草庐IT

sqlite-instance

全部标签

ios - 崩溃-[AVPlayerItem _attachToPlayer :] An AVPlayerItem cannot be associated with more than one instance of AVPlayer

我有一个崩溃影响了我大约10%的用户,但我无法重现它,并且不知道发生这种情况的确切时间。Crashlytics报告说,大约一半的崩溃用户没有关注应用程序,即做背景音频或AirPlay。该应用程序播放HLS视频流,并在后台切换到纯音频版本。有什么问题吗,或者为什么我的单例Player类中会有多个AVPlayer实例?谢谢!ExceptionType:NSInvalidArgumentExceptionReason:AnAVPlayerItemcannotbeassociatedwithmorethanoneinstanceofAVPlayerFatalExceptionLatestCra

iphone 通知结果为 "unrecognized selector sent to instance..."

简而言之,我在ClassA(在viewDidLoad中)注册了以下NSNotification监听器:[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(playSong)name:@"playNotification"object:nil];我在ClassA.h中声明了选择器:-(void)playSong:(NSNotification*)notification;实现如下:-(void)playSong:(NSNotification*)notification{NSString*theTi

iphone 通知结果为 "unrecognized selector sent to instance..."

简而言之,我在ClassA(在viewDidLoad中)注册了以下NSNotification监听器:[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(playSong)name:@"playNotification"object:nil];我在ClassA.h中声明了选择器:-(void)playSong:(NSNotification*)notification;实现如下:-(void)playSong:(NSNotification*)notification{NSString*theTi

ios - [__NSDictionaryI setObject :forKey:]: unrecognized selector sent to instance

我正在尝试将“dateTime”添加到我的字典中,定义如下:SymptomRanking:{5111ef19253b4a9150000000=1;5111f029253b4add4e000000=1;5111f036253b4a123d000001=1;5111f045253b4a404f000000=1;}NSLog(@"dateselected:%@",[[self.datePickerdate]description])[self.resultssetObject:[[self.datePickerdate]description]forKey:@"dateTime"];应用程序

ios - [__NSDictionaryI setObject :forKey:]: unrecognized selector sent to instance

我正在尝试将“dateTime”添加到我的字典中,定义如下:SymptomRanking:{5111ef19253b4a9150000000=1;5111f029253b4add4e000000=1;5111f036253b4a123d000001=1;5111f045253b4a404f000000=1;}NSLog(@"dateselected:%@",[[self.datePickerdate]description])[self.resultssetObject:[[self.datePickerdate]description]forKey:@"dateTime"];应用程序

ios - 架构 i386 : "_sqlite3_open", 的 undefined symbol 引用自:错误

我已经创建了一个数据库类并打包了一些方法。但是,一旦构建项目...Undefinedsymbolsforarchitecturei386:"_sqlite3_open",referencedfrom:-[MyDataBaseopenOrCreateDatabase:]inMyDataBase.o"_sqlite3_exec",referencedfrom:-[MyDataBasecreateTable:]inMyDataBase.o-[MyDataBaseInsertTable:]inMyDataBase.o-[MyDataBaseUpdataTable:]inMyDataBase.o

ios - 架构 i386 : "_sqlite3_open", 的 undefined symbol 引用自:错误

我已经创建了一个数据库类并打包了一些方法。但是,一旦构建项目...Undefinedsymbolsforarchitecturei386:"_sqlite3_open",referencedfrom:-[MyDataBaseopenOrCreateDatabase:]inMyDataBase.o"_sqlite3_exec",referencedfrom:-[MyDataBasecreateTable:]inMyDataBase.o-[MyDataBaseInsertTable:]inMyDataBase.o-[MyDataBaseUpdataTable:]inMyDataBase.o

ios - NS无效参数异常 : "Unrecognized selector sent to instance"

我遇到了一个我并不真正理解原因的问题。异常没有给我理解问题的线索。我想根据myArray中给定的数据修改我界面中UILabel的内容。但是,正如我在函数“cellForRowAtIndexPath”中指定的行,程序会触发异常。这个问题是什么原因造成的?@property(strong,nonatomic)NSMutableArray*myArray;//-(void)viewDidLoad{[superviewDidLoad];//Doanyadditionalsetupafterloadingtheview.[myArrayaddObject:@{@"field1":@"myfiel

ios - NS无效参数异常 : "Unrecognized selector sent to instance"

我遇到了一个我并不真正理解原因的问题。异常没有给我理解问题的线索。我想根据myArray中给定的数据修改我界面中UILabel的内容。但是,正如我在函数“cellForRowAtIndexPath”中指定的行,程序会触发异常。这个问题是什么原因造成的?@property(strong,nonatomic)NSMutableArray*myArray;//-(void)viewDidLoad{[superviewDidLoad];//Doanyadditionalsetupafterloadingtheview.[myArrayaddObject:@{@"field1":@"myfiel

[SQLITE_ERROR] SQL error or missing database

Java程序中有用到sqlite数据库,程序部署在windows运行OK,在linux上运行则提示[SQLITE_ERROR]SQLerrorormissingdatabase(nosuchtable:exceptionData)异常堆栈信息为:org.sqlite.core.DB.newSQLException(DB.java:941)org.sqlite.core.DB.newSQLException(DB.java:953)org.sqlite.core.DB.throwex(DB.java:918)org.sqlite.core.NativeDB.prepare_utf8(Native