当我在数据库中保存例如一个字符串:“éric”时,当我检索它时,我得到的字符串类似于√©ric,这与其他字符如à,è...
的问题相同我使用sqlite3.h
初始化数据库:
- (void) inistalizeDataBase{
NSString *docsDir;
NSArray *dirPaths;
// Get the documents directory
dirPaths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory,
NSUserDomainMask, YES);
docsDir = dirPaths[0];
NSString *_databasePath = [[NSString alloc]
initWithString: [docsDir
stringByAppendingPathComponent:
@"trueorfalse.db"]];
NSFileManager *filemgr = [NSFileManager defaultManager];
if ([filemgr fileExistsAtPath: _databasePath ] == NO)
{
const char *dbpath = [_databasePath UTF8String];
if (sqlite3_open(dbpath, &ppDb) == SQLITE_OK)
{
char *errMsg;
NSString *requeteEnString= [NSString
stringWithFormat:@"CREATE TABLE IF NOT EXISTS `%s` (`id` int(11) NOT
NULL,`questions` varchar(1024),`good_response`
varchar(1024),`difficulty` varchar(45),`response`
varchar(1024),`imagename` varchar(255),`asked` varchar(45),`type`
varchar(255) ,PRIMARY KEY (`id`))", "questions"];
newStr
const char *sql_stmt =[requeteEnString UTF8String];
NSString *filePath = [[NSBundle mainBundle]
pathForResource:@"questions" ofType:@"sql"];
NSData *htmlData = [NSData
dataWithContentsOfFile:filePath];
NSString* newStr = [[NSString alloc] initWithData:htmlData
encoding:NSUTF8StringEncoding];
const char *request = [newStr UTF8String];
if (sqlite3_exec(ppDb, sql_stmt, NULL, NULL, &errMsg) ==
SQLITE_OK)
{
if (sqlite3_exec(ppDb, request, NULL, NULL, &errMsg)
== SQLITE_OK)
{
NSLog(@"Creation Data Base succed, %s",
"questions");
}
else{
NSLog(@"echeeeeeec, %s", errMsg);
}
}
else{
NSLog(@"echeeeeeec, %s", errMsg);
}
//sqlite3_close(ppDb);
} else {
NSLog(@"Error when trying open Data Base");
}
}
else{
const char *dbpath = [_databasePath UTF8String];
sqlite3_open(dbpath, &ppDb);
}
}
我的文件question.sql在utf8上,newStr有正确的字符
要检索数据,我会做类似的事情
-(NSMutableArray*)retrieveListQuestions{
NSMutableArray* listQuestionToReturn = [[NSMutableArray alloc] init];
DataBaseHelper *dataBaseHelper = [DataBaseHelper
sharedDataBaseHelper];
[dataBaseHelper inistalizeDataBase];
sqlite3* ppDb = dataBaseHelper.ppDb;
NSString *query = [NSString stringWithFormat:@"SELECT `id`,`questions`, `good_response`, `difficulty`, `response`, `imagename`, `asked`, `type` FROM %s where asked = 0","questions"];
sqlite3_stmt *statement;
if (sqlite3_prepare_v2(ppDb, [query UTF8String], -1, &statement, nil)
== SQLITE_OK) {
while (sqlite3_step(statement) == SQLITE_ROW) {
Questions *question = [[Questions alloc]init];
question.id = sqlite3_column_int(statement, 0);
// HERE I HAVE WEIRD CHARACTERS
question.question = [NSString stringWithFormat:@"%s",(char
*)sqlite3_column_text(statement, 1)];
question.good_response = [NSString stringWithFormat:@"%s",
(char *)sqlite3_column_text(statement, 2)];
question.difficulty = [NSString stringWithFormat:@"%s",(char
*)sqlite3_column_text(statement, 3)];
question.response = [NSString stringWithFormat:@"%s",(char
*)sqlite3_column_text(statement, 4)];
question.imagename = [NSString stringWithFormat:@"%s",(char
*)sqlite3_column_text(statement, 5)];
question.asked = [NSString stringWithFormat:@"%s",(char
*)sqlite3_column_text(statement, 6)];
question.type = [NSString stringWithFormat:@"%s",(char
*)sqlite3_column_text(statement, 7)];
[listQuestionToReturn addObject:question];
}
sqlite3_finalize(statement);
}
return listQuestionToReturn;
}
欢迎任何帮助谢谢
-------------------------- EDIT -------------------- -
问题来自stringWithFormat
而不是使用这个
question.question = [NSString stringWithFormat:@“%s”,(char
*)sqlite3_column_text(statement,1)];
我使用stringWithUTF8String,现在它的工作
question.question = [NSString stringWithUTF8String :( char
*)sqlite3_column_text(statement,1)];
答案 0 :(得分:0)
问题来自stringWithFormat
而不是使用此
question.question = [NSString stringWithFormat:@"%s",(char *)sqlite3_column_text(statement, 1)];
我使用stringWithUTF8String,现在它正在工作
question.question = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 1)];