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) {
}];
Related
I'm making a simple animation where when a button is tapped it will change from current position to a certain point. But what's happening is the opposite: it goes from the destination point to the original position. Here's my code:
[UIView animateWithDuration:1.0
delay:0.0
usingSpringWithDamping:0.2
initialSpringVelocity:0.0
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{
[self.view layoutIfNeeded];
CGFloat amount = 100;
self.checkButton.frame = CGRectOffset(self.checkButton.frame, amount, 0);
} completion:^(BOOL finished) {
}];
Make an outlet to the constraint that determine the horizontal position of the checkButton. e.g."hPos".
- (IBAction)tapHandler:(id)sender {
self.hPos.constant = self.hPos.constant + 100;
[UIView animateWithDuration:1.0
delay:0.0
usingSpringWithDamping:0.2
initialSpringVelocity:0.0
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{ [self.view layoutIfNeeded]; }
completion:nil];
}
I have six button on view with two pair of two grid.The problem is how to show button with animation, here I attach example url how to create this type of animation.
In this example when you click on menu button then show button in side menu view with animation
https://github.com/djardon/SideMenuFrostedAnimated
I tried this but I can't get any success.
I have two button one is btnHome and second is btnAbout:
-(void)animationStart
{
[btnHome setAlpha:0.f];
[UIView animateWithDuration:1.f delay:0.f options:UIViewAnimationOptionCurveEaseIn animations:^{
[btnHome setAlpha:0.f];
} completion:^(BOOL finished) {
[UIView animateWithDuration:2.f delay:0.f options:UIViewAnimationOptionCurveEaseInOut animations:^{
[btnHome setAlpha:1.f];
[self animationStart2];
} completion:nil];
}];
}
-(void)animationStart2
{
[btnAbout setAlpha:0.0f];
//fade in
[UIView animateWithDuration:2.0f animations:^{
[btnAbout setAlpha:1.0f];
} completion:^(BOOL finished) {
//fade out
[UIView animateWithDuration:2.0f animations:^{
[btnAbout setAlpha:0.0f];
} completion:nil];
}];
}
Try this.
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
btnHome.alpha=0.0;
btnAbout.alpha=0.0;
}
-(void)animationStart
{
[UIView animateWithDuration:0.4f delay:0.0f options: UIViewAnimationOptionCurveEaseInOut animations:^{
btnHome.alpha=1.0;
} completion:^(BOOL finished) {
[self animationStart2];
}];
}
-(void)animationStart2
{
[UIView animateWithDuration:0.4f delay:0.0f options: UIViewAnimationOptionCurveEaseInOut animations:^{
btnAbout.alpha=1.0;
} completion:^(BOOL finished) {
}];
}
- (IBAction)btnClick:(id)sender
{
[self animationStart];
}
Here initially i am setting the buttons alpha value to 0.0f. On click of third button i am showing these two buttons.
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?
At least I would dream of this Animation Flow:
FadeIn to 50% with alpha:0.5 for 2 seconds
Then fadeIn to 100% with alpha:1 for 2 seconds
Then fade out to 0% with alpha:0 for 4 seconds
After the visible animation ends, the text for the label shall be changed and then the fade routine should start again as shown above.
I feel that this code here does not allow the step by step fade animation and the code commences too early without waiting to finish the Fade out section.
//A FOR Loop sets text for the _label then the Animation routine should start:
- (IBAction)startFade:(id)sender
{
[_label setAlpha:0.f];
[UIView animateWithDuration:2.f
delay:0.f
options:UIViewAnimationOptionCurveEaseIn
animations:^{
[_label setAlpha:1.f];
}
completion:^(BOOL finished) {
[UIView animateWithDuration:2.f
delay:0.f
options:UIViewAnimationOptionCurveEaseInOut
animations:^{
[_label setAlpha:0.f];
}
completion:nil];
}
];
}
// Somehow the code shall wait here for ending the visible (!!) animation in the UI
// to set a new text for _label with the FOR Loop
The whole issue took me some days to figure out so far. But I am stuck here with the problem to pause the code for a while as it does not automatically wait for the visual finishing of the animation which makes it difficult for me to go on.
I'm sure that is what you are really looking for; but it meets your description:
- (IBAction)startFade:(id)sender {
[_label setAlpha:0.f];
[UIView animateWithDuration:2.f delay:0.f options:UIViewAnimationOptionCurveLinear animations:^{
[_label setAlpha:0.5f];
} completion:^(BOOL finished) {
NSLog(#"1st step is done.");
[UIView animateWithDuration:2.f delay:0.f options:UIViewAnimationOptionCurveLinear animations:^{
[_label setAlpha:1.f];
} completion:^(BOOL finished) {
NSLog(#"2nd step is done.");
[UIView animateWithDuration:4.f delay:0.f options:UIViewAnimationOptionCurveLinear animations:^{
[_label setAlpha:0.f];
} completion:^(BOOL finished) {
NSLog(#"3rd step is done, text will be changed.");
// let me change the text
[_label setText:[[NSDate date] description]];
// let me start the animation over, welcome to my infinite loop.
[self startFade:nil];
}];
}];
}];
}
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