Scroll even if the seekbar is touched

问题

I am using a seekbar in a linearlayout in a ScroolView in a NavigationDrawer

NavigationDrawer > ScrollView > LinearLayout > SeekBar + other stuff

When I touch the seekbar I am unable to scroll up and down and I'd like to.

Here my function which allow me to slide the seekbar instead of slide the navigation drawer

private View onCritereView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View mView = inflater.inflate(R.layout.fragment_critere, container, false);
    LinearLayout mLinearLayout = (LinearLayout) mView.findViewById(R.id.critere_linearlayout);

    int i;
    for (i = 0; i < mTitles.length; i++) {
        View mViewElement = inflater.inflate(R.layout.item_critere, null);
        ((TextView) mViewElement.findViewById(R.id.critere_title)).setText(mTitles[i]);
        SeekBar mSeekBar = (SeekBar) mViewElement.findViewById(R.id.critere_qualifier);
        mSeekBar.setOnTouchListener(new ListView.OnTouchListener()
        {
            @Override
            public boolean onTouch(View v, MotionEvent event)
            {
                int action = event.getAction();
                switch (action)
                {
                    case MotionEvent.ACTION_DOWN:
                        // Disallow Drawer to intercept touch events.
                        v.getParent().requestDisallowInterceptTouchEvent(true);
                        break;

                    case MotionEvent.ACTION_UP:
                        // Allow Drawer to intercept touch events.
                        v.getParent().requestDisallowInterceptTouchEvent(false);
                        break;
                }

                // Handle seekbar touch events.
                v.onTouchEvent(event);
                return true;
            }
        });
        mLinearLayout.addView(mViewElement);
    }
    return mView;
}

Now what I need is:

If you touch the seekbar and if you slide hozizontaly use seekbar.

else if you touch the seekbar and if you slide verticaly use scrollview

How can I do that ?

Thanks in advance :)

回答1:

Here is a working VerticalSeekBar implementation:

package android.widget;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.MotionEvent;

public class VerticalSeekBar extends SeekBar {

    public VerticalSeekBar(Context context) {
        super(context);
    }

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

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

    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(h, w, oldh, oldw);
    }

    @Override
    protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(heightMeasureSpec, widthMeasureSpec);
        setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
    }

    protected void onDraw(Canvas c) {
        c.rotate(-90);
        c.translate(-getHeight(), 0);

        super.onDraw(c);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (!isEnabled()) {
            return false;
        }

        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
            case MotionEvent.ACTION_MOVE:
            case MotionEvent.ACTION_UP:
                setProgress(getMax() - (int) (getMax() * event.getY() / getHeight()));
                onSizeChanged(getWidth(), getHeight(), 0, 0);
                break;

            case MotionEvent.ACTION_CANCEL:
                break;
        }
        return true;
    }
}

To implement it, create a new class in your project, choosing the right package:

There, paste the code and save it. Now use it in your XML layout:

<android.widget.VerticalSeekBar
  android:id="@+id/seekBar1"
  android:layout_width="wrap_content"
  android:layout_height="200dp"
  />

来源：https://stackoverflow.com/questions/18403127/scroll-even-if-the-seekbar-is-touched