I am using the following to make a UIImageView slide a little bit forward, and then slide back farther for a parallax scrolling effect.
Code:
[UIView animateWithDuration:0.2f animations:^{
spendrBckGrnd.frame = CGRectMake(spendrBckGrnd.frame.origin.x + 20, 0, spendrBckGrnd.frame.size.width, spendrBckGrnd.frame.size.height);
}];
[UIView animateWithDuration:0.4f animations:^{
spendrBckGrnd.frame = CGRectMake(spendrBckGrnd.frame.origin.x - 80, 0, spendrBckGrnd.frame.size.width, spendrBckGrnd.frame.size.height);
}];
I am wondering how I might go about applying some easing into the animation, right now if just abruptly slides back and forth quickly. I would like to ease into and out of the sliding animations.
You need to do the second animation block after the first one completes.
[UIView animateWithDuration:0.2f animations:^{
spendrBckGrnd.frame = CGRectMake(spendrBckGrnd.frame.origin.x + 20, 0, spendrBckGrnd.frame.size.width, spendrBckGrnd.frame.size.height);
} completion:^{
[UIView animateWithDuration:0.2f animations:^(BOOL finished){
spendrBckGrnd.frame = CGRectMake(spendrBckGrnd.frame.origin.x - 80, 0, spendrBckGrnd.frame.size.width, spendrBckGrnd.frame.size.height);
}];
}];
This will do the trick:
[UIView animateWithDuration:0.2f delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^(void){
//do your animations
} completion:^(BOOL finished){
}];
Check out this tutorial on UIView animation
http://mobile.tutsplus.com/tutorials/iphone/ios-sdk_uiview-animations/
UIView has a method
// [UIView animateWithDuration:(NSTimeInterval) delay:(NSTimeInterval) options:(UIViewAnimationOptions)animations:^(void)animations completion:^(BOOL finished)completion];
typedef enum {
UIViewAnimationCurveEaseInOut, // slow at beginning and end
UIViewAnimationCurveEaseIn, // slow at beginning
UIViewAnimationCurveEaseOut, // slow at end
UIViewAnimationCurveLinear
}
[UIView animateWithDuration:0.6f
delay:0.1f
options:UIViewAnimationCurveEaseInOut
animations:^{
[starView setCenter:CGPointMake(0, 0)];
[starView setAlpha:0.0f];
}
completion:^(BOOL finished){
[starView removeFromSuperview];
points++;
}
];
Also check out this control on github that creates a parallax effect using a custom container view, much like the top view of Path's timeline.
https://github.com/modocache/MDCParallaxView
Related
I have an app in which I use a lot of animations with ease in/out curves. I use this function in all cases: UIView animateWithDuration:delay:options:animations:completion
All these animations are working ok, but now I am trying to add one to a drawer that pops in and out, and for some reason this particular animation is always linear:
[UIView animateWithDuration:2 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
self.activityBar.view.frame = CGRectMake(0, self.activityBar.view.frame.origin.y, self.activityBar.view.frame.size.width, 20);
} completion:nil];
Why is this animation linear, while other animations with the same option are curved?
This is the view hierarchy for self.activityBar.view
-UIViewController
-UIViewController
-UIViewController (animation code lives here)
-UIViewController (activityBar)
-UIView (activityBar.view)
//Set old Frame for activityBar Here
[UIView animateWithDuration:2.0 delay:0.0 options:UIViewAnimationOptionCurveEaseOut animations:^{
[self.view layoutIfNeeded];
//Update to the new frame
self.activityBar.view.frame = CGRectMake(0, self.activityBar.view.frame.origin.y, self.activityBar.view.frame.size.width, 20);
} completion:^(BOOL finished) {
}];
I'm trying to show and hide a tableView with an animation "transition from left to right & right to left"
This what i already tired it worked but after using a random values in the CGRectMake,
Do anyone can help me to fix it please
-(void)Display:(UITableView *)tableView :(UIView *)view{
tableView.alpha=1;
[UIView animateWithDuration:0.35
animations:^{
tableView.frame = CGRectMake(-209, 440, 180, 209);
}
completion:^(BOOL finished){
[tableView setHidden:YES];
}
];
}
-(void)Hide:(UITableView *)tableView :(UIView *)view :(int )tb{
tableView.alpha=1;
[tableView setHidden:NO];
[UIView animateWithDuration:.45
animations:^{
tableView.frame = CGRectMake(3, 442, 180, 209);
}
];
}
You can use this code:
[UIView transitionFromView:firstView
toView:secondView//table view
duration:0.5
options:UIViewAnimationOptionTransitionFlipFromLeft
completion:^(BOOL finished) {
[firstView.superView addSubview:secondView];
[firstView.superView sendSubviewToBack:firstView];
}];
It's hard to tell from your question but by "transition from left to right & right to left"
do you want something like this...?
