Ios 错误:数据库在sqlite中被锁定
//在此处创建数据库Ios 错误:数据库在sqlite中被锁定,ios,objective-c,Ios,Objective C,//在此处创建数据库 -(void) createDataBase { docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0]; fullPath = [docPath stringByAppendingPathComponent:@"Recording.sqlite"];
-(void) createDataBase
{
docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0];
fullPath = [docPath stringByAppendingPathComponent:@"Recording.sqlite"];
sqlite3_open([fullPath UTF8String], &dbForEmf);
}
// create table
-(void) createTable
{
if (sqlite3_open([fullPath UTF8String], &dbForE) == SQLITE_OK)
{
const char* createQuery = "CREATE TABLE IF NOT EXISTS EEE(E_ID INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, E_NAME TEXT,E_READING TEXT,E_DATE TEXT,E_SIZE TEXT,E_LABLE TEXT)";
int errorCode = sqlite3_prepare(dbForE, createQuery, -1, &prepareStmt, NULL);
if (errorCode == 0) {
sqlite3_step(prepareStmt);
}
else
{
}
sqlite3_finalize(prepareStmt);
sqlite3_close(dbForE);
}
else
{
NSLog(@"data base not Open");
}
}
// insert data here
-(void) insertData
{
if (sqlite3_open([fullPath UTF8String], &dbForE)==SQLITE_OK)
{
NSString *insertSql = [NSString stringWithFormat:@"INSERT INTO EEE(E_NAME,E_READING,E_DATE,E_SIZE,E_LABLE) VALUES('%@','%@','%@','%@','%@')",_referenceObject.lastFilePath,_referenceObject.fileString,_referenceObject.dateString,_referenceObject.fileSizeString,_referenceObject.titleOfButtonString];
const char *insert_stmt=[insertSql UTF8String];
sqlite3_prepare_v2(dbForE,insert_stmt,-1,&prepareStmt,NULL);
sqlite3_reset(prepareStmt);
if (sqlite3_step(prepareStmt)==SQLITE_DONE)
{
NSLog(@"inserted the values in table");
}
else
{
NSLog(@" not inserted the values in table");
NSLog(@"error: %s", sqlite3_errmsg(dbForE));
}
sqlite3_finalize(prepareStmt);
sqlite3_close(dbForE);
}
}
当我转到第二个viewController并返回到第一个viewController时,hai数据将插入到第一个viewController。数据未插入错误显示数据库已锁定…检查您是否已在第二个viewController或其他任何位置将数据库保持打开状态。在createDataBase中,您已打开数据库,但数据库未被锁定关闭后,您再次尝试打开此文件,因此您的数据库被锁定。首先,您应该在createdatabase函数中关闭数据库。您好,我喜欢您的照片,您是否可以在另一个ViewController中保持数据库打开状态I打开另一个ViewController并在那里关闭它&dbforef&&dbForE使用两个数据库?抱歉,请复制过去的问题dbForE仅在dbforef处理过的一个数据库dbForE,数据库锁定问题仅在您忘记关闭数据库时发生。请检查您的代码。这是您遇到此问题的唯一原因