UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"User Login" message:@"Please Enter the Followingnnnn" delegate:self cancelButtonTitle:@"Close" otherButtonTitles:@"Sign In", nil];


//UITextField *txtUserName;
//UITextField *txtPassword;

txtUserName = [[UITextField alloc] initWithFrame:CGRectMake(60, 75, 160, 25)];

txtUserName.tag = 3;
txtUserName.borderStyle = UITextBorderStyleBezel;
txtUserName.textColor = [UIColor whiteColor];
txtUserName.font = [UIFont systemFontOfSize:12.0];
txtUserName.backgroundColor=[UIColor whiteColor];
txtUserName.placeholder = @"User ID";
//txtUserName.userInteractionEnabled=YES;
[alert addSubview:txtUserName];


txtPassword = [[UITextField alloc] initWithFrame:CGRectMake(60, 110, 160, 25)];
txtPassword.tag = 3;
txtPassword.borderStyle = UITextBorderStyleBezel;
txtPassword.textColor = [UIColor whiteColor];
txtPassword.font = [UIFont systemFontOfSize:12.0];
txtPassword.backgroundColor=[UIColor whiteColor];
txtPassword.placeholder = @"Password";
[alert addSubview:txtPassword];

CGAffineTransform myTransform = CGAffineTransformMakeTranslation(0.0, 40.0);
[alert setTransform:myTransform];
alert.tag=3;
[alert show];
[alert release];
[txtPassword release];
[txtUserName release];

txtUserName.textColor = [UIColor whiteColor];

txtPassword.textColor = [UIColor whiteColor];

.
.
txtUserName.textColor = [UIColor blackColor];
.
.
.
txtPassword.textColor = [UIColor blackColor];
txtPassword.secureTextEntry = YES;