I have a question that is perhaps very basic.
I`m building a custom cell, without a Xib file, all programmatically. In my CustomHell.m file I have basically only two methods: initWithStyle and layoutSubviews.
I have managed to add programmatically some labels and a button. Now I wish to add a specific custom view - FacebookLikeView (https://github.com/brow/FacebookLikeView) - but I have no idea how to do it.
This is the code in my "initWithStyle:reuseIdentifier:
//StoreName Label
storeName = [[UILabel alloc] init];
storeName.textAlignment = UITextAlignmentLeft;
storeName.font = [UIFont boldSystemFontOfSize: 16]; //12
storeName.backgroundColor = [UIColor clearColor];
storeName.adjustsFontSizeToFitWidth = YES;
//checkIn Button
checkInButton = [UIButton buttonWithType:UIButtonTypeCustom];
checkInButton.frame = CGRectMake(203,10,86,25);
[checkInButton setImage:[UIImage imageNamed:#"Check-In.png"] forState:UIControlStateNormal];
[checkInButton addTarget:self.nextResponder action:#selector(addCheckin:) forControlEvents:UIControlEventTouchUpInside];
checkInButton.backgroundColor = [UIColor redColor];
//FACEBOOK
facebookLikeButton = [UIButton buttonWithType:UIButtonTypeCustom];
facebookLikeButton.frame = CGRectMake(169,40,119,25);
[self.contentView addSubview:storeName];
[self.contentView addSubview:storeAddress];
[self.contentView addSubview:subtitle];
[self.contentView addSubview:checkInButton];
[self.contentView addSubview:facebookLikeButton];
//[self.contentView addSubview:likeButton];
return self;
And this is my layoutSubviews:
[super layoutSubviews];
CGRect contentRect = self.contentView.bounds;
CGFloat boundsX = contentRect.origin.x;
storeName.frame = CGRectMake(boundsX+10, 15, 190, 20);
storeAddress.frame = CGRectMake(boundsX+10, 42, 200, 40);
subtitle.frame = CGRectMake(boundsX+10, 77, 280, 30);
likeButton.frame = CGRectMake(boundsX+199, 42, 50, 20);
The header file looks like this:
#import "FacebookLikeView.h"
#interface CustomCellHead : UITableViewCell
{
FacebookLikeView *likeButton;
UIButton *facebookLikeButton;
UIButton *checkInButton;
UILabel *storeName;
UILabel *storeAddress;
UILabel *subtitle;
}
#property(nonatomic,retain) FacebookLikeView *likeButton;
#property(nonatomic,retain) UIButton *checkInButton;
#property(nonatomic,retain) UILabel *storeName;
#property(nonatomic,retain) UILabel *storeAddress;
#property(nonatomic,retain) UILabel *subtitle;
#end
Try [self addSubview: storeName] instead of [self.contentView addSubview: storeName]
Related
I am trying to use Objective-C in iOS Single View app to program a UIButton to change the text in a UILabel. Is there a way to run a function for this to be implemented in my "ViewController.m" file?
Here is my Source Code:
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)loadView {
//UIBUTTON
//allocate the view
self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
//set the view's background color
self.view.backgroundColor = [UIColor whiteColor];
//create the button
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
//set the position of the button
button.frame = CGRectMake(50, 280, 280, 50);
//set the font size of the button
button.titleLabel.font = [UIFont systemFontOfSize:40];
//set the text color of the button, before it is pressed
[button setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
//set the text color of the button, while it is pressed
[button setTitleColor:[UIColor grayColor] forState:UIControlStateHighlighted];
//set the button's title
[button setTitle:#"3" forState:UIControlStateNormal];
//listen for clicks
[button addTarget:self action:#selector(buttonPressed)
forControlEvents:UIControlEventTouchUpInside];
//add the button to the view
[self.view addSubview:button];
//UILABEL
UILabel *Question=[ [UILabel alloc] initWithFrame:CGRectMake(10,200,350,60)];
Question.text=#"How many horns does a Triceratops have?";
Question.backgroundColor = [UIColor grayColor];
Question.textColor = [UIColor whiteColor];
Question.font=[UIFont fontWithName:#"Helvetica" size:18 ];
[self.view addSubview:Question];
}
-(void)buttonPressed { }
#end
Is it possible to trigger the change in text in my buttonPressed function? Thanks so much for anybody's help!
The problem is that when you create your label and add it to the interface...
UILabel *Question=[ [UILabel alloc] initWithFrame:CGRectMake(10,200,350,60)];
// ...
[self.view addSubview:Question];
...you didn't keep a reference to it. So now, in buttonPressed, you have no way to talk about the label.
