I am wanting to animate a ImageView's X Position and reset it if it reaches a certain X Position. For example, Start out a 700 and move to the left.. if it reaches 100 I want to reset it to 700. And do this continually over and over.
Pretty sure a timer would be needed, but not sure how to go about this as this is my first IOS app. Searching google turned up alot of animation stuff, but all was different which led to confusion. :)
Use this code
call [self animate:your_image_view];
- (void)animate:(UIImageView*)your_image
{
if (need_to_animate)
{
CGRect from = CGRectMake(10, 100, 200, 200);
CGRect to = CGRectMake(10, 700, 200, 200);
[UIView animateWithDuration:2 animations:^{
your_image.frame = from;
} completion:^(BOOL finished) {
your_image.frame = to;
[UIView animateWithDuration:2 animations:^{
your_image.frame = from;
} completion:^(BOOL finished) {
[self animate:your_image];
}];
}];
}
}
See here how to use UIView animations iPhone UIView Animation Best Practice Alternatively set up a timer loop and then adjust the frame/center of your view
Related
I want to make something like this:
Reference of image.
What I do: two UIImagesView, one with UIViewContentModeLeft and another with UIViewContentModeRight. I have a slider where I can change image frames. The solution seems to be ok, but I am not sure if this is the "right" one. Other suggestions are welcome.
Thanks!
use single Imageview for your concept it is my suggestion If you feel free use this else use your concept else go some thirdparty, where you need for modify the transparent, add the one Transparent UIView above the ImageView . set the frame as of Transparent UIView for Show as (0, 0, ImageView.frame.size.width/2,ImageView.frame.size.height) , for Hide (ImageView.frame.origin.X - 40, 0, ImageView.frame.size.width/2,ImageView.frame.size.height)
for example
To Show
TransparentView.hidden = NO;
TransparentView.alpha = 0.1;
[UIView animateWithDuration:0.25 animations:^{
TransparentView.frame = CGRectMake(0,
0,
ImageView.frame.size.width/2,
ImageView.frame.size.height);
TransparentView.alpha = 1.0f;
} completion:^(BOOL finished) {
// do some
}];
To hide
[UIView animateWithDuration:0.25 animations:^{
TransparentView.frame = CGRectMake(0 - self.view.frame.size.width,
0,
ImageView.frame.size.width/2,
ImageView.frame.size.height);
[TransparentView setAlpha:0.1f];
} completion:^(BOOL finished) {
TransparentView.hidden = YES;
}];
So the below code moves the self.nowGamePiece to the center of the board, but it doesn't not change the size to 500 x 500. In fact, no matter what those values (width and height in CGRectMake) are, size doesn't change in this animation.
Why? self.nowGamePiece should also change its size to 500x 500 too!
//self.nowGamePiece is a UIView
[UIView animateWithDuration:7 animations:^{
self.nowGamePiece.frame = CGRectMake(self.gameBoardImageView.center.x,self.gameBoardImageView.center.y, 500, 500);
//doing below only moves the self.nowGamePiece too. Size doesn't change
//self.nowGamePiece.frame = CGRectMake(100, 100, 500, 500);
} completion:^(BOOL finished){
return;
}];
I think this method may be bugged. I solved it using transform instead.
[UIView animateWithDuration:7 animations:^{
self.nowGamePiece.transform =CGAffineTransformMakeScale(7.0, 7.0);
self.nowGamePiece.center = CGPointMake(self.gameBoardImageView.center.x, self.gameBoardImageView.center.y);
} completion:^(BOOL finished){
return;
}];
Try setting the autoResizingMask property of your view. I suspect your image is a subview of your nowGamePiece view, and it's just not resizing the image when the frame of the superview gets changed.
self.nowGamePiece.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
self.nowGamePiece.autoresizesSubviews = YES;
Try this instead:
//self.nowGamePiece is a UIView
[UIView animateWithDuration:7 animations:^{
CGRect frame = self.nowGamePiece.frame;
frame = CGRectMake(self.gameBoardImageView.center.x, self.gameBoardImageView.center.y, 500, 500);
self.nowGamePiece.frame = frame;
} completion:^(BOOL finished){
return;
}];
I am trying to show the movement of a vehicle on a road in my app. For this I am keeping my vehicle stationary and moving the lanes in the road from top to bottom continuously to create the effect. The lanes are added as subview to roadView and I am trying to animate all the subviews in the roadView as seen in the code below.
