- (void)webViewDidFinishLoad:(UIWebView *)YouTubePlayer {
UIButton *b = [self findButtonInView:YouTubePlayer];
[b sendActionsForControlEvents:UIControlEventTouchUpInside];
}
- (UIButton *)findButtonInView:(UIView *)view {
UIButton *button = nil;
if ([view isMemberOfClass:[UIButton class]]) {
return (UIButton *)view;
}
if (view.subviews && [view.subviews count] > 0) {
for (UIView *subview in view.subviews) {
button = [self findButtonInView:subview];
if (button) return button;
}
}
return button;
}
This code is not working, i am getting 2 warnings on the line UIButton *b = [self findButtonInView:YouTubePlayer]; the warnings are :
Local declaration of 'YouTubePlayer' hides instance variable
'SecondViewController' may not respond to '-findButtonInView:'
You should call [YouTubePlayer view] in the findButtonInView-method.
In your SecondViewController.h-file, add the line - (UIButton *)findButtonInView:(UIView *)view;.
Related
I would like to customize the delete button which is shown when performing the 'swipe to left'-action on a tableview cell. I currently set up a subclass of a UITableViewCell but also want to customize the delete-button which is being shown.
My goal is to place three buttons when swiping.
I choose for another implementation where I was using a UIScrollview in each cell.
http://www.teehanlax.com/blog/reproducing-the-ios-7-mail-apps-interface/
Accepted answer will not work on iOS 7, as there is now UITableViewCellContentView in between. So subviews loop now should look like this(if you want to support older iOS versions too, use currently accepted answer for iOS 6.1-)
for (UIView *subview in self.subviews) {
for (UIView *subview2 in subview.subviews) {
if ([NSStringFromClass([subview2 class]) rangeOfString:#"Delete"].location != NSNotFound) {
// Do whatever you want here
}
}
}
This might help you.
- (void)willTransitionToState:(UITableViewCellStateMask)state
{
[super willTransitionToState:state];
if ((state & UITableViewCellStateShowingDeleteConfirmationMask) == UITableViewCellStateShowingDeleteConfirmationMask)
{
for (UIView *subview in self.subviews)
{
if ([NSStringFromClass([subview class]) isEqualToString:#"UITableViewCellDeleteConfirmationControl"])
{
UIImageView *deleteBtn = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 64, 33)];
[deleteBtn setImage:[UIImage imageNamed:#"arrow_left_s11.png"]];
[[subview.subviews objectAtIndex:0] addSubview:deleteBtn];
}
}
}
}
Referenced from:
Customize the delete button in UITableView
create custom delete button for uitableview
Custom Delete button On Editing in UITableView Cell
-(void)willTransitionToState:(UITableViewCellStateMask)state{
NSLog(#"EventTableCell willTransitionToState");
[super willTransitionToState:state];
if((state & UITableViewCellStateShowingDeleteConfirmationMask) == UITableViewCellStateShowingDeleteConfirmationMask)
{
UIImageView *deleteBtn = [[UIImageView alloc]initWithFrame:CGRectMake( 320,0, 228, 66)];
[deleteBtn setImage:[UIImage imageNamed:#"BtnDeleteRow.png"]];
[[self.subviews objectAtIndex:0] addSubview:deleteBtn];
[self recurseAndReplaceSubViewIfDeleteConfirmationControl:self.subviews];
[self performSelector:#selector(recurseAndReplaceSubViewIfDeleteConfirmationControl:) withObject:self.subviews afterDelay:0];
}
}
The solutions above didn't work for me for iOS 7, at - (void)willTransitionToState:, the delete button wasn't in the view heirarchy so I wasn't able to manipulate anything. I ended up doing everything on - (void)didTransitionToState:. The example below was specifically for when my cells had some spacing at the top so I'm altering the frame of the delete button. If you want to customize the delete button, you can just add a view on top of the delete button or replace it with your own UIButton
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
//your own stuff
//for some reason, editingAccessoryView cannot be nil and must have a non-CGRectZero frame
self.editingAccessoryView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 1, 1)];
}
return self;
}
- (void)didTransitionToState:(UITableViewCellStateMask)state
{
[super didTransitionToState:state];
if ((state & UITableViewCellStateShowingDeleteConfirmationMask) == UITableViewCellStateShowingDeleteConfirmationMask)
{
UIView *deleteButton = [self deleteButtonSubview:self];
if (deleteButton) {
CGRect frame = deleteButton.frame;
frame.origin.y += defined_padding;
frame.size.height -= defined_padding;
deleteButton.frame = frame;
}
}
}
- (UIView *)deleteButtonSubview:(UIView *)view
{
if ([NSStringFromClass([view class]) rangeOfString:#"Delete"].location != NSNotFound) {
return view;
}
for (UIView *subview in view.subviews) {
UIView *deleteButton = [self deleteButtonSubview:subview];
if (deleteButton) {
