Android scrollview inside another scrollview doesn't scroll

Question

I\'m trying to put a ScrollView inside another ScrollView and I tried the answers found on this site but it still doesn\'t seems to work completely. Here is the XML:

Answer 1

Here is a possible solution which works fine with ScrollView and ListView inside a ScrollView. ScrollView Inside ScrollView

Answer 2

you can not use two Scrollview inside Scrollview OS get confuse which one have to scroll so your activity hang so do not use like this

Answer 3

use this custom scrollview as inner scrollview:

public class TouchMeScrollView extends ScrollView {
public TouchMeScrollView(Context context) {
    super(context);
}

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

public TouchMeScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
}

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public TouchMeScrollView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
    super(context, attrs, defStyleAttr, defStyleRes);
}

@Override
public boolean onTouchEvent(MotionEvent ev) {
    requestDisallowInterceptTouchEvent(true);
    return super.onTouchEvent(ev);
}
}

Answer 4

check this link which shows that how to use two widget with scroll functionality in same activity. check this below code in that.

parentScroll.setOnTouchListener(new View.OnTouchListener() {

            public boolean onTouch(View v, MotionEvent event) {
                Log.v("PARENT", "PARENT TOUCH");
                findViewById(R.id.child_scroll).getParent()
                        .requestDisallowInterceptTouchEvent(false);
                return false;
            }
        });
        childScroll.setOnTouchListener(new View.OnTouchListener() {

            public boolean onTouch(View v, MotionEvent event) {
                Log.v("CHILD", "CHILD TOUCH");
                // Disallow the touch request for parent scroll on touch of
                // child view
                v.getParent().requestDisallowInterceptTouchEvent(true);
                return false;
            }
        });

Answer 5

I'm almost sure it is impossible:

How android handles touch events:

Parent gets event and decides if it has to handle it or if it should let handle it to the child;

so,if a scrollview handles the touch, the one which handles it, is always the parent one

http://developer.android.com/training/gestures/viewgroup.html

personally i don't know if is there a way to understand what is touched behind the parent scrollview to see if it is another scrollview and let it handle the movement

Answer 6

You should use NestedScrollView.

<android.support.v4.widget.NestedScrollView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            >
            <!-- -->
</android.support.v4.widget.NestedScrollView>