标签: uiswipegesturerecognizer

我想在基于视图的iPhone项目中添加简单的滑动手势识别功能.应识别所有方向(右,下,左,上)的手势.

它在UISwipeGestureRecognizer的文档中说明:

您可以通过使用按位或操作数指定多个UISwipeGestureRecognizerDirection常量来指定多个方向.默认方向是UISwipeGestureRecognizerDirectionRight.

但对我来说它不起作用.当所有四个方向都被"或"时,仅识别左右滑动.

- (void)viewDidLoad {
    UISwipeGestureRecognizer *recognizer;

    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionRight | UISwipeGestureRecognizerDirectionDown | UISwipeGestureRecognizerDirectionLeft | UISwipeGestureRecognizerDirectionUp)];
    [[self view] addGestureRecognizer:recognizer];
    [recognizer release]; 
    [super viewDidLoad];
}

-(void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer {
    NSLog(@"Swipe received.");
}

我通过在视图中添加四个识别器来修复此问题,但我很想知道它为什么不像在文档中宣传的那样工作？

- (void)viewDidLoad {
    UISwipeGestureRecognizer *recognizer;

    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];
    [[self view] addGestureRecognizer:recognizer];
    [recognizer release];

    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionUp)];
    [[self view] addGestureRecognizer:recognizer];
    [recognizer release];

    recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];
    [[self view] addGestureRecognizer:recognizer]; …

我需要使用滑动来识别向下然后向右滑动手势.但是在快速的UISwipeGestureRecognizer上预先确定了正确的方向..而且我不知道如何使用其他方向.

我有一个UIViewController实现TableViews委托和数据源协议.现在我想向细胞添加"轻扫删除"手势.

我应该怎么做呢.

我给出了commitEditingStyle方法的空白实现,并将Editing属性设置为YES.

仍然没有滑动功能.

现在我需要单独添加UISwipeGesture到每个单元格吗？

或者我错过了什么？

我需要识别所有方向的滑动(向上/向下/向左/向右).不是同时,但我需要认识到它们.

我试过了:

  UISwipeGestureRecognizer *Swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(SwipeRecognizer:)];
  Swipe.direction = (UISwipeGestureRecognizerDirectionLeft | 
                     UISwipeGestureRecognizerDirectionRight |
                     UISwipeGestureRecognizerDirectionDown | 
                     UISwipeGestureRecognizerDirectionUp);
  [self.view addGestureRecognizer:Swipe];
  [Swipe release];

但没有出现 SwipeRecognizer

这是SwipeRecognizer的代码:

- (void) SwipeRecognizer:(UISwipeGestureRecognizer *)sender {
  if ( sender.direction == UISwipeGestureRecognizerDirectionLeft )
    NSLog(@" *** SWIPE LEFT ***");
  if ( sender.direction == UISwipeGestureRecognizerDirectionRight )
    NSLog(@" *** SWIPE RIGHT ***");
  if ( sender.direction == UISwipeGestureRecognizerDirectionDown )
    NSLog(@" *** SWIPE DOWN ***");
  if ( sender.direction == UISwipeGestureRecognizerDirectionUp )
    NSLog(@" *** SWIPE UP ***");
}

我怎样才能做到这一点？如何为我的滑动对象分配所有不同的方向？

我需要检测我的滑动手势的方向,我有问题.手势正在工作,但我不知道如何检测方向....

swipeGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(detectSwipe:)];
[swipeGesture setNumberOfTouchesRequired:1];
[swipeGesture setDirection:UISwipeGestureRecognizerDirectionDown | UISwipeGestureRecognizerDirectionUp];
[appView addGestureRecognizer:swipeGesture];

-(void)detectSwipe:(UISwipeGestureRecognizer *)recognizer { 
switch (recognizer.direction) {
    case UISwipeGestureRecognizerDirectionUp:
        NSLog(@"smth1");
        break;


    case UISwipeGestureRecognizerDirectionDown:
        NSLog(@"smth2");
    default:
        break;
}
}

它不起作用:/

我SwipeRefreshLayout在下面的布局中使用:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:background="@color/homePageBackground"
  android:orientation="vertical" >


<android.support.v4.widget.SwipeRefreshLayout
    android:id="@+id/swipeRefreshLayout_listView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >
<fragment
        android:id="@+id/announcementHomefragment"
        android:name="in.test.app.AnnouncementFragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
        <ScrollView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/homePageBackground" >

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginBottom="15dp"
                android:background="@color/homePageBackground" >

                <TextView
                    android:id="@+id/newsTitle"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:layout_marginLeft="15dp"
                    android:layout_marginTop="5dp"
                    android:gravity="center"
                    android:text="@string/new_list"
                    android:textAppearance="?android:attr/textAppearanceSmall"
                    android:textColor="@color/white"
                    android:textStyle="bold" />

                <fragment
                    android:id="@+id/newshomefragment"
                    android:name="in.test.app.NewsFragment"
                    android:layout_width="wrap_content"
                    android:layout_height="190dp"
                    android:layout_below="@id/newsTitle"
                    android:layout_marginTop="-15dp" />

                <TextView
                    android:id="@+id/productTitle"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_below="@id/newshomefragment"
                    android:layout_gravity="center"
                    android:layout_marginLeft="15dp"
                    android:layout_marginTop="5dp"
                    android:gravity="center"
                    android:text="@string/product_in_home"
                    android:textAppearance="?android:attr/textAppearanceSmall"
                    android:textColor="@color/white"
                    android:textStyle="bold" />

                <fragment
                    android:id="@+id/proCategoryhomefragment"
                    android:name="in.test.app.CategoryFragment"
                    android:layout_width="wrap_content"
                    android:layout_height="170dp" …

我添加了这段代码 cellForRowAtIndexPath

UISwipeGestureRecognizer *gestureR = [[UISwipeGestureRecognizer alloc]
                                             initWithTarget:self action:@selector(handleSwipeFrom:)];
        [gestureR setDirection:UISwipeGestureRecognizerDirectionRight];//|UISwipeGestureRecognizerDirectionRight)];
        [cell addGestureRecognizer:gestureR];

它工作正常.但我想要UISwipeGestureRecognizerDirectionLeft这样添加

[gestureR setDirection:UISwipeGestureRecognizerDirectionLeft|UISwipeGestureRecognizerDirectionRight)];

当我检查方向和状态时,我总是得到3 = 3

- (void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer {    

    NSLog(@"%d = %d",recognizer.direction,recognizer.state);
}

如果我只申请一个手势,它可以正常工作.我试着逐个添加两个手势.但它只会响应一个手势.

如何添加第二个手势.我直接添加到一个手势到TableView另一个到单元格,但现在使用.

我正在开发一个应用程序,我使用了Pan Gesture以及Swipe Gesture.因此,每次我执行Swipe Gesture时,Pan手势中的方法总是被调用,并且Swipe Gesture方法不会被调用.

所有的手势方法之间有没有优先权？

我已经添加了一个UISwipeGestureRecognizer到我的Xcode笔尖,并在那里使我的应用程序崩溃:

..exception'NSInvalidArgumentException',原因:' - [UISwipeGestureRecognizer initWithCoder:]:无法识别的选择器发送到实例0x5c2ab30'.

为什么？

好的,这就是我遇到的问题:

我试图从viewController我命名的MenuViewController包含我的菜单的那个(显然)切换.我有一个单独的viewController名字ViewController,包含我的mapView.我希望能够增加一倍手指swipe left从我MenuViewController到我mapView.

我不确定从哪里开始.

另外,我使用的是xib文件,而不是故事板.运行iOS 6.