return deleteButton;
}
}
return nil;
}
How can I gain access to a UIAlertView button's titleLabel property? I've tried the following code:
for (UIView *view in action.subviews)
{
if([view isKindOfClass:[NSClassFromString(#"UIAlertButton") class]])
{
//Do something with title label font
}
}
try like this ,you can change the view.tag based on your requirement
- (void)willPresentAlertView:(UIAlertView *)alertView{
for(UIView *view in alertView.subviews)
if(([view isKindOfClass:[UIButton class]]) && (view.tag ==1)){
UIButton *btn = (UIButton *)view;
btn.titleLabel.text=#"your title";
}
}
I have the following code to change the appearance of the UISearchBar in my application and it can be seen in the image below also:
for(int i = 0; i < [[searchBar subviews] count]; i++){
UIView *subView = [[searchBar subviews] objectAtIndex:i];
if([[NSString stringWithFormat:#"%#", [subView class]] isEqualToString:#"UINavigationButton"]){
UIButton *cancelButton = (UIButton *)subView;
CGRect buttonFrame = cancelButton.frame;
buttonFrame.size.height = 52;
[cancelButton setFrame:buttonFrame];
[cancelButton setTitle:#"Cancel" forState:UIControlStateNormal];
[cancelButton setBackgroundImage:[UIImage imageNamed:#"cancel.png"] forState:UIControlStateNormal];
[cancelButton setBackgroundImage:[UIImage imageNamed:#"cancel_pressed.png"] forState:UIControlStateHighlighted];
}
}
As you can see I am trying to change the height of the button contained in the UISearchBar with no luck. I do get reference to the button as I can change the text and the background Image is changed just not the height of the frame. I would just like the height of the button to be the same as the search box at 52px.
EDIT:
I have found a really hacky solution, but it's not very elegant of adding a UIButton as the subview of the Cancel Button. It does the job but as I say it's not very nice.
Actually you could use method below to access the cancel Button:
UIBarButtonItem *cancelButton = [UIBarButtonItem appearanceWhenContainedIn:[UISearchBar class], nil];
So I override -layoutSubViews with this, but theres 2 issues I have
I hate iterating through the views to find the matching view, and it messes up the animation a little bit
- (UIButton *)cancelButton {
for (UIView *v in self.subviews) {
if ([v isKindOfClass:[UIButton class]]) {
NSString *caption = [[((UIButton *)v) titleLabel] text];
if ([caption isEqualToString:#"Cancel"] )
return (UIButton *)v;
}
}
return nil;
}
- (BOOL)cancelButtonIsShowing {
return ([self cancelButton] != nil);
}
- (void)layoutSubviews {
[super layoutSubviews];
if ([self cancelButtonIsShowing]) {
UIButton *cancelButton = [self cancelButton];
UIImage *i = [UIImage imageNamed:#"Cancel_BTN"];
CGRect f = CGRectMake(267, 5, i.size.width, i.size.height);
cancelButton.frame = f;
}
}
In my application I have to add a search bar at the head of the tableview. I am able to add the searchbar but problem is without adding default search bar of ios can i add my customize search bar?? I am giving an image to see what types of search bar will be there...
you can subclass the UISearchBar and override the layoutSubviews method :
- (void)layoutSubviews {
UITextField *searchField;
NSUInteger numViews = [self.subviews count];
for(int i = 0; i < numViews; i++) {
if([[self.subviews objectAtIndex:i] isKindOfClass:[UITextField class]]) { //conform?
searchField = [self.subviews objectAtIndex:i];
}
}
if(!(searchField == nil)) {
searchField.textColor = [UIColor whiteColor];
[searchField setBackground: [UIImage imageNamed:#"yourImage.png"] ];
[searchField setBorderStyle:UITextBorderStyleNone];
}
[super layoutSubviews];
}
Also you can :
//to clear searchbar backgraound
- (void) clearSearchBarBg
{
for (UIView *subview in theSearchBar.subviews)
{
if ([subview isKindOfClass:NSClassFromString(#"UISearchBarBackground")])
{
[subview removeFromSuperview];
break;
}
}
}
//display showSearchButtonInitially in a keyboard
- (void)showSearchButtonInitially
{
UIView * subview;
NSArray * subviews = [theSearchBar subviews];
for(subview in subviews)
{
if( [subview isKindOfClass:[UITextField class]] )
{
NSLog(#"setEnablesReturnKeyAutomatically");
[((UITextField*)subview) setEnablesReturnKeyAutomatically:NO];
((UITextField*)subview).delegate=self;
[((UITextField*)subview) setEnabled:TRUE];
((UITextField*)subview).borderStyle = UITextBorderStyleNone;
break;
}
}
}
Look for Apple DOC for UISearchBar
You have bunch of methods there to get whatever you want
You can get UITextView Inside the search bar by
UITextField *textField = [searchBar.subviews objectAtIndex:2];
if ([textField isKindOfClass:[UITextField class]]) {
//Do your customization
}
Again look for AppleDoc for UITextField. You have bunch of methods for that also.
