WheelView does not scroll if it is inside a ScrollView about android-wheel HOT 22 CLOSED

I encountered the same issue now. THere are so many screen sizes to consider 
for android. k!

I also have the same problem on 2.1.

I have the same problem however I have noticed you can get it to scroll a small 
amount if carefully clicking in the values. It looks like the focus is getting 
lost.

It also happens when the wheel is inside a group of linearlayouts.
Motorola Milestone running Cyanogenmod 6 (Froyo)
Unfortunately makes the view unusable. Waiting for a fix

Thanks for this great widget

gsimoes,

Could you please provide example with a group of linear layouts?

Thanks

I've fix this issue (I hope).
Please look at 
http://android-devblog.blogspot.com/2011/01/scrolling-inside-scrollview.html
I'm not able to commit the fix now because of working on another issue, will do 
that later. So, please update your sources manually as described in link above 
and let me know whether it works.

Thanks,
Yuriy

Unfortunately it didn´t solve my problem.

Layout:


<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_height="wrap_content" android:layout_width="fill_parent">
<TextView android:layout_height="wrap_content" android:textColor="#FFFFFF" 
android:layout_centerHorizontal="true" android:layout_marginTop="5dip" 
android:id="@+id/tvTitle" android:textSize="16sp" android:text="Start Marker" 
android:layout_width="fill_parent" 
android:gravity="center_horizontal"></TextView>

<LinearLayout android:layout_height="wrap_content" 
android:layout_centerHorizontal="true" android:layout_width="wrap_content" 
android:layout_below="@+id/tvTitle" android:layout_marginTop="10dip" 
android:id="@+id/llWheels">
    <LinearLayout android:layout_toLeftOf="@+id/wvHH" android:layout_height="wrap_content" android:layout_width="wrap_content" android:id="@+id/llHH" android:orientation="vertical">
        <kankan.wheel.widget.WheelView android:id="@+id/wvHH" android:layout_height="wrap_content" android:layout_width="100dip" android:layout_weight="1"/>
        <TextView android:layout_height="wrap_content" android:textColor="#FFFFFF" android:textSize="12sp" android:layout_marginTop="3dip" android:text="Hour" android:layout_width="fill_parent" android:gravity="center_horizontal" android:id="@+id/tvHH"></TextView>
    </LinearLayout>
    <LinearLayout android:layout_toLeftOf="@+id/wvMM" android:layout_height="wrap_content" android:layout_width="wrap_content" android:orientation="vertical" android:id="@+id/llMM" android:layout_marginLeft="10dip">
        <kankan.wheel.widget.WheelView android:id="@+id/wvMM" android:layout_height="wrap_content" android:layout_width="50dip"/>
        <TextView android:layout_height="wrap_content" android:textColor="#FFFFFF" android:textSize="12sp" android:layout_marginTop="3dip" android:layout_width="fill_parent" android:gravity="center_horizontal" android:id="@+id/tvMM" android:text="Minutes"></TextView>
    </LinearLayout>
    <LinearLayout android:layout_toLeftOf="@+id/wvSS" android:layout_height="wrap_content" android:layout_width="wrap_content" android:orientation="vertical" android:id="@+id/llSS" android:layout_marginLeft="10dip">
        <kankan.wheel.widget.WheelView android:id="@+id/wvSS" android:layout_height="wrap_content" android:layout_width="50dip"/>
        <TextView android:layout_height="wrap_content" android:textColor="#FFFFFF" android:textSize="12sp" android:layout_marginTop="3dip" android:layout_width="fill_parent" android:gravity="center_horizontal" android:id="@+id/tvSS" android:text="Seconds"></TextView>
    </LinearLayout>
    <LinearLayout android:layout_toLeftOf="@+id/wvMS" android:layout_height="wrap_content" android:layout_width="wrap_content" android:orientation="vertical" android:id="@+id/llMS" android:layout_marginLeft="10dip">
        <kankan.wheel.widget.WheelView android:id="@+id/wvMS" android:layout_height="wrap_content" android:layout_width="65dip"/>
        <TextView android:layout_height="wrap_content" android:textColor="#FFFFFF" android:textSize="12sp" android:layout_marginTop="3dip" android:layout_width="fill_parent" android:gravity="center_horizontal" android:id="@+id/tvMS" android:text="Milli Seconds"></TextView>
    </LinearLayout>
</LinearLayout>