Make a property:
#interface ViewController ()
#property (nonatomic, weak) UILabel* questionLabel;
#end
... and when you create the label, remember to set that property to that label. Now you will be able to access the text of that label later on, in buttonPressed (or anywhere else), through the property.
I am using zBar SDK once a qr code detected a delegate will run, inside this delegate I defined a myView and used it as a overlay on the camera with information about that qr code.
inside the myView there is a button which calls a method (testAction) but inside this method I cannot acces any of objects which I'd defined in the delegate, how can I access to to myView and objects inside that inside testAction?
- (void) imagePickerController: (UIImagePickerController*) reader
didFinishPickingMediaWithInfo: (NSDictionary*) info
{
UIView *myView;
CGRect frame= CGRectMake(0, 0, 320, 428);
myView=[[UIView alloc] initWithFrame:frame];
myView.backgroundColor=[UIColor greenColor];
myView.alpha=0.7;
CGRect labelFrame = CGRectMake( 0, 0, 500, 30 );
UILabel* myLabel = [[UILabel alloc] initWithFrame: labelFrame];
[myLabel setTextColor: [UIColor orangeColor]];
NSString *combined = [NSString stringWithFormat:#"%#%#", #"Title: ", symbol.data];
myLabel.text=combined;
UIButton * myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
myButton.frame = CGRectMake(10, 50, 100, 50);
myButton.tag = 121;
[myButton setTitle:#"Do Something" forState:UIControlStateNormal];
[myButton setBackgroundImage:nil forState:UIControlStateNormal];
[myButton addTarget:self action:#selector(testAction:) forControlEvents:UIControlEventTouchUpInside];
//[button setBackgroundColor:red];
[myView addSubview: myLabel];
[myView addSubview: myButton];
reader.cameraOverlayView=myView;
}
- (void)testAction: (id)sender{
//my issue is here
}
Make them properties.
In your interface have:
#property (strong, nonatomic) UIView *myView;
#property (strong, nonatomic) UILabel *myLabel;
#property (strong, nonatomic) UIButton *myButton;
In your delegate method:
CGRect frame= CGRectMake(0, 0, 320, 428);
self.myView=[[UIView alloc] initWithFrame:frame];
self.myView.backgroundColor=[UIColor greenColor];
self.myView.alpha=0.7;
CGRect labelFrame = CGRectMake( 0, 0, 500, 30 );
self.myLabel = [[UILabel alloc] initWithFrame: labelFrame];
self.myLabel.textColor = [UIColor orangeColor];
self.myLabel.text = [NSString stringWithFormat:#"%#%#", #"Title: ", symbol.data];
self.myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
self.myButton.frame = CGRectMake(10, 50, 100, 50);
self.myButton.tag = 121;
[self.myButton setTitle:#"Do Something" forState:UIControlStateNormal];
[self.myButton setBackgroundImage:nil forState:UIControlStateNormal];
[self.myButton addTarget:self action:#selector(testAction:) forControlEvents:UIControlEventTouchUpInside];
[self.myView addSubview:self.myLabel];
[self.myView addSubview:self.myButton];
reader.cameraOverlayView = self.myView;
Finally in your action:
- (void)testAction: (id)sender
{
// self.myView, self.myLabel and self.myButton are all available.
}
i am very new to iOS and xcode. i want to create a textfield without using nib files or storyboard. i searched for the answers but everywhere its kind of confusing or they have used nib files. i have created buttons and its working fine but for textfields m facing problems. here is my viewcontroller.m please help.
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)loadView {
self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
self.view.backgroundColor = [UIColor purpleColor];
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UITextField *textfield;
button.frame = CGRectMake(10 ,350 , 300, 40);
button1.frame = CGRectMake(10 ,50 , 300, 40);
textfield.frame = CGRectMake(10, 100, 200, 30);
[button setTitle:#"Change screen to green!" forState:UIControlStateNormal];
[button1 setTitle:#"click screen to red!" forState:UIControlStateNormal];
[button addTarget:self action:#selector(buttonPressed) forControlEvents:UIControlEventTouchUpInside];
[button1 addTarget:self action:#selector(buttonPressed1) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
[self.view addSubview:button1];
[self.view addSubview:textfield];
}
-(void)buttonPressed {
self.view.backgroundColor = [UIColor greenColor];
}
-(void)buttonPressed1 {
self.view.backgroundColor = [UIColor redColor];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
#end
thanks & regards
You just declared the UITextField instead of allocating. You must allocate it first then set frame & add it on the view like -
UITextField *txt = [[UITextField alloc] init];
txt.frame = CGRectMake(10, 100, 200, 30);
txt.delegate = self;
[self.view adsubview:txt];
It solves your problem.
