I need to disable the second element in my navigation drawer until a certain task is finished. Here is how I disable the second element:
nav_item_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@color/dark_green"
android:state_pressed="true" />
<item android:drawable="@android:color/transparent"
android:state_enabled="true" />
<item android:drawable="@android:color/darker_gray"
android:state_enabled="false" />
</selector>
nav_fragment.xml (wrapped in a DrawerLayout)
<ListView
android:id="@+id/left_drawer"
android:layout_width="@dimen/nav_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="start"
android:cacheColorHint="#0000"
android:background="@drawable/gradient_radial_backround"
android:choiceMode="singleChoice"
android:divider="@color/green_light"
android:dividerHeight="1dp" />
nav_list_item.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/nav_list_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/nav_item_selector"
android:orientation="horizontal"
android:padding="@dimen/standard_padding">
<ImageView
android:id="@+id/nav_list_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@null"
android:src="@drawable/ic_launcher" />
<TextView
android:id="@+id/nav_list_text"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fontFamily="sans-serif-light"
android:gravity="center_vertical"
android:minHeight="@dimen/listPreferredItemHeightSmall"
android:paddingLeft="@dimen/activity_horizontal_small_margin"
android:text="List Item"
android:textSize="@dimen/text_nav_list_entry"
android:textColor="@color/dark_green" />
</LinearLayout>
Activity:
public class NavItemAdapter extends ArrayAdapter<String> {
LayoutInflater inflater;
private String[] listItems;
public NavItemAdapter(Context context, int textViewResourceId, String[] listItems) {
super(context, textViewResourceId, listItems);
this.listItems = listItems;
inflater = LayoutInflater.from(context);
}
@Override
public boolean isEnabled(int position)
{
if(position == 1)
return false;
else
return true;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null)
convertView = new NavItemView(getContext());
NavItemView navItemView = (NavItemView) convertView;
switch (position) {
case 0:
navItemView.setUpItem(R.drawable.ic_nav_1_checked, listItems[position], R.drawable.ic_nav_1);
break;
case 1:
navItemView.setUpItem(R.drawable.ic_nav_2_checked, listItems[position], R.drawable.ic_nav_2);
break;
case 2:
navItemView.setUpItem(R.drawable.ic_nav_3_checked, listItems[position], R.drawable.ic_nav_3);
break;
case 3:
navItemView.setUpItem(R.drawable.ic_nav_4_checked, listItems[position], R.drawable.ic_nav_4);
break;
case 4:
navItemView.setUpItem(R.drawable.ic_nav_5_checked, listItems[position], R.drawable.ic_nav_5);
break;
case 5:
navItemView.setUpItem(R.drawable.ic_nav_6_checked, listItems[position], R.drawable.ic_nav_6);
break;
}
return convertView;
}
}
class NavItemView extends LinearLayout implements Checkable {
private View v;
private ImageView iconView;
private TextView textView;
private Boolean checked = false;
private int mImageChecked;
private int mImage;
public NavItemView(Context context) {
super(context);
LayoutInflater inflater = LayoutInflater.from(context);
v = inflater.inflate(R.layout.list_item_navdrawer, this, true);
assert v != null;
iconView = (ImageView) v.findViewById(R.id.nav_list_icon);
textView = (TextView) v.findViewById(R.id.nav_list_text);
}
@Override
public boolean isChecked() {
return checked;
}
@Override
public void setChecked(boolean checked) {
this.checked = checked;
if (isChecked()) {
setBackgroundColor(getResources().getColor(R.color.transparent));
textView.setTextColor(getResources().getColor(R.color.light_pink));
iconView.setImageResource(mImageChecked);
} else {
//Reset to default
setBackgroundColor(getResources().getColor(R.color.transparent));
textView.setTextColor(getResources().getColor(R.color.green_lighter));
iconView.setImageResource(mImage);
}
}
@Override
public void toggle() {
checked = !checked;
}
private void setUpItem(int imageChecked, String title, int image) {
mImageChecked = imageChecked;
mImage = image;
textView.setText(title);
iconView.setImageResource(image);
}
}
What happens is the item is disabled, but the selector does not kick in (it stays the same colour). Not only that but that item's divider disappears which is even worse! What is happening here?
