I am using an Alert view to bring up a popup where the user will choose to either select a photo from the library or take a photo to use. The alert view comes up fine, but when I select a button the code I have implemented is not run?!?
for some reason the - (void)picturePopup:(UIAlertView *)picturePopup clickedButtonAtIndex:(NSInteger)buttonIndex does not seem to even get run!? I'm lost run over lots of tutorials and websites but can't see why?! please help!
code:
.m
#import "LoadViewController.h"
#implementation LoadViewController
int imageCase;
- (IBAction)pick:(id) sender {
imageCase = [sender tag];
UIAlertView *picturePopup = [[UIAlertView alloc]
initWithTitle:#"Select Photo" message:nil delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Choose From Library", #"Take Photo", nil];
[picturePopup show];
}
- (void)picturePopup:(UIAlertView *)picturePopup clickedButtonAtIndex:(NSInteger)buttonIndex {
NSLog(#"***************getting here****************");
if (buttonIndex == 1) {
NSLog(#"***************library****************");
//Library Picker
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentModalViewController:picker animated:YES];
}
if (buttonIndex == 2) {
NSLog(#"***************camera****************");
//Camera
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentModalViewController:picker animated:YES];
}
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo {
switch (imageCase) {
case 1:
imageView1.image = image;
break;
case 2:
imageView2.image = image;
break;
}
[picker.parentViewController dismissModalViewControllerAnimated:YES];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[picker.parentViewController dismissModalViewControllerAnimated:YES];
}
#end
.h
#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>
#interface LoadViewController : UIViewController <UINavigationControllerDelegate, UIImagePickerControllerDelegate, UIAlertViewDelegate> {
IBOutlet UIImageView *imageView1;
IBOutlet UIImageView *imageView2;
}
- (IBAction)pick:(id) sender;
#end
You need to use the actual delegate method:
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
This is not the same as:
- (void)picturePopup:(UIAlertView *)picturePopup clickedButtonAtIndex:(NSInteger)buttonIndex
The method signatures are different. alertView:clickedButtonAtIndex: vs. picturePopup:clickedButtonAtIndex:
You can rename the variable you just can not change the method signature.
This is sort of off topic, but I notice you didn't synthesize *imageView1 and *imageView2. lol
Related
want to get input from pickerView in textField when alert show Objective C
NOTE: Opening actionsheet from alertview first dismiss your alertview then open actionsheet.My code may help you regarding opening actionsheet from alertview
#import "ViewController.h"
#interface ViewController ()<UITextFieldDelegate,UIActionSheetDelegate>
{
NSString *alertSelectValue;
UITextField * alertTextField;
}
#end
#implementation ViewController
- (void)viewDidLoad {
UIAlertView * alert = [[UIAlertView alloc] initWithTitle:#"Hello!" message:#"Please enter your name:" delegate:self cancelButtonTitle:#"Continue" otherButtonTitles:nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
UITextField * alertTextField = [alert textFieldAtIndex:0];
alertTextField.tag=101;
alertTextField.delegate=self;
alertTextField.keyboardType = UIKeyboardTypeNumberPad; alertTextField.placeholder = #"Enter your name";
[alert show];
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
if (textField.tag==101)
{
[textField setUserInteractionEnabled:YES];
[textField resignFirstResponder];
NSString*String = [NSString stringWithFormat:#"%#",textField.text];
[self openSheet:String];
}
}
-(void)openSheet:(NSString*)text
{
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:#"Select" delegate:self cancelButtonTitle:#"OK" destructiveButtonTitle:nil otherButtonTitles:text,#"Test" ,nil];
actionSheet.actionSheetStyle = UIActionSheetStyleDefault;
UIViewController *topvc=[self topMostController];
[actionSheet showInView:topvc.view];
}
//-------- Get top Most view to -----
- (UIViewController*) topMostController
{
UIViewController *topController = [UIApplication sharedApplication].keyWindow.rootViewController;
while (topController.presentedViewController) {
topController = topController.presentedViewController;
}
return topController;
}
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSLog(#"Index = %d - Title = %#", buttonIndex, [actionSheet buttonTitleAtIndex:buttonIndex]);
if(buttonIndex == 0)
{
alertTextField.text= [actionSheet buttonTitleAtIndex:buttonIndex];
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
Im trying to use split view controllers for iphone but when i add the code for AppDelegate.m as below, i get the error. My app also utilises a login system using file LoginVC and that file was working fine before.
