Persist AlertDialog options - java

I'm creating an AlertDialog. Here's the snippet of code that I'm using:
final CharSequence[] items = {"Red", "Green", "Blue"};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Pick a color");
builder.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
}
});
AlertDialog alert = builder.create();
alert.show();
This works fine but I haven't been able to figure out how save the selection option somewhere so that the next time the alert dialog is opened, the previously selected option is shown. I don't need this value to persist across application restarts, only as long as the application is in the background and not entirely discarded.
Being new to Android development, I have found this pretty difficult to accomplish.


Use the code below :
private static final String SELECTED_ITEM = "SelectedItem";
private SharedPreferences sharedPreference;
private Editor sharedPrefEditor;
private void showAlert() {
final CharSequence[] items = {"Red", "Green", "Blue"};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Pick a color");
builder.setSingleChoiceItems(items, getSelectedItem(), new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
saveSelectedItem(item);
Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
}
});
AlertDialog alert = builder.create();
alert.show();
}
private int getSelectedItem() {
if (sharedPreference == null) {
sharedPreference = PreferenceManager
.getDefaultSharedPreferences(this);
}
return sharedPreference.getInt(SELECTED_ITEM, -1);
}
private void saveSelectedItem(int item) {
if (sharedPreference == null) {
sharedPreference = PreferenceManager
.getDefaultSharedPreferences(this);
}
sharedPrefEditor = sharedPreference.edit();
sharedPrefEditor.putInt(SELECTED_ITEM, item);
sharedPrefEditor.commit();
}
For the first time, nothing will be selected. From second time onwards the item which is previously selected will be selected by default.

Related

AlertDialog never displays even with sharedPreferences

I want to display alertDialog only once. The first time user clicks on the play button, alertDialog should appear. User can stop the game. If he wishes to play again,the alertDialog should not appear again.
I've tried using sharedPreferences, but alertDialog is never displayed.
public boolean added = false;
private void startRoute(MenuItem item) {
SharedPreferences prefs = getContext().getSharedPreferences("myPref",Context.MODE_PRIVATE);
boolean added = prefs.getBoolean("added",false);
if(!added)
{
addRouteToCal();
}
refreshProgress();
}
private void addRouteToCal() {
final EditText taskEditText = new EditText(getContext());
new AlertDialog.Builder(getContext())
.setTitle(getString(R.string.current_add_to_favorites))
.setMessage(getString(R.string.current_name_favorites))
.setView(taskEditText)
.setPositiveButton(getString(R.string.ok), new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
String name=String.valueOf(taskEditText.getText());
saveRouteDone(name);
SharedPreferences.Editor prefs = getContext().getSharedPreferences("myPref",Context.MODE_PRIVATE).edit();
prefs.putBoolean("added",true);
prefs.commit();
}
})
.setNegativeButton(getString(R.string.cancel), (dialog, which) -> {
})
.show();
;
Any idea of what I did wrong ?

Create and show Toasts/Snackbars from within AlertDialog

I have a recyclerlistview that is populated using inputs gathered from an AlertDialog, which is spawned from a floating action button. When the positive button in the AlertDialog is pressed and all inputs are formatted correctly the SQLite db gets updated and after that the snackbar is made and shown from within the same listener.
If the input is malformatted, then toast is displayed, but also the dialog closes which i do not want
If the input is correct the dialog closes and the data gets added to the list, but the SnackBar is not showing
This is the onClickListener in my MainActivity:
#Override
public void onClick(View view)
{
switch ( view.getId() )
{
case R.id.add_item_btn:
View addDialogView = getLayoutInflater().inflate(R.layout.add_dialog, null);
final EditText addItemNameTxt = addDialogView.findViewById(R.id.add_item_name_txt);
final EditText addItemCountTxt = addDialogView.findViewById(R.id.add_item_count_txt);
// something unimportant left out
new AlertDialog.Builder(this)
.setView(addDialogView)
.setCancelable(true)
.setPositiveButton("Add", new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int i)
{
if ( addItemNameTxt.getText().length() == 0 )
{
Toast.makeText(MainActivity.this, "Text cannot be empty", Toast.LENGTH_SHORT).show();
return;
}
String itemName = addItemNameTxt.getText().toString();
String itemCount = addItemCountTxt.getText().toString();
dbHelper.insertTask(itemName, Integer.parseInt(itemCount));
taskAdapter.swapCursor(dbHelper.getTasks());
dialog.dismiss();
Snackbar.make(getLayoutInflater().inflate(R.layout.activity_main, null).findViewById(R.id.rootLayout), String.format("Added \"%s (%s)\" to list", itemName, itemCount), Snackbar.LENGTH_LONG);
}
})
.create().show();
break;
}
}

