Binding varargs using android databinding library

Question

I am trying to write a custom setter for SwipeRefreshLayout's

setColorScheme(int... colors).

But it seems that its parameter is varargs.

I can only bind a single color now like the following:

   @BindingAdapter("app:colorSchemeResources") 
    public static void bindRefreshColor(SwipeRefreshLayout swipeRefreshLayout,  int colorResId) {
            swipeRefreshLayout.setColorSchemeColors(colorResId);
    }

xml:

  <android.support.v4.widget.SwipeRefreshLayout
                android:id="@+id/swipe_container"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                app:colorSchemeResources ="@{@color/primary}"
                />

My question is:

How can I write a custom setter for varargs?

How to bind varargs in the xml file?

please share some code what have you tried so far. xml file too. — drulabs
– drulabs, Commented Apr 29, 2016 at 3:20
sure, I have updated the question. I can only bind a single color by far. — Noitacol
– Noitacol, Commented Apr 29, 2016 at 3:39

exkoria · Accepted Answer · 2016-04-29 07:40:23Z

1

Please try this:

Specify an integer array containing the colors you want in your colors.xml for example:

    <integer-array name="color_scheme" >
       <item>@color/first_color</item>
        <item>@color/second_color</item>
    </integer-array>

Change your bindingadapter like this:

    @BindingAdapter("app:colorSchemeResources")
    public static void bindRefreshColor(SwipeRefreshLayout swipeRefreshLayout, int[] colorResIds) {
    swipeRefreshLayout.setColorSchemeColors(colorResIds);
    }

And reference your array in your view:

        <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/swipe_refresh_layout"
        android:layout_width="match_parent"
        app:colorSchemeResources ="@{@intArray/color_scheme}"
        android:layout_height="wrap_content">

answered Apr 29, 2016 at 7:40

exkoria

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3 Comments

Noitacol Over a year ago

Thanks, it woks like a charm.The intArray is just what I want.

kondal Over a year ago

Where did you place integer-array name="color_scheme" ?

n.arrow001 Over a year ago

@kondal you can put it in values/colors etc xmls

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