How to change ExpandableListView group indicator position?

Question

I want to change the ExpandableListView group indicator to right with padding.

I used custom adapter to load data to ExpandableListV

Answer 1

private void setGroupIndicatorToRight() {
    /* Get the screen width */
        DisplayMetrics dm = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(dm);
        int width = dm.widthPixels;
        expandableList.setIndicatorBounds(width - getDipsFromPixel(35), width - getDipsFromPixel(5));
    }
    // Convert pixel to dip
    public int getDipsFromPixel(float pixels) {
        // Get the screen's density scale
        final float scale = getResources().getDisplayMetrics().density;
        // Convert the dps to pixels, based on density scale
        return (int) (pixels * scale + 250.5f);
    }

Answer 2

If you want to move indicator to right Just create a dimen in res folder. It will be like that:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <dimen name="my_value">350dp</dimen>
</resources>

Then in the <ExpandableListView/> add like that:

<ExpandableListView
        ...
        android:indicatorLeft="@dimen/my_value"
        .../>

You can change the dp according to device settings

Answer 3

setIndicatorBounds(int, int) does not work properly for Android 4.3. They introduced a new method setIndicatorBoundsRelative(int, int) which works ok for 4.3.

public int GetPixelFromDips(float pixels) {
    // Get the screen's density scale 
    final float scale = getResources().getDisplayMetrics().density;
    // Convert the dps to pixels, based on density scale
    return (int) (pixels * scale + 0.5f);
}

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    DisplayMetrics metrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(metrics);
    int width = metrics.widthPixels; 
    if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN_MR2) {
        explvList.setIndicatorBounds(width-GetPixelFromDips(35), width-GetPixelFromDips(5));
    } else { 
        explvList.setIndicatorBoundsRelative(width-GetPixelFromDips(35), width-GetPixelFromDips(5));
    }
}