Show Hide UIView Twice Every 5 Seconds Using NSTimer - ios

Question

I have a UIView added to a view controller. I want to make it blink twice every 5 seconds.
The following code makes the UIView blink on and off every 1 second:
-(void) showHideView{
[UIView animateWithDuration:1
delay:5
options:UIViewAnimationOptionCurveEaseInOut
animations:^{
self.myview.alpha = 0;
}
completion:^(BOOL finished){
[UIView animateWithDuration:1
delay:5
options:UIViewAnimationOptionCurveEaseInOut
animations:^{
self.myview.alpha = 1;
}
completion:nil
];
}
];
}
How can I make the UIView blink twice every 5 seconds? (i.e. a pulse of two blinks)

Answer 1

Since you've flagged this with iOS7, I might suggest keyframe animation:
[UIView animateKeyframesWithDuration:2.5 delay:0.0 options:UIViewKeyframeAnimationOptionRepeat animations:^{
[UIView addKeyframeWithRelativeStartTime:0.0 relativeDuration:0.25 animations:^{
self.myview.alpha = 0.0;
}];
[UIView addKeyframeWithRelativeStartTime:0.5 relativeDuration:0.25 animations:^{
self.myview.alpha = 1.0;
}];
} completion:nil];
Tweak total duration (how often the cycle repeats), the relative start times (a % of the total duration), and the relative duration (again, a % of the total duration) as you see fit.

Answer 2

Change both of your delays to zero.
Set both durations to 1.25.
Use a timer to call the method every 2.5 seconds.
How do I use NSTimer?
Edit based on comments:
Use this instead:
-(void) showHideView {
if( self.view.alpha == 1.0 ) alpha = 0.0;
else alpha = 1.0;
}
- (void)timerCallback {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1.25 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
[self showHideView];
});
// repeat above code for 2.5, 3.75, 5.0
}
Make your timer call timerCallback every 5 seconds.