, 200)];
[self addSubview:subview];
UITapGestureRecognizer *tapGR;
tapGR = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTap:)];
tapGR.numberOfTapsRequired = 1;
tapGR.delegate = self;
[self addGestureRecognizer:tapGR];
...
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
if (touch.view == subView)
{
return NO;
}
else
{
return YES;
}
}
You probably need to set userInteractionEnabled = YES on your main view (The one to which you are attaching the gesture recognizer.)

Keyboard not resigning second time?

Keyboard not resigning second time on the same textfield. I used UITextFieldDelegate. For Ex: I enter something in Name textField and I resign the keyboard. I clicked in MobileNo field entered something. This time keyboard not resigning.
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
Make delegate of your MobileNo
MobileNo.delegate=self;
Or if your are using xib then make Outlet connection of delegate
Try this,
- (void)viewDidLoad
{
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(dismissKeyboard)];
tapGesture.cancelsTouchesInView = NO;
[self.view addGestureRecognizer:tapGesture];
}
-(void)dismissKeyboard
{
[self.view endEditing:YES];
}

Hide UITableview when touches on screen except that table view

am having a scroll view with many text fields when we start editing text field displays tableview below.
when we touches anywhere on screen have to hide table view and that is fine and we touch on tableview cell the text in that cell is displayed in textfield
My problem is when i touches on Uitableviewcell not getting the data in uitextfield .
help me please...
my code is
UITapGestureRecognizer *tapGesture1 = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(dismisstable)];
tapGesture1.cancelsTouchesInView = NO;
[testScroll addGestureRecognizer:tapGesture1];
[tapGesture1 release];
-(void)dismisstable
{
self.autocompletetableview.hidden=YES;
}
First just check tableView datasource and delegate
yourTableView.delegate=self;
yourTableView.dataSource=self;
AND
Just add UITapGestureRecognizer
- (void)viewDidLoad
{
[super viewDidLoad];
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(singleTapGestureCaptured:)];
[scr addGestureRecognizer:singleTap];
}
- (void)singleTapGestureCaptured:(UITapGestureRecognizer *)gesture
{
//Get touch point
//CGPoint touchPoint=[gesture locationInView:scr];
//Hide tableView
[self.yourTableView setHidden:YES];
}
Follow my answer for more dismissing the keyboard from a UITextField,UITextView as a subview of UIScrollView?

Objective-c: How to detect double tap on view?

I am developing an application where I have multiple controls on view but I want to enable them when user double tap the view
You can take the example of double click but in device I want to catch the event when their is double tap.
You need to add an UITapGestureRecognizer to the view which you want to be tapped.
Like this:
- (void)viewDidLoad {
[super viewDidLoad];
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTapGesture:)];
tapGesture.numberOfTapsRequired = 2;
[self.view addGestureRecognizer:tapGesture];
[tapGesture release];
}
- (void)handleTapGesture:(UITapGestureRecognizer *)sender {
if (sender.state == UIGestureRecognizerStateRecognized) {
// handling code
}
}
Add a UITapGestureRecognizer to the view, with numberOfTapsRequired = 2.

Limit tap gesture to scrollview and not the button placed upon it

I have a scroll view and a button placed over it , When i add a tap gesture recognizer the button does not work. Is there any way of limiting the tap only to scroll view and not to the button, so that the button functions normally.
here is my code
UITapGestureRecognizer* tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapGesture:)];
tap.numberOfTapsRequired = 1;
tap.numberOfTouchesRequired = 1;
[scroll addGestureRecognizer:tap];
[tap release];
- (void)tapGesture:(UIGestureRecognizer*)gesture{
NSLog(#"scroll tapped");
}
If you do
tap.cancelsTouchesInView = NO;
It will allow button to be pressed. However taps will be detected along with the button press when you press a button. Do avoid this, you will have to subclass UIScrollView and implement the following method –
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
for ( UIView * subview in self.subviews ) {
UIView * hitView = [subview hitTest:point withEvent:event];
if ( hitView )
return hitView;
}
return [super hitTest:point withEvent:event];
}
Implementing the method above pass the touches to the scroll view's subviews.
There is no need to subclass Scrollview. Following code solves the problem easy way. The method gestureRecognizer:shouldReceiveTouch: does the trick.
UITapGestureRecognizer* tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapGesture:)];
tap.numberOfTapsRequired = 1;
tap.numberOfTouchesRequired = 1;
tap.delegate = self;
tap.cancelsTouchesInView = NO;
[scroll addGestureRecognizer:tap];
[tap release];
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
if (scroll.superview != nil) {
if ([touch.view isKindOfClass:[UIButton class]])
{
return NO; // ignore the touch
}
}
return YES; // handle the touch
}
- (void)tapGesture:(UIGestureRecognizer*)gesture {
NSLog(#"scroll tapped");
}