It works (= not closing for toasting + snacking upon successful exit) when a button is put into the custom layout and that one is used instead of AlertDialog.PositiveButton.
final AlertDialog dialog = new AlertDialog.Builder(this)
.setView(addDialogView)
.create();
addDialogView.findViewById(R.id.add_confirm).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view2) {
if ( addItemNameTxt.getText().length() == 0 )
{
Toast.makeText(MainActivity.this, "Text cannot be empty", Toast.LENGTH_SHORT).show();
return;
}
String itemName = addItemNameTxt.getText().toString();
String itemCount = addItemCountTxt.getText().toString();
dbHelper.insertTask(itemName, Integer.parseInt(itemCount));
taskAdapter.swapCursor(dbHelper.getTasks());
Snackbar.make(view, String.format("Added \"%s (%s)\" to list", itemName, itemCount), Snackbar.LENGTH_LONG).show();
dialog.dismiss();
}
});
dialog.show();

I want to add same value in shared preference each time click button

My question is i have a list of food item. when user press add button to add the dish i am saving this dish name in shared preference. but when i press the same dish twice in shared preference should show 2 dishes with the same name. but each time i press same dish its showing me only one dish. this is my code below.
public class Cafetaria extends AppCompatActivity {
String title;
ListView listView;
View customNav;
public String value,secdish,thrDish,frthDish;
public String Drink,Drink2,Drink3,Drink4;
String selectedDrink;
Dialog ViewDialog;
TextView tv_foodtype,tv_drink;
private Button button;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cafetaria);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
title = getIntent().getStringExtra("option");
getSupportActionBar().setTitle(title);
ActionBar actionBar = getSupportActionBar();
ActionBar.LayoutParams lp = new ActionBar.LayoutParams(ActionBar.LayoutParams.WRAP_CONTENT, ActionBar.LayoutParams.WRAP_CONTENT, Gravity.RIGHT | Gravity.CENTER_VERTICAL);
customNav = LayoutInflater.from(this).inflate(R.layout.food_actionbar_layout, null); // layout which contains your button.
actionBar.setCustomView(customNav, lp);
actionBar.setDisplayShowCustomEnabled(true);
customNav.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
ViewDialog = new Dialog(Cafetaria.this);
ViewDialog.setContentView(R.layout.activity_order_detail);
ViewDialog.setTitle("Your Order Details");
tv_foodtype = (TextView)ViewDialog.findViewById(R.id.nameuser);
tv_drink = (TextView)ViewDialog.findViewById(R.id.passnum);
button = (Button)ViewDialog.findViewById(R.id.okBtn);
ViewDialog.show();
final SharedPreferences mSharedPreference= PreferenceManager.getDefaultSharedPreferences(getBaseContext());
value=(mSharedPreference.getString("firstDish", ""));
Drink=(mSharedPreference.getString("selectedDrinks", ""));
Drink2=(mSharedPreference.getString("selectedDrinks1", ""));
Drink3=(mSharedPreference.getString("selectedDrinks2", ""));
Drink4=(mSharedPreference.getString("selectedDrinks3", ""));
secdish=(mSharedPreference.getString("secdish", ""));
thrDish=(mSharedPreference.getString("thirdDish", ""));
frthDish=(mSharedPreference.getString("fourtDish", ""));
tv_foodtype.setText("Main Dishes"+ " \n"+value + " \n" + secdish +"\n"+thrDish+"\n"+frthDish);
tv_drink.setText("Drink"+" \n"+Drink + " \n" + Drink2 +"\n"+Drink3+"\n"+Drink4);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
ViewDialog.dismiss();
}
});
}
});
listView =(ListView)findViewById(R.id.listView);
Drawable chic = this.getResources().getDrawable(R.drawable.chicktikka);
final Drawable plus = this.getResources().getDrawable(R.drawable.plus);
Drawable minus = this.getResources().getDrawable(R.drawable.minus);
ArrayList<FoodItemData> listofItem = new ArrayList<>();
FoodListViewAdapter listViewAdapter= new FoodListViewAdapter(this,R.layout.item_layout,listofItem);
listView.setAdapter(listViewAdapter);
listofItem.add(new FoodItemData("Chicken Tikka","spicey chicken tikka with mixures of indian spices",chic,plus,minus));
listofItem.add(new FoodItemData("Onion Bhaji","spicey chicken tikka with mixures of indian spices",chic,plus,minus));
