iOS实现翻页效果动画实例代码

#pragma mark - 下一页按钮响应事件- (void)nextPage:(UIButton *)btn {  _forwardBtn.enabled = YES;  if (_count<_arr.count-1) {    btn.enabled = YES;    _label.text = [_arr objectAtIndex:_count+1];    NSString *subtypeString;    subtypeString = kCATransitionFromRight;    [self transitionWithType:@"pageCurl" WithSubtype:subtypeString ForView:self.view];    _count = _count + 1;  } else {    _count = _arr.count - 1;    btn.enabled = NO;    [self showAlert:@"已经是最后一页咯,亲(づ￣ 3￣)づ"];  }  NSLog(@"%ld", (long)_count);}#pragma CATransition动画实现/** * 动画效果实现 * * @param type  动画的类型 在开头的枚举中有列举,比如 CurlDown//下翻页,CurlUp//上翻页,FlipFromLeft//左翻转,FlipFromRight//右翻转 等... * @param subtype 动画执行的起始位置,上下左右 * @param view  哪个view执行的动画 */- (void) transitionWithType:(NSString *) type WithSubtype:(NSString *) subtype ForView : (UIView *) view {  CATransition *animation = [CATransition animation];  animation.duration = 0.7f;  animation.type = type;  if (subtype != nil) {    animation.subtype = subtype;  }  animation.timingFunction = UIViewAnimationOptionCurveEaseInOut;  [view.layer addAnimation:animation forKey:@"animation"];}

#pragma mark - 手势- (void)configTapGes {  _fromRightSwip = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(nextPage:)];  _fromRightSwip.direction = UISwipeGestureRecognizerDirectionLeft;  [self.view addGestureRecognizer:_fromRightSwip];  _fromLeftSwip = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(forwardPage:)];  _fromLeftSwip.direction = UISwipeGestureRecognizerDirectionRight;  [self.view addGestureRecognizer:_fromLeftSwip];}//判断是否是第一次进入程序if (![[[NSUserDefaults standardUserDefaults] objectForKey:@"isFirst"] isEqualToString:@"yes"]) {      //显示提示    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"tishi" message:@"" delegate:self cancelButtonTitle:@"晓得了" otherButtonTitles: nil];    [alert show];    [[NSUserDefaults standardUserDefaults]setObject:@"yes" forKey:@"isFirst"];  }