</RelativeLayout>

I´m using the wheel code as a library project and I´m loading this layout 
inflating it in a new view and loading it inside a quick action.
I´m filling it´s values using a NumericWheelAdapter.
The behavior for me is: if I touch exactely on the gray frame it moves the 
wheel just a bit. As my finger gets away from the center it stops. If I double 
touch the center the number center again but I can´t scroll the wheel at all. 
It´s just a prety small move.

Solved the problem for me!
(having a WheelView inside a ScrollView)


Thank you so much!

Any ideas?

I'm working on it, will comment soon

gsimoes,

Could you please provide sources (as less as possible) that reproduce your 
issue? I mean an activity code that works with this provided layout.

Provided layout works fine for me.

All I did was to add a NumericWheelAdapter to one of the wheels.
When I try to scrool it it seems to lose the touch just after my finger leaves 
the center of the wheel.
As I told you this layout is inflated to a view which is exhibited as a quick 
action. that´s just it. :(

In this case it depends on your implementation of a quick action.
So, without code that reproduces this issue I'm unable to help you.

All that the wheel needs for scrolling is the touching event that depends on 
the parent behavior.

I will check it out again and see if I can find a way out. I´ve tried many 
native widgets and since they all work, I may find a fix for the problem.

Thanks,
Gabriel Simões

Fixed in the latest version! thank you very much.

Great :)

I'm experiencing this issue again, on Android 4.0 devices. The wheels refuse to 
move if in a ScrollView. Works fine on pre-4.0 devices. Anyone else having this 
problem?

Im having the same problem, wheel stopped workng when my phone upgraded to 4.0

i have the same problem too: android 4.0

This is not fixed. I have the latest version of the Wheel but running on a real 
device (Samsung Galaxy SII) with Android 4.0.4 the Wheel scrolls inside a 
ScrollView but it is VERY unresponsive. I need to make sure to click precisely 
in the center of the wheel hold my position for a moment and slowly scroll. 
With the same wheel outside of the ScrollView it functions flawlessly.

My layout:

--------------main layout
LinearLayout
 ScrollView
  LinearLayout
-----------------compound control layout
   LinearLayout
    WheelView
    WheelView
    WheelView

Not sure if it matters but the direct parent of the wheel is not the ScrollView 
so the call to getParent().requestDisallowInterceptTouchEvent(true) might not 
be working properly. The WheelView is inside a compound control and I believe 
the parent LinearLayout is being merged into the next parent so the end result 
overall is only 2 LinearLayouts not 3 (I could be mistaken about that). 

I tried to put a while loop in its place that recursively went through all 
parent checking for ScrollViews and making the appropriate call as needed but 
this didn't work either.

[deleted comment]

I found a solution to this. In WheelView.java on line 611 change the switch 
statement to the following:

switch (event.getAction()) {
    case MotionEvent.ACTION_DOWN: //added to fix problem
    case MotionEvent.ACTION_MOVE:
        if (getParent() != null) {
            getParent().requestDisallowInterceptTouchEvent(true);
    }
    break;

    case MotionEvent.ACTION_UP:
        if (getParent() != null) { //added to fix problem, this may be uneeded
            getParent().requestDisallowInterceptTouchEvent(false);
        }

    if (!isScrollingPerformed) {
        int distance = (int) event.getY() - getHeight() / 2;
        if (distance > 0) {
            distance += getItemHeight() / 2;
        } else {
                distance -= getItemHeight() / 2;
        }
        int items = distance / getItemHeight();
        if (items != 0 && isValidItemIndex(currentItem + items)) {
                notifyClickListenersAboutClick(currentItem + items);
            }
    }
    break;
}