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POAndroid Custom expandeablelistivew without xml layout
 

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    <p>I am following below code to create expandablistView in android withour xml layout.its working fine,but I don't know how I can change an image If I use an image in child/group layout ? I already done code to adding the ImageView on childes/group views but how I can refresh/change the image posted using ImageView on child/group view . . Thanks in advance for guide</p> <p>public class GundamExpAdapter extends BaseExpandableListAdapter { /<em>-------------------------- Fields --------------------------</em>/</p> <pre><code>private final HashMap&lt;String, ArrayList&lt;String&gt;&gt; myData = new HashMap&lt;String, ArrayList&lt;String&gt;&gt;(); private final HashMap&lt;Integer, String&gt; lookUp = new HashMap&lt;Integer, String&gt;(); private final Context context; /*-------------------------- Public --------------------------*/ public GundamExpAdapter(final Context con) { context = con; } public boolean AddGroup(final String groupName, final ArrayList&lt;String&gt; list) { final ArrayList&lt;String&gt; prev = myData.put(groupName, list); if (prev != null) return false; lookUp.put(myData.size() - 1, groupName); notifyDataSetChanged(); return true; } @Override public Object getChild(int groupPos, int childPos) { if (lookUp.containsKey(groupPos)) { final String str = lookUp.get(groupPos); final ArrayList&lt;String&gt; data = myData.get(str); return data.get(childPos); } return null; } @Override public long getChildId(int groupPos, int childPos) { return 0; } @Override public View getChildView(int groupPos, int childPos, boolean isLastChild, View convertView, ViewGroup parent) { LinearLayout linear = new LinearLayout(context); final LayoutParams params = new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT); TextView text = new TextView(context); // Indent final String str = "\t\t\t" + (String)getChild(groupPos, childPos); linear = new LinearLayout(context); linear.setOrientation(LinearLayout.VERTICAL); text.setLayoutParams(params); text.setText(str); linear.addView(text); return linear; } @Override public int getChildrenCount(int groupPos) { if (lookUp.containsKey(groupPos)) return myData.get(lookUp.get(groupPos)).size(); return 0; } @Override public Object getGroup(int groupPos) { if (lookUp.containsKey(groupPos)) return myData.get(lookUp.get(groupPos)); return null; } @Override public int getGroupCount() { return myData.size(); } @Override public long getGroupId(int groupPos) { return 0; } @Override public View getGroupView(int groupPos, boolean isExpanded, View convertView, ViewGroup parent) { LinearLayout linear = new LinearLayout(context); final LayoutParams params = new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT); TextView text = new TextView(context); // Push the group name slightly to the right for drop down icon final String str = "\t\t" + lookUp.get(groupPos); linear = new LinearLayout(context); linear.setOrientation(LinearLayout.VERTICAL); text.setLayoutParams(params); text.setText(str); text.setTextSize(18.0f); linear.addView(text); return linear; } @Override public boolean hasStableIds() { return false; } @Override public boolean isChildSelectable(int groupPos, int childPos) { return false; } </code></pre> <p>} And its activity as below</p> <pre><code>public class Main extends ExpandableListActivity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //setContentView(R.layout.main); GundamExpAdapter gea = new GundamExpAdapter(this); ArrayList&lt;String&gt; models = new ArrayList&lt;String&gt;(); models.add("NZ 666 Kshatriya"); models.add("Unicorn"); models.add("Sinanju"); gea.AddGroup("Unicorn", models); models = new ArrayList&lt;String&gt;(); models.add("DeathScythe"); models.add("Altron"); models.add("HeavyArms"); models.add("SandRock"); models.add("Epyon"); models.add("ZERO"); gea.AddGroup("Wing", models); setListAdapter(gea); ExpandableListView elv = getExpandableListView(); elv.setTextFilterEnabled(true); //listview.setOnItemClickListener(OnClickingListItem()); } } </code></pre>
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