This code creates an input-dialog with AlertDialog.Builder where a user can enter text in an EditText field and press on “Ok” and “Cancel”.

AlertDialog.Builder alert = new AlertDialog.Builder(this);

alert.setTitle("MyTitle");
alert.setMessage("MyMessage");

// Set an EditText view to get user input 
final EditText input = new EditText(this);
alert.setView(input);

alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
  String value = input.getText();
  // Do something with value!
  }
});

alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
  public void onClick(DialogInterface dialog, int whichButton) {
    // Canceled.
  }
});

alert.show();

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