The problem I am facing is that the lane nearest to the bottom is moving at a faster speed compared the one at the top in the beginning although I am calculating the duration based on constant speed.
-(void)animateLanes {
for (UIView *laneView in [self.roadView subviews]) {
if (laneView.tag < 10) {
float distance = self.view.frame.size.height - CGRectGetMaxY(laneView.frame);
float duration = distance/10;
[UIView animateWithDuration:duration animations:^{
laneView.frame = CGRectMake(laneView.frame.origin.x, self.view.frame.size.height+laneView.frame.size.height, laneView.frame.size.width, laneView.frame.size.height);
} completion:^(BOOL finished) {
laneView.frame = CGRectMake(self.roadView.frame.size.width/2 - 10, -laneView.frame.size.height, 20, 40);
[self nextStep:laneView];
}];
}
}
}
-(void) nextStep:(UIView *) laneView{
float distance = self.view.frame.size.height - CGRectGetMaxY(laneView.frame);
float duration = distance/10;
[UIView animateWithDuration:duration delay:0 options:UIViewAnimationOptionRepeat animations:^{
laneView.frame = CGRectMake(laneView.frame.origin.x, self.view.frame.size.height+laneView.frame.size.height, laneView.frame.size.width, laneView.frame.size.height);
} completion:^(BOOL finished) {
laneView.frame = CGRectMake(self.roadView.frame.size.width/2 - 10, -laneView.frame.size.height, 20, 40);
}];
}
I would most definitely look into SpriteKit for this kind of thing. The update loop in its SKScene will allow you to make sure everything is running smoothly.
However, if you do do this, you don't have to make all these UIView Animation calls. Do this:
//calculate duration and distance first, then:
[UIView animateWithDuration:duration animations:^{
for (UIView *laneView in [self.roadView subviews]) {
laneView.frame = CGRectMake(laneView.frame.origin.x, self.view.frame.size.height+laneView.frame.size.height, laneView.frame.size.width, laneView.frame.size.height);
}
} completion:^(BOOL finished) {
for (UIView *laneView in [self.roadView subviews]) {
laneView.frame = CGRectMake(self.roadView.frame.size.width/2 - 10, -laneView.frame.size.height, 20, 40);
[self nextStep:laneView];
}
}];
Although I do NOT advise doing any of this at all. Use a game library, namely SpriteKit because of its ease of integration and simplicity.
SpriteKit makes a lot more sense for this type of task, IMO. The logic would be similar and the objects would belong to SKScene instance which has a handy update method perfect for the loop effect you're aiming for.
I'm not sure whether I can describe it properly. It's a kind of UIView, and we see only it's part (with arrow,maybe. on the bottom of screen,maybe). User can click on it, and this view appears fullscreen(usually developer leaves there some additional information). How can I make it?
