I am having issues not being able to close CDVViewController when calling this custom refresh, it stays loaded in the background and loads a new one causing memory leaks/high memory usage. I have tried to use both release and removeFromSuperview for the webView, subview, CDVViewController, ChildViewController but none of them work. I am running a Tab Bar Controller via Storyboard, (another reason why I have to call CDVViewController as a subview) and when I use the web inspector via safari I can see the pages building up on that tab, and when I refresh on another tab (not using CDVViewController/phonegap) it works fine. Any help is much appreciated.
So here is my .h
#import <UIKit/UIKit.h>
#import <ifaddrs.h>
#import <arpa/inet.h>
#import <Cordova/CDVViewController.h>
#interface ThirdViewController : CDVViewController <UIWebViewDelegate>
{
IBOutlet CDVViewController *webView;
IBOutlet UIActivityIndicatorView *activityind;
}
- (IBAction)Refresh:(id)sender;
#end
And my .m
#interface ThirdViewController ()
#end
#implementation ThirdViewController
- (void)viewDidLoad
{
webView = [CDVViewController new];
webView.startPage = #"MYWEBSITE";
[self addChildViewController:webView];
[self.webView addSubview:webView.view];
webView.view.frame = CGRectMake(0, 0, 0, 0);
[activityind startAnimating];
[self.webView addSubview: activityind];
[self CustomActivity];
}
-(void) CustomActivity
{
if ([webView.reference isEqualToString:#"TRUE"]){ //webView.reference is something I added into phonegap CDVViewController so that I am able to see when it is being loaded/used to load the custom activity/activity ind to work.
[activityind removeFromSuperview];
}else{
[NSTimer scheduledTimerWithTimeInterval:.5 target:self selector:#selector(CustomActivity) userInfo:nil repeats:NO];
}
}
- (IBAction)Refresh:(id)sender {
webView = [CDVViewController new];
webView.startPage = #"MYWEBSITE";
[self addChildViewController:webView];
[self.webView addSubview:webView.view];
webView.view.frame = CGRectMake (0,0,self.view.frame.size.width,(self.view.frame.size.height -44));
[activityind startAnimating];
[self.webView addSubview: activityind];
[self CustomActivity];
}
- (void)webViewDidStartLoad:(UIWebView *)webView {}
- (void)webViewDidFinishLoad:(UIWebView *)subview {}
- (void)loading {}
- (void)didReceiveMemoryWarning{[super didReceiveMemoryWarning];}
#end
Found the solution, I had to implement [webView.webView reload];
- (IBAction)Refresh:(id)sender {
[webView.webView reload];
}
Related
I'm creating a web App for iOS and I have a custom keyboard. When I use the default keyboard, it immediately shows the keyboard and the text field is above the keyboard. I would have the same result if I change the keyboard to my custom keyboard. But the problem is for the time that I gives the focus to the text field when my custom keyboard is enabled. It has some delay to load and when it loads, text field stays under the keyboard. Here is my code for custom keybaord:
#import "KeyboardViewController.h"
#import "CustomKeyboardView.h"
#interface KeyboardViewController () <CustomKeyboardViewDelegate>
#property (nonatomic, strong) CustomKeyboardView *customKeyboardView;
#end
#implementation KeyboardViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.customKeyboardView = [[CustomKeyboardView alloc] init];
self.inputView = (UIInputView *) self.customKeyboardView;
self.customKeyboardView.delegate = self;
}
- (void)handleCharacter:(NSString *)character sender:(CustomKeyboardView *)sender
{
[self.textDocumentProxy insertText:character];
}
-(void)handelDelete:(CustomKeyboardView *)sender
{
[self.textDocumentProxy deleteBackward];
}
-(void)handleDismissKeyboard:(CustomKeyboardView *)sender
{
[self dismissKeyboard];
}
-(void)handleChangeKeyboard:(CustomKeyboardView *)sender
{
[self advanceToNextInputMode];
}
- (void)textWillChange:(id<UITextInput>)textInput {
// The app is about to change the document's contents. Perform any preparation here.
}
- (void)textDidChange:(id<UITextInput>)textInput {
// The app has just changed the document's contents, the document context has been updated.
[[NSNotificationCenter defaultCenter] postNotificationName:UITextViewTextDidChangeNotification object:textInput];
}
#end
The implementation of CustomKeyboardView class is similar to this library. Any help would be appreciated.
Try use the background threads, you have a delay because u execute a lot of code before you build your keyboard view first.
I know this sound a very simple question. I'm still a newbie in iPad app development. Would you please tell me how would I update the contents in the run time. The following code may be helpful to know my question in detail.
