1
我想打一個自定義的adaper其中將包含多個String
和ArrayList<ArrayList<GeofenceDetails>>
。綁定的ArrayList <ArrayList<>>在自定義適配器在Android中
private ArrayList<Geofences> geofencesArrayList;
geofencesArrayList = new ArrayList<Geofences>();
assetNameArrayList = new ArrayList<ArrayList<GeofenceDetails>>();
geofencesArrayList.add(new Geofences(id,name,type,assetNameArrayList));
adapter = new GeofenceNameListAdapter(getActivity(),geofencesArrayList);
adapter.notifyDataSetChanged();
geoListView.setAdapter(adapter);
這裏是我的自定義適配器
public class GeofenceNameListAdapter extends ArrayAdapter<ArrayList<Geofences>> {
private final Activity context;
private final ArrayList<Geofences> geofences;
//song list and layout
private LayoutInflater view;
// private static LayoutInflater inflater=null;
public static final String PREFERENCES = "RPREFS";
SharedPreferences sharedprefs = null;
private String ord_id = null;
private String email = null;
public GeofenceNameListAdapter(Activity context,
ArrayList<Geofences> geofences) {
super(context, R.layout.layout_geofence, geofences.size());
// TODO Auto-generated constructor stub
finder_sharedprefs = getContext().getSharedPreferences(PREFERENCES, getContext().MODE_PRIVATE);
finder_ord_id = finder_sharedprefs.getString("org_id", null);
finder_email = finder_sharedprefs.getString("email", null);
this.context = context;
this.geofences = geofences;
}
public View getView(final int position, View view, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View rowView = inflater.inflate(R.layout.layout_geofence, null, true);
TextView txtTitle = (TextView) rowView.findViewById(R.id.name);
TextView txtType = (TextView) rowView.findViewById(R.id.type);rowView.findViewById(R.id.delete);
txtTitle.setText(geofences.get(position).getTitle());
txtType.setText(geofences.get(position).getType());
return rowView;
}
我可以看到geofencesArrayList
一切。這裏我打印的數據是geofencesArrayList
for (int l = 0; l<geofencesArrayList.size(); l++) {
Log.d("GEOFENCE_DETAILS", geofencesArrayList.get(l).getId().toString());
Log.d("GEOFENCE_DETAILS", geofencesArrayList.get(l).getTitle().toString());
Log.d("GEOFENCE_DETAILS", geofencesArrayList.get(l).getType().toString());
// Log.d("GEOFENCE_DETAILS", geofencesArrayList.get(l).getPoints().toString());
Log.d("GEOFENCE_DETAILS", geofencesArrayList.get(l).getEnforcedData().toString());
}
但問題是Adapter不顯示任何數據。我認爲我的自定義適配器出了問題,但我無法弄清楚。
我感謝您的建議。讓我知道如何創建一個自定義適配器來顯示多個字符串和ArrayList<ArrayList<>>
。
在此先感謝。
關於代碼質量的兩件事:A)命名......將確切類型放入您的名稱沒有意義B)您也可以**不**要在您的類型上使用特定的實現類;你最好直接寫'private List geofences = new ArrayList <>();'。更容易閱讀和使用! –
GhostCat
沒有數據顯示,因爲您在適配器中發送了錯誤的數組列表。您定義的GeofenceNameListAdapter構造與ArrayList的而與初始化ArrayList中的適配器>()。 –
Alvi
謝謝@GhostCat。我去做。 – anuradha