For animating out left
[UIView animateWithDuration:1.0f
delay:0.0f
options:UIViewAnimationOptionBeginFromCurrentState | UIViewAnimationOptionCurveEaseInOut
animations:^{
self.tableView.frame = CGRectMake(0.0f, -self.tableView.frame.size.width, self.tableView.frame.size.width, self.tableView.frame.size.height);
}
completion:NULL];
For animating out right
[UIView animateWithDuration:1.0f
delay:0.0f
options:UIViewAnimationOptionBeginFromCurrentState | UIViewAnimationOptionCurveEaseInOut
animations:^{
self.tableView.frame = CGRectMake(0.0f, self.view.bounds.size.width, self.tableView.frame.size.width, self.tableView.frame.size.height);
}
completion:NULL];
For animating in
[UIView animateWithDuration:1.0f
delay:0.0f
options:UIViewAnimationOptionBeginFromCurrentState | UIViewAnimationOptionCurveEaseInOut
animations:^{
self.tableView.frame = CGRectMake(0.0f, 0.0f, self.tableView.frame.size.width, self.tableView.frame.size.height);
}
completion:NULL];
You can put table reloads etc. in your completion blocks? and then animate the tableView back in?
If you want animation like Facebook then use :- ECSlidingViewController
http://kingscocoa.com/tutorials/slide-out-navigation/
Or
If you want normal animation then set frame and reduce alpha from 1.0 to 0.0 with duration.
I use animateKeyframesWithDuration to simple animate my view:
[UIView animateKeyframesWithDuration:1.0 delay:0.0 options:0 animations:^{
[UIView addKeyframeWithRelativeStartTime:0.0 relativeDuration:0.5 animations:^{
containerView.center = CGPointMake(containerView.center.x, 150);
}];
[UIView addKeyframeWithRelativeStartTime:0.5 relativeDuration:0.5 animations:^{
containerView.center = oldCenter;
}];
}completion:^(BOOL finished) {
}];
After the animation finished (completion block called with finished = YES), the UIViewController isn't responsive, e.g. I can't press any UIButton on top the UIViewController.
Why that?
I added this line in the completion block:
[transitionContext completeTransition:NO];
That fix my problem.
I want an animated UIView that will move like this lever on this image. seesaw but i have no great knowledge on animations in xcode. I can only do sliding like this
[UIView animateWithDuration:1.0 delay:2.0 options:(UIViewAnimationCurveEaseInOut|UIViewAnimationOptionAllowUserInteraction)
animations:^
{
[UIView setAnimationDelegate:self];
self.bug.center = CGPointMake(75, 200);
}
completion:^(BOOL finished)
{
NSLog(#"Move to left done");
}
];
Is there a way that i can use manipulate this code and animate it like a seesaw?
I am trying to animate one of my image form bottom to Top of my screen , for that i am implementing an animation that the current width and height of image will become half during the transition stage and will take its original size once animation completes.
The issue is once the 1st animation is done it hold's for a while and then starts another animation , i want a smooth animation .
Here is the code :
[UIView animateWithDuration:1.0
delay:0.5
options:UIViewAnimationOptionTransitionCurlUp
animations:^{
[_myImageView setFrame:CGRectMake(20.0, 220.0, currentframe.size.width/2, currentframe.size.height/2)];
} completion:^(BOOL finished)
{
if (finished)
{
[UIView animateWithDuration:1.0
delay:0
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{
[_myImageView setFrame:CGRectMake(20.0, 20.0, currentframe.size.width, currentframe.size.height)];
} completion:^(BOOL finished) {
if (finished) {
NSLog(#"2 nd log ");
}
}];
NSLog(#"animation fisnished !!");
}
}];
What should be done ?
try this:
[UIView animateWithDuration:1.0
delay:0
options:UIViewAnimationOptionCurveLinear// use CurveLinear option
animations:^{
} completion:^(BOOL finished) {
}];