ExpandableListView - group indication is stretch to fit the text size

Question

I have group indication with small icon, and i use groupIndicator to call the selector to draw it but I see android by default stretch that icon to fits the text size

Answer 1

It is the implementation for indicator icon on right side in Expandable List View. It is working for me.

<ExpandableListView
    android:id="@+id/expandlv"
            android:layout_height="match_parent"
            android:layout_width="match_parent"
            android:dividerHeight="2dp"
            android:groupIndicator="@drawable/group_indicator"
            android:divider="@andorid:color/white"/>

group_indicator.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <!--<item android:state_empty="true" android:drawable="@drawable/expanded_icon" />-->
    <!--<item android:state_expanded="true" android:drawable="@drawable/collapsed_icon" />-->
    <!--<item android:drawable="@drawable/expanded_icon"/>-->


    <item android:state_empty="true">
        <layer-list>
            <item
                android:left="0dp"
                android:right="3dp"
                android:top="20dp"
                android:bottom="20dp"
                android:drawable="@drawable/expanded_icon">
            </item>
        </layer-list>
    </item>

    <item android:state_expanded="true">
        <layer-list>
            <item
                android:left="0dp"
                android:right="3dp"
                android:top="20dp"
                android:bottom="20dp"
                android:drawable="@drawable/collapsed_icon">
            </item>
        </layer-list>
    </item>

</selector>

In java source code,

DisplayMetrics metrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(metrics);
int width = metrics.widthPixels;

expListView.setIndicatorBounds(width - GetDipsFromPixel(30), width - GetDipsFromPixel(6));
expListView.setAdapter(listAdapter);