Fix software shortcut in dialog did not update when content change.

Root Cause: Dialog only get updated when clicked the trigger button to show dialog.

Solution: Update the software shortcut content in dialog if needed in onResume() stage.

Bug: 183342594
Test: atest AccessibilityDialogUtilsTest
Change-Id: Ibcd66d6c57f1790f96f234e49f456cbc2c990f64

tests/robotests/src/com/android/settings/accessibility/AccessibilityDialogUtilsTest.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.accessibility;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+
+import androidx.appcompat.app.AlertDialog;
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.R;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+/** Tests for {@link AccessibilityDialogUtils} */
+@RunWith(RobolectricTestRunner.class)
+public class AccessibilityDialogUtilsTest {
+
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+
+    @Before
+    public void setUp() {
+        mContext.setTheme(R.style.Theme_AppCompat);
+    }
+
+    @Test
+    public void updateSoftwareShortcutInDialog_correctDialogType_success() {
+        final AlertDialog dialog = AccessibilityDialogUtils.showEditShortcutDialog(
+                mContext, AccessibilityDialogUtils.DialogType.EDIT_SHORTCUT_GENERIC, "Title",
+                null);
+
+        assertThat(
+                AccessibilityDialogUtils.updateSoftwareShortcutInDialog(mContext, dialog)).isTrue();
+    }
+
+    @Test
+    public void updateSoftwareShortcutInDialog_useNotSupportedDialog_fail() {
+        final AlertDialog dialog = new AlertDialog.Builder(mContext).setTitle("Title").show();
+
+        assertThat(AccessibilityDialogUtils.updateSoftwareShortcutInDialog(mContext,
+                dialog)).isFalse();
+    }
+}