[Storyboard image here][1]: https://i.stack.imgur.com/GRosR.png
#import "AppDelegate.h"
#import "RightVC.h"
#import "LeftVC.h"
#interface AppDelegate ()
#end
#implementation AppDelegate
(BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
UISplitViewController *splitViewController = (UISplitViewController
*)self.window.rootViewController;
UINavigationController *leftNavController =
[splitViewController.viewControllers objectAtIndex:0];
LeftVC *leftViewController = (LeftVC *)[leftNavController
topViewController];
RightVC *rightViewController = [splitViewController.viewControllers
objectAtIndex:1];
Recipe *firstRecipe = [[leftViewController recipes] objectAtIndex:0];
[rightViewController setRecipe:firstRecipe];
return YES;
}
And my LoginVC.m
#import "LoginVC.h"
#interface LoginVC ()
#end
#implementation LoginVC
- (void)viewDidLoad {
[super viewDidLoad];
self.checkLogin = [[LoginService alloc]init];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void) alertStatus:(NSString *)msg :(NSString *) title: (int) tag {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:title
message:msg delegate:self cancelButtonTitle:#"Ok" otherButtonTitles:nil,
nil];
alertView.tag = tag;
[alertView show];
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little
preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
- (IBAction)btnLogin:(id)sender {
if([self.txtUsername.text isEqualToString:#""] || [self.txtPassword.text
isEqualToString:#""]) {
[self alertStatus:#"Username and/or Password cannot be blank!"
:#"Sign in Failed" :0];
} else{
self.checkLogin.strUsername = self.txtUsername.text;
self.checkLogin.strPassword = self.txtPassword.text;
BOOL lgs = self.checkLogin.success;
if(lgs==1){
[self performSegueWithIdentifier:#"ShowMain" sender:self];
}else{
[self alertStatus:#"Wrong Username and/or Password!" :#"Sign in
Failed":0];
}
}
}
-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[self.txtUsername resignFirstResponder];
[self.txtPassword resignFirstResponder];
[[self.view window] endEditing:YES];
}
#end
Been trying to fix but all i have are a few split view guides on the net
so I'm new to iOS development and I'm trying to delegate the button click event to another class. Whenever I click a button on the alert, the app crashes and I get an error saying Thread_1 EXC_BAD_ACCESS.
This is my code.
// theDelegateTester.h
#import <UIKit/UIKit.h>
#interface theDelegateTester : UIResponder <UIAlertViewDelegate>
- (void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex;
#end
Implementation..
// theDelegateTester.m
#import "theDelegateTester.h"
#implementation theDelegateTester
- (void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
NSLog(#"Delegated");
}
#end
And here's the implementation for my view file..
#import "appleTutorialViewController.h"
#import "theDelegateTester.h"
#interface appleTutorialViewController ()
- (IBAction)tapReceived:(id)sender;
#end
#implementation appleTutorialViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (IBAction)tapReceived:(id)sender {
theDelegateTester *newTester = [[theDelegateTester alloc] init];
UIAlertView *myAlert = [[UIAlertView alloc] initWithTitle:#"Alert!" message:#"This is a delegated alert" delegate:newTester cancelButtonTitle:#"Close" otherButtonTitles:#"Cool!", nil];
[myAlert show];
}
#end
First of all, you should always start your class names with a capital letter, so you can differentiate between classes and instances or methods easily.
