2014/10/15 下午 10:13:04
iphone Programming Glossary: puttingSetting action for back button in navigation controller http://stackoverflow.com/questions/1214965/setting-action-for-back-button-in-navigation-controller iphone cocoa touch uinavigationcontroller uibarbuttonitem share improve this question Try putting this into the view controller where you want to detect the press void viewWillDisappear BOOL animated..
How do I change the title of the “back” button on a Navigation Bar http://stackoverflow.com/questions/1449339/how-do-i-change-the-title-of-the-back-button-on-a-navigation-bar is pressed back button . I want to change the text shown on the button to something else. I tried putting the following line of code in the view controller's viewDidLoad method but it doesn't seem to work...
How to add a UIImage in MailComposer Sheet of MFMailComposeViewController http://stackoverflow.com/questions/1527351/how-to-add-a-uiimage-in-mailcomposer-sheet-of-mfmailcomposeviewcontroller like Gmail would strip out your image data but there's a simple workaround for that... just putting b and b tags around your img ... tag is all you need to do to keep it from getting stripped out. In..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults some data. I make objects for this class and I need to them to last between sessions. Before I was putting all my information in NSUserDefaults but this isn't working. NSUserDefaults setObject forKey Attempt..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz who has done my testing PDF had just inserted an URL as text and not a real annotation. He tried putting an annotation and my code works now... But that's not what I need so it seems I'll have to analyze text..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers just hacking it together. First I agree with the previous answers which focus on the importance of putting data in model objects when appropriate per the MVC design pattern . Usually you want to avoid putting.. data in model objects when appropriate per the MVC design pattern . Usually you want to avoid putting state information inside a controller unless it's strictly presentation data. Second see page 10 of..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root explicitly prohibited even when it seems to work fine. Anyone know the reason I've thought about putting the tab bar controller as the main controller with each of the tabs containing separate navigation controllers...
Setting action for back button in navigation controller http://stackoverflow.com/questions/1214965/setting-action-for-back-button-in-navigation-controller always called when leaving a view viewDidUnload doesn't do that iphone cocoa touch uinavigationcontroller uibarbuttonitem share improve this question Try putting this into the view controller where you want to detect the press void viewWillDisappear BOOL animated if self.navigationController.viewControllers indexOfObject..
How do I change the title of the “back” button on a Navigation Bar http://stackoverflow.com/questions/1449339/how-do-i-change-the-title-of-the-back-button-on-a-navigation-bar one in other words the view to be shown when the button is pressed back button . I want to change the text shown on the button to something else. I tried putting the following line of code in the view controller's viewDidLoad method but it doesn't seem to work. self.navigationItem.leftBarButtonItem.title @ Log Out What should..
How to add a UIImage in MailComposer Sheet of MFMailComposeViewController http://stackoverflow.com/questions/1527351/how-to-add-a-uiimage-in-mailcomposer-sheet-of-mfmailcomposeviewcontroller sure exactly what the size is . The problem is that mail clients like Gmail would strip out your image data but there's a simple workaround for that... just putting b and b tags around your img ... tag is all you need to do to keep it from getting stripped out. In order to get an image into your email you need to get a base64..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults know how to fix it. I have made a custom class to hold some data. I make objects for this class and I need to them to last between sessions. Before I was putting all my information in NSUserDefaults but this isn't working. NSUserDefaults setObject forKey Attempt to insert non property value ' Player 0x3b0cc90 ' of class..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz possibly with sample code Update I just realized the guy who has done my testing PDF had just inserted an URL as text and not a real annotation. He tried putting an annotation and my code works now... But that's not what I need so it seems I'll have to analyze text and search for URLs. But that's another story... Update..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers seem concerned with learning how to do it right instead of just hacking it together. First I agree with the previous answers which focus on the importance of putting data in model objects when appropriate per the MVC design pattern . Usually you want to avoid putting state information inside a controller unless it's strictly.. the previous answers which focus on the importance of putting data in model objects when appropriate per the MVC design pattern . Usually you want to avoid putting state information inside a controller unless it's strictly presentation data. Second see page 10 of the Stanford presentation for an example of how to programmatically..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root private APIs and the like but I'm not sure why this usage is explicitly prohibited even when it seems to work fine. Anyone know the reason I've thought about putting the tab bar controller as the main controller with each of the tabs containing separate navigation controllers. The problem with this is that each nav controller..
How does the iOS app Display Recorder record the screen without using private API? http://stackoverflow.com/questions/11090184/how-does-the-ios-app-display-recorder-record-the-screen-without-using-private-ap I've been an iOS developer for awhile and I'm a bit stumped at how this was even done even down to the detail of putting the red bar at the top when outside of the app. I was under the impression we basically had no control of what's happening..
Setting action for back button in navigation controller http://stackoverflow.com/questions/1214965/setting-action-for-back-button-in-navigation-controller doesn't do that iphone cocoa touch uinavigationcontroller uibarbuttonitem share improve this question Try putting this into the view controller where you want to detect the press void viewWillDisappear BOOL animated if self.navigationController.viewControllers..
