使用coredata导致的版本更新后程序crash的问题
2013-01-22 10:33 三戒1993 阅读(122) 评论(0) 编辑 收藏 举报
在错误收集中有这么一个问题:我使用的xmpp框架,在调整为适应ios5的版本后出现一个导致程序crash问题。但是原来的xmpp代码没有改变,那么问题在哪呢?
报错如下:
- BUG监听报告:
- 手机型号: iPhone OS , 版本: 4.1
- 程序名称: Dating, 版本:1.8
- 用户: 10892386
- 2011-11-13 16:17:31.506 Taonan[11747:307] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'This NSPersistentStoreCoordinator has no persistent stores. It cannot perform a save operation.'
- *** Call stack at first throw:
- (
- 0 CoreFoundation 0x344aaed3 __exceptionPreprocess + 114
- 1 libobjc.A.dylib 0x33975811 objc_exception_throw + 24
- 2 CoreData 0x338f29c1 -[NSPersistentStoreCoordinator executeRequest:withContext:error:] + 196
- 3 CoreData 0x3389253d -[NSManagedObjectContext save:] + 700
- 4 Taonan 0x00045145 -[XMPPCapabilitiesCoreDataStorage setCapabilities:forHash:algorithm:] + 444
- 5 Taonan 0x00042121 -[XMPPCapabilities xmppStream:willSendPresence:] + 232
- 6 Taonan 0x0003ca57 -[XMPPStream sendElement:withTag:] + 342
- 7 Taonan 0x0003c8f5 -[XMPPStream sendElement:] + 28
- 8 Taonan 0x0004592f -[iPhoneXMPP goOnline] + 54
在stackoverflow找到解决办法:http://stackoverflow.com/questions/1091228/i-keep-on-getting-save-operation-failure-after-any-change-on-my-xcode-data-mod
需要修改coredata的persistentstorecoordinator的代理实现方法,添加options,使得当coredata数据模型发生变化时,自动更该合并变化。代码如下:
- - (NSPersistentStoreCoordinator *)persistentStoreCoordinator {
- if (persistentStoreCoordinator != nil) {
- return persistentStoreCoordinator;
- }
- NSURL *storeUrl = [NSURL fileURLWithPath: [[self applicationDocumentsDirectory] stringByAppendingPathComponent: @"database.sqlite"]];
- NSError *error = nil;
- NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:
- [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption,
- [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil];
- persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: [self managedObjectModel]];
- if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:options error:&error]) {
- // Handle error
- }
- return persistentStoreCoordinator;
- }
至于已发布的新版本,如果用户遇到该问题。建议推荐用户删除原来的app后,全新安装app程序,即可解决该问题