Purpose:
I want to set right view as label in searchbar's textfield
Following Code working fine in ios 6 for doing the same thing:
UISearchBar *search = [[UISearchBar alloc] init];
[search setTintColor:[UIColor grayColor]];
search.frame = CGRectMake(0, 150, 320,50);
search.delegate = self;
UITextField *searchField=[search.subviews objectAtIndex:1];//Changed this line in ios 7
searchField.backgroundColor=[UIColor redColor];
UILabel *label=[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];
label.text=#"Hello";
label.textColor=[UIColor greenColor];
searchField.rightView = label;
searchField.rightViewMode = UITextFieldViewModeAlways;
[self addSubView:search];
When i have Run the same code in ios 7(with xcode 7.0.2 fully updated), It was giving me error, after googling i got that hiearchy of searchbar to textfield has been changed, so i have modified my code as:
replaced commented line in above code with:
UITextField *searchField=[((UIView *)[search.subviews objectAtIndex:0]).subviews lastObject];
after doing this, it is not giving me any error(also checked the logs by printing the description of textfield and everything is working good), when i run it, it gives textfield with red background but the rightView's label is not shown to me. Now, can anyone help me how to show this rightview.
If you want to do this programatically then you have to declare UISearchBar object in your .h file.
UISearchBar *searchBar;
And in your .m file you can code like:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
searchBar = [[UISearchBar alloc] init];
[searchBar setTintColor:[UIColor grayColor]];
searchBar.frame = CGRectMake(0, 150, 320,50);
searchBar.delegate = self;
[self.view addSubview:searchBar];
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
UITextField *searchField;
if ([[[UIDevice currentDevice] systemVersion] floatValue]<7.0)
searchField=[searchBar.subviews objectAtIndex:1];
else
searchField=[((UIView *)[searchBar.subviews objectAtIndex:0]).subviews lastObject];
searchField.backgroundColor=[UIColor redColor];
UILabel *label=[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];
label.text=#"Hello";
label.textColor=[UIColor greenColor];
searchField.rightView = label;
searchField.rightViewMode = UITextFieldViewModeAlways;
}
I think this will work for both iOS7 and prior versions of iOS7.
First of all, your approach is not good and not maintainable across iOS versions.
I think that initialization of UISearchBarTextField's right view is taking place after you set your custom view to it's rightView property. You will see correct result if you set searchField.rightView in viewDidAppear method:
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
UITextField *searchField=[((UIView *)[_searchBar.subviews objectAtIndex:0]).subviews lastObject];
UILabel *label=[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];
label.text=#"Hello";
label.textColor=[UIColor greenColor];
searchField.rightView = label;
searchField.rightViewMode = UITextFieldViewModeAlways;
}
I've tested it on iOS 7 simulator and it works.
You have to get the text field first.
No need to index subviews to get text field or bar button.
You can directly get the text field and bar button
In swift
let textField = searchBar.valueForKey("searchField") as? UITextField
let cancelBarButton = searchBar.valueForKey("cancelBarButtonItem") as? UIBarButtonItem
In Objective-C
UITextField *textField = [searchBar valueForKey:#"searchField"]:
UIBarButtonItem *cancelBarButton = [searchBar valueForKey:#"cancelBarButtonItem"]:
Then you can set the left view and right view with
textField.leftView = yourView
textField.rightView = yourView
Related
hi i'm begginer in objective-c and i want to learn how i can make UILabel in center of screen
this is my code:
XXRootViewController.h
#interface XXRootViewController : UIViewController{
UILabel *title; } #end
XXRootViewController.m
#import "XXRootViewController.h"
#implementation XXRootViewController {
NSMutableArray *_objects;
}
- (void)loadView {
[super loadView];
self.view = [[[UIView alloc]
initWithFrame:[[UIScreen mainScreen] applicationFrame]]
autorelease];
self.view.backgroundColor = [UIColor whiteColor];
title = [[UILabel alloc] initWithFrame:CGRectMake(300,200,400,200)];
title.text = #"This is Sasuke's first app :)";
[self.view addSubview:title];
}
#end
Try this code i make some changes in you code
self.view = [[UIView alloc]
initWithFrame:[UIScreen mainScreen].bounds];
self.view.backgroundColor = [UIColor whiteColor];
title = [[UILabel alloc] initWithFrame:CGRectMake(0,0,[UIScreen mainScreen].bounds.size.width - 50,200)];
title.text = #"This is Sasuke's first app :)";
title.textAlignment = NSTextAlignmentCenter;
title.center = self.view.center;
[self.view addSubview:title];
You just need to set frame in center of the screen ...
change your one line code with it -
title = [[UILabel alloc] initWithFrame:CGRectMake(self.view.frame.size.width/2 - 200,self.view.frame.size.height/2 - 100,400,200)];
now your label is shown in the center of screen .. This will help you change the frame according to your use...
