Disable scrolling in webview

Question

Until now I have been an iPhone developer only and now I have decided to give Android a whirl  Something I haven t been able to figure out on Android is how to programmatically prevent scrolling in a WebView   Something similar to iPhones prevention of the onTouchMove event would be great

User · Answer

I don t know if you still need it or not  but here is the solution   appView    WebView  findViewById R id appView    appView setVerticalScrollBarEnabled false   appView setHorizontalScrollBarEnabled false

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This may not be the source of your problem but I have spent hours trying to track down why my application that worked fine on the iphone cause the android browser to constantly throw up the vertical horizontal scrollbars and actually move the page  I had an html body tag with height and width set to 100   and the body was full of various  tags in different locations  No matter what I tried  the android browsers would show their scroll bars and move the page just a little bit  particularly when doing a fast swipe  The solution that worked for me without having to do anything in an APK was to add the following to the body tag    leftmargin  0  topmargin  0    It seems the default margins for body tag were being applied on the droid but ignored on the iphone

User · Answer

Making the WebView ignore motion events is the wrong way to go about it  What if the WebView needs to hear about these events   Instead subclass WebView and override the non-private scroll methods   public class NoScrollWebView extends WebView                Override     public boolean overScrollBy int deltaX  int deltaY  int scrollX  int scrollY                                   int scrollRangeX  int scrollRangeY  int maxOverScrollX                                   int maxOverScrollY  boolean isTouchEvent            return false              Override     public void scrollTo int x  int y               Do nothing             Override     public void computeScroll                Do nothing           If you look at the source for WebView you can see that onTouchEvent calls doDrag which calls overScrollBy

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Adding the margin details to the body will prevent scrolling if your content properly wraps  as so    lt body leftmargin  0  topmargin  0  rightmargin  0  bottommargin  0  gt    Easy enough  and a lot less code   bug overhead

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Just use android focusableInTouchMode  false  on your webView

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Here is my code for disabling all scrolling in webview        disable scroll on touch   webview setOnTouchListener new View OnTouchListener          Override     public boolean onTouch View v  MotionEvent event          return  event getAction      MotionEvent ACTION MOVE                   To only hide the scrollbars  but not disable scrolling   WebView setVerticalScrollBarEnabled false   WebView setHorizontalScrollBarEnabled false       or you can try using single column layout but this only works with simple pages and it disables horizontal scrolling        Only disabled the horizontal scrolling     webview getSettings   setLayoutAlgorithm LayoutAlgorithm SINGLE COLUMN       You can also try to wrap your webview with vertically scrolling scrollview and disable all scrolling on the webview    lt ScrollView android layout width  fill parent  android layout height  fill parent  android scrollbars  vertical      gt     lt WebView     android id    id mywebview      android layout width  fill parent      android layout height  fill parent      android scrollbars  none    gt   lt  ScrollView gt    And set  webview setScrollContainer false     Don t forget to add the webview setOnTouchListener      code above to disable all scrolling in the webview  The vertical ScrollView will allow for scrolling of the WebView s content

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studying the above answers almost worked for me     but I still had a problem that I could  fling  the view on 2 1  seemed to be fixed with 2 2  amp  2 3    here is my final solution  public class MyWebView extends WebView   private boolean bAllowScroll   true   SuppressWarnings  unused      it is used  just java is dumb private long downtime   public MyWebView Context context  AttributeSet attrs        super context  attrs      public void setAllowScroll int allowScroll        bAllowScroll   allowScroll  0      if   bAllowScroll          super scrollTo 0 0       setHorizontalScrollBarEnabled bAllowScroll       setVerticalScrollBarEnabled bAllowScroll       Override public boolean onTouchEvent MotionEvent ev         switch  ev getAction              case MotionEvent ACTION DOWN          if   bAllowScroll              downtime   ev getEventTime            break      case MotionEvent ACTION CANCEL      case MotionEvent ACTION UP          if   bAllowScroll                        try                   Field fmNumSamples   ev getClass   getDeclaredField  mNumSamples                    fmNumSamples setAccessible true                   Field fmTimeSamples   ev getClass   getDeclaredField  mTimeSamples                    fmTimeSamples setAccessible true                   long newTimeSamples     new long fmNumSamples getInt ev                    newTimeSamples 0    ev getEventTime   250                  fmTimeSamples set ev newTimeSamples                 catch  Exception e                    e printStackTrace                                    break            return super onTouchEvent ev       Override public void flingScroll int vx  int vy        if  bAllowScroll          super flingScroll vx vy       Override protected void onScrollChanged int l  int t  int oldl  int oldt        if  bAllowScroll          super onScrollChanged l  t  oldl  oldt       else if  l  0    t  0          super scrollTo 0 0       Override public void scrollTo int x  int y        if  bAllowScroll          super scrollTo x y       Override public void scrollBy int x  int y        if  bAllowScroll          super scrollBy x y