In the following code, I'm trying to display text contents in the TexViewcontrol. When I change the for loop form 10 to 100000, I needed to wait until everything fills up. I need to display the contents on the screen while loop is running.
- (IBAction)RunHelloWorld:(id)sender
{
tctView.text = #"tt";
for(int i=0;i<10;i++)
{
NSString *result1 = #"Testing";
tctView.text = [tctView.text stringByAppendingString:result1];
tctView.scrollEnabled = YES;
}
}
Would you please give me any help? Thanks a LOT!!!
-Teva
Finally I found the solution with the following URL's help. http://samplecodebank.blogspot.com/2011/05/nsthread-example_12.html
Thanks a LOT!
This is my code.
PCViewController.h file code
#import <UIKit/UIKit.h>
#interface PCViewController : UIViewController
{
IBOutlet UITextView *txtView;
}
-(void)ReadFile;
- (void) mainThreadSetText:(NSString*)text;
#end
PCViewController.m file code
#import "PCViewController.h"
#interface PCViewController ()
#end
#implementation PCViewController
- (void)viewDidLoad
{
[super viewDidLoad];
[NSThread detachNewThreadSelector:#selector(ReadFile) toTarget:self withObject:nil];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
-(void)ReadFile
{
// Check whether current thread is externally terminated or not.
char line[1024];
FILE *fp = fopen("/Users/Teva/Desktop/File1.txt","r");
while([[NSThread currentThread] isCancelled] == NO)
{
if( fp != NULL )
{
while( fgets(line,1024,fp) )
{
printf("%s\n",line);
NSString *result1 = [NSString stringWithCString:line encoding:NSASCIIStringEncoding];
[self performSelectorOnMainThread:#selector(mainThreadSetText:) withObject:result1 waitUntilDone:YES];
[NSThread sleepForTimeInterval:1.0];
}
}
}
}
// Screen processing should be done outside the Thread.
- (void) mainThreadSetText:(NSString*)text
{
txtView.text = [txtView.text stringByAppendingString:text];
txtView.scrollEnabled = YES;
}
- (void)dealloc
{
[txtView release];
[super dealloc];
}
#end
Version 4.3.2 of XCODE.
This is causing me no end of headaches trying to figure out how to do the tutorial. I have checked the code against their code and it looks right. I downloaded someones else's copy and it works but with my copy done and cancel do not work.
AddSightingViewController.m code looks like this
#import "AddSightingViewController.h"
#implementation AddSightingViewController
...
- (IBAction)cancel:(id)sender {
[[self delegate] addSightingViewControllerDidCancel:self];
}
- (IBAction)done:(id)sender {
[[self delegate] addSightingViewControllerDidFinish:self name:self.birdNameInput.text location:self.locationInput.text];
}
...
And debug checkpoints on these lines work correctly
However in BirdsMasterViewController.m I have the following code:
#import "BirdsMasterViewController.h"
#import "BirdsDetailViewController.h"
#import "BirdSightingDataController.h"
#import "BirdSighting.h"
#import "AddSightingViewController.h"
#interface BirdsMasterViewController () <AddSightingViewControllerDelegate>
#end
#implementation BirdsMasterViewController
#synthesize dataController = _dataController;
...
- (void)addSightingViewControllerDidCancel:(AddSightingViewController *)controller {
[self dismissViewControllerAnimated:YES completion:NULL];
}
- (void)addSightingViewControllerDidFinish:(AddSightingViewController *)controller name:(NSString *)name location:(NSString *)location {
if ([name length] || [location length]) {
[self.dataController addBirdSightingWithName:name location:location];
[[self tableView] reloadData];
}
[self dismissModalViewControllerAnimated:YES];
}
...
and debug checkpoints on these lines never stop the program on my code (but do on the downloaded code).
What in the heck am I missing to get this to work.
I have an application with UITabBarController, where the first tab contains a ViewController of an HomePage. What I have to do, is to switch between the tabs (this is pretty simple: [[self tabBarController] setSelectedIndex:index]), AND to navigate through outlets of the selectedTab from the "HomePage".
Just to explain myself: TabElement1--->TabElementX---->UISegmentedController:segmentY
The problem is that the UISegmentedController is nil because it is not initialized yet (at least the first time I do the operation). How should I fix this problem? The tab elements are loaded with nibs.
EDIT-- Here's some code:
#implementation HomeViewController // Tab Indexed 0
// ...
- (void)playVideoPreview {
NSArray *array;
array = [[self tabBarController] viewControllers];
// This is a test where I programmatically select the tab AND the switch.