First use
UITextField *textfield = [[UITextField alloc] init];
instead of
UITextField *textfield;
Then set backgroud color of textfield since the backgroud color will be clearColor by default.
textfield.backgroundColor = [UIColor whiteColor];
or use
textfield.borderStyle = UITextBorderStyleRoundedRect;
to get white colored bordered text field.
If you've added the alloc init like the answers have suggested, your text field is in fact on the screen, but since it has no border or no text, you can't see it. Try adding this line, and then you will see it:
textfield.borderStyle = UITextBorderStyleRoundedRect;
Use this:
UITextField *textfield = [[UITextField alloc] init];
Insetd of
UITextField *textfield;
UITextField *textfield; Just crete object reference Not object.
UITextField *textfield =[[UITextField alloc] init];
textfield.frame = CGRectMake(10, 100, 200, 30);
textfield.delegate = self; [self.view addSubview:textfield];
[self.view bringSubViewToFront:textfield];
may solve the problem
I have a very small animation I want to do by moving a view's frame using blocks (rather than the animation headers).
My view hierarchy is quite big so I will explain everything in regards of the specific view I want to animate.
The biggest view is the one that takes the whole screen, so it is 320x480 points. Inside this view, I have another view called "keypadContainerView" that is 320x200 points, located on 0, 261 and it appears at the bottom of the screen. This keypadContainerView has a subview called keypadView, which has a bunch of small buttons as subviews.
Biggest View -> KeypadContainerView -> keypadView -> UIbuttons.
An screenshot:
Although this could go without saying, the keypad there is the keypadContainerView, with is't keypadView and buttons. I need this hierarchy because I'm aiming for eye candy here, and each layer has a different background.
The way I create and deal with that view is here:
keypadViewContainer = [[[UIView alloc] initWithFrame:CGRectMake(0, 261, 320, 200)] autorelease]; //(Original is 0, 261, 320, 200)
keypadView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 200)];
[keypadViewContainer addSubview:keypadView];
//Add the buttons
[self.view addSubview:keypadViewContainer];
And this is how I'm trying to animate it:
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
[UIView animateWithDuration:5.0 animations:^{
self.keypadViewContainer.frame = CGRectMake(0, 0, 320, 200);
} completion:NULL];
}
What is funny is that if I NSLog something in the animations: parameter, I actually get some output so the method is definitely getting called. It's just not animating anything at all.
The whole controller code is here, in case you need it:
//UnlockKeyboardViewController
//------------------------------------------------------------------------
#interface UnlockKeyboardViewController : UIViewController
{
NSArray *buttons;
NSArray *passcodeFields;
UIImage *buttonBackgroundImage;
UIImage *buttonBackgroundHighlightedImage;
UIImage *middleButtonBackgroundImage;
UIImage *middleButtonBackgroundImageHighlighted;
UIImage *screenBackgroundImage;
UIImage *infoViewContainerImage;
UIImage *keypadViewContainerImage;
UIImage *passcodeFieldsContainerImage;
UIImage *infoViewImage;
UIImage *passcodeViewImage;
UIView *infoViewContainer;
UIView *keypadViewContainer;
UIView *passcodeFieldsContainer;
UIView *infoView;
UIView *keypadView;
UIView *passcodeFieldsView;
UIView *infoToDisplayView; //The view the programmer passes to show in infoView.
}
#property(nonatomic, retain)UIImage *buttonBackgroundImage;
#property(nonatomic, retain)UIImage *buttonBackgroundHighlightedImage;
#property(nonatomic, retain)UIImage *screenBackgroundImage;
#property(nonatomic, retain)UIImage *keypadViewBackgroundImage;
#property(nonatomic, retain)UIImage *infoViewContainerImage;
#property(nonatomic, retain)UIImage *keypadViewContainerImage;
#property(nonatomic, retain)UIImage *passcodeFieldsContainerImage;
#property(nonatomic, retain)UIImage *infoViewImage;
#property(nonatomic, retain)UIImage *passcodeViewImage;
#property(nonatomic, retain)UIView *infoToDisplayView;
//Properties for container views.