And you probably leak the delegate class. You should declare a strong/retained property TheDelegateTester *myDelegate in your view controller. Then in tapReceived: something like this:
- (IBAction)tapReceived:(id)sender {
if (!self.myDelegate) {
TheDelegateTester *del = [[TheDelegateTester alloc] init];
self.myDelegate = del;
[del release];
}
UIAlertView *myAlert = [[UIAlertView alloc] initWithTitle:#"Alert!" message:#"This is a delegated alert" delegate:newTester cancelButtonTitle:#"Close" otherButtonTitles:#"Cool!", nil];
[myAlert show];
[myAlert release];
}
I want to know, how can I change my image app background using camera roll images. Any ideas??? How to get the camera roll paths or something like that!!!
Thanks!!!!
the following code uses a button on a toolbar, when pressed it will bring up the camera roll and then u will be able to pick the image to set
Start by adding the MobileCoreServices framework
add the following code in the .h file
#import <UIKit/UIKit.h>
#import <MobileCoreServices/MobileCoreServices.h>
#interface cameraViewController : UIViewController
<UIImagePickerControllerDelegate,
UINavigationControllerDelegate, UIPopoverControllerDelegate>
#property (nonatomic) BOOL newMedia;
#property (nonatomic, strong) IBOutlet UIImageView *imageView;
#property (nonatomic, strong) UIPopoverController *popoverController;
#property (nonatomic, strong) IBOutlet UIToolbar *toolbar;
- (IBAction)useCameraRoll: (id)sender;
#end
Add the following code in the .m file:
#synthesize imageView, popoverController, toolbar, newMedia;
- (IBAction) useCameraRoll: (id)sender
{
if ([self.popoverController isPopoverVisible]) {
[self.popoverController dismissPopoverAnimated:YES];
} else {
if ([UIImagePickerController isSourceTypeAvailable:
UIImagePickerControllerSourceTypeSavedPhotosAlbum])
{
UIImagePickerController *imagePicker =
[[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType =
UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.mediaTypes = [NSArray arrayWithObjects:
(NSString *) kUTTypeImage,
nil];
imagePicker.allowsEditing = NO;
self.popoverController = [[UIPopoverController alloc]
initWithContentViewController:imagePicker];
self.popoverController.delegate = self;
[self.popoverController
presentPopoverFromBarButtonItem:sender
permittedArrowDirections:UIPopoverArrowDirectionUp
animated:YES];
newMedia = NO;
}
}
}
#pragma mark -
#pragma mark UIImagePickerControllerDelegate
-(void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[self.popoverController dismissPopoverAnimated:true];
NSString *mediaType = [info
objectForKey:UIImagePickerControllerMediaType];
[self dismissModalViewControllerAnimated:YES];
if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
UIImage *image = [info
objectForKey:UIImagePickerControllerOriginalImage];
self.imageView.image = image;
if (newMedia)
UIImageWriteToSavedPhotosAlbum(image,
self,
#selector(image:finishedSavingWithError:contextInfo:),
nil);
}
else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie])
{
// Code here to support video if enabled
}
}
-(void)image:(UIImage *)image
finishedSavingWithError:(NSError *)error
contextInfo:(void *)contextInfo
{
if (error) {
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle: #"Save failed"
message: #"Failed to save image"
delegate: nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
}
}
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[self dismissModalViewControllerAnimated:YES];
}
Add the following in viewDidUnload:
- (void)viewDidUnload {
self.imageView = nil;
self.popoverController = nil;
self.toolbar = nil;
}
Dont forget to connect the imageview to your image and the cameraroll button to your button.
Check the docs for Assets Library.