How do I change the title of the “back” button on a Navigation Bar http://stackoverflow.com/questions/1449339/how-do-i-change-the-title-of-the-back-button-on-a-navigation-bar when the button is pressed back button . I want to change the text shown on the button to something else. I tried putting the following line of code in the view controller's viewDidLoad method but it doesn't seem to work. self.navigationItem.leftBarButtonItem.title..
How to add a UIImage in MailComposer Sheet of MFMailComposeViewController http://stackoverflow.com/questions/1527351/how-to-add-a-uiimage-in-mailcomposer-sheet-of-mfmailcomposeviewcontroller is that mail clients like Gmail would strip out your image data but there's a simple workaround for that... just putting b and b tags around your img ... tag is all you need to do to keep it from getting stripped out. In order to get an image..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults class to hold some data. I make objects for this class and I need to them to last between sessions. Before I was putting all my information in NSUserDefaults but this isn't working. NSUserDefaults setObject forKey Attempt to insert non property..
Multiple Row Selection in UIPickerView http://stackoverflow.com/questions/2903004/multiple-row-selection-in-uipickerview
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz just realized the guy who has done my testing PDF had just inserted an URL as text and not a real annotation. He tried putting an annotation and my code works now... But that's not what I need so it seems I'll have to analyze text and search for URLs...
iOS 4.2 - Return to app after phone call http://stackoverflow.com/questions/5028329/ios-4-2-return-to-app-after-phone-call that stays in the foreground. There doesn't seem to be anything you can do about this at the moment. It might be worth putting in a feature request to allow for a modal phone call similar to MFMessageComposer that allows you to send emails sms within..
Recreate recipient bubble behaviour in Mail.app / Three20 http://stackoverflow.com/questions/5247072/recreate-recipient-bubble-behaviour-in-mail-app-three20 it was two years ago and now I can't find it with Google. Basically you're picking a color drawing the round endcaps putting a rectangle between them and then putting the required text over the top. UIGraphicsBeginImageContext CGSizeMake SIDELENGTH.. it with Google. Basically you're picking a color drawing the round endcaps putting a rectangle between them and then putting the required text over the top. UIGraphicsBeginImageContext CGSizeMake SIDELENGTH SIDELENGTH CGContextRef context UIGraphicsGetCurrentContext..
Changing the size of the UISearchBar TextField? http://stackoverflow.com/questions/556814/changing-the-size-of-the-uisearchbar-textfield share improve this question it's much easier than all these suggestions. In interface builder instead of putting the Search Bar as the header of your Table View you can put a View instead. Then put a Navigation Bar inside this View...
How to record and play sound in iPhone app? http://stackoverflow.com/questions/5662297/how-to-record-and-play-sound-in-iphone-app AVAudioSession and AVAudioPlayer to record and play sounds respectively but the sound volume is very low. I tried putting volume value of AVAudioPlayer to 1.0 and more but didnt help much. What could be my other options to record sound which..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers it right instead of just hacking it together. First I agree with the previous answers which focus on the importance of putting data in model objects when appropriate per the MVC design pattern . Usually you want to avoid putting state information.. importance of putting data in model objects when appropriate per the MVC design pattern . Usually you want to avoid putting state information inside a controller unless it's strictly presentation data. Second see page 10 of the Stanford presentation..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root why this usage is explicitly prohibited even when it seems to work fine. Anyone know the reason I've thought about putting the tab bar controller as the main controller with each of the tabs containing separate navigation controllers. The problem..
What is the AppDelegate for and how do I know when to use it? http://stackoverflow.com/questions/652460/what-is-the-appdelegate-for-and-how-do-i-know-when-to-use-it for and how do I know when to use it I'm just beginning to work on iPhone apps. How do I know when I should be putting stuff in the appdelegate versus a custom class Is there a rule or any type of analogy with another programming language.. on startup configuration and construction applicationWillTerminate good for cleaning up at the end You should avoid putting other functionality in the AppDelegate since they don't really belong there. Such other functionality includes Document..
Secure https encryption for iPhone app to webpage http://stackoverflow.com/questions/9181186/secure-https-encryption-for-iphone-app-to-webpage a challenge response system where the server authenticates that the client has the shared secret without ever putting it on the wire. The Wikipedia article on Challenge resonse authentication includes a good explanation of the algorithm...
Static string variable in Objective C on iphone http://stackoverflow.com/questions/980083/static-string-variable-in-objective-c-on-iphone is what I think you're looking for. You can kinda fake it with static variables as you're doing. I would recommend putting the static NSString in the implementation file of your class and provide class methods to access mutate it. Something like..
Putting different elements in individual component/wheel of UIPickerView http://stackoverflow.com/questions/13491582/putting-different-elements-in-individual-component-wheel-of-uipickerview different elements in individual component wheel of UIPickerView NSString pickerView UIPickerView pickerView titleForRow..
