I am using following code for DrawerLayout menu and sub-menu. Some menu do not have sub-menu. For them I want to catch the menu click action, otherwise I want to catch the sub-menu click action.
activity_dashboard.xml
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:auto="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp"
android:background="#E6E6E6"
android:orientation="horizontal" >
...................
</RelativeLayout>
<ExpandableListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#E6E6E6"
android:choiceMode="singleChoice"
android:divider="@android:color/white"
android:dividerHeight="1dp" />
</android.support.v4.widget.DrawerLayout>
DashboardActivity.java
public class DashboardActivity extends ActionBarActivity {
.......
.........
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dashboard);
// /////////////////////// naviation menu ////////////////////////////
mMenuItemTitles = getResources().getStringArray(R.array.menuitem_array);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ExpandableListView) findViewById(R.id.left_drawer);
Log.d("Memu Item no.", "" + mMenuItemTitles.length);
// set a custom shadow that overlays the main content when the drawer
// opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
GravityCompat.START);
// set up the drawer's list view with items and click listener
/*
* mDrawerList.setAdapter(new ArrayAdapter<String>(this,
* R.layout.drawer_list_item, mMenuItemTitles));
*/
mDrawerList.setAdapter(new NavigationMenuAdapter(this, getMenuItems(),
getSubmenuItems()));
mDrawerList.setOnGroupClickListener(new DrawerGrpClickListener());
mDrawerList.setOnChildClickListener(new DrawerChildClickListener());
// enable ActionBar app icon to behave as action to toggle nav drawer
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the sliding drawer and the action bar app icon
mDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description for accessibility */
R.string.drawer_close /* "close drawer" description for accessibility */
) {
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
invalidateOptionsMenu(); // creates call to
// onPrepareOptionsMenu()
}
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
invalidateOptionsMenu(); // creates call to
// onPrepareOptionsMenu()
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
// /////////////////////////////////////////////////////////////////
...................
................
}
private ArrayList<String> getMenuItems() {
ArrayList<String> groupItem = new ArrayList<String>();
groupItem.add("CONTENT");
groupItem.add("BAZZAR");
groupItem.add("PERFORMANCE");
groupItem.add("PROGRESS");
groupItem.add("ASSIGNMENT");
return groupItem;
}
private ArrayList<Object> getSubmenuItems() {
// TODO Auto-generated method stub
ArrayList<Object> childItem = new ArrayList<Object>();
ArrayList<String> child = new ArrayList<String>();
child.add("Physics");
child.add("Chemistry");
child.add("Mathematics");
child.add("Geography");
child.add("History");
child.add("English");
childItem.add(child);
child = new ArrayList<String>();
child.add("Physics");
child.add("Chemistry");
child.add("Mathematics");
child.add("Geography");
child.add("History");
child.add("English");
childItem.add(child);
childItem.add(null);
childItem.add(null);
..........
}
/* The click listner for ListView in the navigation drawer */
private class DrawerGrpClickListener implements
ExpandableListView.OnGroupClickListener {
@Override
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {
// TODO Auto-generated method stub
Log.d("Go to action(Grp)", "" + groupPosition);
selectItem(groupPosition);
if (groupPosition == 2) {
return true;
} else if (groupPosition == 3) {
return true;
}
return false;
}
}
private class DrawerChildClickListener implements
ExpandableListView.OnChildClickListener {
@Override
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
// TODO Auto-generated method stub
Log.d("Go to action(Child)", groupPosition + "/" + childPosition);
if (groupPosition == 0) {
Intent launchIntent = new Intent(DashboardActivity.this,
ContentActivity.class);
launchIntent.putExtra("subjectID", childPosition);
startActivity(launchIntent);
return true;
} else if (groupPosition == 1) {
return true;
} else if (groupPosition == 4) {
return true;
}
return true;
}
}
private void selectItem(int position) {
// update the main content by replacing fragments
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
// mDrawerLayout.closeDrawer(mDrawerList);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.dashboard, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
NavigationMenuAdapter.java
public class NavigationMenuAdapter extends BaseExpandableListAdapter {
public ArrayList<String> groupItem, tempChild;
public ArrayList<Object> childtem = new ArrayList<Object>();
public LayoutInflater minflater;
public Activity activity;
private final Context context;
private LayoutInflater mInflater;
public NavigationMenuAdapter(Context context, ArrayList<String> grList,
ArrayList<Object> childItem) {
this.context = context;
mInflater = LayoutInflater.from(context);
groupItem = grList;
this.childtem = childItem;
}
public void setInflater(LayoutInflater mInflater, Activity act) {
this.minflater = mInflater;
activity = act;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return null;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return 0;
}
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
tempChild = (ArrayList<String>) childtem.get(groupPosition);
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = mInflater.inflate(R.layout.drawer_list_item_child,
null);
holder.menuTextView = (TextView) convertView
.findViewById(R.id.menuTextView);
convertView.setTag(holder);
} else
holder = (ViewHolder) convertView.getTag();
holder.menuTextView.setText(tempChild.get(childPosition));
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
if (((ArrayList<String>) childtem.get(groupPosition)) == null)
return 0;
return ((ArrayList<String>) childtem.get(groupPosition)).size();
}
@Override
public Object getGroup(int groupPosition) {
return null;
}
@Override
public int getGroupCount() {
return groupItem.size();
}
@Override
public void onGroupCollapsed(int groupPosition) {
super.onGroupCollapsed(groupPosition);
}
@Override
public void onGroupExpanded(int groupPosition) {
super.onGroupExpanded(groupPosition);
}
@Override
public long getGroupId(int groupPosition) {
return 0;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = mInflater.inflate(R.layout.drawer_list_item, null);
holder.menuTextView = (TextView) convertView
.findViewById(R.id.menuTextView);
holder.iconImageView = (ImageView) convertView
.findViewById(R.id.iconImageView);
holder.iconExpandCollapse = (ImageView) convertView
.findViewById(R.id.iconExpandCollapse);
holder.itemBox = (RelativeLayout) convertView
.findViewById(R.id.itemBox);
convertView.setTag(holder);
} else
holder = (ViewHolder) convertView.getTag();
Log.d("getGroupView","groupPosition : " + groupPosition + "/" + "getChildrenCount : " + getChildrenCount(groupPosition));
if (getChildrenCount(groupPosition) != 0) {
holder.iconExpandCollapse.setVisibility(View.VISIBLE);
if (isExpanded){
holder.itemBox.setBackgroundColor(Color.parseColor("#B8B8B8"));
holder.iconExpandCollapse
.setImageResource(R.drawable.icon_minus);
}else{
holder.itemBox.setBackgroundColor(Color.parseColor("#E6E6E6"));
holder.iconExpandCollapse
.setImageResource(R.drawable.icon_plus);
}
} else
holder.iconExpandCollapse.setVisibility(View.INVISIBLE);
holder.menuTextView.setText(groupItem.get(groupPosition));
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
public static class ViewHolder {
public RelativeLayout itemBox;
TextView menuTextView;
ImageView iconImageView;
ImageView iconExpandCollapse;
}
}
The above code can successfully catch the menu click option, but failed to catch any sub-menu click action. What is the problem in code?