#property(nonatomic, retain)UIView *infoViewContainer;
#property(nonatomic, retain)UIView *keypadViewContainer;
#property(nonatomic, retain)UIView *passcodeFieldsContainer;
#end
#implementation UnlockKeyboardViewController
#synthesize buttonBackgroundImage = _buttonBackgroundImage;
#synthesize buttonBackgroundHighlightedImage = _buttonBackgroundHighlightedImage;
#synthesize screenBackgroundImage = _screenBackgroundImage;
#synthesize keypadViewBackgroundImage = _keypadViewBackgroundImage;
#synthesize infoViewContainerImage = _infoViewContainerImage;
#synthesize keypadViewContainerImage = _keypadViewContainerImage;
#synthesize passcodeFieldsContainerImage = _passcodeFieldsContainerImage;
#synthesize infoViewImage = _infoViewImage;
#synthesize passcodeViewImage = _passcodeViewImage;
#synthesize infoToDisplayView = _infoToDisplayView;
//Synthesizers for container views.
#synthesize infoViewContainer = _infoViewContainer;
#synthesize keypadViewContainer = _keypadViewContainer;
#synthesize passcodeFieldsContainer = _passcodeFieldsContainer;
-(void)loadView
{
[super loadView];
self.view.frame = CGRectMake(0, 0, 320, 480);
_unlockKeyboardBundle = [NSBundle bundleForClass:[self class]];
buttonBackgroundImage = [UIImage imageWithContentsOfFile:[_unlockKeyboardBundle pathForResource:#"button" ofType:#"png"]];
middleButtonBackgroundImage = [UIImage imageWithContentsOfFile:[_unlockKeyboardBundle pathForResource:#"middleButton" ofType:#"png"]];
buttonBackgroundHighlightedImage = [UIImage imageWithContentsOfFile:[_unlockKeyboardBundle pathForResource:#"pushedButton" ofType:#"png"]];
middleButtonBackgroundImageHighlighted = [UIImage imageWithContentsOfFile:[_unlockKeyboardBundle pathForResource:#"pushedButtonMiddle" ofType:#"png"]];
infoViewContainerImage = [UIImage imageWithContentsOfFile:[_unlockKeyboardBundle pathForResource:#"infoViewContainerImage" ofType:#"png"]];
keypadViewContainerImage = [UIImage imageWithContentsOfFile:[_unlockKeyboardBundle pathForResource:#"keypadViewContainerImage" ofType:#"png"]];
passcodeFieldsContainerImage = [UIImage imageWithContentsOfFile:[_unlockKeyboardBundle pathForResource:#"passcodeViewContainerImage" ofType:#"png"]];
infoViewImage = [UIImage imageWithContentsOfFile:[_unlockKeyboardBundle pathForResource:#"infobackground" ofType:#"png"]];
passcodeViewImage = [UIImage imageWithContentsOfFile:[_unlockKeyboardBundle pathForResource:#"passcodescreen" ofType:#"png"]];
//self.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageWithContentsOfFile:[_unlockKeyboardBundle pathForResource:#"lockbackground" ofType:#"png"]]];
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
keypadViewContainer = [[[UIView alloc] initWithFrame:CGRectMake(0, 261, 320, 200)] autorelease]; //(Original is 0, 261, 320, 200)
keypadView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 200)];
[keypadViewContainer addSubview:keypadView];
keypadViewContainer.backgroundColor = [UIColor colorWithPatternImage:keypadViewContainerImage];
NSMutableArray *tempButtons = [NSMutableArray array];
self.view.opaque = YES;
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeCustom];
[button1 setTitle:#"1" forState:UIControlStateNormal];
button1.frame = CGRectMake(0, 0, 106, 50);
UIButton *button4 = [UIButton buttonWithType:UIButtonTypeCustom];
[button4 setTitle:#"4" forState:UIControlStateNormal];
button4.frame = CGRectMake(0, 50, 106, 50);
UIButton *button7 = [UIButton buttonWithType:UIButtonTypeCustom];
[button7 setTitle:#"7" forState:UIControlStateNormal];
button7.frame = CGRectMake(0, 100, 106, 50);
UIButton *cancel = [UIButton buttonWithType:UIButtonTypeCustom];
[cancel setTitle:NSLocalizedString(#"cancel", #"Cancel string") forState:UIControlStateNormal];
cancel.frame = CGRectMake(0, 150, 106, 50);
UIButton *button2 = [UIButton buttonWithType:UIButtonTypeCustom];
[button2 setTitle:#"2" forState:UIControlStateNormal];
button2.frame = CGRectMake(106, 0, 108, 50);
UIButton *button5 = [UIButton buttonWithType:UIButtonTypeCustom];
[button5 setTitle:#"5" forState:UIControlStateNormal];
button5.frame = CGRectMake(106, 50, 108, 50);
UIButton *button8 = [UIButton buttonWithType:UIButtonTypeCustom];
[button8 setTitle:#"8" forState:UIControlStateNormal];
button8.frame = CGRectMake(106, 100, 108, 50);
UIButton *button0 = [UIButton buttonWithType:UIButtonTypeCustom];
[button0 setTitle:#"0" forState:UIControlStateNormal];
button0.frame = CGRectMake(106, 150, 108, 50);
UIButton *button3 = [UIButton buttonWithType:UIButtonTypeCustom];
