ExpandableListView

library/app/src/main/java/com/github/paolorotolo/expandableheightlistview/ExpandableHeightExpandableListView.java

@@ -0,0 +1,44 @@
+package com.github.paolorotolo.expandableheightlistview;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.ViewGroup;
+import android.widget.ExpandableListView;
+
+public class ExpandableHeightExpandableListView extends ExpandableListView {
+
+    boolean expanded = false;
+
+    public ExpandableHeightExpandingListView(Context context) {
+        super(context);
+    }
+
+    public ExpandableHeightExpandingListView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public ExpandableHeightExpandingListView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    public boolean isExpanded() {
+        return expanded;
+    }
+
+    @Override
+    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        if (isExpanded()) {
+            int expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK, MeasureSpec.AT_MOST);
+            super.onMeasure(widthMeasureSpec, expandSpec);
+
+            ViewGroup.LayoutParams params = getLayoutParams();
+            params.height = getMeasuredHeight();
+        } else {
+            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        }
+    }
+
+    public void setExpanded(boolean expanded) {
+        this.expanded = expanded;
+    }
+}