Yeah definitely. You can make your custom search bar (which is a sub-class of UIView) and add it as subview to the tableHeaderView.
[[searchBarDesign.subviews objectAtIndex:0] removeFromSuperview];
here searchBarDesign is my searchBar name.
I think it's better just set all properties of UISearchBar when it is loaded.
#interface MySearchBar : UISearchBar
#end
#implementation MySearchBar
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self myInitialize];
}
return self;
}
-(void)awakeFromNib
{
[super awakeFromNib];
[self myInitialize];
}
-(void)myInitialize
{
self.backgroundImage = [UIImage imageNamed:#"image.png"];
for (UIView* subview in self.subviews) {
if ([subview isKindOfClass:[UITextField class]]) {
//customize text field
UITextField* textfield = (UITextField*) subview;
}
}
}
#end
how to set multiple buttons in UIScrollView and also how to set clicked action for particular button index?
UIScrollView *view = ..;
UIButton *button1 = ... ;
button1.tag = 1;
UIButton *button2 = ... ;
button1.tag = 2;
UIButton *button3 = ... ;
button1.tag = 3;
[view addSubview:button1];
[view addSubview:button2];
[view addSubview:button3];
In IBAction method check button tag to identify clicked button.
you can call this(initScrollView) method on viewDidLoad
- (void)viewDidLoad {
arrayScrollViewImages = [[NSArray alloc] initWithObjects:
[[MyKeyValuePair alloc] initWithKey:#"imagename1" withValue:#"imagename1.png"],
[[MyKeyValuePair alloc] initWithKey:#"imagename2" withValue:#"imagename2.png"],nil];
[self initScrollView];
}
here arrayScrollViewImages is NSArray
- (void) initScrollView
{
int width = 10;
for (int index = 0; index < [arrayScrollViewImages count]; index++) {
MyKeyValuePair *pair = [arrayScrollViewImages objectAtIndex:index];
UIImage *image = [UIImage imageNamed:pair.value];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:CGRectMake(width, 2, 34, 34)];
[button setBackgroundImage:image forState:UIControlStateNormal];
[button setTag:index];
[button addTarget:self action:#selector(scrollViewButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
if (index == 0) {
[button setBackgroundColor:[UIColor colorWithRed:0.59 green:0.38 blue:0.21 alpha:1.00]];
}
[scrollView addSubview:button];
width += 45;
}
scrollView.contentSize = CGSizeMake(width, 48);
scrollView.contentOffset = CGPointMake(0, 0);
}
- (void) scrollViewButtonTapped:(id)sender {
for (UIButton *b in scrollView.subviews) {
if ([b isKindOfClass:[UIButton class]]) {
[b setBackgroundColor:[UIColor clearColor]];
}
}
UIButton *button = (UIButton *) sender;
[button setBackgroundColor:[UIColor colorWithRed:0.59 green:0.38 blue:0.21 alpha:1.00]];
MyKeyValuePair *pair = [arrayScrollViewImages objectAtIndex:button.tag];
labelEspecialidad.text = pair.key;
}
here MyKeyValuePair is a one class
*MyKeyValuePair.h*
#interface MyKeyValuePair : NSObject {
NSString *key;
NSString *value;
}
// Properties
#property (nonatomic, retain) NSString *key;
#property (nonatomic, retain) NSString *value;
#end
MyKeyValuePair.m
#implementation MyKeyValuePair
#synthesize key, value;
- (id) initWithKey: (NSString *) _key withValue: (NSString *) _value {
if (self = [super init]) {
self.key = _key;
self.value = _value;
}
return self;
}
- (void) dealloc {
[super dealloc];
[self.key release];
[self.value release];
}
#end
Using XCode Interface Builder
Add buttons (select and drag&drop them from side objects panel)
Create IBAction for every button (in owner class .h and implement in .m)
Link buttons to actions via right mouse click&drag
See some video tutorials on youtube, such as
http://www.youtube.com/watch?v=WgAAvRQBrPc
http://www.youtube.com/watch?v=uAdmetwz7sc
http://www.youtube.com/watch?v=vixD-N6cbDY
and read Developer Guide
http://www.switchonthecode.com/tutorials/creating-your-first-iphone-application-with-interface-builder
http://developer.apple.com/library/ios/#documentation/IDEs/Conceptual/Xcode4TransitionGuide/InterfaceBuilder/InterfaceBuilder.html
You can use an array of buttons for that purpose. Assign a unique tag id to each button, and programmatically spread the buttons along the UIScrollView. Have the UIScrollView listen to the Touch Up Inside event, where you can then determine which button has been clicked by the unique tag ID.