Android, make scrollable view overflow to the left instead of right?

Question

I was recommended using a parent view to get horizontal scrolling right in my TextView:

Answer 1

Inspired by this

You can make your own class derived from HorizontalScrollView

public class RightAlignedHorizontalScrollView extends HorizontalScrollView {
    public RightAlignedHorizontalScrollView(Context context) {
        super(context);
    }

    public RightAlignedHorizontalScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public RightAlignedHorizontalScrollView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);
        scrollTo(getChildAt(0).getMeasuredWidth(), 0);
    }
}

I posted a complete simple project there

Answer 2

I'm quite late at this, but here's a simple and easy approach by using rotation of the views.

horizontal_layout_id.setRotationY(180f)

The above code inverts the whole horizontal layout horizontally, this make the text start on the right instead of left. HOWEVER, this also inverts the text in the textview inside, which is obviously not good.

textview_inside_horizontal_layout_id.setRotationY(180f)

So, we invert the textview itself once more, this will mirror the mirrored text again! So, you'll end up having something like this-

This will make the text overflow to the right instead of left as well!

Answer 3

Did you try assigning the ellipsize parameter to your textview?

android:singleLine="true"
android:ellipsize="start"

I hope this will solve your issue.

For setting the gravity of the text when not overflowing, try setting

android:gravity="center_vertical|right"

Answer 4

<HorizontalScrollView 
    android:id="@+id/hsv1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <TextView android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:scrollHorizontally="true"
        android:gravity="center|right"
        android:text="123456789"/>

</HorizontalScrollView>    

Added id to the HorizontalScrollView

HorizontalScrollView hsv = (HorizontalScrollView) findViewById(R.id.hsv1);
hsv.scrollTo(hsv.getRight(), hsv.getTop());

This is untested as I made it on the fly. Tell me how it goes.

Answer 5

I think you must use android:fillViewport="true" property for scroll-view
Check This & This

Go through a Tutorial

   <ScrollView 
        android:fillViewport="true"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:id="@+id/scrollView"/>

Doubt: Where is your container layout for scroll-view??

Answer 6

try this , this would work properly and will not give you any delays when you jump between threads

hor = (HorizontalScrollView) findViewById(R.id.horizontalScrollView1);
    hor.postDelayed(new Runnable() {
        public void run() {
            hor.fullScroll(HorizontalScrollView.FOCUS_RIGHT);
        }
    }, 1L);