UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@”Welcome to Savings Goal” message:@”Please press the red button to setup your savings goal and current amount saved.” delegate:self cancelButtonTitle:nil otherButtonTitles:@”Ok Lets Save!”,nil];
[alert show];

These two lines I keep using over and over again. They form a very common copy and paste in my projects.
More interesting is performing an action on a button click in the UIAlertView. Lets say you have 2 buttons (buttonIndex 0 and 1). use the following method to execute code on that button press.

- (void)alertView: (UIAlertView *)alertView clickedButtonAtIndex: (NSInteger)buttonIndex
{
if (buttonIndex==0) {
NSLog(@”In AlertView Delegate”);
//start a timer
timer = [NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(timerVoid) userInfo:nil repeats:YES];
}

}

This will start a timer (NSTimer *timer), when the first button is pressed in an UIAlert. For UIAlerts with multiple buttons, you should use the int buttonIndex to detect which button was pressed.

Thats all for today, enjoy.

I would like to share a simple project I made to help understand the UIDate Picker. This was based on the iPhone Developers Cookbook Example.

The project is a simple date spinner which once it sets on a date sends a UIAlert of the date. It outlines well the UIDate Picker and an UIAlert. The project is extremely simple, but hopefully someone will find it useful.

UIDatePicker Code:
// Add the picker
float height = 216.0f;
pickerView = [[UIDatePicker alloc] initWithFrame:CGRectMake(0.0f, 416.0f - height, 320.0f, height)];
pickerView.datePickerMode = UIDatePickerModeDate;
[pickerView addTarget:self action:@selector(changedDate:) forControlEvents:UIControlEventValueChanged];
[self.view addSubview:pickerView];
[pickerView release];

UIAlert Code:
NSString *message = caldate;
UIAlertView *baseAlert = [[UIAlertView alloc]  initWithTitle:@"" message:message delegate:self cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[baseAlert show];

Project Screenshots

Project File

• iPhoneDev – DatePicker with UIAlertView Example

References

• iPhone Cookbook