滑動html頁面如果我水平滑動，加載另一個html頁面

Question

如何才能夠滑動（左）html頁面？

Answer 1

處理在Web視圖上發生的手勢是非常棘手的，因爲UIWebView真的很貪婪並且想要處理它們。

像往常一樣使用網絡瀏覽器，你可以嘗試使用Javascript來做所有事情。您可以在S.O. post中閱讀關於它的內容。

我更喜歡處理捏（變焦），雖然刷上的Web視圖的方式是以下幾點：

1. 子UIWindow：

   @interface MyWebNavigatorWindow : UIWindow { 
   

2. 安裝窗型的實例適用於您的應用的窗口application:didFinishLaunchingWithOptions：

   _window = [[MyWebNavigatorWindow alloc] initWithFrame:rect]; 
   

   或者，您可以在Interface Builder中爲窗口對象分配一個類。

3. 手柄滑動和捏在sendEvent在MyWebNavigatorWindow類：

   - (void)sendEvent:(UIEvent*)event { 
       NSSet* allTouches = [event allTouches]; 
       UITouch* touch = [allTouches anyObject]; 
       UIView* touchView = [touch view]; 
   

4. 您將需要一個機制sendEvent當觸摸你的網頁視圖內發生的檢測。就我而言，我「註冊」的一切，我想處理觸摸的再檢查的意見，如果觸摸裏面他們：

    for (UIView* view in self.controlledViews) { // self.controlledViews is the array of all "registered" views 
        if ([touchView isDescendantOfView:view]) { 
   

5. 然後我處理各種觸摸階段檢測到什麼樣的姿勢呢是（代碼片段不可編譯，但它提供了這個想法）：

    if (touch.phase == UITouchPhaseBegan) { 
        NSLog(@"TOUCH BEGAN"); 
        _initialView = touchView; 
        startTouchPosition1 = [touch locationInView:self]; 
        startTouchTime = touch.timestamp; 
   
        if ([allTouches count] > 1) { 
         startTouchPosition2 = [[[allTouches allObjects] objectAtIndex:1] locationInView:self]; 
         previousTouchPosition1 = startTouchPosition1; 
         previousTouchPosition2 = startTouchPosition2; 
        } 
       } 
   
       if (touch.phase == UITouchPhaseMoved) { 
        NSLog(@"TOUCH MOVED"); 
        if ([allTouches count] > 1) { 
         CGPoint currentTouchPosition1 = [[[allTouches allObjects] objectAtIndex:0] locationInView:self]; 
         CGPoint currentTouchPosition2 = [[[allTouches allObjects] objectAtIndex:1] locationInView:self]; 
   
         CGFloat currentFingerDistance = CGPointDist(currentTouchPosition1, currentTouchPosition2); 
         CGFloat previousFingerDistance = CGPointDist(previousTouchPosition1, previousTouchPosition2); 
         if (fabs(currentFingerDistance - previousFingerDistance) > ZOOM_DRAG_MIN) { 
          NSNumber* movedDistance = [NSNumber numberWithFloat:currentFingerDistance - previousFingerDistance]; 
          if (currentFingerDistance > previousFingerDistance) { 
           NSLog(@"zoom in"); 
           [[NSNotificationCenter defaultCenter] postNotificationName:NOTIFICATION_ZOOM_IN object:movedDistance]; 
          } else { 
           NSLog(@"zoom out"); 
           [[NSNotificationCenter defaultCenter] postNotificationName:NOTIFICATION_ZOOM_OUT object:movedDistance]; 
          } 
         } 
        } 
       } 
   
       if (touch.phase == UITouchPhaseEnded) { 
        CGPoint currentTouchPosition = [touch locationInView:self]; 
   
        // Check if it's a swipe 
        if (fabsf(startTouchPosition1.x - currentTouchPosition.x) >= SWIPE_DRAG_HORIZ_MIN && 
         fabsf(startTouchPosition1.x - currentTouchPosition.x) > fabsf(startTouchPosition1.y - currentTouchPosition.y) && 
         touch.timestamp - startTouchTime < 0.7 
         ) { 
         // It appears to be a swipe. 
         if (startTouchPosition1.x < currentTouchPosition.x) { 
          NSLog(@"swipe right"); 
          [[NSNotificationCenter defaultCenter] postNotificationName:NOTIFICATION_SWIPE_RIGHT object:touch]; 
         } else { 
          NSLog(@"swipe left"); 
          [[NSNotificationCenter defaultCenter] postNotificationName:NOTIFICATION_SWIPE_LEFT object:touch]; 
         } 
        } 
        startTouchPosition1 = CGPointMake(-1, -1); 
        _initialView = nil; 
       }