Override modal bottom sheet peekHeight

app/src/main/java/com/philliphsu/clock2/editalarm/BaseTimePickerDialog.java

@@ -53,18 +53,6 @@ public abstract class BaseTimePickerDialog extends BottomSheetDialogFragment {
 //        getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);
         final View view = inflater.inflate(contentLayout(), container, false);
         ButterKnife.bind(this, view);
-
-//        // We're past onCreateDialog() in the lifecycle, so getDialog() will return something.
-//        getDialog().setOnShowListener(new DialogInterface.OnShowListener() {
-//            @Override
-//            public void onShow(DialogInterface dialog) {
-//                BottomSheetBehavior behavior = BottomSheetBehavior.from((View) view.getParent());
-//                // Every time we show, show at our full height.
-//                // TODO: This is the cause of our anchored FAB and number grid not showing!
-//                behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
-//            }
-//        });
-
         return view;
     }
 
@@ -98,12 +86,13 @@ public abstract class BaseTimePickerDialog extends BottomSheetDialogFragment {
 //        return builder.create();
 //    }
 
-      // Code for BottomSheetDialogs only. To uncomment, highlight and CTRL + /
+    // This was an unsatisfactory solution to forcing the bottom sheet to show at its
+    // fully expanded state. Our anchored FAB and GridLayout buttons would not be visible.
 //    @Override
 //    public Dialog onCreateDialog(Bundle savedInstanceState) {
 //        Dialog dialog = super.onCreateDialog(savedInstanceState);
 //        //dialog = new BottomSheetDialog(getActivity(), R.style.AppTheme_AppCompatDialog/*crashes our app!*/);
-//        // We're past onCreate() in the lifecycle, so we can safely retrieve the host activity.
+//        // We're past onCreate() in the lifecycle, so the activity is alive.
 //        View view = LayoutInflater.from(getActivity()).inflate(contentLayout(), null);
 //        /**
 //         * Adds our view to a ViewGroup that has a BottomSheetBehavior attached. The ViewGroup
@@ -114,16 +103,18 @@ public abstract class BaseTimePickerDialog extends BottomSheetDialogFragment {
 //        // Bind this fragment, not the internal dialog! (There is a bind(Dialog) API.)
 //        ButterKnife.bind(this, view);
 //        final BottomSheetBehavior behavior = BottomSheetBehavior.from((View) view.getParent());
+
 //        // When we collapse, collapse all the way. Do not be misled by the "docs" in
 //        // https://android-developers.blogspot.com.au/2016/02/android-support-library-232.html
 //        // when it says:
 //        // "STATE_COLLAPSED: ... the app:behavior_peekHeight attribute (defaults to 0)"
 //        // While it is true by default, BottomSheetDialogs override this default height.
-//        // See http://stackoverflow.com/a/35634293/5055032 for an alternative solution involving
+
-//        // defining a style that overrides the attribute.
+          // This means the sheet is considered "open" even at a height of 0! This is why
-//        // TODO: If the sheet is dragged out of view, then the screen remains darkened until
+//        // when you swipe to hide the sheet, the screen remains darkened--indicative
-//        // a subsequent touch on the screen. Consider doing the alt. soln.?
+//        // of an open dialog.
 //        behavior.setPeekHeight(0);
+
 //        dialog.setOnShowListener(new DialogInterface.OnShowListener() {
 //            @Override
 //            public void onShow(DialogInterface dialog) {

app/src/main/java/com/philliphsu/clock2/editalarm/EditAlarmActivity.java

@@ -323,12 +323,12 @@ public class EditAlarmActivity extends BaseActivity implements
         // last inputted time.
         // TODO: Read preferences to see what time picker style to show.
         BaseTimePickerDialog dialog;
-//        dialog = NumberGridTimePickerDialog.newInstance(
+        dialog = NumberGridTimePickerDialog.newInstance(
-//                this, // OnTimeSetListener
+                this, // OnTimeSetListener
-//                0, // Initial hour of day
+                0, // Initial hour of day
-//                0, // Initial minute
+                0, // Initial minute
-//                DateFormat.is24HourFormat(this));
+                DateFormat.is24HourFormat(this));
-        dialog = NumpadTimePickerDialog.newInstance(this);
+//        dialog = NumpadTimePickerDialog.newInstance(this);
         dialog.show(getSupportFragmentManager(), TAG_TIME_PICKER);
     }
 

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

@@ -24,4 +24,8 @@
     <!-- Bottom sheet specs -->
     <dimen name="bottom_sheet_edge_margin">24dp</dimen>
     <dimen name="bottom_sheet_vertical_space">16dp</dimen>
+    <!-- If the total height of the contents of a bottom sheet does not exceed this limit,
+    then the sheet will show fully expanded; the contents are not stretched to match this height.
+    This is large enough to accommodate most, if not all, of our layouts. -->
+    <dimen name="peek_height_upper_limit">500dp</dimen>
 </resources>

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

@@ -7,7 +7,8 @@
         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
         <item name="colorAccent">@color/colorAccent</item>
         <!-- TODO: This doesn't work for BottomSheetDialogs. Verify this works for other types of dialogs. -->
-        <item name="dialogTheme">@style/AppTheme.AppCompatDialog</item>
+        <item name="dialogTheme">@style/AppCompatDialogTheme</item>
+        <item name="bottomSheetDialogTheme">@style/BottomSheetDialogTheme</item>
     </style>
 
     <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar"/>
@@ -85,8 +86,16 @@
     </style>
 
     <!-- Style for AppCompatDialog from the v7 support library -->
-    <style name="AppTheme.AppCompatDialog" parent="Theme.AppCompat.Light.Dialog">
+    <style name="AppCompatDialogTheme" parent="Theme.AppCompat.Light.Dialog">
         <item name="colorAccent">?android:attr/colorAccent</item>
     </style>
+    
+    <style name="BottomSheetDialogTheme" parent="Theme.Design.Light.BottomSheetDialog">
+        <item name="bottomSheetStyle">@style/ModalStyle</item>
+    </style>
+
+    <style name="ModalStyle" parent="Widget.Design.BottomSheet.Modal">
+        <item name="behavior_peekHeight">@dimen/peek_height_upper_limit</item>
+    </style>
 
 </resources>