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POHow to scroll to center of child of HorizontalScrollView?
 

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  1. POHow to scroll to center of child of HorizontalScrollView?
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    <p>I need to scroll to the center of childView(TextView) of the HorizontalScrollView. i have get the center child by using below code,now i want to adjust arrow to the exact center of that child view.</p> <p>here, what i've done is i took a HorizontalScrollView and inside it a LineaerLayout and inside the LinearLayout i have TextViews.</p> <p>here's my XML: </p> <pre><code> &lt;com.sample.test.ScrollViewCustom android:id="@+id/mHorizontalScrollViewMain" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignBottom="@id/relativeOne" android:background="@drawable/mergethree2" android:scrollbars="none" &gt; &lt;LinearLayout android:id="@+id/llayoutfirst" android:layout_width="wrap_content" android:layout_height="55dip" android:orientation="horizontal" &gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="12dip" android:background="@drawable/blackline" /&gt; &lt;TextView android:id="@+id/mtxtHome" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="5dip" android:layout_marginLeft="5dip" android:layout_marginRight="5dip" android:layout_marginTop="8dip" android:text="home" android:textColor="@android:color/white" android:textSize="15sp" android:typeface="serif" /&gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="12dip" android:background="@drawable/blackline" /&gt; &lt;TextView android:id="@+id/mtxtSchools" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="5dip" android:layout_marginLeft="5dip" android:layout_marginRight="5dip" android:layout_marginTop="8dip" android:text="schools" android:textColor="@android:color/white" android:textSize="15sp" android:typeface="serif" /&gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="12dip" android:background="@drawable/blackline" /&gt; &lt;TextView android:id="@+id/mtxtCalendar" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="5dip" android:layout_marginLeft="5dip" android:layout_marginRight="5dip" android:layout_marginTop="8dip" android:text="calendar" android:textColor="@android:color/white" android:textSize="15sp" android:typeface="serif" /&gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="12dip" android:background="@drawable/blackline" /&gt; &lt;TextView android:id="@+id/mtxtActivitiesAndClubs" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="5dip" android:layout_marginLeft="5dip" android:layout_marginRight="5dip" android:layout_marginTop="8dip" android:text="activitiesandclubs" android:textColor="@android:color/white" android:textSize="15sp" android:typeface="serif" /&gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="12dip" android:background="@drawable/blackline" /&gt; &lt;TextView android:id="@+id/mtxtBoosters" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="5dip" android:layout_marginLeft="5dip" android:layout_marginRight="5dip" android:layout_marginTop="8dip" android:text="boosters" android:textColor="@android:color/white" android:textSize="15sp" android:typeface="serif" /&gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="12dip" android:background="@drawable/blackline" /&gt; &lt;TextView android:id="@+id/mtxtSchoolMenu" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="5dip" android:layout_marginLeft="5dip" android:layout_marginRight="5dip" android:layout_marginTop="8dip" android:text="schoolmenu" android:textColor="@android:color/white" android:textSize="15sp" android:typeface="serif" /&gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="12dip" android:background="@drawable/blackline" /&gt; &lt;TextView android:id="@+id/mtxtStaff" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="5dip" android:layout_marginLeft="5dip" android:layout_marginRight="5dip" android:layout_marginTop="8dip" android:text="staff" android:textColor="@android:color/white" android:textSize="15sp" android:typeface="serif" /&gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="12dip" android:background="@drawable/blackline" /&gt; &lt;TextView android:id="@+id/mtxtMyFavorites" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="5dip" android:layout_marginLeft="5dip" android:layout_marginRight="5dip" android:layout_marginTop="8dip" android:text="myfavorites" android:textColor="@android:color/white" android:textSize="15sp" android:typeface="serif" /&gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="12dip" android:background="@drawable/blackline" /&gt; &lt;TextView android:id="@+id/mtxtAboutContact" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="5dip" android:layout_marginLeft="5dip" android:layout_marginRight="5dip" android:layout_marginTop="8dip" android:text="aboutcontact" android:textColor="@android:color/white" android:textSize="15sp" android:typeface="serif" /&gt; &lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="12dip" android:background="@drawable/blackline" /&gt; &lt;/LinearLayout&gt; &lt;/com.sample.test.ScrollViewCustom&gt; </code></pre> <p>What i want is, i want the arrow exact at center of TextView which comes at Center of screen. Like Below.</p> <p><img src="https://i.stack.imgur.com/egAgT.png" alt="enter image description here"></p> <p>What i get right now is..</p> <p><img src="https://i.stack.imgur.com/hvjY5.png" alt="enter image description here"></p> <p>i have get center of child using following code but now my requirement is to scroll to that child's center of screen. </p> <p>Here's my Code:</p> <pre><code> scroll.setOnScrollStopListner(new onScrollStopListner() { @Override public void onScrollStoped() { int scrollX = scroll.getScrollX(); int width = lLayOne.getChildAt(1).getWidth(); int home = width; int school = width * 2; int calender = width * 3; int activityNclubs = width * 4; int booster = width * 5; int schoolMenu = width * 6; int staff = width * 7; int myFav = width * 8; int about = width * 9; if ( scrollX &gt; 0 &amp;&amp; scrollX &lt; home ) { Log.d(TAG, "Home "+" scrollx "+scrollX+" home "+home); }else if ( scrollX &gt; home &amp;&amp; scrollX &lt; school ) { Log.d(TAG, "school"+" scrollx "+scrollX+" school "+school); }else if ( scrollX &gt; school &amp;&amp; scrollX &lt; calender ) { Log.d(TAG, "calender"+" scrollx "+scrollX+" calender "+calender); }else if ( scrollX &gt; calender &amp;&amp; scrollX &lt; activityNclubs ) { Log.d(TAG, "activity n clubs"+" scrollx "+scrollX+" activity "+activityNclubs); }else if ( scrollX &gt; activityNclubs &amp;&amp; scrollX &lt; booster ) { Log.d(TAG, "booster"+" scrollx "+scrollX+" booster "+booster); }else if ( scrollX &gt; booster &amp;&amp; scrollX &lt; schoolMenu ) { Log.d(TAG, "school menu"+" scrollx "+scrollX+" school menu "+schoolMenu); }else if ( scrollX &gt; schoolMenu &amp;&amp; scrollX &lt; staff ) { Log.d(TAG, "staff"+" scrollx "+scrollX+" staff "+staff); }else if ( scrollX &gt; staff &amp;&amp; scrollX &lt; myFav ) { Log.d(TAG, "myFav"+" scrollx "+scrollX+" fav "+myFav); }else if ( scrollX &gt; myFav &amp;&amp; scrollX &lt; about ) { Log.d(TAG, "about"+" scrollx "+scrollX+" about "+about); } // TODO Auto-generated method stub } }); </code></pre>
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