use an alertdialog instead of a fragment

app/src/main/java/com/simplemobiletools/calendar/Constants.java

@@ -1,7 +1,6 @@
 package com.simplemobiletools.calendar;
 
 public class Constants {
-    public static final String DATE = "date";
     public static final float LOW_ALPHA = .2f;
     public static final float HIGH_ALPHA = .9f;
 

app/src/main/java/com/simplemobiletools/calendar/MainActivity.java

@@ -1,13 +1,17 @@
 package com.simplemobiletools.calendar;
 
+import android.content.DialogInterface;
 import android.content.res.Resources;
 import android.graphics.Color;
 import android.graphics.PorterDuff;
 import android.os.Bundle;
+import android.support.v7.app.AlertDialog;
 import android.support.v7.app.AppCompatActivity;
 import android.view.View;
+import android.widget.DatePicker;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
+import android.widget.LinearLayout;
 import android.widget.TextView;
 
 import org.joda.time.DateTime;
@@ -19,7 +23,7 @@ import butterknife.BindDimen;
 import butterknife.ButterKnife;
 import butterknife.OnClick;
 
-public class MainActivity extends AppCompatActivity implements MyDatePickerDialog.DatePickedListener, Calendar {
+public class MainActivity extends AppCompatActivity implements Calendar {
     @Bind(R.id.left_arrow) ImageView leftArrow;
     @Bind(R.id.right_arrow) ImageView rightArrow;
     @Bind(R.id.table_month) TextView monthTV;
@@ -93,16 +97,30 @@ public class MainActivity extends AppCompatActivity implements MyDatePickerDialo
 
     @OnClick(R.id.table_month)
     public void pickMonth() {
-        final MyDatePickerDialog dialog = new MyDatePickerDialog();
+        final AlertDialog.Builder alertDialog = new AlertDialog.Builder(this, R.style.MyAlertDialog);
-        final Bundle bundle = new Bundle();
+        final View view = getLayoutInflater().inflate(R.layout.date_picker, null);
-        bundle.putString(Constants.DATE, calendar.getTargetDate().toString());
+        final DatePicker datePicker = (DatePicker) view.findViewById(R.id.date_picker);
-        dialog.setArguments(bundle);
+        hideDayPicker(datePicker);
-        dialog.show(getSupportFragmentManager(), "datepicker");
+
+        final DateTime dateTime = new DateTime(calendar.getTargetDate().toString());
+        datePicker.init(dateTime.getYear(), dateTime.getMonthOfYear() - 1, 1, null);
+
+        alertDialog.setView(view);
+        alertDialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {
+            public void onClick(DialogInterface dialog, int id) {
+                final int month = datePicker.getMonth() + 1;
+                final int year = datePicker.getYear();
+                calendar.updateCalendar(new DateTime().withMonthOfYear(month).withYear(year));
+            }
+        });
+
+        alertDialog.show();
     }
 
-    @Override
+    private void hideDayPicker(DatePicker datePicker) {
-    public void onDatePicked(DateTime dateTime) {
+        final LinearLayout ll = (LinearLayout) datePicker.getChildAt(0);
-        calendar.updateCalendar(dateTime);
+        final LinearLayout ll2 = (LinearLayout) ll.getChildAt(0);
+        ll2.getChildAt(0).setVisibility(View.GONE);
     }
 
     @Override

app/src/main/java/com/simplemobiletools/calendar/MyDatePickerDialog.java

@@ -1,52 +0,0 @@
-package com.simplemobiletools.calendar;
-
-import android.app.Dialog;
-import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.v4.app.DialogFragment;
-import android.support.v7.app.AlertDialog;
-import android.view.View;
-import android.widget.DatePicker;
-import android.widget.LinearLayout;
-
-import org.joda.time.DateTime;
-
-public class MyDatePickerDialog extends DialogFragment {
-    @NonNull
-    @Override
-    public Dialog onCreateDialog(Bundle savedInstanceState) {
-        final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
-        final View view = getActivity().getLayoutInflater().inflate(R.layout.date_picker, null);
-        final DatePicker datePicker = (DatePicker) view.findViewById(R.id.date_picker);
-        hideDayPicker(datePicker);
-
-        final Bundle bundle = getArguments();
-        if (bundle != null && bundle.containsKey(Constants.DATE)) {
-            final DateTime dateTime = new DateTime(bundle.getString(Constants.DATE));
-            datePicker.init(dateTime.getYear(), dateTime.getMonthOfYear() - 1, 1, null);
-        }
-
-        builder.setView(view);
-        view.findViewById(R.id.date_picker_ok).setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                final DatePickedListener listener = (DatePickedListener) getActivity();
-                final int month = datePicker.getMonth() + 1;
-                final int year = datePicker.getYear();
-                listener.onDatePicked(new DateTime().withMonthOfYear(month).withYear(year));
-                dismiss();
-            }
-        });
-        return builder.create();
-    }
-
-    private void hideDayPicker(DatePicker datePicker) {
-        final LinearLayout ll = (LinearLayout) datePicker.getChildAt(0);
-        final LinearLayout ll2 = (LinearLayout) ll.getChildAt(0);
-        ll2.getChildAt(0).setVisibility(View.GONE);
-    }
-
-    public interface DatePickedListener {
-        void onDatePicked(DateTime dateTime);
-    }
-}

app/src/main/res/layout/date_picker.xml

@@ -1,23 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:gravity="center_horizontal">
-
 <DatePicker
     android:id="@+id/date_picker"
+    xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:calendarViewShown="false"
     android:datePickerMode="spinner"/>
-
-    <Button
-        android:id="@+id/date_picker_ok"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_alignLeft="@id/date_picker"
-        android:layout_alignRight="@id/date_picker"
-        android:layout_below="@id/date_picker"
-        android:text="OK"/>
-
-</RelativeLayout>

app/src/main/res/values/styles.xml

@@ -28,4 +28,6 @@
         <item name="android:background">@drawable/button</item>
     </style>
 
+    <style name="MyAlertDialog" parent="Base.Theme.AppCompat.Light.Dialog.Alert"/>
+
 </resources>