I'd like to save SparseBooleanArray using either SharedPreferences, or anything else, that's more preferred.
I've tried using https://stackoverflow.com/a/16711258/2530836, but everytime the activity is created, bundle is re-initialized, and bundle.getParcelable() returns null. I'm sure there is a workaround for this, but I haven't arrived at it despite a few hours of brainstorming.
Also, if there isn't, could I use something like SharedPreferences?
Here's the code:
public class ContactActivity extends Activity implements AdapterView.OnItemClickListener {
List<String> name1 = new ArrayList<String>();
List<String> phno1 = new ArrayList<String>();
ArrayList<String> exceptions = new ArrayList<String>();
MyAdapter adapter;
Button select;
Bundle bundle = new Bundle();
Context contactActivityContext;
SharedPreferences prefs;
SharedPreferences.Editor editor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.contacts_layout);
getAllContacts(this.getContentResolver());
ListView list= (ListView) findViewById(R.id.lv);
adapter = new MyAdapter();
list.setAdapter(adapter);
list.setOnItemClickListener(this);
list.setItemsCanFocus(false);
list.setTextFilterEnabled(true);
prefs = PreferenceManager.getDefaultSharedPreferences(this);
select = (Button) findViewById(R.id.button1);
select.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
StringBuilder checkedcontacts = new StringBuilder();
for (int i = 0; i < name1.size(); i++)
{
if (adapter.isChecked(i)) {
checkedcontacts.append(name1.get(i).toString());
exceptions.add(name1.get(i).toString());
checkedcontacts.append(", ");
}
}
checkedcontacts.deleteCharAt(checkedcontacts.length() - 2);
checkedcontacts.append("selected");
editor = prefs.edit();
editor.putInt("Status_size", exceptions.size()); /* sKey is an array */
for(int i=0;i<exceptions.size();i++)
{
editor.remove("Status_" + i);
editor.putString("Status_" + i, exceptions.get(i));
}
editor.commit();
Toast.makeText(ContactActivity.this, checkedcontacts, Toast.LENGTH_LONG).show();
}
});
}
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
// TODO Auto-generated method stub
adapter.toggle(arg2);
}
private void setContext(Context contactActivityContext){
this.contactActivityContext = contactActivityContext;
}
protected Context getContext(){
return contactActivityContext;
}
public void getAllContacts(ContentResolver cr) {
Cursor phones = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC" );
while (phones.moveToNext())
{
String name=phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
name1.add(name);
phno1.add(phoneNumber);
}
phones.close();
}
class MyAdapter extends BaseAdapter implements CompoundButton.OnCheckedChangeListener
{ SparseBooleanArray mCheckStates;
ContactActivity mContactActivity = new ContactActivity();
LayoutInflater mInflater;
TextView tv1,tv;
CheckBox cb;
int mPos;
MyAdapter()
{
mCheckStates = new SparseBooleanArray(name1.size());
mCheckStates = (SparseBooleanArray) bundle.getParcelable("myBooleanArray");
mInflater = (LayoutInflater) ContactActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return name1.size();
}
public void setPosition(int p){
mPos = p;
}
public int getPosition(){
return mPos;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View vi=convertView;
if(convertView==null)
vi = mInflater.inflate(R.layout.row, null);
tv= (TextView) vi.findViewById(R.id.textView1);
tv1= (TextView) vi.findViewById(R.id.textView2);
cb = (CheckBox) vi.findViewById(R.id.checkBox1);
tv.setText("Name :"+ name1.get(position));
tv1.setText("Phone No :"+ phno1.get(position));
cb.setTag(position);
cb.setChecked(mCheckStates.get(position, false));
setPosition(position);
cb.setOnCheckedChangeListener(this);
return vi;
}
public boolean isChecked(int position) {
return mCheckStates.get(position, false);
}
public void setChecked(int position, boolean isChecked) {
mCheckStates.put(position, isChecked);
}
public void toggle(int position) {
setChecked(position, !isChecked(position));
}
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
mCheckStates.put((Integer) buttonView.getTag(), isChecked);
}
}
@Override
public void onDestroy(){
bundle.putParcelable("myBooleanArray", new SparseBooleanArrayParcelable(adapter.mCheckStates));
super.onDestroy();
}
}
