iOS开发，如何实现单击label可以让其移动到随机位置，双击label可以移动到想要的位置

在label添加UITapGestureRecognizer 手势

UITapGestureRecognizer *singleFingerOne = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleFingerEvent:)]singleFingerOne.numberOfTouchesRequired = 1//手指数 singleFingerOne.numberOfTapsRequired = 1//tap次数

singleFingerOne.delegate = self

[label addGestureRecognizer:singleFingerOne]

UITapGestureRecognizer *singleFingerTwo = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleFingerEvent:)]singleFingerTwo.numberOfTouchesRequired = 1

singleFingerTwo.numberOfTapsRequired = 2

singleFingerTwo.delegate = self

[label addGestureRecognizer:singleFingerTwo]

[singleFingerOne requireGestureRecognizerToFail:singleFingerTwo]//加这句话是为了出发双击事件时不响应单击事件。

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

- ( 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: self action: @selector (nextPage:)]

    _fromRightSwip.direction = UISwipeGestureRecognizerDirectionLeft

    [ self .view addGestureRecognizer:_fromRightSwip]

    _fromLeftSwip= [[UISwipeGestureRecognizeralloc]initWithTarget: self action: @selector (forwardPage:)]

    _fromLeftSwip.direction = UISwipeGestureRecognizerDirectionRight

    [ self .view addGestureRecognizer:_fromLeftSwip]

}

#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"]

}

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