Android - Use and change Array in whole class

Question

Im trying to solve this problem for about 2 hours. So Im glad for every possible answer. Ive got a custom ListViewAdapter and it takes his content from an Array. But I have 19 Arrays and I want to change the Content(therefor the Array) based on which date the User clicks(there is a Calendar on the top with 19 Dates). Here is a picture:

enter image description here

So by default ervy time you open the App the content from the "date_1" Array will be shown(for the 25. in the calender). And when you click on an other date the content from the Array belonging to this date will be shown(e.g. 26. -> date_2, 27. date_3 and so on). Every Array has to get load from the resources and is saved in a single Array Variable.

So my problem: I can't change the Array. Here is my code:

// this is the Array Variable:

   String[] day_chosen;
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.calender);
          [...]
            prepareArrayLits();
            lview3 = (ListView) findViewById(R.id.listView1);

            adapter = new ListViewCustomAdapter(this, itemList);
            lview3.setAdapter(adapter);

            lview3.setOnItemClickListener(this);

        }

        public void onItemClick1(AdapterView<?> arg0, View arg1, int position, long id) {
            // TODO Auto-generated method stub

        }

        /* Method used to prepare the ArrayList,
         */

        public void prepareArrayLits()
        {
            // this is where the Arrays get loaded from the resource:
             day_chosen = getResources().getStringArray(R.array.date_1);

//this Array is not relvant:
            String[] sports = getResources().getStringArray(R.array.sports_array);


            itemList = new ArrayList<Object>();
             for (int counter = 0; counter < day_chosen.length; counter+=4){


                 int Intparser = Integer.parseInt(day_chosen[counter+1]);


                 AddObjectToList(imgid(Intparser),  sports[Intparser],day_chosen[counter],day_chosen[counter+3], backgroundbox(Intparser)) ;
             }


        }

        // Add one item into the Array List
        public void AddObjectToList(int image, String title, String desc, String time, int backbox)
        {

            bean = new ItemBean();
            bean.setBackBox(backbox);
            bean.setTime(time);
            bean.setDescription(desc);
            bean.setImage(image);
            bean.setTitle(title);
            itemList.add(bean);
        }

       [...]
        }

        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
            // TODO Auto-generated method stub

        }

// the onClick Events for every date:
        public void onClick(View v) {
            // TODO Auto-generated method stub




              switch(v.getId()){

              case R.id.d_1 :
// I tried to change the Array from here(But it didn't work):
                  day_chosen = getResources().getStringArray(R.array.date_1);


                  break;

              case R.id.d_2 :
                  day_chosen = getResources().getStringArray(R.array.date_2);

                  break;
              [...]

        }



    }

What have I tried:

I set up a Global Class but it didn't work
I tried to set up getters and setters. But also didn't work

I don't know how to solve this. Every possible solution is appreciated, Thanks.

Salil Pandit · Accepted Answer · 2012-07-20 22:44:59Z

So I'm guessing when you click on a Date at the top the content below changes. There are a variety of ways to do this. To solve your current problem in your current code, here is what you are going to want to do: Based on the code you've shown, I'm assuming that somewhere you have a line of code that looks like: new MyHappyAdapter(... itemList, ...) where you are passing the itemList reference, probably some kind of ArrayAdapter. If so you are going to want to add this right after your switch statement:

 public void onClick(View v) {
     switch(v.getId()){

          case R.id.d_1 :
              // I tried to change the Array from here(But it didn't work):
              day_chosen = getResources().getStringArray(R.array.date_1);
              break;

          case R.id.d_2 :
              day_chosen = getResources().getStringArray(R.array.date_2);
              break;
     }
 //Remove the old items from the list
 itemList.clear();
 //Force it setup the list again
 prepareArrayLits();
 //Tell the adapter to update the view
 adapter.notifyDatasetChanged();
 }

The adapter.notifyDatasetChanged() call tells the adapter to refresh the ListView.

As a side note, I wouldn't actually recommend you continue down this path. I'd suggest you turn this into a ViewPager where each date is a Tab and the content below is a ListFragment. You can read about ViewPager and the support jar here.

eyal-lezmy · Accepted Answer · 2012-07-20 22:44:19Z

1

I don't know how you exactly implements your Adapter but did you call yourAdapter.notifyDataSetChanged() when your list content is changed?

answered Jul 20, 2012 at 22:44

eyal-lezmy

7,1163 gold badges43 silver badges35 bronze badges

3 Comments

Ahmad Over a year ago

This shouldn't be the problem. The problem is I can't change the Array( String[] day_chosen; from an other methode)

Salil Pandit Over a year ago

@user1253575 you keep saying this, so are you getting an error, because I actually agree with eyal-lezmy on this.

eyal-lezmy Over a year ago

Sorry to insist but I'm quiet sure it is that, you should try to add it as it is shown by Salil Pandit below. Another thing, you should try to think about getting your getResources().getStringArray before your onClick handling because this operation could make your interface laggy and cause ANR. I hope this will help.

Collectives™ on Stack Overflow

Android - Use and change Array in whole class

2 Answers 2

Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related