How to set the color of the first column of a Listview item? - android-listview

Question

I have a Listview (shown in an AlertDialog) that is composed by two columns, made with a HashMap (got the idea somewhere here).
Each column is a TextView. It works well.
Now I want to change the textcolor of the first column of a given row, but I have no idea on how to pick and set this... I googled for hours! Any clues??
This is my code (lists is a SortedSet):
public void showlistdesc () {
ListView listview = new ListView(this);
listview.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
listview.setSoundEffectsEnabled(true);
listview.setSelector(R.drawable.selector);
Integer i=0, pos = 0;
ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();
HashMap<String, String> map;
for (String l : lists) {
if (l.equals(currlist)) pos = i;
i++;
map = new HashMap<String, String>();
map.put("list", l);
map.put("desc", getlistdesc(l, false));
mylist.add(map);
}
listview.setAdapter(new SimpleAdapter(this, mylist, R.layout.lists_row,
new String[] {"list", "desc"}, new int[] {R.id.list1, R.id.desc1}));
AlertDialog.Builder builder = new AlertDialog.Builder(AveActivity.this)
.setView(listview)
.setIcon(R.drawable.ic_launcher)
.setTitle(lists.size() + " bird lists in databases");
final AlertDialog dial = builder.create();
//Scrolls the listview to this position at top
listview.setSelection(pos);
dial.show();
}
Thanks!
EDIT
Tried to extend SimpleAdapter with the following code, and all I can see are solid black rows:
public class MySimpleAdapter extends SimpleAdapter {
private Context context;
public MySimpleAdapter(Context context,List<? extends Map<String, ?>> data,
int resource, String[] from, int[] to) {
super(context, data, resource, from, to);
this.context = context;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater inflater = (LayoutInflater) this.context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.lists_row, null);
}
TextView list1 = ((TextView) v.findViewById(R.id.list1));
TextView desc1 = ((TextView) v.findViewById(R.id.desc1));
if (v.isPressed()) {
v.setBackgroundColor(context.getResources().getColor(R.color.pressed));
list1.setTypeface(null, 1);
list1.setTextColor(context.getResources().getColor(R.color.selected));
} else {
v.setBackgroundColor(context.getResources().getColor(R.color.black));
if (v.isSelected()) {
list1.setTypeface(null, 1);
list1.setTextColor(context.getResources().getColor(R.color.checked));
desc1.setTextColor(context.getResources().getColor(R.color.white));
} else {
list1.setTypeface(null, 0);
list1.setTextColor(context.getResources().getColor(R.color.normal));
desc1.setTextColor(context.getResources().getColor(R.color.lesswhite));
}
}
return v;
}
}

Answer 1

Now you have special requirement, it is no longer simple, you can't use SimpleAdapter to achieve the effect you are asking. You will have to extend BaseAdapter and in the getView() method you can do the following:
if (position == 0) {
convertView.setBackground(color1);
} else {
convertView.setBackground(color2);
}
Or if what you want is a Header, you can use ListView.addHeaderView() without much hassle.

Answer 2

I found a solution, essentially contained in several posts here.
What I did was to use listview.setItemChecked(pos, true);, something that I tried before and failed, because it showed nothing. The problem was that LinearLayout does not implement Checkable. So I implemented it (code found essentially somewhere here also) with this:
public class CheckableLinearLayout extends LinearLayout implements Checkable {
private boolean isChecked;
public CheckableLinearLayout(Context context) {
super(context);
}
public CheckableLinearLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
public void setChecked(boolean isChecked) {
this.isChecked = isChecked;
TextView list1 = ((TextView) findViewById(R.id.list1));
TextView desc1 = ((TextView) findViewById(R.id.desc1));
if (isPressed()) {
list1.setTextColor(getResources().getColor(R.color.selected));
setBackgroundColor(getResources().getColor(R.color.pressed));
} else {
setBackgroundColor(getResources().getColor(R.color.black));
if (isChecked) {
list1.setTextColor(getResources().getColor(R.color.checked));
desc1.setTextColor(getResources().getColor(R.color.white));
} else {
list1.setTextColor(getResources().getColor(R.color.normal));
desc1.setTextColor(getResources().getColor(R.color.lesswhite));
}
}
}
public boolean isChecked() {
return isChecked;
}
public void toggle() {
setChecked(!isChecked);
}
}
And that's it. No need to use selector, nor to touch the adapter. To make this work, in the row layout, use <com.[yourpackage].CheckableLinearLayout instead of the usual LinearLayout.