Question

i have a view with one slider and a label.i am showing a countdown on label and setting time on label using slider.now suppose i have started the timer so the label’s value is decreasing every minute and slider’s value is also decreasing.now i want that if i close my app and then reopen the timer should be already running+label’s value is according to time+slider value is according to time? here is an image what i am doing

Answer 1

I’m not sure if I’m missing something, but storing stuff in NSUserDefaults is super easy. To save the slider’s value:

[[NSUserDefaults standardUserDefaults] setFloat:[mySlider value] forKey:@"sliderValue"];

To save the label’s value:

[[NSUserDefaults standardUserDefaults] setValue:[myLabel text] forKey:@"textValue"];

To get them back, simply reverse it:

[mySlider setValue:[[NSUserDefaults standardUserDefaults] floatForKey:@"sliderValue"]];

Personally, I wouldn’t save the string representation of the time left, just the float. You can then restore the timer’s text using whatever existing code you’re using to convert the float value to a string representation.