I have been trying to get a custom adapter working in my first android app.
This is the code from my app:
CustomAdapter class:
class CustomListAdapter extends BaseAdapter {
Context mContext;
List<String> notes;
public CustomListAdapter (Context context, List notes) {
mContext = context;
this.notes = notes;
}
@Override
public int getCount() {
return notes.size();
}
@Override
public String getItem(int i) {
return notes.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
// This method is called to draw each row of the list
@Override
public View getView(int index, View convertView, final ViewGroup parent) {
View vi = convertView;
if (vi == null) {
LayoutInflater inflater;
inflater = LayoutInflater.from(parent.getContext());
vi = inflater.inflate(R.layout.item_list, parent, false);
}
final Note noteModel = notes.get(index);
TextView date = (TextView) vi.findViewById(R.id.date);
date.setText("" + noteModel.getDate());
TextView title = (TextView) vi.findViewById(R.id.title);
title.setText(noteModel.getTitle());
TextView content = (TextView) vi.findViewById(R.id.content);
content.setText(noteModel.getNote());
final View view = View.inflate(mContext, R.layout.item_list, null);
return view;
List notes activity
public class ListNotesActivity extends Activity {
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo)item.getMenuInfo();
notes.remove(info.position);
populateList();
return true;
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.context_menu, menu);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_CANCELED){
return;
}
Serializable extra = data.getSerializableExtra("Note");
if (extra != null){
Note newNote = (Note)extra;
if (editingNoteId > -1){
notes.set(editingNoteId, newNote);
editingNoteId = -1;
}
else {
notes.add(newNote);
};
populateList();
//populateLateCustomAdapter();
}
}
public List<Note> notes = new ArrayList<Note>();
private ListView notesListView;
private int editingNoteId = -1;
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_notes);
ListView notesListView = (ListView)findViewById(R.id.notesListView);
notesListView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapter, View view, int itemNumber, long id) {
Intent editNoteIntent = new Intent(view.getContext(), EditNotesActivity.class);
editNoteIntent.putExtra("Note", notes.get(itemNumber));
editingNoteId = itemNumber;
startActivityForResult(editNoteIntent, 1);
}
});
registerForContextMenu(notesListView);
notes.add(new Note("1 Note", "blah blah", new Date()));
notes.add(new Note("2 Note", "blah blah", new Date()));
notes.add(new Note("3 Note", "blah blah", new Date()));
notes.add(new Note("4 Note", "blah blah", new Date()));
notes.add(new Note("5 Note", "blah blah", new Date()));
notes.add(new Note("6 Note", "blah blah", new Date()));
notes.add(new Note("7 Note", "blah blah", new Date()));
notes.add(new Note("8 Note", "blah blah", new Date()));
populateList();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.list_notes, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Intent editNoteIntent = new Intent (this, EditNotesActivity.class);
startActivityForResult(editNoteIntent, 1);
return true;
}
// Populate Method
private void populateList() {
CustomListAdapter CustomAdapter = new CustomListAdapter(this, notes);
notesListView.setAdapter(CustomAdapter);
}
and this is my Note class:
public class Note implements Serializable {
private String title;
private String note;
private Date date;
// Constructor
public Note(String title, String note, Date date) {
this.title = title;
this.note = note;
this.date = date;
}
// Title Getter and Setter
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
// Note Getter and Setter
public String getNote() {
return note;
}
public void setNote(String note) {
this.note = note;
}
// Date Getter and Setter
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
}
The problem i am having is that when i try and create the
final Note noteModel = notes.get(index);
at the end of the Custom Adapter class, it gives a error saying "incompatible types, found: string, required: Note"
I know what the error means, but i have been partly copying this example i found on the internet:
public class CustomAdapter extends BaseAdapter {
private static final String TAG = CustomAdapter.class.getSimpleName();
ArrayList<DataModel> listArray;
public CustomAdapter() {
listArray = new ArrayList<DataModel>(5);
listArray.add(new DataModel("Title1", "Java", new Date()));
listArray.add(new DataModel("name2", "Python", new Date()));
listArray.add(new DataModel("name3", "Django", new Date()));
listArray.add(new DataModel("name4", "Groovy", new Date()));
listArray.add(new DataModel("name5", "Maven", new Date()));
}
@Override
public int getCount() {
return listArray.size(); // total number of elements in the list
}
@Override
public Object getItem(int i) {
return listArray.get(i); // single item in the list
}
@Override
public long getItemId(int i) {
return i; // index number
}
@Override
public View getView(int index, View view, final ViewGroup parent) {
if (view == null) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
view = inflater.inflate(R.layout.single_list_item, parent, false);
}
final DataModel dataModel = listArray.get(index);
TextView title = (TextView) view.findViewById(R.id.title);
title.setText(dataModel.getTitle());
TextView content = (TextView) view.findViewById(R.id.content);
content.setText(dataModel.getContent());
TextView date = (TextView) view.findViewById(R.id.date);
date.setText("" + dataModel.getDate());
return view;
and:
public class DataModel {
private String title;
private String content;
private Date date;
public DataModel(String title, String content, Date date) {
this.title = title;
this.content = content;
this.date = date;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
In that example the person does the same thing i am trying to do, but that code runs, etc. As far as i can see, the code is quite similar to my Note class, and custom adapter.
I have been trying to figure this out for 2 days now, but i cant seem to get it working. the is a couple of other classes in my App, but i dont think they are relevant, so i havent posted them above.
If someone could tell me how to get around this problem, i would be very grateful.
Thanks in advance
Cheers Corey