ListView.setAdapter (new String [] {}) - and no more, WITHOUT R.layout.simple_list_item_1

Question

I create my AlertDialog on Android with the content I need:

 new AlertDialog.Builder(this) .setTitle(...) .setView(R.layout.layout_settings) // вот моя Layout .setPositiveButton("ok", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface i1, int i3) { ... return; } }) .setNegativeButton("cancel", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface i1, int i3) { ... return; } }) .create() .show();

In this my Layout R.layout.layout_settings there is a ListView :

 <ListView android:id="@+id/myListView" android:layout_width="match_parent" android:layout_height="wrap_content" />

How to add a String[] array with values to it? Here without all these R.layout.simple_list_item_1 as written here . Does not work! An exception is thrown:

java.lang.NullPointerException:
Attempt to invoke virtual method 'void android.widget.ListView.setAdapter (android.widget.ListAdapter)' on a null object reference

I need to simply and elementarily point my ListView an ordinary String[] array. With these I will not express "simple_list_item .." easier to shoot.

I am not going to create any additional XML files (for example, Layout) for some unimportant ListView . Need another option.

android.R.layout.simple_list_item_1 does not require you to create any XML, it takes a standard element.
Exception in the line myListView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, new String[]{...}); Sorry, forgot to specify it in the question.
Well, most likely, therefore, NullPointer, because you need to look for a ListView on the dialog, i.e.
Do you get a listView that is in the dialog before adding the dialog?
in debug mode, stop at setAdapter line and see what myListView

Accepted Answer · 2016-09-02T14:08:47

 AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this); // ...Irrelevant code for customizing the buttons and title LayoutInflater inflater = this.getLayoutInflater(); View dialogView = inflater.inflate(R.layout.abc, null); dialogBuilder.setView(dialogView); dialogBuilder.setPositiveButton("ok", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { } }); dialogBuilder.setNegativeButton( "cancel", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { } }); ListView myListView = (ListView) dialogView.findViewById(R.id.lv); //добавляешь адаптер myListView.setAdapter(adapter); AlertDialog alertDialog = dialogBuilder.create(); alertDialog.show();

ListView.setAdapter (new String [] {}) - and no more, WITHOUT R.layout.simple_list_item_1

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