uiapplication

问题 Is it possible to launch the "Photos" application from an iPhone app? Similar to launching mail? [[UIApplication sharedApplication] openURL:url]; 回答1: The Photos app doesn't appear to register any URL schemes that other apps can use. There's a pretty well-established pattern in other system apps (e.g. Safari) of “saving an image” resulting in that image being placed in the user's camera roll; I'd recommend just sticking with that expected behavior, and perhaps using an alert to direct the

问题 Is it possible to launch the "Photos" application from an iPhone app? Similar to launching mail? [[UIApplication sharedApplication] openURL:url]; 回答1: The Photos app doesn't appear to register any URL schemes that other apps can use. There's a pretty well-established pattern in other system apps (e.g. Safari) of “saving an image” resulting in that image being placed in the user's camera roll; I'd recommend just sticking with that expected behavior, and perhaps using an alert to direct the

问题 Is it possible to launch the "Photos" application from an iPhone app? Similar to launching mail? [[UIApplication sharedApplication] openURL:url]; 回答1: The Photos app doesn't appear to register any URL schemes that other apps can use. There's a pretty well-established pattern in other system apps (e.g. Safari) of “saving an image” resulting in that image being placed in the user's camera roll; I'd recommend just sticking with that expected behavior, and perhaps using an alert to direct the

问题 Is it possible to do this? UIApplication's scheduledLocalNotifications doesn't seem to return notifications that have already been delivered to the user's notification center, so I think this may be by design, but I can't find any documented evidence of this. Anyone know? Thanks! EDIT: Found this: You can cancel a specific scheduled notification by calling cancelLocalNotification: on the application object, and you can cancel all scheduled notifications by calling cancelAllLocalNotifications.

问题 I have view that i want to cover entire screen. And i want to set its frame to cover entire screen. Browsing the stack overflow i found these two different ways of setting view frame to cover the screen: [UIScreen mainScreen].bounds [UIApplcation sharedApplication].keyWindow.bounds It seems to me they are returning same values always, or at least in few test cases I have tried. Currently i am using UIScreen , but i curious to know difference between these calls? Will there be some cases where

问题 my app running in the background and I want to take the html data from the web server every 60 second. (with alamofire or nsurlconnection etc..) but I could not find sample code associated with it. Is it possible to do something like this. updated every minute I want to do. applications running in the background mode, updateServer function I want to call every 60 second note: with background fetch methot not working every minute. func application(application: UIApplication,

问题 I have two applications and i want to open them from each other (like facebook opens messenger). After a little search i found that i have to know the url scheme of my app, but i don't know how can i declare it. In my urlSchemes are only facebook's schemes. var url = NSURL(string: "") UIApplication.sharedApplication().canOpenURL(url!) I found that code and as i understand i have to put in the url my urlScheme. Any help? 回答1: Here is a good tutorial on setting up URL Schemes within you app:

问题 I find that sometimes my application (Cocos2d game) beheaves in a "buggy" way after a significant time change. For example: case 1: when the application enters the background and, after several minutes, I restart it, I can see the loading image and then the application/game resumes. case 2: when the application enters the background and after a significant time change the application sometimes restarts, sometimes not. It is still unclear to me why. Looking at the AppDelegate methods I found:

问题 I using accelerometer in my app and i'm using [UIApplication sharedApplication].idleTimerDisabled = YES; to prevent the device to sleep. It works fine, but this way the screen is always on full bright, there is a way to prevent the device to sleep and keep the energy economy mode on? When idleTimerDisabled is stetted to NO the device enter in the energy economy mode before sleep, i just want to prevent the device to sleep and keep the energy economy. There is a way to do that? 回答1: There's a

问题 I have a webview in my mainviewcontroller and i am laoding a webpage in viewdidload method as below: - (void)viewDidLoad { [super viewDidLoad]; NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; [_loginWebView loadRequest:requestObj]; } and in the shouldstartloadwithrequest method, i check if the url contains "itunes" and i have the following code for it: - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType