ここでの初めてのことですが、この質問の答えを2日間探していますが、何も機能しません。ここでは、ユーザーが選択したアイテムを長押ししたときにMenuOptions(編集、削除)を表示したいと思います。私のコード:
public class ProjetoProTelefoneActivity extends ListActivity {
public final static String ID_EXTRA = "br.com.DaniloDeLuca.ProjetoProTelefone._ID";
Cursor modelo = null;
RestaurantAdapter adapter = null;
RestauranteHelper helper=null;
SharedPreferences prefs=null;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
helper = new RestauranteHelper(this);
prefs = PreferenceManager.getDefaultSharedPreferences(this);
initList();
prefs.registerOnSharedPreferenceChangeListener(prefListener);
}
public void onDestroy(){
super.onDestroy();
helper.close();
}
public void onListItemClick(ListView list, View view,
int position,long id){
Intent i=new Intent(ProjetoProTelefoneActivity.this, DetailForm.class);
i.putExtra(ID_EXTRA, String.valueOf(id));
startActivity(i);
}
public void onListItemLongClic( View view,int position,Menu menu){
new MenuInflater(this).inflate(R.menu.option,menu);
super.onCreateOptionsMenu(menu);
}
//hook into menu button for activity
public boolean onCreateOptionsMenu(Menu menu){
new MenuInflater(this).inflate(R.menu.option,menu);
return(super.onCreateOptionsMenu(menu));
}
/// when menu button option selected
public boolean onOptionsItemSelected(MenuItem item){
if(item.getItemId()==R.id.add){
startActivity(new Intent(ProjetoProTelefoneActivity.this, DetailForm.class));
return(true);
}
else if(item.getItemId()==R.id.prefs){
startActivity(new Intent(this, EditPreferences.class));
return(true);
}
return(super.onOptionsItemSelected(item));
}
private SharedPreferences.OnSharedPreferenceChangeListener prefListener=
new SharedPreferences.OnSharedPreferenceChangeListener() {
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
String key) {
if(key.equals("sort_order")){
initList();
}
}
};
private void initList(){
if(modelo!=null){
stopManagingCursor(modelo);
modelo.close();
}
modelo =helper.getAll(prefs.getString("sort_order","nome DESC"));
startManagingCursor(modelo);
adapter = new RestaurantAdapter(modelo);
setListAdapter(adapter);
}
class RestaurantAdapter extends CursorAdapter {
RestaurantAdapter(Cursor c) {
super(ProjetoProTelefoneActivity.this, c);
}
public void bindView(View row, Context ctxt,
Cursor c) {
RestaurantHolder holder=(RestaurantHolder)row.getTag();
holder.populateFrom(c, helper);
}
public View newView(Context ctxt, Cursor c,
ViewGroup parent) {
LayoutInflater inflater=getLayoutInflater();
View row=inflater.inflate(R.layout.row, parent, false);
RestaurantHolder holder=new RestaurantHolder(row);
row.setTag(holder);
return(row);
}
}
static class RestaurantHolder {
private TextView name=null;
private TextView address=null;
private ImageView icon=null;
RestaurantHolder(View row) {
name=(TextView)row.findViewById(R.id.title);
address=(TextView)row.findViewById(R.id.address);
icon=(ImageView)row.findViewById(R.id.icon);
}
void populateFrom(Cursor r,RestauranteHelper helper) {
name.setText(helper.getNome(r));
address.setText(helper.getEnd(r));
if (helper.getTipo(r).equals("casa")) {
icon.setImageResource(R.drawable.casa_icon);
}
else if (helper.getTipo(r).equals("apartamento")) {
icon.setImageResource(R.drawable.apartamento_icon);
}
else {
icon.setImageResource(R.drawable.comercio_ico);
}
}
}
}
これは、MenuButtonを選択した場合にのみ機能します。しかし、「MenuButton」アクティビティをLongPressアクションにしたいのですが、それが明確かどうかはわかりません。