[[[array objectAtIndex:2] switches] setSelectedSegmentIndex:1];
[[self tabBarController] setViewControllers:array];
}
#end
#implementation TGWebViewController // Tab Indexed 2
// ...
#synthesize switches; // In .h file: #property (nonatomic, retain) IBOutlet UISegmentedControl switches; Properly linked within the XIB.
- (IBAction)switchHasChangedValue {
// Foo operations.
}
Now the first time I fire playVideoPreview I manage to get Into the Tab Indexed 2, TGWebViewController, but switches doesn't exists yet, so I find myself with the segmentedControl named "switches" with the first segment selected. If I get back to HomeViewController, then I fire again playVideoPreview, I get the correct behaviour.
I've fixed the problem using the delegates and a boolean. Now, when the loading of the ViewController at index 2 of TabBar is finished, it sends a message to its delegate which tells what segment has to be selected.
EDIT Here's the code (hope it helps):
// Method in the first View that asks to tab the tab bar to launch the other
// view controller
- (void)playVideoPreview {
NSArray *array;
array = [[self tabBarController] viewControllers];
if ( ![[array objectAtIndex:2] catSwitch] ) {
[[array objectAtIndex:2] setDelegate:self];
[[array objectAtIndex:2] setHasBeenLaunchedByDelegate:YES];
} else {
[self selectTab];
}
[[self tabBarController] setViewControllers:array];
[[self tabBarController] setSelectedIndex:2];
}
// Now the operations performed by the second View Controller
- (void)somewhereInYourCode {
if ( hasBeenLaunchedByDelegate ) {
[[self delegate] selectTab];
}
}
// In the First View Controller this is the delegate method,
// launched from the Second View Controller
- (void)selectTab {
NSArray *array;
array = [[self tabBarController] viewControllers];
[[[array objectAtIndex:2] catSwitch] setSelectedSegmentIndex:[[bannerPreview pageControl] currentPage]];
}
// Some declaration
#protocol SecondViewControllerDelegate;
class SecondViewController : ViewController {
id<TGWebViewControllerDelegate> delegate;
}
#end
#protocol SecondViewControllerDelegate
- (void)selectTab;
#end
// Meanwhile in the first view
class FirstViewController : ViewController <SecondViewControllerDelegate> {
// ...
}
I want to display login window and then type login and password credencial it will open the account. So i tried but it shows error like
/81: error: 'didReceiveMemoryWarning' undeclared (first use in this function)
*:81: error: expected ';' before '{' token*
100: error: expected declaration or statement at end of input
and i posted below the code please help
Thanks in advance
.h file
#import <UIKit/UIKit.h>
#interface Password1ViewController : UIViewController {
UITextField *textfieldName;
UITextField *textfieldPassword;
}
#property (nonatomic, retain) IBOutlet UITextField *textfieldName;
#property (nonatomic, retain) IBOutlet UITextField *textfieldPassword;
#end
.m file
#import "Password1ViewController.h"
#implementation Password1ViewController
#synthesize textfieldName;
#synthesize textfieldPassword;
-(void)alertView:(UIAlertView *)alertview clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex != [alertview cancelButtonIndex])
{
NSLog(#"Name: %#", textfieldName.text);
NSlog(#"Name: %#", textfieldPassword.text);
}
}
-(void) someMethod
{
UIAlertView *alert =[[UIAlertView alloc] initWithTitle:#"Please Login" message:#"" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Submit",nil];
[alert addTextFieldWithValue:#"" label:#"User Name"];
[alert addTextFieldWithValue:#"" label:#"Password"];
textfieldName = [alert textFieldAtIndex:0];
textfieldName.keyboardType = UIKeyboardTypeAlphabet;
textfieldName.keyboardAppearance = UIKeyboardAppearanceAlert;
textfieldName.autocorrectionType = UITextAutocorrectionTypeNo;
textfieldPassword = [alert textFieldAtIndex:1];
textfieldPassword.clearButtonMode = UITextFieldViewModeWhileEditing;
textfieldPassword.keyboardType = UIKeyboardTypeNumbersAndPunctuation;
textfieldPassword.keyboardAppearance = UIKeyboardAppearanceAlert;
textfieldPassword.autocorrectionType = UITextAutocorrectionTypeNo;
textfieldPassword.secureTextEntry = YES;
[alert show];
}
/*
// The designated initializer. Override to perform setup that is required before the view is loaded.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) {
// Custom initialization
}
return self;
}
*/
/*
// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView {
}
*/
/*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
}
*/
/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[textfieldName release];
[textfieldPassword release];
[super dealloc];
}
#end
You were missing a closing brace which I corrected in my edit. So, try now with the edited code.