在iPhone中创建数据库副本
有人能帮我吗在iPhone中创建数据库副本,iphone,sql,Iphone,Sql,有人能帮我吗 如何创建数据库的副本 我们如何在iPhone中打开该数据库 如何在应用程序路径中创建文件夹 如何复制应用程序路径中包含文件的文件夹 “用于创建数据库副本…” “打开该数据库…” “用于在应用程序路径中创建文件夹” “用于复制应用程序中的文件和文件夹” “用于创建数据库副本…” “打开该数据库…” “用于在应用程序路径中创建文件夹” “用于复制应用程序中的文件和文件夹” BOOL success; NSFileManager *fileManager = [NSFileManag
- 如何创建数据库的副本
- 我们如何在iPhone中打开该数据库
- 如何在应用程序路径中创建文件夹
- 如何复制应用程序路径中包含文件的文件夹
BOOL success;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentPath = [paths objectAtIndex:0];
NSString *finalPath = [documentPath stringByAppendingPathComponent:@"test.sqlite"];
success = [fileManager fileExistsAtPath:finalPath];
if(success)
{
NSLog(@"Database Already Created.");
return;
}
NSString *defaultPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"test.sqlite"];
success = [fileManager copyItemAtPath:defaultPath toPath:finalPath error:&error];
if(success)
{
NSLog(@"Database Created Successfully.");
}
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentPath = [paths objectAtIndex:0];
NSString *finalPath = [documentPath stringByAppendingPathComponent:@"test.sqlite"];
if(sqlite3_open([finalPath UTF8String], &database) != SQLITE_OK)
{
sqlite3_close(database);
NSLog(@"Error to Open Database :- %s",sqlite3_errmsg(database));
}
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder
NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:@"/FolderName"];
if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath])
{
[[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error];
}
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder
NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:@"/FolderName"];
if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath])
{
BOOL successs;
NSString *defaultPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"Files/FolderName"];
successs = [[NSFileManager defaultManager] fileExistsAtPath:defaultPath];
if(successs)
{
NSLog(@"TRUE");
NSString *strFile = [NSString stringWithFormat:@"%@",dataPath];
NSLog(@"File :- '%@'",strFile);
[fileManager copyItemAtPath:defaultPath toPath:strFile error:&error];
}
else
NSLog(@"FALSE");
}