listofItem.add(new FoodItemData("Chicken Pizza","spicey chicken tikka with mixures of indian spices",chic,plus,minus));
listofItem.add(new FoodItemData("Chicken Masala","spicey chicken tikka with mixures of indian spices",chic,plus,minus));
}
#RequiresApi(api = Build.VERSION_CODES.HONEYCOMB_MR1)
public void plusClick(View v)
{
if (listView.getPositionForView(v)==0) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(Cafetaria.this);
final SharedPreferences.Editor editor = prefs.edit();
editor.putString("firstDish","Chicken Tikka");
AlertDialog.Builder adb = new AlertDialog.Builder(this);
adb.setTitle("Please Choose your drink");
final String[] drinks = new String[]{"Coke", "Fanta", "Sprite"};
final ArrayList<Integer> selectedItems = new ArrayList<Integer>();
final boolean[] preCheckedItems = new boolean[]{false, false, false};
adb.setMultiChoiceItems(drinks, preCheckedItems, new DialogInterface.OnMultiChoiceClickListener() {
#Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
if (isChecked) {
selectedItems.add(which);
} else if (selectedItems.contains(which)) {
selectedItems.remove(which);
}
}
});
//Define the AlertDialog positive/ok/yes button
adb.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
for (int i = 0; i < selectedItems.size(); i++) {
int IndexOfColorsArray = selectedItems.get(i);
selectedDrink = Arrays.asList(drinks).get(IndexOfColorsArray);
editor.putString("selectedDrinks",selectedDrink);
editor.commit();
}
Toast.makeText(Cafetaria.this, "Your item has been added", Toast.LENGTH_SHORT).show();
}
});
//Define the Neutral/Cancel button in AlertDialog
adb.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
adb.show();
}
else if (listView.getPositionForView(v) == 1) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(Cafetaria.this);
final SharedPreferences.Editor editor = prefs.edit();
editor.putString("secdish","Onion Bhaji");
AlertDialog.Builder adb = new AlertDialog.Builder(this);
adb.setTitle("Choose your Drink");
final String[] drinks = new String[]{"Coke", "Fanta", "Sprite"};
final ArrayList<Integer> selectedItems = new ArrayList<Integer>();
final boolean[] preCheckedItems = new boolean[]{false, false, false};
adb.setMultiChoiceItems(drinks, preCheckedItems, new DialogInterface.OnMultiChoiceClickListener() {
#Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
if (isChecked) {
selectedItems.add(which);
} else if (selectedItems.contains(which)) {
selectedItems.remove(which);
}
}
});
//Define the AlertDialog positive/ok/yes button
adb.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
for (int i = 0; i < selectedItems.size(); i++) {
int IndexOfColorsArray = selectedItems.get(i);
selectedDrink = Arrays.asList(drinks).get(IndexOfColorsArray);
editor.putString("selectedDrinks1",selectedDrink);
editor.commit();
}
Toast.makeText(Cafetaria.this, "Your item has been added", Toast.LENGTH_SHORT).show();
}
});
adb.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//When user click the neutral/cancel button from alert dialog
}
});
adb.show();
}
else if (listView.getPositionForView(v) == 2) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(Cafetaria.this);
final SharedPreferences.Editor editor = prefs.edit();
editor.putString("thirdDish","Chicken Pizza");
AlertDialog.Builder adb = new AlertDialog.Builder(this);
adb.setTitle("Choose your Drink");
final String[] drinks = new String[]{"Coke", "Fanta", "Sprite"};
final ArrayList<Integer> selectedItems = new ArrayList<Integer>();
final boolean[] preCheckedItems = new boolean[]{false, false, false};
adb.setMultiChoiceItems(drinks, preCheckedItems, new DialogInterface.OnMultiChoiceClickListener() {
#Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
if (isChecked) {
selectedItems.add(which);
} else if (selectedItems.contains(which)) {
selectedItems.remove(which);
}
}
});
adb.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
for (int i = 0; i < selectedItems.size(); i++) {
int IndexOfColorsArray = selectedItems.get(i);
selectedDrink = Arrays.asList(drinks).get(IndexOfColorsArray);
editor.putString("selectedDrinks2",selectedDrink);
