How to disable scrollView interaction on the user screen?

Question

On the screen, the user should not be able to touch the Scroll, His drive I’m doing all by code this way for example:

Moving:

public void move(View v){scroll.scrollTo(160, 0);}

I’m looking for a way to block off Move by screen to make only by code as shown above.

The content of ScrollView is a LinearLayout (vertical).

Answer 1

You can create a custom scrollview.

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ScrollView;

public class CustomScrollView extends ScrollView {

    // true se pode mover (nao rolavel)
    // false se não pode mover (rolavel)
    private boolean mScrollable = true;

    public CustomScrollView(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
    }

    public CustomScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
    }

    public CustomScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        // TODO Auto-generated constructor stub
    }


    public void setScrollingEnabled(boolean enabled) {
        mScrollable = enabled;
    }

    public boolean isScrollable() {
        return mScrollable;
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        switch (ev.getAction()) {
            case MotionEvent.ACTION_DOWN:

                // se podemos rolar passar o evento para a superclasse
                if (mScrollable) 
                    return super.onTouchEvent(ev);

                return mScrollable; 
            default:
                return super.onTouchEvent(ev);
        }
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        if (!mScrollable) 
            return false;
        else 
            return super.onInterceptTouchEvent(ev);
    }

}

In your xml do this way:

<com.mypackagename.CustomScrollView
    android:id="@+id/scroll" 
    android:layout_height="fill_parent" 
    android:layout_width="fill_parent">

    <ListView android:id="@+id/listview" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent">
    </ListView >

</com.mypackagename.CustomScrollView>

So then you set up your method setScrollingEnabled() setting a value false, as in the example below:

CustomScrollView customScrollView;
customScrollView = (CustomScrollView) findViewById(R.id.scroll);
customScrollView.setScrollingEnabled(false);

Good Luck!