Try this:
-(void)show
{
[viewObj setFrame:CGRectMake(viewObj.frame.origin.x,viewObj.frame.origin.y,viewObj.frame.size.width, viewObj.frame.size.height)];//Here "viewObj.frame.origin.y" means 568
[UIView animateWithDuration:0.5 animations:^
{
[viewObj setFrame:CGRectMake(viewObj.frame.origin.x,0,viewObj.frame.size.width, viewObj.frame.size.height)];
}
completion:^(BOOL finished)
{
}];
}
-(void)hide
{
[viewObj setFrame:CGRectMake(viewObj.frame.origin.x,viewObj.frame.origin.y,viewObj.frame.size.width, viewObj.frame.size.height)];//Here "viewObj.frame.origin.y" means 0
[UIView animateWithDuration:0.5 animations:^
{
[viewObj setFrame:CGRectMake(viewObj.frame.origin.x,568,viewObj.frame.size.width, viewObj.frame.size.height)];
}
completion:^(BOOL finished)
{
}];
}
i just put the logic that just setting of view Y coordinate of That View and when user click on Button. that et animation and at the re setting the view frame with Y coordinate setting like:
yourview.frame = CGRectMake(0,280,320,568);
[UIView animateWithDuration:2
delay:0.1
options: UIViewAnimationOptionTransitionFlipFromBottom
animations:^{
yourview.frame = CGRectMake(0, 0, 320, 568);
}
completion:^(BOOL finished){
}];
Also see this example:
https://github.com/crocodella/PullableView
Here above github demo this same that you are looking for its output like:
Look at UIView reference:
https://developer.apple.com/library/ios/documentation/uikit/reference/uiview_class/uiview/uiview.html
Specifically:
#property(nonatomic) CGPoint center
And
+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations
Example:
[UIView animateWithDuration:2.0 animations:^{
myView.center = CGPointMake(self.view.center.x, self.view.center.y + myOffset);
}];
Duration is in seconds. In this case, 2 seconds.
If you're using AutoLayout, you probably want to change the layout constant, rather then center property.
About Layout Constrains:
https://developer.apple.com/library/ios/documentation/AppKit/Reference/NSLayoutConstraint_Class/NSLayoutConstraint/NSLayoutConstraint.html
Look at constant property. You can also drag a constrain outlet from Interface Builder and access its constant. It's really simple once you get to know it a bit.
I have a zoom animation in which when I perform an action, a view comes up in a zooming fashion.
The code I use to do this is,
CGFloat xpos = self.view.frame.origin.x;
CGFloat ypos = self.view.frame.origin.y;
popContents.view.frame = CGRectMake(xpos+100,ypos+150,5,5);
[UIView beginAnimations:#"Zoom" context:NULL];
[UIView setAnimationDuration:0.8];
popContents.view.frame = CGRectMake(320, ypos-70, 350, 350);
[UIView commitAnimations];
[self.view.superview addSubview:popContents.view];
I just realized that in ios4.0 usage in this fashion is not recommended and animations using block based methods is recommended..
I tried looking for any sort of example which would give me a hint to get the zooming effect I need using the block based methods but I have not been able to find any...
It would be great if anyone could help me out in this...
i figured it out...
Apparently "zoom" is just a name and does not do anything( as far as I experimented with it)
Here is how I achieve the effect using animate with block based methods...
[UIView animateWithDuration:0.8 animations:^ { popContents.view.frame = CGRectMake(160, 70, 350, 350);
[self.view.superview bringSubviewToFront:self.view];
[self.view.superview addSubview:popContents.view]; }
completion: ^(BOOL finished) {
NSLog(#"DONE");
}
];
Now there is just 1 issue I am not able to figure out..
Here is the edited code -
[UIView transitionWithView:self.view duration:1
options:UIViewAnimationOptionTransitionFlipFromLeft
animations:^
{
popContents.view.frame = CGRectMake(160, 70, 350, 350);
[self.view.superview bringSubviewToFront:self.view];
[self.view.superview addSubview:popContents.view];
}
completion: ^(BOOL finished)
{
NSLog(#"DONE");
}];
so what happens here is that the table view rotates while the popContents view zooms to position.. I understand that is what will happen since I had given transitionWithView:self.view
however, how will I be able to add this effect to the popContents view ( the view which zooms to position)... is it possible?
I tried transitionWithView:popContents.view but that does not seem to have any additional effect to the zooming animation.
Could someone tell me what I am doing wrong?