Has Hardik Thakkar said, the best way would be to use the center method. That way, even if your label would grow, it will always be centred.
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(300,200,400,200)];
label.text = #"something";
label.center = self.view.center; (this should always be you superview)
Now, even if your label is bigger than the size you were expecting, it will always be centred
I have important problem with UIScrollView.
I want to make one app like yahoo weather and using this source code : BTGlassScrollView
in this source code exist one view with name "foregroundView" that is info view. this info view appear when scrolling my ScrollView from bottom to top.
now I make and add my ScrollView by this code:
_viewScroller = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width + 2*blackSideBarWidth, self.view.frame.size.height)];
[_viewScroller setPagingEnabled:YES];
[_viewScroller setDelegate:self];
[_viewScroller setShowsHorizontalScrollIndicator:NO];
[self.view addSubview:_viewScroller];
_glassScrollView1 = [[BTGlassScrollView alloc] initWithFrame:self.view.frame BackgroundImage:[UIImage imageNamed:#"background3"] blurredImage:nil viewDistanceFromBottom:0 foregroundView:[self customView]];
[_viewScroller addSubview:_glassScrollView1];
in my code I write [self customView] that make me info view and this is customView function:
- (UIView *)customView {
//this method is for make UITableView
[self makeTableBuy:[[self.tableDic objectForKey:#"person"] count]];
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, _tableBuy.frame.size.width, _tableBuy.frame.size.height)];
view.layer.cornerRadius = 3;
view.backgroundColor = [UIColor colorWithWhite:0 alpha:.3];
[view addSubview:_tableBuy];
return view;
}
- (UITableView*)makeTableBuy:(int)numberOfRow {
_tableBuy = [[UITableView alloc] initWithFrame:CGRectMake(0,0,self.view.frame.size.width,numberOfRow*TABLE_HEIGHT) style:UITableViewStyleGrouped];
[_tableBuy setTag:1];
[_tableBuy setBackgroundColor:[UIColor clearColor]];
_tableBuy.showsVerticalScrollIndicator = NO;
_tableBuy.separatorStyle = UITableViewCellSeparatorStyleNone;
_tableBuy.rowHeight = TABLE_HEIGHT;
_tableBuy.scrollEnabled = NO;
_tableBuy.delegate = self;
_tableBuy.dataSource = self;
return _tableBuy;
}
now When I'm scrolling my ScrollView my info view (my tableview) moving to top and appear but my scrolling have so lagging.
please guide me how to fix this lag???
I have a button search that located in the right side of the navigation.
This is my code:
UIButton *btnSearch = [UIButton buttonWithType:UIButtonTypeCustom];
btnSearch.frame = CGRectMake(0, 0, 22, 22);
[btnSearch setImage:[UIImage imageNamed:#"search_btn.png"] forState:UIControlStateNormal];
[btnSearch addTarget:self action:#selector(showSearch:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *searchItem = [[UIBarButtonItem alloc] initWithCustomView:_btnSearch];
self.navigationItem.rightBarButtonItems = searchItem ;
This is how it's look.
And I want to display search bar after clicked on the search button, and close it after clicked on cancel and then show the Navigationbar back, but I don't know how to code it.
- (IBAction)showSearch:(id)sender{
???
}
This what I want.
Please help or provide some sample code. I really need it.
Thank for reading.
Add a property UISearchBar *mySearchBar to your viewController as
#property(nonatomic, retain) UISearchBar *mySearchBar;
Conform to UISearchBarDelegate as
#interface HomeViewController () <UISearchBarDelegate>
...
...
#end
Then implement the showSearch method as
-(void)showSearch:(id)sender {
if(!mySearchBar) {
mySearchBar = [[UISearchBar alloc] init];
[mySearchBar setFrame:CGRectMake(0, 0, self.view.frame.size.width, 55)];
[mySearchBar setShowsCancelButton:YES animated:YES];
[self.view addSubview: mySearchBar];
mySearchBar.delegate = self;
self.navigationController.navigationBarHidden = YES;
}else {
searchBar.alpha = 1.0;
self.navigationController.navigationBarHidden = YES;
}
Then implement the search bar delegate method as :
- (void)searchBarCancelButtonClicked:(UISearchBar *) searchBar {
self.navigationController.navigationBarHidden = NO;
[mySearchBar setAlpha:0.0];
}
Hope you have got the idea by doing this. Also you can add it directly to navigation controller, itself, if you want & then play with Showing/ hiding the searchBar alone.