User · Answer

This should be the complete answer  As suggested by  GDanger   Extend WebView to override the scroll methods and embed the custom webview within layout xml   public class ScrollDisabledWebView extends WebView        private boolean scrollEnabled   false       public ScrollDisabledWebView Context context            super context           initView context              public ScrollDisabledWebView Context context  AttributeSet attributeSet            super context  attributeSet           initView context                this is important  Otherwise it throws Binary Inflate Exception      private void initView Context context            LayoutInflater inflater    LayoutInflater  context                  getSystemService Context LAYOUT INFLATER SERVICE                Override     protected boolean overScrollBy int deltaX  int deltaY  int scrollX  int scrollY                                     int scrollRangeX  int scrollRangeY  int maxOverScrollX                                     int maxOverScrollY  boolean isTouchEvent            if  scrollEnabled                return super overScrollBy deltaX  deltaY  scrollX  scrollY                      scrollRangeX  scrollRangeY  maxOverScrollX  maxOverScrollY  isTouchEvent                     return false              Override     public void scrollTo int x  int y            if  scrollEnabled                super scrollTo x  y                         Override     public void computeScroll             if  scrollEnabled                super computeScroll                        And then embed in layout file as follows   lt com sample apps ScrollDisabledWebView     android id    id webView      android layout width  match parent      android layout height  match parent      android layout centerInParent  true      tools context  com sample apps HomeActivity   gt    Then in the Activity  use some additional methods for disabling scrollbars too   ScrollDisabledWebView webView    ScrollDisabledWebView  findViewById R id webView   webView setVerticalScrollBarEnabled false   webView setHorizontalScrollBarEnabled false

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If you subclass Webview  you can simply override onTouchEvent to filter out the move-events that trigger scrolling   public class SubWebView extends WebView         Override     public boolean onTouchEvent  MotionEvent ev               if ev getAction      MotionEvent ACTION MOVE                postInvalidate                return true                    return super onTouchEvent ev

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I haven t tried this as I have yet to encounter this problem  but perhaps you could overrive the onScroll function    Override public void scrollTo int x  int y   super scrollTo 0 y

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To Disable scroll use this  webView setOnTouchListener new View OnTouchListener         public boolean onTouch View v  MotionEvent event                 return  event getAction      MotionEvent ACTION MOVE

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My dirty  but easy-to-implement and well working solution   Simply put the webview inside a scrollview  Make the webview to be far too bigger than the possible content  in one or both dimensions  depending on the requirements     and set up the scrollview s scrollbar s  as you wish   Example to disable the horizontal scrollbar on a webview    lt ScrollView     android layout width  fill parent      android layout height  fill parent      android scrollbars  vertical   gt       lt WebView         android id    id mywebview          android layout width  1000dip          android layout height  fill parent        gt   lt  ScrollView gt    I hope this helps

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I resolved the flicker and auto-scroll by   webView setFocusable false   webView setFocusableInTouchMode false     However if it still does not work for some reason  simply make a class that extends WebView  and put this method on it      disable scroll on touch   setOnTouchListener new View OnTouchListener          Override     public boolean onTouch View v  MotionEvent event          return  event getAction      MotionEvent ACTION MOVE                 I am suggesting to extend WebView  in order to provide more effective control  like disable enable swipes  enable disable touches  listeners  control transitions  animations  define settings internally so on

User · Answer

Set a listener on your WebView   webView setOnTouchListener new View OnTouchListener                 public boolean onTouch View v  MotionEvent event                    return event getAction      MotionEvent ACTION MOVE

[android] Disable scrolling in webview?

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