-(void) uourCallingMethod{
UIImage *img = [UIImage imageNamed: [NSString stringWithFormat:#"image.jpg", i]];
UIImageWriteToSavedPhotosAlbum(img, nil, nil, nil);
}
(void) image:(UIImage *)image didFinishSavingWithError:(NSError *) error contextInfo:(void *) contextInfo{
}
I'm trying to reuse code, I have some tutorial view controllers / views, which I would like to call from an action sheet. However, the calling views are different. Sometimes the tutorial view(s) would need to be added as a subview and sometimes they would be added to the navigation controller.
How can I expand my standard function to cater for these two different situations ?
You can see what I'm having to do instead, which means duplicate code :(
I have a class called which holds the standard code, I want to add calls to views here directly.
-(void)showHelpClickButtonAtIndex:(int)buttonIndex:(UIView *)vw {
if (buttonIndex == CommonUIHelpPagesBtnIdx) {
// do nothing
} else if (buttonIndex == 0) {
NSLog(#"Tutorial here");
}
}
I use in one view like this ...
- (void)actionSheet:(UIActionSheet *)actionSheet
clickedButtonAtIndex:(NSInteger)buttonIndex {
CommonUI *cui = [CommonUI alloc];
[cui showHelpClickButtonAtIndex:buttonIndex:self.view];
[cui release];
if (buttonIndex == CommonUIHelpPagesBtnIdx) {
UIViewController *theController = [[HelpViewController alloc]
initWithNibName:#"HelpView"
bundle:nil onPage:HelpPageCalcBalance];
[self.navigationController.topViewController
presentModalViewController:theController animated:YES];
[theController release];
}
}
And is another view like this...
- (void)actionSheet:(UIActionSheet *)actionSheet
clickedButtonAtIndex:(NSInteger)buttonIndex {
[cui showHelpClickButtonAtIndex:buttonIndex:self.view];
if (buttonIndex == CommonUIHelpPagesBtnIdx) {
theController = [[HelpViewController alloc] initWithNibName:#"HelpView"
bundle:nil onPage:HelpPageGettingStarted];
[self.view addSubview:theController.view];
}
}
Maybe the actionSheets could share one same delegate that would be a root viewController or the appDelegate that would know what to do according to it's current state. Hence the same actionSheet method would be used in both case.
If you put your appDelegate which can always be reached as the actionSheetDelegate, you should be able to gain control on every way to present your view, either modally or not in any of your views + the window.
EDIT (re-Edited with your code): Maybe try this
MyAppDelegate.h:
#interface MyAppAppDelegate : NSObject <UIApplicationDelegate, UIActionSheetDelegate>
(...)
- (void) showHelp;
MyAppDelegate.m:
- (void) showHelp {
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:#""
delegate:self
cancelButtonTitle:#"Cancel"
destructiveButtonTitle:nil
otherButtonTitles: #"Tutorial", #"Help Pages", nil];
actionSheet.actionSheetStyle = UIActionSheetStyleBlackOpaque;
[actionSheet showInView:window];
[actionSheet release];
}
- (void)actionSheet:(UIActionSheet *)actionSheet
clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == CommonUIHelpPagesBtnIdx) {
UIViewController *theController = [HelpViewController alloc];
if ([[self lvc] superview] != nil) {
theController = [initWithNibName:#"HelpView"
bundle:nil
onPage:HelpPageGettingStarted];
[window addSubview:theController.view];
} else {
theController = [initWithNibName:#"HelpView"
bundle:nil
onPage:HelpPageCalcBalance];
UINavigationController * navController = [tabBarController selectedViewController];
[navController.topViewController presentModalViewController:theController animated:YES];
}
[theController release];
}
}
and in your viewControllers:
- (void)viewDidLoad {
[super viewDidLoad];
MyAppDelegate *delegate = (MyAppDelegate *) [[UIApplication sharedApplication] delegate];
UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeInfoLight];
[infoButton addTarget:delegate
action:#selector(showHelp)
forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *infoItem = [[UIBarButtonItem alloc] initWithCustomView:infoButton];
self.navigationItem.rightBarButtonItem = infoItem;
[infoItem release];
}
Didn't try it but it should work.