How to Start UITableView on the Last Cell? http://stackoverflow.com/questions/2156614/how-to-start-uitableview-on-the-last-cell will show up. However depending on the number of rows and which row you are scrolling to it may not make a difference. Putting reloadData avoids an exception if the data is not loaded yet in viewWillAppear. If you put the scrollToRowAtIndexPath in..
iPhone: Setting Navigation Bar Title http://stackoverflow.com/questions/2280710/iphone-setting-navigation-bar-title to set its title in my UIViewController subclass. This is another one of those simple things that gives me a headache. Putting self.title @ title text in viewDidLoad and initWithNibName didn't work either. Anybody know what's happening and how to..
Problem dealloc'ing memory used by UIImageViews with fairly large image in an UIScrollView http://stackoverflow.com/questions/289360/problem-deallocing-memory-used-by-uiimageviews-with-fairly-large-image-in-an-ui path. However you can get the path to the bundle with the following NSString fullpath NSBundle mainBundle bundlePath Putting that all together here's what that looks like in code NSString fullpath NSBundle mainBundle bundlePath stringByAppendingString..
Max image width in Mobile Safari? Getting unwanted downscaling on panos http://stackoverflow.com/questions/3720316/max-image-width-in-mobile-safari-getting-unwanted-downscaling-on-panos #2 which doesn't work is only 200K very low JPEG quality . Image #1 which does is 700K. So size isn't the problem. Putting an explicit width and height on the IMG element does indeed make the image the right size but it's scaled up and therefore..
Putting a UIView or UIWindow above Statusbar http://stackoverflow.com/questions/4252053/putting-a-uiview-or-uiwindow-above-statusbar a UIView or UIWindow above Statusbar My goal is to draw an invisible button above the status bar on the top of my iPhone..
http://stackoverflow.com/questions/4363755/blob-data-type filesystem delete of a file is a ton faster than a database having to excise a bunch of pages that contain the BLOB . Putting BLOBs in the database is horribly inefficient and quite possibly will blow out your app's memory use too unless you have..
Best architecture for an iOS application that makes many network requests? http://stackoverflow.com/questions/4810289/best-architecture-for-an-ios-application-that-makes-many-network-requests deserialization of JSON or XML into real objects triggering other network connections updating Core Data stores etc . Putting the code into each separate request subclass using a polymorphic method with a common name accross request classes makes..
Can somebody explain the process of a UIViewController birth (which method follows which)? http://stackoverflow.com/questions/5107604/can-somebody-explain-the-process-of-a-uiviewcontroller-birth-which-method-follo this method can be used to do custom subview layout instead of relying on Cocoa's default autoresizing methods. 5. Putting it all together Because of the complexity there are many different ways for this process to occur but a normal timeline..
How do I include a font with my iPhone application? http://stackoverflow.com/questions/566054/how-do-i-include-a-font-with-my-iphone-application 1 Make sure you have the rights to distribute the font. Most fonts even free ones do not allow you to distribute them. Putting them in your app most likely consitutes 'distribution' and would be considered illegal. 2 Copy the font to your Resources..
How do I use a UIWebView in a Table Cell? http://stackoverflow.com/questions/646809/how-do-i-use-a-uiwebview-in-a-table-cell slow down the UI when UIWebviews are being rendered offscreen you should always practice lazy loading on the iPhone. Putting UIWebviews in a UITableView will come with a potentially unacceptable performance hit. You will need to use other means..
iPhone app with or without AppStore http://stackoverflow.com/questions/7531137/iphone-app-with-or-without-appstore 30 distribution fees to Apple. We did our research and found that non of the convenient solutions would work for us Putting the app for free download on the App store protecting it with user password and charging our clients remotely may violate..
Last In-First Out Stack with GCD? http://stackoverflow.com/questions/7567827/last-in-first-out-stack-with-gcd idx setImage renderedImage With this nested dispatch we are rendering the images on an extremely low priority queue. Putting the image rendering on the background priority queue will allow the images being rendered from the cellForRowAtIndexPath..
Xcode error: Failed to launch simulated application http://stackoverflow.com/questions/822972/xcode-error-failed-to-launch-simulated-application I forced XCode to build for Simulator 2.2.1 Debug I was able to get past this problem by Close the iPhone Simulator Putting XCode into View Detail Opening the Info.plist file in the Resources folder Near the top of the file you should see Info.plist..
XCode: Displaying a UIDatePicker when user clicks on UITextbox http://stackoverflow.com/questions/8974131/xcode-displaying-a-uidatepicker-when-user-clicks-on-uitextbox those new to iOS Mac development is that you are attempting to set the property of an object that doesn't exist yet. Putting self.dueDate.inputView datePicker in your initWithNibName bundle will not work because the view has not yet loaded and dueDate..
http://stackoverflow.com/questions/930929/isequaltostring-cocoa-error jokeText Going by the exception I'm guessing that by 𦡞rray full of jokes you meant 𦡞rray of Joke objects Putting a Joke object into an NSString variable does not turn the Joke object into an NSString. All you're doing is telling the..
iPhone: Bonjour NSNetService IP address and port http://stackoverflow.com/questions/938521/iphone-bonjour-nsnetservice-ip-address-and-port loop. EDIT Added this As noted on another related thread the use of inet_ntoa is discouraged in favor of inet_ntop . Putting all of this together you get char addressBuffer INET6_ADDRSTRLEN for NSData data in self.addresses memset addressBuffer..
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