ios 翻页效果动画

项目当中要实现一个电子档案，效果呢是类似小说翻页的效果。很简单，先来说一下实现思路

写一个用来接收你想展示信息的控件，如果只是文字展示，那就label，如果带图片什么的，那就自定义一个view

然后就是左右滑动的手势，在左右手势实现方法中做数据判断展示，加上动画效果就ok 了

1、在self.view 上创建label

2、添加左右手势

3、根据左右手势实现方法，给 label.text 数组判断赋值

4、执行翻页动画

一、声明属性

@interface FilesViewController ()

@property(nonatomic, strong) NSArray *arr;

@property(nonatomic, strong) UILabel *label;

@property(nonatomic, strong) UIView *labelView;

@property(nonatomic, strong) UISwipeGestureRecognizer *fromRightSwip;

@property(nonatomic, strong) UISwipeGestureRecognizer *fromLeftSwip;

@property(nonatomic, assign) NSInteger count;

@property(nonatomic, strong) UIBarButtonItem *nextBtn;

@property(nonatomic, strong) UIBarButtonItem *forwardBtn;

@end

二、创建label，手势

- (void)viewDidLoad {

[super viewDidLoad];

self.view.backgroundColor = [UIColor whiteColor];

_arr = @[@"11111", @"22222", @"33333",@"44444",@"55555"];

[self buildLable];

[self configTapGes];

_count=0;

}

#pragma mark- label

- (void)buildLable {

_labelView= [[UIViewalloc]init];

[self.view addSubview:_labelView];

[_labelView mas_makeConstraints:^(MASConstraintMaker *make) {

make.centerX.equalTo(self.view.mas_centerX);

make.centerY.equalTo(self.view.mas_centerY);

make.width.mas_offset(WIDTH-40);

make.height.mas_offset(500);

}];

_labelView.backgroundColor = [UIColor orangeColor];

_label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, WIDTH-40, 500)];

_label.backgroundColor = [UIColor grayColor];

_label.numberOfLines = 0;

_label.text = [_arr objectAtIndex:0];

[self.labelView addSubview:_label];

}

#pragma mark- 手势

- (void)configTapGes {

_fromRightSwip= [[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(nextPage:)];

_fromRightSwip.direction = UISwipeGestureRecognizerDirectionLeft;

[self.view addGestureRecognizer:_fromRightSwip];

_fromLeftSwip= [[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(forwardPage:)];

_fromLeftSwip.direction = UISwipeGestureRecognizerDirectionRight;

[self.view addGestureRecognizer:_fromLeftSwip];

}

三、手势实现方法及执行动画

#pragma mark- 下一页按钮响应事件

- (void)nextPage:(UIButton*)btn {

if(_count<_arr.count-1) {

_label.text= [_arrobjectAtIndex:_count+1];

NSString*subtypeString;

subtypeString =kCATransitionFromRight;

[self transitionWithType:@"pageCurl" WithSubtype:subtypeString ForView:_labelView];

_count=_count+1;

}else{

_count=_arr.count-1;

// [self showAlert:@"已经是最后一页"];

}

NSLog(@"下一页：%ld", (long)_count);

}

#pragma mark- 上一页按钮响应事件

- (void)forwardPage:(UIButton*)btn {

if(_count>0) {

_label.text= [_arrobjectAtIndex:_count-1];

NSString*subtypeString;

subtypeString =kCATransitionFromLeft;

[self transitionWithType:@"pageCurl" WithSubtype:subtypeString ForView:_labelView];

_count=_count-1;

}else{

_count=0;

// [self showAlert:@"已经是第一页"];

}

NSLog(@"上一页：%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*) typeWithSubtype:(NSString*) subtypeForView: (UIView*) view {

CATransition *animation = [CATransition animation];

animation.duration=0.7f;

animation.type= type;

if(subtype !=nil) {

animation.subtype= subtype;

}

animation.timingFunction = UIViewAnimationOptionCurveEaseInOut;

[view.layeraddAnimation:animationforKey:@"animation"];

}