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Is it bad practice to stack animations on top of each other?


Is it bad practice to stack animations on top of each other?

By : Emca S
Date : November 20 2020, 11:01 PM
I wish did fix the issue. In your case I would go with a div and a pseudo.
Here both images scales with the div and the opacity on the pseudo.
code :
.crane-origami {
  position: relative;
  margin: 20px 0 0 20px;
  width: 150px;
  height: 150px;
  background: url(http://placehold.it/150/f0f);
}
.crane-origami:before {
  position: absolute;
  content: '';
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url(http://placehold.it/150/f00);
}
.crane-origami {
  animation: breathe 2s infinite alternate;
}
.crane-origami:before {
  opacity: 1;
  animation: trans 2s infinite alternate;
}
@keyframes trans {
  from {}
  to {
    opacity: 0;
  }
}
@keyframes breathe {
  from {}
  to {
    transform: scale(1.2);
  }
}
<div class="crane-origami">
</div>


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Animations and CPU - best practice?

Animations and CPU - best practice?


By : Jason Brown
Date : March 29 2020, 07:55 AM
will help you Use OpenGL directly. Using Animation is sitting you on top of a full view system doing a lot more than you need for doing a game-like experience.
Correct way to stack UIView animations and blocks?

Correct way to stack UIView animations and blocks?


By : Vaidehi Hemant Hindl
Date : March 29 2020, 07:55 AM
hope this fix your issue What you're doing is correct. Sometimes the nesting can get ugly. One alternative for readability is to put each animation in its own method:
code :
-(IBAction)someButtonPressed:(id)sender {
    [self saveSomeData];
    [self fadeInAndOut];
}

-(void)fadeInAndOut {
    [UIView animateWithDuration:.2f
                     animations:^{
                         // STEP 1: FADE IN
                         [self.flashView setAlpha:1.f];
                     }
                     completion:[self fadeOut]
     ];
}

-(void (^)(BOOL))fadeOut {
    return ^(BOOL finished) {
        [UIView animateWithDuration:.9f
                         animations:^{
                             // STEP 2: FADE OUT
                             [self.flashView setAlpha:0.f];
                         }
                         completion:[self cleanUpFlashView]
         ];
    };
}

-(void (^)(BOOL))cleanUpFlashView {
    return ^(BOOL finished){
        // STEP 3: CLEAN UP
        [self.flashView removeFromSuperview];
    };
}
Any simpler way to stack animations?

Any simpler way to stack animations?


By : Carla MIla
Date : March 29 2020, 07:55 AM
should help you out If your animations are generic enough, there's no reason you can't use a recursive function that calls itself on completion. You'd have to pass whatever parameters that differ between calls and be able to tell when you should stop animating.
When you have a bunch of code blocks, I tend to lean towards this approach.
iOS stack Animations in series

iOS stack Animations in series


By : anonymous
Date : March 29 2020, 07:55 AM
With these it helps You should be using the block based animation for all animations like these.
For an animation like this the animateKeyFrames block would be perfect...
code :
// set duration for the entire sequence of animations
[UIView animateKeyFramesWithDuration:6
                               delay:0
                             options:0
                          animations:^{
                              // add fade in keyframe
                              // starts at 0% lasts for 33% of animation
                              [UIView addKeyFrameWithRelativeStartTime:0
                                                      relativeDuration:0.333
                                                            animations:^{
                                                                view.alpha = 1.0;
                                                            }];
                              // add rotation key frame
                              // starts at 33% lasts for 33% of animation
                              [UIView addKeyFrameWithRelativeStartTime:0.333
                                                      relativeDuration:0.333
                                                            animations:^{
                                                                view.transform = CGAffineTransformMakeRotation(rotationAngle);
                                                            }];
                              // add fade out key frame
                              // starts at 66% lasts for 33% of animation
                              [UIView addKeyFrameWithRelativeStartTime:0.666
                                                      relativeDuration:0.333
                                                            animations:^{
                                                                view.alpha = 0.0;
                                                            }];
                          }
                          completion:nil];
Clear back stack but keep transition animations

Clear back stack but keep transition animations


By : Shaney Boii94
Date : March 29 2020, 07:55 AM
this one helps. My application scenario looks like this : , Change your code to
code :
public class TaskActivity extends FragmentActivity {

    private void launchNextTask(Task nextTask) {
        Intent intent = new Intent(TaskActivity.this, TaskActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.putExtra(TASK_KEY, nextTask);
        startActivity(intent);
        overridePendingTransition(R.anim.slide_in, R.anim.slide_out);
    }
}
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