我正在尝试添加我创建的UIViewController，但我希望它是屏幕大小的一半。
我正在使用此代码：
myController *tmController = [[myControlleralloc] initWithNibName:@"myController" bundle:nil];
tmController .view.frame = CGRectMake(10, 100, 100, 100);
[appDelegate.viewController presentModalViewController:tmController animated:YES];
但是我在所有的屏幕上看到它，我的代码是什么？
答案 0 :(得分：1)
嗨，您可以通过类别文件来实现这一点.....
.h文件：
#define kSemiModalAnimationDuration 0.5
#define kSemiModalDidShowNotification @"kSemiModalDidShowNotification"
#define kSemiModalDidHideNotification @"kSemiModalDidHideNotification"
#define kSemiModalWasResizedNotification @"kSemiModalWasResizedNotification"
@interface UIViewController (KNSemiModal)
-(void)presentSemiViewController:(UIViewController*)vc;
-(void)presentSemiView:(UIView*)vc;
-(void)dismissSemiModalView;
-(void)resizeSemiView:(CGSize)newSize;
@end
.m文件：
#import "UIViewController+KNSemiModal.h"
#import <QuartzCore/QuartzCore.h>
@interface UIViewController (KNSemiModalInternal)
-(UIView*)parentTarget;
-(CAAnimationGroup*)animationGroupForward:(BOOL)_forward;
@end
@implementation UIViewController (KNSemiModalInternal)
-(UIView*)parentTarget {
// To make it work with UINav & UITabbar as well
UIViewController * target = self;
while (target.parentViewController != nil) {
target = target.parentViewController;
}
return target.view;
}
-(CAAnimationGroup*)animationGroupForward:(BOOL)_forward {
// Create animation keys, forwards and backwards
CATransform3D t1 = CATransform3DIdentity;
t1.m34 = 1.0/-900;
t1 = CATransform3DScale(t1, 0.95, 0.95, 1);
t1 = CATransform3DRotate(t1, 15.0f*M_PI/180.0f, 1, 0, 0);
CATransform3D t2 = CATransform3DIdentity;
t2.m34 = t1.m34;
t2 = CATransform3DTranslate(t2, 0, [self parentTarget].frame.size.height*-0.08, 0);
t2 = CATransform3DScale(t2, 0.8, 0.8, 1);
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform"];
animation.toValue = [NSValue valueWithCATransform3D:t1];
animation.duration = kSemiModalAnimationDuration/2;
animation.fillMode = kCAFillModeForwards;
animation.removedOnCompletion = NO;
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut]];
CABasicAnimation *animation2 = [CABasicAnimation animationWithKeyPath:@"transform"];
animation2.toValue = [NSValue valueWithCATransform3D:(_forward?t2:CATransform3DIdentity)];
animation2.beginTime = animation.duration;
animation2.duration = animation.duration;
animation2.fillMode = kCAFillModeForwards;
animation2.removedOnCompletion = NO;
CAAnimationGroup *group = [CAAnimationGroup animation];
group.fillMode = kCAFillModeForwards;
group.removedOnCompletion = NO;
[group setDuration:animation.duration*2];
[group setAnimations:[NSArray arrayWithObjects:animation,animation2, nil]];
return group;
}
@end
@implementation UIViewController (KNSemiModal)
-(void)presentSemiViewController:(UIViewController*)vc {
[self presentSemiView:vc.view];
}
-(void)presentSemiView:(UIView*)view {
// Determine target
UIView * target = [self parentTarget];
if (![target.subviews containsObject:view]) {
// Calulate all frames
CGRect sf = view.frame;
CGRect vf = target.frame;
CGRect f = CGRectMake(0, vf.size.height-sf.size.height, vf.size.width, sf.size.height);
CGRect of = CGRectMake(0, 0, vf.size.width, vf.size.height-sf.size.height);
// Add semi overlay
UIView * overlay = [[UIView alloc] initWithFrame:target.bounds];
overlay.backgroundColor = [UIColor blackColor];
// Take screenshot and scale
UIGraphicsBeginImageContextWithOptions(target.bounds.size, YES, [[UIScreen mainScreen] scale]);
[target.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIImageView * ss = [[UIImageView alloc] initWithImage:image];
[overlay addSubview:ss];
[target addSubview:overlay];
// Dismiss button
// Don't use UITapGestureRecognizer to avoid complex handling
UIButton * dismissButton = [UIButton buttonWithType:UIButtonTypeCustom];
[dismissButton addTarget:self action:@selector(dismissSemiModalView) forControlEvents:UIControlEventTouchUpInside];
dismissButton.backgroundColor = [UIColor clearColor];
dismissButton.frame = of;
[overlay addSubview:dismissButton];
// Begin overlay animation
[ss.layer addAnimation:[self animationGroupForward:YES] forKey:@"pushedBackAnimation"];
[UIView animateWithDuration:kSemiModalAnimationDuration animations:^{
ss.alpha = 0.5;
}];
// Present view animated
view.frame = CGRectMake(0, vf.size.height, vf.size.width, sf.size.height);
[target addSubview:view];
view.layer.shadowColor = [[UIColor blackColor] CGColor];
