How to get OnClick in DatePickerDialog.OnDateSetListener?

Question

I am using the following method to pop up the dialog to pick the date.

private DatePickerDialog.OnDateSetListener mDateSetListener =
        new DatePickerDialog.OnDateSetListener() {

            public void onDateSet(DatePicker view, int year, 
                                  int monthOfYear, int dayOfMonth) {
                dobYear = year;
                dobMonth = monthOfYear;
                dobDay = dayOfMonth;
                if(isEighteenYearOld()){
                   //display the current date
                    dateDisplay();
                } else{
                   Toast.makeText(mContext, "You must be 18 year old", Toast.LENGTH_SHORT).show();
                }  
            } 

        };

I know that onDateSet we can get the selected date. But what i am trying is if the date selected is younger than 18 years i need to alert the user. I have tried above code but it close the dialog and gone back to the activity.

I want to stay in the dialog until user selects the date which is 18 years old.I am not sure how to get the onclick event in the dialog?

Answer 1

Date Picker Dialog you are using is deprecated so I recommend you to don't use that.

You can implement the Date picker in two ways(that I know of)

1. Using DialogFragment
2. Using AlertDialog

Using DialogFragment:

public class MainActivity extends FragmentActivity {
    EditText text;
    Button b;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        b=(Button)findViewById(R.id.button1);
        text=(EditText)findViewById(R.id.editText1);
        b.setOnClickListener(new View.OnClickListener() {
            public void onClick(View arg0) {
                DateDialogFragment datepicker=new DateDialogFragment();
                datepicker.show(getSupportFragmentManager(), "showDate");
            }
        });
    }

    public class DateDialogFragment extends DialogFragment  implements DatePickerDialog.OnDateSetListener{

        public DateDialogFragment()
        {
        }
        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            Calendar cal=Calendar.getInstance();
            int year=cal.get(Calendar.YEAR);
            int month=cal.get(Calendar.MONTH);
            int day=cal.get(Calendar.DAY_OF_MONTH);
            return new DatePickerDialog(getActivity(), this, year, month, day);
        }
        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
            showSetDate(year,monthOfYear,dayOfMonth);
        }

        }

    public void showSetDate(int year,int month,int day) {
    text.setText(year+"/+"+month+"/"+day);
    }
}

Check this sample and implement the same in your Activity.

Using Alert Dialog:

Using the second one is pretty simple

Create layout in your res/layout folder and place DatePicker in the layout

 LayoutInflater  inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            View view = (View) inflater.inflate(R.layout.yourlayout, null);
DatePicker picker=(DatePicker)view.findViewById(R.id.datepicker);

  AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
 builder.setView(view).
        builder.setMessage(R.string.dialog_fire_missiles)
               .setPositiveButton(R.string.fire, new DialogInterface.OnClickListener() {
                   public void onClick(DialogInterface dialog, int id) {
                       // FIRE ZE MISSILES!
                   }
               })
               .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
                   public void onClick(DialogInterface dialog, int id) {
                       // User cancelled the dialog
                   }
               });
        // Create the AlertDialog object and return it
        return builder.create();