You can add it to navigation controller as just initialize the mysearchBar & add it to navigationBar as :
UIBarButtonItem *searchBarItem = [[UIBarButtonItem alloc] initWithCustomView:mySearchBar];
self.navigationItem.rightBarButtonItem = searchBarItem;
I have the following code which works under iOS5 for putting a UISearchBar at the top of a UITableView on the iPad :
- (void)viewDidLoad
{
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
CGRect searchViewFrame = CGRectMake(33, 33, 264, 45);
UIView *containerSearch = [[UIView alloc] initWithFrame: searchViewFrame];
searchBar = [[UISearchBar alloc] init];
searchBar.barStyle = UIBarStyleDefault;
[containerSearch addSubview: searchBar];
self.tableView.tableHeaderView = containerSearch;
searchController = [[UISearchDisplayController alloc]
initWithSearchBar:searchBar
contentsController:self];
searchBar.delegate = self;
searchController.delegate = self;
searchController.searchResultsDelegate=self;
searchController.searchResultsDataSource=self;
[searchBar release];
}
Under iOS6 however this code behaves strangely. When the iPad is started in landscape mode the UISearchBar is offscreen. It does not appear in its correct position until the ipad is rotated to portrait and back to landscape.
Is this just an iOS6 bug or any suggestions as to how it can be fixed ?
Thanks !
Have you tried to init the searchbar with a frame? searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0,0,265,45)];
I'm trying to create a popover with the following code:
//.h
#interface LoginViewController : UIViewController <UIPopoverControllerDelegate>
....
#end
//.m
- (IBAction)popoverTest:(id)sender
{
UIViewController *popoverContent = [[UIViewController alloc] init];
UIView *myView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 300, 300)];
UILabel *nameLabel = [[UILabel alloc] init]; //edited, fixed UILabel allocation
nameLabel.text = #"Person's name";
[nameLabel sizeToFit];
nameLabel.frame = CGRectMake(10, 10, nameLabel.frame.size.width, nameLabel.frame.size.height);
[myView addSubview:nameLabel];
popoverContent.view = myView;
popoverContent.contentSizeForViewInPopover = CGSizeMake(300, 300);
UIPopoverController *popoverController = [[UIPopoverController alloc] initWithContentViewController:popoverContent];
popoverController.delegate = self;
[popoverController presentPopoverFromRect:((UIButton *)sender).frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
NSLog(#"ran all code");
}
I created a UIView, put a label as a subview and then assigned my view to the UIViewController.view. Then I created a popover controller, sized the popover controller, set the delegate and presented it from the button's frame.
I receive a SIGABRT and the app crashes.
Is there something I'm missing?
EDIT: I fixed the UILabel allocation. The problem is always there.
Your code is quite strange.
For example why do you create a view and do you add it to the content view of your popover?
Then, you have to make attention to memory leaks. There a lot of them in your code.
That said, here a simple example for display a UIViewcontroller within a UIPopoverController.
- (IBAction)yourAction:(id)sender
UIButton* senderButton = (UIButton*)sender;
UIViewController* yourController = [[UIViewController alloc] init];
UIPopoverController* pop = [[UIPopoverController alloc] initWithContentViewController:yourController];
pop.delegate = self;
pop.popoverContentSize = CGSizeMake(300, 300);
self.popover = pop;
[pop presentPopoverFromRect:senderButton.bounds inView:senderButton permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
pop.passthroughViews = nil;
[yourController release];
[pop release];
}
where self.popover is a #property with a retain policy. In this manner in UIPopoverControllerDelegate methods (or wherever you want), you can release your popover and/or dismiss it.
Hope it helps.
P.S. Check the code because I've written by hand.
Edit
Usually when you create a popover, its content view controller is or a custom UIViewController or a UINavigationController (in this case you want to take advantage of its navigation bar).
For example, instead of the simple UIViewController, you could create a custom one
//.h
#interface CustomUIViewController : UIViewController
#end
//.m
#implementation CustomUIViewController
// other code here...
- (void)viewDidLoad
{
// here you are sure that the view has been loaded in memory (alternatively override loadView method), so
UIView* greenView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 300, 300)];
green.backgroundColor = [UIColor greenColor];
[self.view addSubview:greenView];
[greenView release];
}
#end
and use it within a a popover
- (IBAction)yourAction:(id)sender
UIButton* senderButton = (UIButton*)sender;
CustomUIViewController* yourController = [[CustomUIViewController alloc] init];
// same as before...
}
solved my issue from this question.
short answer: ARC doesn't retain the UIPopoverController.
i made it an instance variable and works just fine.
The problem seems to be the following:
UILabel *nameLabel;
nameLabel.text = #"Person's name";
nameLabel is uninitialized. It points to random memory, and when calling -setText: through the text-property, your application crashes.
Apart from this, you have a few memory leaks. Remember: If you call alloc, you have to release it somewhere.
(I'm not sure how this works with the new automatic alloc/release).