add keyaboard popup

app/src/main/java/ru/vtosters/lite/ui/fragments/ThemesFragment.java

@@ -1,8 +1,11 @@
 package ru.vtosters.lite.ui.fragments;
 
+import android.content.DialogInterface;
 import android.content.Intent;
+import android.graphics.Color;
 import android.os.Build;
 import android.os.Bundle;
+import android.view.WindowManager;
 import androidx.preference.PreferenceCategory;
 import com.vk.core.dialogs.alert.VkAlertDialog;
 import com.vk.core.fragments.FragmentImpl;
@@ -130,12 +133,22 @@ public class ThemesFragment extends MaterialPreferenceToolbarFragment {
     void showColorPicker() {
         final var colorPickerView = new ColorPickerView(requireContext());
         colorPickerView.setColor(ThemesUtils.getAccentColor());
-        new VkAlertDialog.Builder(requireContext())
-                .setTitle(AndroidUtils.getString("select_color"))
-                .setNegativeButton(R.string.cancel, null)
-                .setPositiveButton(R.string.select, (dialog, which) -> setAccentColor(colorPickerView.getColor()))
-                .setView(colorPickerView)
-                .show();
+
+        var alertDialog = new VkAlertDialog.Builder(requireContext()).create();
+        alertDialog.setTitle(AndroidUtils.getString("select_color"));
+        alertDialog.setButton(
+                DialogInterface.BUTTON_NEGATIVE,
+                requireContext().getString(R.string.cancel),
+                (DialogInterface.OnClickListener) null
+        );
+        alertDialog.setButton(
+                DialogInterface.BUTTON_POSITIVE,
+                requireContext().getString(R.string.select),
+                (dialog, which) -> setAccentColor(colorPickerView.getColor())
+        );
+        alertDialog.setView(colorPickerView);
+        alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING);
+        alertDialog.show();
     }
 
     void showPalettesDialog() {

app/src/main/java/ru/vtosters/lite/ui/views/rarepebble/HexEdit.java

@@ -9,8 +9,14 @@ import android.widget.EditText;
 
 class HexEdit {
 
-    private static InputFilter[] withoutAlphaDigits = {new ColorPasteLengthFilter()};
-    private static InputFilter[] withAlphaDigits = {new InputFilter.LengthFilter(8)};
+    private static InputFilter[] withoutAlphaDigits = {
+            new ColorPasteLengthFilter(),
+            new HexFilter()
+    };
+    private static InputFilter[] withAlphaDigits = {
+            new InputFilter.LengthFilter(8),
+            new HexFilter()
+    };
 
     public static void setUpListeners(final EditText hexEdit, final ObservableColor observableColor) {
 
@@ -93,4 +99,19 @@ class HexEdit {
         }
     }
 
+    private static class HexFilter implements InputFilter {
+
+        @Override
+        public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
+            var state = true;
+            for (int i = start; i < end; i++) {
+                char ch = source.charAt(i);
+                if (ch < '0' || ch> '9' && ch < 'A' || ch > 'F' && ch < 'a' || ch > 'f') {
+                    state = false;
+                    break;
+                }
+            }
+            return state ? source.subSequence(start, end) : "";
+        }
+    }
 }