editor.commit();
}
Toast.makeText(Cafetaria.this, "Your item has beed added", Toast.LENGTH_SHORT).show();
}
});
adb.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//When user click the neutral/cancel button from alert dialog
}
});
adb.show();
}
else if (listView.getPositionForView(v) == 3) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(Cafetaria.this);
final SharedPreferences.Editor editor = prefs.edit();
editor.putString("fourtDish","Chicken Masala");
AlertDialog.Builder adb = new AlertDialog.Builder(this);
adb.setTitle("Choose your Drink");
final String[] drinks = new String[]{"Coke", "Fanta", "Sprite"};
final ArrayList<Integer> selectedItems = new ArrayList<Integer>();
final boolean[] preCheckedItems = new boolean[]{false, false, false};
adb.setMultiChoiceItems(drinks, preCheckedItems, new DialogInterface.OnMultiChoiceClickListener() {
#Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
if (isChecked) {
selectedItems.add(which);
} else if (selectedItems.contains(which)) {
//selectedItems.remove(which);
selectedItems.add(which);
}
}
});
adb.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
for (int i = 0; i < selectedItems.size(); i++) {
int IndexOfColorsArray = selectedItems.get(i);
selectedDrink = Arrays.asList(drinks).get(IndexOfColorsArray);
editor.putString("selectedDrinks3",selectedDrink);
editor.commit();
}
Toast.makeText(Cafetaria.this, "Your item has beed added", Toast.LENGTH_SHORT).show();
}
});
adb.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//When user click the neutral/cancel button from alert dialog
}
});
adb.show();
}
}
public void minusClick(View v)
{
if (listView.getPositionForView(v)==0) {
final SharedPreferences mSharedPreference= PreferenceManager.getDefaultSharedPreferences(getBaseContext());
mSharedPreference.edit().remove("firstDish").commit();
mSharedPreference.edit().remove("selectedDrinks").commit();
Toast.makeText(Cafetaria.this, "Your Item has been removed", Toast.LENGTH_SHORT).show();
}
else if (listView.getPositionForView(v)==1)
{
final SharedPreferences mSharedPreference= PreferenceManager.getDefaultSharedPreferences(getBaseContext());
mSharedPreference.edit().remove("secDish").commit();
mSharedPreference.edit().remove("selectedDrinks1").commit();
Toast.makeText(Cafetaria.this, "Your Item has been removed", Toast.LENGTH_SHORT).show();
}
else if (listView.getPositionForView(v)==2)
{
final SharedPreferences mSharedPreference= PreferenceManager.getDefaultSharedPreferences(getBaseContext());
mSharedPreference.edit().remove("thirdDish").commit();
mSharedPreference.edit().remove("selectedDrinks2").commit();
Toast.makeText(Cafetaria.this, "Your Item has been removed", Toast.LENGTH_SHORT).show();
}
else if (listView.getPositionForView(v)==3)
{
final SharedPreferences mSharedPreference= PreferenceManager.getDefaultSharedPreferences(getBaseContext());
mSharedPreference.edit().remove("fourtDish").commit();
mSharedPreference.edit().remove("selectedDrinks3").commit();
Toast.makeText(Cafetaria.this, "Your Item has been removed", Toast.LENGTH_SHORT).show();
}
}
#Override
protected void onResume() {
super.onResume();
if (getSupportActionBar() != null){
getSupportActionBar().setTitle(title);
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
this.finish();
return true;
}
return false;
}
#Override
protected void onRestart() {
super.onRestart();
final SharedPreferences mSharedPreference= PreferenceManager.getDefaultSharedPreferences(getBaseContext());
mSharedPreference.edit().remove("firstDish").commit();
mSharedPreference.edit().remove("selectedDrinks").commit();
mSharedPreference.edit().remove("selectedDrinks1").commit();
mSharedPreference.edit().remove("selectedDrinks2").commit();
mSharedPreference.edit().remove("selectedDrinks3").commit();
mSharedPreference.edit().remove("secdish").commit();
mSharedPreference.edit().remove("thirdDish").commit();
mSharedPreference.edit().remove("fourtDish").commit();
}
}`
This is the result I am getting. I press this dish twice and its shown only once. It should be shown twice the same dish name. Please Guide.

