purgeMemoryForReason 用于相机控制 UIImagePickerViewController

Question

我正在开发一个带有自定义相机控件的小应用程序。

它的所有功能都运行良好，没有任何内存泄漏

但是当我尝试访问相机超过 8-9 次时，应用程序崩溃......

我用性能工具检查过，但那里没有内存泄漏 ,,, Live Bites 的总大小仅为 4.96 MB

我收到以下错误...

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libsystem_kernel.dylib          0x35443a1c __pthread_kill + 8
1   libsystem_c.dylib               0x320e93b4 pthread_kill + 52
2   libsystem_c.dylib               0x320e1bf8 abort + 72
3   libstdc++.6.dylib               0x31d5ca64 __gnu_cxx::__verbose_terminate_handler() + 376
4   libobjc.A.dylib                 0x3011006c _objc_terminate + 104
5   libstdc++.6.dylib               0x31d5ae36 __cxxabiv1::__terminate(void (*)()) + 46
6   libstdc++.6.dylib               0x31d5ae8a std::terminate() + 10
7   libstdc++.6.dylib               0x31d5af5a __cxa_throw + 78
8   libobjc.A.dylib                 0x3010ec84 objc_exception_throw + 64
9   CoreFoundation                  0x3170e1b8 -[NSObject(NSObject) doesNotRecognizeSelector:] + 96
10  CoreFoundation                  0x3170d642 ___forwarding___ + 502
11  CoreFoundation                  0x31684178 _CF_forwarding_prep_0 + 40
12  UIKit                           0x32a37118 -[UIViewController purgeMemoryForReason:] + 20
13  UIKit                           0x32a37146 -[UIViewController didReceiveMemoryWarning] + 10
14  UIKit                           0x32a3715c -[UIViewController _didReceiveMemoryWarning:] + 8
15  Foundation                      0x3632117c _nsnote_callback + 136
16  CoreFoundation                  0x316d9208 __CFXNotificationPost_old + 396
17  CoreFoundation                  0x31673ee4 _CFXNotificationPostNotification + 112
18  Foundation                      0x3631e5cc -[NSNotificationCenter postNotificationName:object:userInfo:] + 64
19  Foundation                      0x363201ba -[NSNotificationCenter postNotificationName:object:] + 18
20  UIKit                           0x32a0d35a -[UIApplication _performMemoryWarning] + 42
21  UIKit                           0x32a0dd7c -[UIApplication _receivedMemoryNotification] + 120
22  UIKit                           0x32a0b500 _memoryStatusChanged + 36
23  CoreFoundation                  0x316d9d62 __CFNotificationCenterDarwinCallBack + 18
24  CoreFoundation                  0x316d6bd8 __CFMachPortPerform + 204
25  CoreFoundation                  0x316e1a90 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 20
26  CoreFoundation                  0x316e3838 __CFRunLoopDoSource1 + 160
27  CoreFoundation                  0x316e4606 __CFRunLoopRun + 514
28  CoreFoundation                  0x31674ebc CFRunLoopRunSpecific + 224
29  CoreFoundation                  0x31674dc4 CFRunLoopRunInMode + 52
30  GraphicsServices                0x36497418 GSEventRunModal + 108
31  GraphicsServices                0x364974c4 GSEventRun + 56
32  UIKit                           0x328e2d62 -[UIApplication _run] + 398
33  UIKit                           0x328e0800 UIApplicationMain + 664
34  Imagepicker                 0x000020ec main (main.m:14)
35  Imagepicker                 0x000020a0 start + 32

Live Bits 小于 5 MB，但我还是遇到了这个崩溃...... 对于 3G 和 3G，它变得更加有线...... 它对他们来说崩溃了很多......而且更经常......

任何帮助?????

Answer 1

我在自己构建的相机应用程序中遇到了类似的问题。我收到很多低内存警告。你在看那些吗？

作为一种权宜之计，当我确定问题时，我提出了这样的问题：

- (void)didReceiveMemoryWarning { NSLog(@"内存问题！！！！！！！！！"); NSString *errorString = [NSString stringWithFormat:@"目前没有足够的内存来运行这个应用程序。你应该退出一些应用程序，然后再试一次。"]; UIAlertView *errorAlert = [[UIAlertView alloc] initWithTitle:@"内存不足警告" message:errorString delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [错误警报显示]; [错误警报发布]； [super didReceiveMemoryWarning]; }