[button3 setTitle:#"3" forState:UIControlStateNormal];
button3.frame = CGRectMake(214, 0, 106, 50);
UIButton *button6 = [UIButton buttonWithType:UIButtonTypeCustom];
[button6 setTitle:#"6" forState:UIControlStateNormal];
button6.frame = CGRectMake(214, 50, 106, 50);
UIButton *button9 = [UIButton buttonWithType:UIButtonTypeCustom];
[button9 setTitle:#"9" forState:UIControlStateNormal];
button9.frame = CGRectMake(214, 100, 106, 50);
UIButton *cancelOrDelete = [UIButton buttonWithType:UIButtonTypeCustom];
[cancelOrDelete setTitle:#"<-" forState:UIControlStateNormal];
cancelOrDelete.frame = CGRectMake(214, 150, 108, 50);
[tempButtons addObject:button1];
[tempButtons addObject:button2];
[tempButtons addObject:button3];
[tempButtons addObject:button4];
[tempButtons addObject:button5];
[tempButtons addObject:button6];
[tempButtons addObject:button7];
[tempButtons addObject:button8];
[tempButtons addObject:button9];
[tempButtons addObject:button0];
[tempButtons addObject:cancel];
[tempButtons addObject:cancelOrDelete];
buttons = [[NSArray arrayWithArray:tempButtons] retain];
for(UIButton *theButton in buttons)
{
if([theButton.currentTitle isEqualToString:#"2"] || [theButton.currentTitle isEqualToString:#"5"] || [theButton.currentTitle isEqualToString:#"8"] || [theButton.currentTitle isEqualToString:#"0"])
{
[theButton setBackgroundImage:middleButtonBackgroundImage forState:UIControlStateNormal];
[theButton setBackgroundImage:middleButtonBackgroundImageHighlighted forState:UIControlStateHighlighted];
}else
{
[theButton setBackgroundImage:buttonBackgroundImage forState:UIControlStateNormal];
[theButton setBackgroundImage:middleButtonBackgroundImageHighlighted forState:UIControlStateHighlighted];
}
[keypadView addSubview:theButton];
}
[self.view addSubview:keypadViewContainer];
passcodeFieldsView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0,320, 110)] autorelease];
passcodeFieldsContainer = [[[UIView alloc] initWithFrame:CGRectMake(0, 151, 320, 110)] autorelease];
passcodeFieldsContainer.backgroundColor = [UIColor colorWithPatternImage:passcodeFieldsContainerImage];
passcodeFieldsView.backgroundColor = [UIColor colorWithPatternImage:passcodeViewImage];
NSMutableArray *passTemps = [NSMutableArray array];
UITextField *tf1 = [[[UITextField alloc] initWithFrame:CGRectMake(24, 27, 50, 50)] autorelease];
UITextField *tf2 = [[[UITextField alloc] initWithFrame:CGRectMake(98, 27, 50, 50)] autorelease];
UITextField *tf3 = [[[UITextField alloc] initWithFrame:CGRectMake(172, 27, 50, 50)] autorelease];
UITextField *tf4 = [[[UITextField alloc] initWithFrame:CGRectMake(246, 27, 50, 50)] autorelease];
[passTemps addObject:tf1];
[passTemps addObject:tf2];
[passTemps addObject:tf3];
[passTemps addObject:tf4];
passcodeFields = [[NSArray arrayWithArray:passTemps] retain];
for(UITextField *theTf in passcodeFields)
{
theTf.borderStyle = UITextBorderStyleBezel;
theTf.backgroundColor = [UIColor whiteColor];
theTf.enabled = NO;
theTf.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
theTf.textAlignment = UITextAlignmentCenter;
theTf.adjustsFontSizeToFitWidth = YES;
theTf.alpha = 0.7;
theTf.secureTextEntry = YES;
[passcodeFieldsView addSubview:theTf];
}
[passcodeFieldsContainer addSubview:passcodeFieldsView];
[self.view addSubview:passcodeFieldsContainer];
infoView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 151)] autorelease];
infoView.backgroundColor = [UIColor colorWithPatternImage:infoViewImage];
infoViewContainer = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 151)] autorelease];
infoViewContainer.backgroundColor = [UIColor colorWithPatternImage:infoViewContainerImage];
[infoViewContainer addSubview:infoView];
[self.view addSubview:infoViewContainer];
[pool drain];
}
-(void)viewDidLoad
{
[super viewDidLoad];
}
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
[UIView animateWithDuration:5.0 animations:^{
self.keypadViewContainer.frame = CGRectMake(0, 0, 320, 200);
} completion:NULL];
}
-(void)dealloc
{
[buttons release];
[passcodeFields release];
[buttonBackgroundImage release];
[buttonBackgroundHighlightedImage release];
[screenBackgroundImage release];
[infoView release];
[keypadView release];
[passcodeFieldsView release];
[infoViewContainerImage release];
[keypadViewContainerImage release];
[passcodeFieldsContainerImage release];
[infoViewImage release];
[passcodeViewImage release];
[infoToDisplayView release];
[super dealloc];
}
#end
I have a small feeling it may have something to do with the way I'm dealing with my views, so there's the whole source code.