view.layer.shadowOffset = CGSizeMake(0, -2);
view.layer.shadowRadius = 5.0;
view.layer.shadowOpacity = 0.8;
view.layer.shouldRasterize = YES;
view.layer.rasterizationScale = [[UIScreen mainScreen] scale];
UIBezierPath *path = [UIBezierPath bezierPathWithRect:view.bounds];
view.layer.shadowPath = path.CGPath;
[UIView animateWithDuration:kSemiModalAnimationDuration animations:^{
view.frame = f;
} completion:^(BOOL finished) {
if(finished){
[[NSNotificationCenter defaultCenter] postNotificationName:kSemiModalDidShowNotification
object:self];
}
}];
}
}
-(void)dismissSemiModalView {
UIView * target = [self parentTarget];
UIView * modal = [target.subviews objectAtIndex:target.subviews.count-1];
UIView * overlay = [target.subviews objectAtIndex:target.subviews.count-2];
[UIView animateWithDuration:kSemiModalAnimationDuration animations:^{
modal.frame = CGRectMake(0, target.frame.size.height, modal.frame.size.width, modal.frame.size.height);
} completion:^(BOOL finished) {
[overlay removeFromSuperview];
[modal removeFromSuperview];
}];
// Begin overlay animation
UIImageView * ss = (UIImageView*)[overlay.subviews objectAtIndex:0];
[ss.layer addAnimation:[self animationGroupForward:NO] forKey:@"bringForwardAnimation"];
[UIView animateWithDuration:kSemiModalAnimationDuration animations:^{
ss.alpha = 1;
} completion:^(BOOL finished) {
if(finished){
[[NSNotificationCenter defaultCenter] postNotificationName:kSemiModalDidHideNotification
object:self];
}
}];
}
- (void)resizeSemiView:(CGSize)newSize {
UIView * target = [self parentTarget];
UIView * modal = [target.subviews objectAtIndex:target.subviews.count-1];
CGRect mf = modal.frame;
mf.size.width = newSize.width;
mf.size.height = newSize.height;
mf.origin.y = target.frame.size.height - mf.size.height;
UIView * overlay = [target.subviews objectAtIndex:target.subviews.count-2];
UIButton * button = [[overlay subviews] objectAtIndex:1];
CGRect bf = button.frame;
bf.size.height = overlay.frame.size.height - newSize.height;
[UIView animateWithDuration:kSemiModalAnimationDuration animations:^{
modal.frame = mf;
button.frame = bf;
} completion:^(BOOL finished) {
if(finished){
[[NSNotificationCenter defaultCenter] postNotificationName:kSemiModalWasResizedNotification
object:self];
}
}];
}
@end
#pragma mark -
// Convenient category method to find actual ViewController that contains a view
// Adapted from: http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone
@implementation UIView (FindUIViewController)
- (UIViewController *) containingViewController {
UIView * target = self.superview ? self.superview : self;
return (UIViewController *)[target traverseResponderChainForUIViewController];
}
- (id) traverseResponderChainForUIViewController {
id nextResponder = [self nextResponder];
BOOL isViewController = [nextResponder isKindOfClass:[UIViewController class]];
BOOL isTabBarController = [nextResponder isKindOfClass:[UITabBarController class]];
if (isViewController && !isTabBarController) {
return nextResponder;
} else if(isTabBarController){
UITabBarController *tabBarController = nextResponder;
return [tabBarController selectedViewController];
} else if ([nextResponder isKindOfClass:[UIView class]]) {
return [nextResponder traverseResponderChainForUIViewController];
} else {
return nil;
}
}
@end
#pragma mark -
// Convenient category method to find actual ViewController that contains a view
// Adapted from: http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone
@implementation UIView (FindUIViewController)
- (UIViewController *) containingViewController {
UIView * target = self.superview ? self.superview : self;
return (UIViewController *)[target traverseResponderChainForUIViewController];
}
- (id) traverseResponderChainForUIViewController {
id nextResponder = [self nextResponder];
BOOL isViewController = [nextResponder isKindOfClass:[UIViewController class]];
BOOL isTabBarController = [nextResponder isKindOfClass:[UITabBarController class]];
if (isViewController && !isTabBarController) {
return nextResponder;
} else if(isTabBarController){
UITabBarController *tabBarController = nextResponder;
return [tabBarController selectedViewController];
} else if ([nextResponder isKindOfClass:[UIView class]]) {
return [nextResponder traverseResponderChainForUIViewController];
} else {
return nil;
}
}
@end
和通话声明......
KNFirstViewController *view=[[KNFirstViewController alloc]init];
[self presentSemiView:view.view];
查看示例项目Here