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androidlistviewsharedpreferences

Populating ListView with data saved in sharedPreferences


I have save about 6 rows saved in shared preference and each row contains name, description, price etc. I have List in which i have to populate name, description, price in each row retrieved from shared preferences. How to get all data in row and populate list?

I have done

public class LazyAdapter extends BaseAdapter {

        private Activity activity;
        private  LayoutInflater inflater=null;
        private ArrayList<HashMap<String, Object>> data;
        //public ImageLoader imageLoader; 
        int i=0;
        public LazyAdapter(Activity a) {
            activity = a;
            inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            //imageLoader=new ImageLoader(activity.getApplicationContext());
        }

        public int getCount() {
            return data.size();
        }

        public Object getItem(int position) {
            return position;
        }

        public long getItemId(int position) {
            return position;
        }

        public View getView(int position, View convertView, ViewGroup parent) {
            View vi=convertView;
            if(convertView==null)
                vi = inflater.inflate(R.layout.order_list, null);

            TextView orderDishDescription = (TextView)vi.findViewById(R.id.orderDishDescription); 
            TextView OrderDishName = (TextView)vi.findViewById(R.id.OrderDishName); 
            TextView OrderDishPrice = (TextView)vi.findViewById(R.id.OrderDishPrice); 
            ImageView imageview=(ImageView) vi.findViewById(R.id.list_image_order);
            //ImageView thumb_image=(ImageView)vi.findViewById(R.id.list_image); /
            //HashMap<String, Object> song = new HashMap<String, Object>();
        //  song = data.get(position);


            Log.i("iiiiii  "," " +i++);

//          Log.i("objj.Get_O_Id()  ",objj.Get_O_Id());
//          Log.i("objj.GetProductName()  ",objj.GetProductName());
//          Log.i("objj.GetDescription()  ",objj.GetDescription());
//          

        OrderDishPrice.setText(OrderSharedPrefences.getDish_Price(getApplicationContext()));
        OrderDishName.setText(OrderSharedPrefences.getUserName(getApplicationContext()));
        orderDishDescription.setText(OrderSharedPrefences.getDish_Description(getApplicationContext()));
        //imageview.setImageBitmap(objj.GetImage());


        return vi;
    }
    }

Solution

  • Your Adapter is Okay just make set data from your Activity class, something like that- First get data from preference in set and set into array-list then set into list-view.

    EDIT

    Set prefrence as like that-

                        SharedPreferences.Editor sEdit = sPrefs
                                .edit();
                        sEdit.putString("NAME", content);
                        sEdit.putStringSet("args", listArraySet);
                        sEdit.commit();
    

    And get any where like that-

     sPrefs=PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
            listArraySet=new HashSet<String>();
            listArraySet=sPrefs.getStringSet(name1,new HashSet<String>());
            
            list=new ArrayList<String>(listArraySet);
            ArrayAdapter<String> ao=new ArrayAdapter<String>(this, R.layout.songs_list_item, R.id.songTitle, list);
            lv.setAdapter(ao);
    

    whole code for set into listview-

    @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.songs_list);
            list = new ArrayList<String>();
            lv=(ListView)findViewById(R.id.listView1);
            
            sPrefs=PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
            listArraySet=new HashSet<String>();
            listArraySet=sPrefs.getStringSet(name1,new HashSet<String>());
            
            list=new ArrayList<String>(listArraySet);
            ArrayAdapter<String> ao=new ArrayAdapter<String>(this, R.layout.songs_list_item, R.id.songTitle, list);
            lv.setAdapter(ao);
            
            //-------------------------CLICK ON LIST ITEM_-----------------------
            lv.setOnItemClickListener(new OnItemClickListener() {
    
                @Override
                public void onItemClick(AdapterView<?> parent, View view,
                        int position, long id) {
                     int index = parent.getPositionForView(view);               
                    String filename = list.get(index);              
                    
                }
            });
        }
    }