Any help with this will be highly appreciated.
Instead of those :
keypadViewContainer = [[[UIView alloc] initWithFrame:CGRectMake(0, 261, 320, 200)] autorelease];
Use
Self.keypadViewContainer = .....
and your #synthesize are wrong.
You declare iVars explicitly without underscore,
But use synthesize to create underscored iVars.
So your properties correspond to
_keypadViewContainer
but in your loadView you assign to keypadViewController
Quickest fix: just use #synthesize instead of synthesize = ...
(that is only if you don't use Xcode 4.4!)
Best fix: get rid of the explicit iVar declaration and
Make sure to use _keypadViewContainer etc. when you access iVar directly like in dealloc.
Ideal fix: use ARC and use IB to build your keypad interface (why don't you btw?)
I am trying to implement a "Done" button in a UIPickerView Similar to the one under this link
I looked in the class reference but I couldn t find it
Thanks
The easiest way to do it is to model it in Interface Builder. It is a UIView containing a UIToolbar and a UIPickerView.
Then create an outlet for the UIView and connect it.
If you then have a UITextField you can assign your custom view to its inputView property.
[self.textField setInputView:self.customPicker];
Alternatively you can add the picker to your main view...
- (void)viewDidLoad
{
[super viewDidLoad];
self.customPicker.frame = CGRectMake(0, CGRectGetMaxY(self.view.frame), CGRectGetWidth(self.customPicker.frame), CGRectGetHeight(self.customPicker.frame));
[self.view addSubview:self.customPicker];
}
... and then use this method to show or hide the picker.
- (void)setPickerHidden:(BOOL)hidden
{
CGAffineTransform transform = hidden ? CGAffineTransformIdentity : CGAffineTransformMakeTranslation(0, -CGRectGetHeight(self.customPicker.frame));
[UIView animateWithDuration:0.3 animations:^{
self.customPicker.transform = transform;
}];
}
I added a UIToolbar with a UIBarButtonItem for the 'done' button in my xib with the frame set so that it's not initially visible (y value equal to the height of the parent view).
Every time the user access the picker, I changed the frame (the y value) of the UIDatePicker and the UIToolbar with an animation so that it slides up along with the picker from the bottom of the screen similar to the keyboard.
Check out my code below.
- (IBAction)showPicker
{
if(pickerVisible == NO)
{
// create the picker and add it to the view
if(self.datePicker == nil) self.datePicker = [[[UIDatePicker alloc] initWithFrame:CGRectMake(0, 460, 320, 216)] autorelease];
[self.datePicker setMaximumDate:[NSDate date]];
[self.datePicker setDatePickerMode:UIDatePickerModeDate];
[self.datePicker setHidden:NO];
[self.view addSubview:datePicker];
// the UIToolbar is referenced 'using self.datePickerToolbar'
[UIView beginAnimations:#"showDatepicker" context:nil];
// animate for 0.3 secs.
