This document discusses iOS programming and Objective C. It describes creating a user interface with a slider, switch, progress bar, and button. It provides code to update the slider and switch based on user input. It also includes code for a progress bar that updates every second using a timer. The document is by Ankit Desai and provides contact information at the end.

1. iOS Programming
Objective C + iOS

2. Profile
Ankit Desai
 Ph.D. Scholar, IET, Ahmedabad University
 Education: M. Tech. CE, B.E. I. T.
 Experience: 7.5 Years (Academic and Research)
 Research Interest: IoT, Big Data Analytics,
Machine Learning, Data Mining.

3. Slider, switch & progress
 Drag slider, progress and switch on GUI
 Drag respective labels (3 labels) on GUI
 Drag a button on GUI

4. Change Switch State

5. Change Process View
Properties

6. Change Slider Properties

7. Create UI
Switch
Progress
Button
Slider
Label

8. Connections

9. @synthesize
 @synthesize
lblProcess,lblVolume,sliderOutlet,switchOutlet,lblSwitc
h,processOutlet,timer;

10. Slider Code
- (IBAction)sliderValueChanged:(id)sender {
lblVolume.text=[NSString stringWithFormat:@"Volume
%d",(int)sliderOutlet.value];
}

11. Switch Code
- (IBAction)SwitchClicked:(id)sender {
if([switchOutlet isOn]){
lblSwitch.text = [NSString stringWithFormat:@"You Switched: on"];
}else{
lblSwitch.text = [NSString stringWithFormat:@"You Switched: off"];
}
}

12. ProgressBar Code 1
- (IBAction)startClicked:(id)sender {
timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self
selector:@selector(updateUI:) userInfo:nil repeats:YES];
}

13. ProgressBar Code 2
- (void)updateUI:(NSTimer *)timer
{
static int count = 0;
count++;
if (count <= 100) {
lblProcess.text = [NSString stringWithFormat:@"Completed %d %%",count];
processOutlet.progress = (float)count/100.0f;
}
}

14. Output

15. Output

16. Thank you
 For further communication or queries:
 Contact me:
 desaiankitb@gmail.com
 www.fb.com/desaiankitb