ios7

问题 I get this warning in my iOS project: (iOS7, XCode 5 GM) Warning: Unable to create restoration in progress marker file I am working on a viewcontroller that turns all black when I get this warning on startup. Deleting the app and restarting XCode sometimes seems to help. I am returning NO on both -(BOOL)application:(UIApplication *)application shouldRestoreApplicationState: -(BOOL)application:(UIApplication *)application shouldSaveApplicationState: Update1: I tested on iPhone4s. Same result.

问题 I used to compare the text entered in a txt field as below, if ([myTextfield.text isEqualToString: @""]) { // success code } else { // my code } in iOS 7 this check works perfectly. If nothing entered in to the text field, condition is success. But in iOS 6 if the field is blank, this condition always false and moves to the else block. So i did like, if (myTextfield.text.length == 0) { // success code } else { // my code } This works fine, and I just wanted to know what is wrong in my first

问题 I have a code which places a phone call using below code : // Make a call to given phone number - (void)callPhoneNumber:(NSString *)phoneNumber { if (!self.webview) self.webview = [[UIWebView alloc] init]; self.webview.delegate = self; // Remove non-digits from phone number phoneNumber = [[phoneNumber componentsSeparatedByCharactersInSet:[[NSCharacterSet decimalDigitCharacterSet] invertedSet]] componentsJoinedByString:@""]; // Make a call NSURL * url = [NSURL URLWithString:[NSString

问题 Finally got this migration working, it was a big pain. source code Everything works fine in iOS6 but in iOS7 app crash 回答1: Based on your comment and a bug report at http://openradar.io/15555487 I'm guessing that the full message is something like: CoreData: error: failure reading metadata plist with data bytes: <33> Unable to open database. Error: The file couldn’t be opened because it isn’t in the correct format. Info: { NSUnderlyingException = "An error <null> occurred converting the

问题 I have an application with dynamic data loaded into a tableview. When there is only one item (thus only one cell). To make sure that the UITableViewCellSeperator is not showing up for this one item I am using this code: - (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section { // This will create a "invisible" footer return 0.01f; } This works as expected and here is what my cell looks like: As you can see this works as expected and there is no cell separator

问题 I need to merge two video files along with their corresponding audio. I tried using : http://www.raywenderlich.com/13418/how-to-play-record-edit-videos-in-ios The videos gets merged, but their audio is missing. It's like a muted video. I need the audio also to be merged. I also googled on this, couldn't find anything useful. Can someone help me on this please... 回答1: Live-editing audio is exactly like live-editing video. Go back to each movie and fetch the audio track and stick it into your

问题 I have a UICollectionView on iOS7 which crashes randomly when intense scrolling. I enabled zombies and found that it gives me an error saying: *** -[NSIndexPath section]: message sent to deallocated instance 0x17dbc970 I believe this is due to an Apple error described here. Apparently, the app crashes when someone highlights a cell while scrolling fast, and then the OS tries to unhighlight it when it moves off screen, when it ceases to exist. The proposed solution is to disable the

问题 I am trying to figure out how to use a new MKOverlayPathRenderer class. In my app I previously used MKOverlayPathView when building with iOS 6 SDK, but it does not seem to work with iOS 7 SDK unfortunately. So I am trying to move my app from MKOverlayPathView to MKOverlayPathRenderer , but have no success so far. MKPolylineRenderer works OK, but MKOverlayPathRenderer does not. The code gets called, but no overlay is drawn on a map. Does anybody have a working example for MKOverlayPathRenderer

问题 Hey Guys Please help me i want to achieve the following functionality in Custom UIPiker As shown in below Picture. I want to change the text colour of selected area only like above 回答1: Add lable in your pickerview in your viewDidLoad method as below. Define label and myPickerView both in ViewController.h file - (void)viewDidLoad { myPickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 200, 320, 200)]; myPickerView.delegate = self; myPickerView.showsSelectionIndicator = YES; [self

问题 I have an NSAttributedString that is reporting a boundingRectWithSize (and by extension a UITextView which improperly calculates its sizeThatFits) when the font size is decreased from the font size that was used to create it. It doesn't happen on all NSAttributedStrings for which I do similar operations, so here's the steps to reproduce. Use a non-standard font that does not include the full unicode character set. Make sure the string includes characters in this "unsupported" set. iOS will