[UIView setAnimationDuration:0.3];
CGRect datepickerToolbarFrame = self.datePickerToolbar.frame;
datepickerToolbarFrame.origin.y -= (self.datePicker.frame.size.height + self.datePickerToolbar.frame.size.height);
self.datePickerToolbar.frame = datepickerToolbarFrame;
CGRect datepickerFrame = self.datePicker.frame;
datepickerFrame.origin.y -= (self.datePicker.frame.size.height + self.datePickerToolbar.frame.size.height);
self.datePicker.frame = datepickerFrame;
[UIView commitAnimations];
pickerVisible = YES;
}
}
- (IBAction)done
{
if(pickerVisible == YES)
{
[UIView beginAnimations:#"hideDatepicker" context:nil];
[UIView setAnimationDuration:0.3];
CGRect datepickerToolbarFrame = self.datePickerToolbar.frame;
datepickerToolbarFrame.origin.y += (self.datePicker.frame.size.height + self.datePickerToolbar.frame.size.height);
self.datePickerToolbar.frame = datepickerToolbarFrame;
CGRect datepickerFrame = self.datePicker.frame;
datepickerFrame.origin.y += (self.datePicker.frame.size.height + self.datePickerToolbar.frame.size.height);
self.datePicker.frame = datepickerFrame;
[UIView commitAnimations];
// remove the picker after the animation is finished
[self.datePicker performSelector:#selector(removeFromSuperview) withObject:nil afterDelay:0.3];
}
}
I create a custom class, this supports multiple orientation:
DateTimePicker.h
#interface DateTimePicker : UIView {
}
#property (nonatomic, assign, readonly) UIDatePicker *picker;
- (void) setMode: (UIDatePickerMode) mode;
- (void) addTargetForDoneButton: (id) target action: (SEL) action;
#end
DateTimePicker.m
#define MyDateTimePickerToolbarHeight 40
#interface DateTimePicker()
#property (nonatomic, assign, readwrite) UIDatePicker *picker;
#property (nonatomic, assign) id doneTarget;
#property (nonatomic, assign) SEL doneSelector;
- (void) donePressed;
#end
#implementation DateTimePicker
#synthesize picker = _picker;
#synthesize doneTarget = _doneTarget;
#synthesize doneSelector = _doneSelector;
- (id) initWithFrame: (CGRect) frame {
if ((self = [super initWithFrame: frame])) {
self.backgroundColor = [UIColor clearColor];
UIDatePicker *picker = [[UIDatePicker alloc] initWithFrame: CGRectMake(0, MyDateTimePickerToolbarHeight, frame.size.width, frame.size.height - MyDateTimePickerToolbarHeight)];
[self addSubview: picker];
UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame: CGRectMake(0, 0, frame.size.width, MyDateTimePickerToolbarHeight)];
toolbar.barStyle = UIBarStyleBlackOpaque;
toolbar.autoresizingMask = UIViewAutoresizingFlexibleWidth;
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithTitle: #"Done" style: UIBarButtonItemStyleBordered target: self action: #selector(donePressed)];
UIBarButtonItem* flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
toolbar.items = [NSArray arrayWithObjects:flexibleSpace, doneButton, nil];
[self addSubview: toolbar];
self.picker = picker;
picker.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleBottomMargin;
self.autoresizesSubviews = YES;
self.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleBottomMargin;
}
return self;
}
- (void) setMode: (UIDatePickerMode) mode {
self.picker.datePickerMode = mode;
}
- (void) donePressed {
if (self.doneTarget) {
[self.doneTarget performSelector:self.doneSelector withObject:nil afterDelay:0];
}
}
- (void) addTargetForDoneButton: (id) target action: (SEL) action {
self.doneTarget = target;
self.doneSelector = action;
}
Using custom view in your view controller:
- (void)viewDidLoad
{
[super viewDidLoad];
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self
action:#selector(buttonPressed:)
forControlEvents:UIControlEventTouchDown];
[button setTitle:#"Show picker" forState:UIControlStateNormal];
button.frame = CGRectMake(100, 50, 100, 40.0);
[self.view addSubview:button];
CGRect screenRect = [[UIScreen mainScreen] bounds];
CGFloat screenWidth = screenRect.size.width;
CGFloat screenHeight = screenRect.size.height;
picker = [[DateTimePicker alloc] initWithFrame:CGRectMake(0, screenHeight/2 - 35, screenWidth, screenHeight/2 + 35)];
[picker addTargetForDoneButton:self action:#selector(donePressed)];
[self.view addSubview:picker];
picker.hidden = YES;
[picker setMode:UIDatePickerModeDate];
}
-(void)donePressed {
picker.hidden = YES;
}
-(void)buttonPressed:(id)sender {
picker.hidden = NO;
}
Hope this helps. :)
There is a more elegant solution. I'm not sure if this is recent (as of iOS7), but this has been working for me splendidly.
