我有一个带有保存按钮的应用程序。当我单击保存按钮时，应用程序应自动更新一行的值并将其设置为 YES。
到目前为止，我有以下代码，但它实际上并没有工作。请记住，我的应用程序是一个选项卡菜单应用程序。在第一个视图中，我有表格单元格，单击时我转到另一个视图控制器，即详细信息视图控制器，其中存在按钮。
当我单击按钮时，数据库中“Fav”字段的值应该从 NO 变为 YES。
这是我的代码：
- (IBAction)AddButClick:(UIButton *)sender {
[AddBut setImage:[UIImage imageNamed:@"apple-logo copy.png"] forState:UIControlStateSelected];
[AddBut setImage:[UIImage imageNamed:@"apple-logo copy.png"] forState:UIControlStateHighlighted];
Favo = [[NSMutableArray alloc] initWithCapacity:1000000];
// NSLog(authorNAme);
@try {
NSFileManager *fileMgr = [NSFileManager defaultManager];
// NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:@"dictionary.sqlite"];
//NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:@"authorsDb2.sqlite"];
// NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:@"FinalDb.sqlite"];
//NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:@"xxJuridique-FINAL-OK.sqlite"];
NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:@"data.sqlite"];
BOOL success = [fileMgr fileExistsAtPath:dbPath];
if(!success)
{
NSLog(@"Cannot locate database file '%@'.", dbPath);
}
if(!(sqlite3_open([dbPath UTF8String], &db) == SQLITE_OK))
{
NSLog(@"An error has occured: %@", sqlite3_errmsg(db));
}
sqlite3_stmt *compiled_statement1;
if(sqlite3_open([dbPath UTF8String], &db) == SQLITE_OK) {
//const char *sqlStatement =
NSString *formatedSql = [NSString stringWithFormat:@"UPDATE Sheet1 SET Fav = 'YES' WHERE field3 = '%@' " , authorNAme2];
NSLog(@"This is the query %@",formatedSql);
const char *sql = [formatedSql UTF8String];
NSLog(@" !!!!!!!! In the middle of it !!!!!!!!!!!!");
if (sqlite3_prepare_v2(db, sql, -1, &compiled_statement1, NULL) != SQLITE_OK) {
NSLog(@"!!!!!!!!!!!!!!!!!!!ERRRRROOOOOOORRRRRRRRR!!!!!!!!!!!!!!!!!!!!!!!!!");
NSAssert1(0, @"Error: failed to prepare statement with message '%s'.", sqlite3_errmsg(db));
}
// sqlite3_exec(db, [compiled_statement1 UTF8String], NULL, NULL, NULL);
//sqlite3_bind_text(compiled_statement1, 1, [formatedSql UTF8String], -1, SQLITE_TRANSIENT);
int success = sqlite3_step(compiled_statement1);
sqlite3_reset(compiled_statement1);
if (success != SQLITE_ERROR) {
NSLog(@"Successfully inserted");
sqlite3_last_insert_rowid(db);
}
sqlite3_finalize(compiled_statement1);
}
//
// BOOL success = [fileMgr fileExistsAtPath:dbPath];
//
// if(!success)
// {
// NSLog(@"Cannot locate database file '%@'.", dbPath);
// }
// if(!(sqlite3_open([dbPath UTF8String], &db) == SQLITE_OK))
// {
// NSLog(@"An error has occured: %@", sqlite3_errmsg(db));
//
// }
// const char *sql = "SELECT F_Keyword FROM wordss";
const char *sql = "SELECT * FROM Sheet1";
NSLog(@"Successfully selected from database");
sqlite3_stmt *sqlStatement;
if(sqlite3_prepare(db, sql, -1, &sqlStatement, NULL) != SQLITE_OK)
{
NSLog(@"Problem with prepare statement: %@", sqlite3_errmsg(db));
}else{
NSLog(@"Got in the else tag");
while (sqlite3_step(sqlStatement)==SQLITE_ROW /*&& PAss == NO*/) {
NSLog(@"Got in the while tag");
Author * author = [[Author alloc] init];
NSLog(@"Author initialized");
author.name = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement,10)];
NSLog(@"Initialization ok");
// NSLog(author.name);
if(/*author.name == @"NO" &&*/ HighLighted == NO){
//const char *sql2 = "INSERT INTO Sheet1 ";
[AddBut setImage:[UIImage imageNamed:@"apple-logo copy.png"] forState:UIControlStateNormal];
NSLog(@"We have not selected it as fav yet");
// [AddBut setSelected:NO]; //btn changes to normal state
NSLog(@"The button was NOt highlighted and now is");
HighLighted = YES;
// PAss = YES;
// [self release];
break;
}
else
{
NSLog(@"We have selected it as fav");
[AddBut setImage:[UIImage imageNamed:@"apple-logo.png"] forState:UIControlStateNormal];
[AddBut setSelected:NO]; //btn changes to normal state
NSLog(@"The button was highlighted and now is NOt");
HighLighted = NO;
break;
// [self viewDidLoad];
// PAss = YES;
}
// [Favo release];
// NSLog(Favo);
// author.name = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement,2)];
// author.title = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement,2)];
// author.genre = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 4)];
// [theauthors addObject:author];
}
}
}
@catch (NSException *exception) {
NSLog(@"Problem with prepare statement: %@", sqlite3_errmsg(db));
}
@finally {
// sqlite3_finalize(sqlStatement);
sqlite3_close(db);
return Favo;
}