The code is really long to follow on here. But speaking generally, do you save each dish with different key-value pair? Maybe think about such solution. OR you could store the dishes in an array, which can be stored in Shared prefs, and once you want to see your dishes, just read out the Array List and display the items inside it.
You store the String into an Array, whenever you want to do it in your code. It's just like mArrayList.add("String"); and then you can update yuor SharedPrefs the same you already do, just check the URL on how to store ArrayList to SharedPrefs. Would be a cleaner solution in my view.
Here you can see how to store ArrayList in SharedPreferences:
Save ArrayList to SharedPreferences
And the once you want to display the items from ArrayList, you pull ArrayList from SharedPrefs and display them in AlertDialog ListView.
And here it is explained how to display Array Items in AlertDialog:
How can I display a list view in an Android Alert Dialog?

Remember what was selected in single choice AlertDialog

I have an AlertDialog which displays an array into a single selected choice:
protected boolean blFrom, blTo;
protected void showSelectToDialog() {
boolean[] checkedDate = new boolean[toDate.length];
int count = toDate.length;
DialogInterface.OnClickListener setD2 = new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//TODO Auto-generated method stub
onChangeSelectedTo(which);
}
};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Select To Year");
builder.setSingleChoiceItems(toDate, count, setD2);
builder.setCancelable(true);
builder.setPositiveButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.dismiss();
}
});
dialog2 = builder.create();
dialog2.show();
}
protected void onChangeSelectedTo(int j) {
bTo.setText(toDate[j]);
sTo = ((AlertDialog)dialog2).getListView().getCheckedItemPosition();
blTo = true;
displayToast(String.valueOf(sTo));
to = j;
dialog.dismiss();
}
What I want to do is the first time it loads it should display the default. Once I select a choice and the dialog closes and I bring up the same dialog again it should show the previously selected choice I made and scroll to it.
How do I accomplish it?
As of right now, I can get the selected position but what next?

You can store the chosen value in a variable of your Activity or using SharedPreferences

Code breaks at AlertDialog creation. I think I have Context wrong...?

i can't seem to figure out why my app/code is crashing in this section. Any help would be appreciated. I think the problem lies on the creation of an AlertDialog in the else if statement.
Basically, this method is called on first launch of the application and asks the user to choose between two options: OCPS and Other. When OCPS is chosen, a SharedPreference is set. When other is selected, an AlertDialog with text box should pop up, allowing the user to input their own local URL, which is then saved to the SharedPreference.
Full code is available here: https://github.com/danielblakes/progressbook/
code follows:
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
boolean firstrun = getSharedPreferences(
"com.danielblakes.progressbook", MODE_PRIVATE).getBoolean(
"firstrun", true);
if (firstrun) {
new AlertDialog.Builder(this).setTitle("First Run").show();
pickDistrict(this);
getSharedPreferences("com.danielblakes.progressbook", MODE_PRIVATE)
.edit().putBoolean("firstrun", false).commit();
}
else {
String saved_district = getSharedPreferences(
"com.danielblakes.progressbook", MODE_PRIVATE).getString(
"district", null);
startupWebView(saved_district);
}
}
public Dialog pickDistrict(final Context context) {
AlertDialog.Builder districtalert = new AlertDialog.Builder(context);
districtalert
.setTitle(R.string.choose_district)
.setItems(R.array.districts,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int i) {
if (i == 0) {
String district_site = "https://parentaccess.ocps.net/General/District.aspx?From=Global";
startupWebView(district_site);
getSharedPreferences(
"com.danielblakes.progressbook",
MODE_PRIVATE)
.edit()
.putString("district",
district_site).commit();
} else if (i == 1) {
AlertDialog.Builder customdistrict = new AlertDialog.Builder(context);
customdistrict
.setTitle(
R.string.custom_district_title)
.setMessage(
R.string.custom_district_message);
final EditText input = new EditText(
getParent());
customdistrict.setView(input);
customdistrict
.setPositiveButton(
"Ok",
new DialogInterface.OnClickListener() {
public void onClick(
DialogInterface dialog,
int which) {
String custom_url = input
.getText()
.toString();
getSharedPreferences(
"com.danielblakes.progressbook",
MODE_PRIVATE)
.edit()
.putString(
"district",
custom_url)
.commit();
}
});
customdistrict
.setNegativeButton(
"Cancel",
new DialogInterface.OnClickListener() {
public void onClick(
DialogInterface dialog,
int which) {
return;
}
}).show();
}
}
}).show();
return districtalert.create();
}
}

Change
AlertDialog.Builder customdistrict = new AlertDialog.Builder(this);
to
AlertDialog.Builder customdistrict = new AlertDialog.Builder(context);
also,
final EditText input = new EditText(getParent());
needed to be changed to
final EditText input = new EditText(context);

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