TJDatePicker.h
#protocol TJDatePickerActionDelegate <NSObject>
- (void)cancel:(id)sender;
- (void)done:(id)sender;
#end
#interface TJDatePicker : UIDatePicker
#property (strong, nonatomic) UIView *navInputView;
#property (weak, nonatomic) id<TJDatePickerActionDelegate> actionDelegate;
#end
TJDatePicker.m
#import "TJDatePicker.h"
#interface TJDatePicker ()
#property (strong, nonatomic) TJButton *cancelButton;
#property (strong, nonatomic) TJButton *doneButton;
#end
#implementation TJDatePicker
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
[self updateSubviews];
}
return self;
}
- (void)layoutSubviews
{
[super layoutSubviews];
[self updateSubviews];
}
- (void)updateSubviews
{
self.navInputView.frame = CGRectMake(0, 0, self.width, 45);
self.cancelButton.frame = CGRectMake(5, 5, 80, 35);
CGFloat width = 80;
self.doneButton.frame = CGRectMake(CGRectGetMaxX(self.navInputView.frame) - width, self.cancelButton.frame.origin.y, width, self.cancelButton.height);
}
- (UIView *)navInputView
{
if (!_navInputView)
{
_navInputView = [[UIView alloc] init];
_navInputView.backgroundColor = [UIColor whiteColor];
self.cancelButton = [UIButton buttonWithType:UIButtonTypeCustom];
[self.cancelButton setTitle:#"CANCEL" forState:UIControlStateNormal];
[self.cancelButton addTarget:self action:#selector(cancelButtonPressed) forControlEvents:UIControlEventTouchUpInside];
[_navInputView addSubview:self.cancelButton];
self.doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
[self.doneButton setTitle:#"DONE" forState:UIControlStateNormal];
[self.doneButton addTarget:self action:#selector(doneButtonPressed) forControlEvents:UIControlEventTouchUpInside];
[_navInputView addSubview:self.doneButton];
}
return _navInputView;
}
- (void)cancelButtonPressed
{
[self.actionDelegate cancel:self];
}
- (void)doneButtonPressed
{
[self.actionDelegate done:self];
}
And then at implementation time...
self.datePicker = [[TJDatePicker alloc] init];
self.datePicker.actionDelegate = self;
self.textField.inputAccessoryView = self.datePicker.navInputView;
The key here is to use the inputAccessoryView of the UITextField that you are planning on setting the UIDatePicker to.
You get the "Done" button in the toolbar using the ActionSheetPicker. Its is a great alternative to building it yourself.
https://github.com/skywinder/ActionSheetPicker-3.0
Success! Ok, I would never suggest doing this, but here's where the done button is created in your particular tutorial code:
Looking at the storyboard, we can see that when you click the "Role" box within "AddPersonTVC.h" (class at the top right of the storyboard), it pops up a class called "RollPickerTVCell.h"
Looking into RollPickerTVCell.h, we notice that the whole class is a subclass of "CoreDataTableViewCell"
#interface RolePickerTVCell : CoreDataTableViewCell <UIPickerViewDataSource, UIPickerViewDelegate>
Looking at the class "CoreDataTableViewCell.m", we finally find our uibarbuttonitem!
UIBarButtonItem *doneBtn =[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:#selector(done:)];
In case you are working on a Table View Cell and you are not using a UITextField (hence you won't be using the Accessory View), here's what I did:
I created a table view cell called GWDatePickerCell that looks like this (no .nib files involved).
GWDatePickerCell.h:
#import <UIKit/UIKit.h>
#interface GWDatePickerCell : UITableViewCell
#property (nonatomic, strong) UIDatePicker *datePicker;
#property (nonatomic, strong) UIToolbar *toolbar;
#property (nonatomic, strong) UIBarButtonItem *buttonDone;
#end
GWDatePickerCell.m:
#import "GWDatePickerCell.h"
#implementation GWDatePickerCell
- (id) initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
if(!(self=[super initWithStyle:style reuseIdentifier:reuseIdentifier])) return nil;
_datePicker = [[UIDatePicker alloc] init];
[_datePicker setMinuteInterval:5];
[_datePicker setDatePickerMode:UIDatePickerModeDateAndTime];
[self.contentView addSubview:_datePicker];
_toolbar = [[UIToolbar alloc] init];
_buttonDone = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:nil action:nil];
_toolbar.items = #[[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil], _buttonDone];
[self.contentView addSubview:_toolbar];
return self;
}
- (void)layoutSubviews{
[super layoutSubviews];
CGRect r = self.contentView.bounds;
r.origin.y +=44;
r.size.height = 216;
CGRect tb = self.contentView.bounds;
tb.size.height = 44;
_datePicker.frame = r;
_toolbar.frame = tb;
}
#end
Now all I had to do when creating the cells in the Table View:
Specify the #selector for the Done button.
Set the correct cell height in heightForRowAtIndexPath