ScrollView inside ViewPager, scrolls to middle automatically

Question

I have a ViewPager that contains several instances of the same fragment, this fragment contains an article. The Article view hierarchy is quite simple, a Title, a Banner image,

Answer 1

ScrollView inside ViewPager scrolls automatically but does not scrolls in middle.. Check out this.

pager.setOnPageChangeListener(new OnPageChangeListener() {

                @Override
                public void onPageSelected(int position) {
                    // TODO Auto-generated method stub
                    int x=iv.getLeft();
                    int y=iv.getTop();
                    scroll.scrollTo(x, y);
                }

pager is ViewPager's object and scroll is ScrollView and iv is any View say TextView or ImageView.

When we change page in viewpager, scrollbar automatically scrolls but to the left. If you would have find solution to middle please let me know.. :)

Answer 2

Add this attribute value android:descendantFocusability="blocksDescendants" to the child of ScrollView, according to this question: How to prevent a scrollview from scrolling to a webview after data is loaded?

Answer 3

This is likely caused by android:textIsSelectable. You may try adding the following to the ScrollView:

android:focusable="true"
android:focusableInTouchMode="true"
android:descendantFocusability="beforeDescendants"

Answer 4

I tried solution:

android:focusable=true

android:focusableInTouchMode=true

android:descendantFocusability=beforeDescendants

And i dont know why but I cant do this with my RelativeLayout which is parent view (this does not work).

I had to wrap my TextView inside FrameLayout and now everything is ok. Maybe this helps somebody.

  <FrameLayout
        android:id="@+id/detail_description_container"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/detail_parameters_container"
        android:layout_centerInParent="true"
        android:descendantFocusability="beforeDescendants"
        android:focusable="true"
        android:focusableInTouchMode="true" >

        <TextView
            android:id="@+id/detail_descritpion"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:autoLink="all"
            android:padding="10dp"
            android:textIsSelectable="true" />
    </FrameLayout>

Answer 5

I also had this problem. I solved it with setting android:focusable="true" and android:focusableInTouchMode="true" to the first element in the ScrollView's LinearLayout.

Answer 6

i try to add

    android:focusable="true"
    android:focusableInTouchMode="true"
    android:descendantFocusability="beforeDescendants"

in the root viewGroup . it's work's well. like below.

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:focusable="true"
    android:focusableInTouchMode="true"
    android:descendantFocusability="beforeDescendants"
    android:background="@color/normal_bg">

    <ScrollView
        android:id="@+id/scroll"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/rl_enter"
        android:scrollbars="none">
        </ScrollView>
    </RelativeLayout>