How to show UIView like UIAction sheet using UIView animations in iOS? - ios

Question

Hi I am very new for iOS and I have added a UIView at bottom of MainViewController.
And when I tap on a button that UIView displays like "UIAction sheet" using UIView animations.
And for this I have tried the code below but animations are not applying when I tap on the button.
Please help me.
my code:-
#import "AnimationUIview.h"
#interface AnimationUIview ()
{
UIView * firstView;
NSLayoutConstraint * Bottom;
}
#end
#implementation AnimationUIview
- (void)viewDidLoad {
[super viewDidLoad];
firstView = [[UIView alloc] init];
firstView.backgroundColor = [UIColor lightGrayColor];
firstView.translatesAutoresizingMaskIntoConstraints = NO;
[self.view addSubview:firstView];
NSDictionary * views = NSDictionaryOfVariableBindings(firstView);
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:#"H:|-0-[firstView]-0-|" options:0 metrics:nil views:views]];
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:#"V:[firstView(100)]" options:0 metrics:nil views:views]];
Bottom = [NSLayoutConstraint constraintWithItem:firstView
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationEqual
toItem:self.view
attribute:NSLayoutAttributeBottom
multiplier:1
constant:80];
[self.view addConstraint:Bottom];
}
- (IBAction)buttonAction:(id)sender {
[UIView animateWithDuration:0.5f
delay:0.0f
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{
Bottom.constant = -10;
}
completion:nil];
}
#end

Answer 1

#import "AnimationUIview.h"
#interface AnimationUIview () {
UIView * firstView;
NSLayoutConstraint * Bottom;
BOOL isshown;
}
#end
#implementation AnimationUIview
-(void)viewDidLoad {
[super viewDidLoad];
firstView = [[UIView alloc] init];
firstView.backgroundColor = [UIColor lightGrayColor];
firstView.translatesAutoresizingMaskIntoConstraints = NO;
[self.view addSubview:firstView];
NSDictionary * views = NSDictionaryOfVariableBindings(firstView);
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:#"H:|-0-[firstView]-0-|" options:0 metrics:nil views:views]];
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:#"V:[firstView(100)]" options:0 metrics:nil views:views]];
Bottom = [
NSLayoutConstraint
constraintWithItem:firstView
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationEqual
toItem:self.view
attribute:NSLayoutAttributeBottom
multiplier:1
constant:80
];
[self.view addConstraint:Bottom];
isshown=No;
}
- (IBAction)buttonAction:(id)sender {
if (isshown==NO) {
firstview.frame = CGRectMake(0,0, SCREEN_WIDTH, 100);
[UIView animateWithDuration:0.40 animations:^{
firstview.frame = CGRectMake(0, SCREEN_HEIGHT-100, SCREEN_WIDTH, 100);
[firstview setAlpha:0.0f];
} completion:^(BOOL finished) {
}];
isshow=Yes;
} else {
firstview.frame = CGRectMake(0, SCREEN_HEIGHT-100, SCREEN_WIDTH, 100);
[UIView animateWithDuration:0.40 animations:^{
firstview.frame = CGRectMake(0,0, SCREEN_WIDTH, 100);
firstview.alpha = 1.0f;
} completion:^(BOOL finished) {
[firstview setHidden:YES];
}];
isshown=No;
}
#end