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POChecking Username and Password to match in SQLIte
 

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    <p>How can I check if the Username and Password would be the same as the Username and Password in the Database.</p> <p>AppDelegate.m:</p> <pre><code>-(void) readLoginFromDatabase { // Setup the database object sqlite3 *database; // Init the Array lo = [[NSMutableArray alloc] init]; // Open the database from the users filessytem if(sqlite3_open([databasePath UTF8String], &amp;database) == SQLITE_OK) { // Setup the SQL Statement and compile it for faster access const char *sqlStatement = "Select * from Login"; sqlite3_stmt *compiledStatement; if(sqlite3_prepare_v2(database, sqlStatement, -1, &amp;compiledStatement, NULL) == SQLITE_OK) { // Loop through the results and add them to the feeds array while(sqlite3_step(compiledStatement) == SQLITE_ROW) { // Read the data from the result row NSString *aLoginName = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)]; NSString *aLoginPass = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 2)]; NSString *aLoginAccess = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 3)]; // Create a new object with the data from the database Login *los = [[Login alloc] initWithName:aLoginName pass:aLoginPass access:aLoginAccess]; // Add the object to the Array [lo addObject:los]; } } // Release the compiled statement from memory sqlite3_finalize(compiledStatement); } sqlite3_close(database); } </code></pre> <p>ViewController.m:</p> <pre><code>-(IBAction)buttonWasClicked:(id)sender { if ((userText.text != logins.loginUser) &amp;&amp; (passText.text != logins.loginPass)) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"ERROR" message:[[NSString alloc] initWithFormat:@"Your Username/Password is incorrect!"] delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; } else { StudentViewController *studentView = [self.storyboard instantiateViewControllerWithIdentifier:@"studentView"]; [studentView setModalTransitionStyle:UIModalTransitionStyleCrossDissolve]; [self presentViewController:studentView animated:YES completion:nil]; } if (userText.text != logins.loginUser) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"ERROR" message:[[NSString alloc] initWithFormat:@"Your Username is incorrect!"] delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; } if (passText.text != logins.loginPass) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"ERROR" message:[[NSString alloc] initWithFormat:@"Your Password is incorrect!"] delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; } } </code></pre> <p>Even when the Username and Password I type is exactly the same as in the database, it would still show me the error message instead of displaying the next view.</p>
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    1. USToon Krijthe
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    1. CODon't you want to 1. hash your passwords; 2. use column 0, 1 and 2 instead of 1, 2 and 3; 3. learn C and read NSString's docs?
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    2. COFor Static NSStrings you can just Use @"TEXT" you do not have to alloc and init them.
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      1. USjussi
    3. COMake your condition correct....and debug it,,,
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      1. USRajneesh071
 

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