How to scroll to top of long ScrollView layout

Question

For part of my app  the user is presented with a list of names and is asked to group them as they see fit     Note  the ListView code was copied verbatim from the Android Views tutorial   I haven t yet customized it to my needs  I m just trying to figure out how to make this work    The basic layout is a LinearLayout  containing a ScrollView  called  groupsScrollView  in the code below   containing a RelativeLayout   I have some buttons and text  and then my ListView beneath that  which displays the list of names   All this is taller than the visible screen area  so the user is allowed to scroll vertically to see it all   This all works beautifully  except when the page loads it is always pre-scrolled to the top of my ListView - in the middle of the page   The text and buttons I ve created that tell the user what to do are not visible     I can grab the screen and scroll up  that works just fine  but I d like the screen to load having already been scrolled to the top   The user shouldn t have to scroll UP to see the top of a freshly loaded page   But everything I ve tried to programmatically scroll to the top of the screen has failed   Here s my onCreate method   protected void onCreate Bundle savedInstanceState         super onCreate savedInstanceState        setContentView R layout groups        mainScrollView    ScrollView findViewById R id groupsScrollView          get the Bundle out of the Intent        Bundle extras   getIntent   getExtras        mNames   extras getStringArray  mNames         setListAdapter new ArrayAdapter lt String gt  this  R layout list item  mNames         ListView lv   getListView        lv setTextFilterEnabled true          This is the line I m having issues with     mainScrollView pageScroll View FOCUS UP        lv setOnItemClickListener new OnItemClickListener             public void onItemClick AdapterView lt   gt  parent  View view              int position  long id                 When clicked  show a toast with the TextView text           Toast makeText getApplicationContext      TextView  view  getText                  Toast LENGTH SHORT  show                            The line  mainScrollView pageScroll View FOCUS UP   is the problem   It doesn t cause an error  but it doesn t seem to do anything   I ve tried scrollTo 0 0   scrollDirection View FOCUS UP   and everything else I can think of     Since I don t get an error I have to assume that these scroll commands are actually working  but that they re scrolling to the top of the ListView  rather than the top of the ScrollView or RelativeLayout that contains it   This seems to be confirmed by Google s own description of the scrollTo int x  int y  method where they say  This version also clamps the scrolling to the bounds of our child       So to make a long question even longer  how do I load a bunch of views on the screen contained within a ScrollView  and then programmatically scroll the whole thing to the top of the page so the user can interact with it   Thanks

User · Answer

This is force scroll for scrollview                scrollView post new Runnable                      Override                 public void run                         scrollView scrollTo 0  0                       scrollView pageScroll View FOCUS UP                       scrollView smoothScrollTo 0 0

User · Answer

SuppressWarnings    deprecation    unchecked     public void swipeTopToBottom AppiumDriver lt MobileElement gt  driver                       throws InterruptedException          Dimension dimensions   driver manage   window   getSize            Double screenHeightStart   dimensions getHeight     0 30          int scrollStart   screenHeightStart intValue            System out println  s   scrollStart           Double screenHeightEnd   dimensions getHeight   0 90          int scrollEnd   screenHeightEnd intValue            driver swipe 0 scrollStart 0 scrollEnd 2000           CommonUtils threadWait driver  3000

User · Answer

Had the same issue  probably some kind of bug    Even the fullScroll ScrollView FOCUS UP  from the other answer didn t work  Only thing that worked for me was calling scroll view smoothScrollTo 0 0  right after the dialog is shown

User · Answer

scrollView getViewTreeObserver   addOnGlobalLayoutListener new ViewTreeObserver OnGlobalLayoutListener          Override     public void onGlobalLayout                Ready  move up         scrollView fullScroll View FOCUS UP

User · Answer

I faced Same Problem When i am using Scrollview inside View Flipper or Dialog that case  scrollViewObject fullScroll ScrollView FOCUS UP  returns false so that case  scrollViewObject smoothScrollTo 0  0  is Worked for me  Scroll Focus Top

User · Answer

Try   mainScrollView fullScroll ScrollView FOCUS UP     it should work

User · Answer

Very easy      ScrollView scroll    ScrollView  findViewById R id addresses scroll       scroll setFocusableInTouchMode true       scroll setDescendantFocusability ViewGroup FOCUS BEFORE DESCENDANTS

User · Answer

i had the same problem and this fixed it  Hope it helps you   listView setFocusable false

User · Answer

I fixed my issue in Kotlin like this  scrollview isFocusableInTouchMode   true scrollview fullScroll View FOCUS UP  scrollview smoothScrollTo 0 0   You can also create an extension of this like  ScrollView moveToTop         this isFocusableInTouchMode   true     this fullScroll View FOCUS UP      this smoothScrollTo 0 0     and use it like  scrollView moveToTop

User · Answer

This is worked for me  scroll view smoothScrollTo 0 0      scroll to top of screen

User · Answer

This solution also works for NestedScrollView NestedScrollView nestedScrollView   view findViewById R id YourNestedScrollViewID   nestedScrollView fullScroll ScrollView FOCUS UP

User · Answer

The main problem to all these valid solutions is that you are trying to move up the scroll when it isn t drawn on screen yet   You need to wait until scroll view is on screen  then move it to up with any of these solutions  This is better solution than a postdelay  because you don t mind about the delay          Wait until my scrollView is ready     scrollView getViewTreeObserver   addOnGlobalLayoutListener new ViewTreeObserver OnGlobalLayoutListener              Override         public void onGlobalLayout                    Ready  move up             scrollView fullScroll View FOCUS UP

User · Answer

scrollViewObject fullScroll ScrollView FOCUS UP  this works fine  but only the problem with this line is that  when data is populating in scrollViewObject  has been called immediately  You have to wait for some milliseconds until data is populated  Try this code   scrollViewObject postDelayed new Runnable          Override     public void run             scroll fullScroll ScrollView FOCUS UP            600     OR   scrollViewObject getViewTreeObserver   addOnGlobalLayoutListener new ViewTreeObserver OnGlobalLayoutListener          Override     public void onGlobalLayout             scrollViewObject getViewTreeObserver   removeOnGlobalLayoutListener this           scrollViewObject fullScroll View FOCUS UP

User · Answer

final ScrollView scrollview    ScrollView findViewById R id selected place layout scrollview             scrollview post new Runnable                      public void run                          scrollview scrollTo 0  0

User · Answer

runOnUiThread  new Runnable        Override    public void run          mainScrollView fullScroll ScrollView FOCUS UP

[android] How to scroll to top of long ScrollView layout?

Examples related to android

Examples related to listview

Examples related to scrollview