Android | Get all children elements of a ViewGroup

Question

getChildAt(i) on gets only the direct children of a ViewGroup, is it possible to access to all children without doing nested loops?

Answer 1

Here is my (recursive) solution that prints the hierarcy like this:

android.widget.LinearLayout children:2  id:-1
  android.view.View  id:2131624246
  android.widget.RelativeLayout children:2  id:2131624247
    android.support.v7.widget.AppCompatTextView  id:2131624248
    android.support.v7.widget.SwitchCompat  id:2131624249


 public static String getViewHierarcy(ViewGroup v) {
        StringBuffer buf = new StringBuffer();
        printViews(v, buf, 0);
        return buf.toString();
    }

    private static String printViews(ViewGroup v, StringBuffer buf, int level) {
        final int childCount = v.getChildCount();
        v.getId();

        indent(buf, level);
        buf.append(v.getClass().getName());
        buf.append(" children:");
        buf.append(childCount);
        buf.append("  id:"+v.getId());
        buf.append("\n");

        for (int i = 0; i < childCount; i++) {
            View child = v.getChildAt(i);
            if ((child instanceof ViewGroup)) {
                printViews((ViewGroup) child, buf, level+1);
            } else {
                indent(buf, level+1);
                buf.append(child.getClass().getName());
                buf.append("  id:"+child.getId());
                buf.append("\n");
            }
        }
        return buf.toString();
    }

    private static void indent(StringBuffer buf, int level) {
        for (int i = 0; i < level; i++) {
            buf.append("  ");
        }
    }