I have a ListAdapter with a lot of different layouts for the rows. To have a clean code I want to outsource the layouts for the rows from the getView() of the adapter in View classes. Is it possible to inflate a XML layout into a custom view? I've only found the LayoutInflater but it returns a View and that does not help. I want to have something like the setLayout() of an Activity. Is this possible?
Thanks!
You can have a custom row view and inflate your xml in its constructor:
public MyRow extends LinearLayout { public MyRow(Context context) { super(context); LayoutInflater.from(context).inflate(R.layout.my_row, this, true); ... other initialization ... } } and then use merge in my_row.xml:
<?xml version="1.0" encoding="utf-8"?> <merge xmlns:android="http://schemas.android.com/apk/res/android"> ... your row layout ... </merge> The merge element causes its children to be added as children of your custom view. Check out Merging Layouts for more info.
merge can be used only with a valid view group root and attachtoroot=true. Why? I'm using exatcly the same call, I'm using an xml with merge as a root, with no attributes.
I alwas use a custom Adapter with a viewholder like:
public class CalendarAdapter extends BaseAdapter { protected static CalViewHolder holder; private LayoutInflater mInflater; public HashMap<Integer,String[]> appointments = new HashMap<Integer,String[]>(); public CalendarAdapter(Context context,HashMap<Integer,String[]> set_appointments) { // Cache the LayoutInf mInflater = LayoutInflater.from(context); appointments = set_appointments; } @Override public int getCount() { // TODO Auto-generated method stub return appointments == null ? 0:appointments.size(); } @Override public Object getItem(int arg0) { // TODO Auto-generated method stub return null; } @Override public long getItemId(int arg0) { // TODO Auto-generated method stub return 0; } @Override public View getView(int position, View convertView, ViewGroup parent) { if (convertView == null) { convertView = mInflater.inflate(R.xml.appointment, null); holder = new CalViewHolder(); holder.app_lay = (LinearLayout) convertView.findViewById(R.id.appointment_layout); holder.app_head = (TextView) convertView.findViewById(R.id.appointment_head); holder.app_body = (TextView) convertView.findViewById(R.id.appointment_body); convertView.setTag(holder); }else{ holder = (CalViewHolder) convertView.getTag(); } holder.app_head.setText(appointments.get(position)[0]); holder.app_body.setText(appointments.get(position)[1]); return convertView; } static class CalViewHolder { LinearLayout app_lay; TextView app_head; TextView app_body; } }
