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我遇到了與呈現presentModalViewController的UIImagePickerController有關的問題。視圖顯示後（即相機或相冊），應用程序崩潰。UIImagePickerController問題
整個用戶界面是在代碼中創建的，沒有界面生成器。由於我已經更新了在ios4上運行的代碼，這隻能停止工作。使用泄漏，我找不到任何，我得到的總內存分配大約5mb。
下面是我使用呈現相機選擇器的代碼 -
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
[imagePicker setSourceType:UIImagePickerControllerSourceTypeCamera];
[imagePicker setDelegate:self];
[imagePicker setAllowsEditing:YES];
[imagePicker setCameraCaptureMode:UIImagePickerControllerCameraCaptureModePhoto];
[self presentModalViewController:imagePicker animated:YES];
[imagePicker release];
和代表如下 -
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *selectedImage = [info objectForKey:UIImagePickerControllerEditedImage];
UIImage *newImage = [self createGameImage:selectedImage];
[gameOptionsImageDisplay setImage:[self resizeImage:newImage toSize:CGSizeMake(95, 95)]];
[self dismissModalViewControllerAnimated:YES];
[mainView setFrame:CGRectMake(0, 0, 320, 480)];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[self dismissModalViewControllerAnimated:YES];
[mainView setFrame:CGRectMake(0, 0, 320, 480)];
}
設置NSZombiesEnabled爲YES告訴我 -
*** -[UIImage isKindOfClass:]: message sent to deallocated instance 0x142fc0
堆棧軌跡如下 -
0 0x313f7d7c in ___forwarding___
1 0x3138a680 in __forwarding_prep_0___
2 0x3166dad2 in -[UIImageView(UIImageViewInternal) _canDrawContent]
3 0x3166c652 in -[UIView(Internal) _didMoveFromWindow:toWindow:]
4 0x3166c50e in -[UIView(Internal) _didMoveFromWindow:toWindow:]
5 0x3166c50e in -[UIView(Internal) _didMoveFromWindow:toWindow:]
6 0x3166c50e in -[UIView(Internal) _didMoveFromWindow:toWindow:]
7 0x3166c50e in -[UIView(Internal) _didMoveFromWindow:toWindow:]
8 0x3166aa8a in -[UIView(Hierarchy) _postMovedFromSuperview:]
9 0x31672df6 in -[UIView(Hierarchy) removeFromSuperview]
10 0x316d76ee in -[UITransitionView _didCompleteTransition:]
11 0x31754556 in -[UITransitionView _transitionDidStop:finished:]
12 0x316bc97a in -[UIViewAnimationState sendDelegateAnimationDidStop:finished:]
13 0x316bc884 in -[UIViewAnimationState animationDidStop:finished:]
14 0x33e487c0 in run_animation_callbacks
15 0x33e48662 in CA::timer_callback
16 0x313caa5a in __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__
17 0x313ccee4 in __CFRunLoopDoTimer
18 0x313cd864 in __CFRunLoopRun
19 0x313768ea in CFRunLoopRunSpecific
20 0x313767f2 in CFRunLoopRunInMode
21 0x329f36ee in GSEventRunModal
22 0x329f379a in GSEventRun
23 0x316692a6 in -[UIApplication _run]
24 0x31667e16 in UIApplicationMain
25 0x00002726 in main at main.m:14
如果有人能幫助我，我會永遠感激！
感謝，
斯圖爾特
我想了解更多關於您的視圖控制器。有一個UIImage看起來像是被雙重釋放......視圖控制器中是否有UIImage屬性？ 此外，我相信你已經處理了這個，它會導致不同的錯誤信息，但你知道你不能在模擬器上使用相機？最好測試用戶的功能，否則會在iPod Touch上產生異常。 另外，你可以通過斷點確認代碼永遠不會像你的代理回調一樣嗎？ – makdad 2010-08-20 00:57:55
我認爲問題出在父'UIViewController'上。你說你以編程方式創建它。你能顯示代碼嗎？ – 2010-08-20 01:06:51
@phooze - 是的，我正在測試在顯示選項之前是否有相機可用，並且工作正常。 @ St3fan - 調用選擇器的代碼是UIViewController的一個子類，它在應用程序委託中創建並添加到窗口中。 我已經用一個新的UIViewController替換了圖像選擇器，並帶有一個漂亮的紅色背景顏色的單個UIView，並且當presentModalViewController顯示視圖時，只要它完成了在窗口中的呈現，它仍然會崩潰。呸！ – hiptomorrow 2010-08-20 11:21:10