Fix #5151: Use DialogUtil for MediaDetailFragment (#5153)

* Update DialogUtil to return the dialog object

* Update first instance of Builder to DialogAlert

* Update DialogUtil to allow null instead of empty string

* Update MediaDetailFragment to use DialogUtil

* Remove unnecessary semicolons

app/src/main/java/fr/free/nrw/commons/media/MediaDetailFragment.java

@@ -13,7 +13,6 @@ import static fr.free.nrw.commons.upload.mediaDetails.UploadMediaDetailFragment.
 import static fr.free.nrw.commons.utils.LangCodeUtils.getLocalizedResources;
 
 import android.Manifest;
-import android.Manifest.permission;
 import android.annotation.SuppressLint;
 import android.app.AlertDialog;
 import android.content.Context;
@@ -84,6 +83,7 @@ import fr.free.nrw.commons.ui.widget.HtmlTextView;
 import fr.free.nrw.commons.upload.categories.UploadCategoriesFragment;
 import fr.free.nrw.commons.upload.depicts.DepictsFragment;
 import fr.free.nrw.commons.upload.UploadMediaDetail;
+import fr.free.nrw.commons.utils.DialogUtil;
 import fr.free.nrw.commons.utils.PermissionUtils;
 import fr.free.nrw.commons.utils.ViewUtilWrapper;
 import io.reactivex.Single;
@@ -1126,15 +1126,15 @@ public class MediaDetailFragment extends CommonsDaggerSupportFragment implements
                 spinner.setAdapter(languageAdapter);
                 spinner.setGravity(17);
 
-                AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
-                builder.setView(spinner);
-                builder.setTitle(R.string.nominate_delete)
-                    .setPositiveButton(R.string.about_translate_proceed,
-                        (dialog, which) -> onDeleteClicked(spinner));
-                builder.setNegativeButton(R.string.about_translate_cancel,
-                    (dialog, which) -> dialog.dismiss());
-                AlertDialog dialog = builder.create();
-                dialog.show();
+                AlertDialog dialog = DialogUtil.showAlertDialog(getActivity(),
+                    getString(R.string.nominate_delete),
+                    null,
+                    getString(R.string.about_translate_proceed),
+                    getString(R.string.about_translate_cancel),
+                    () -> onDeleteClicked(spinner),
+                    () -> {},
+                    spinner,
+                    true);
                 if (isDeleted) {
                     dialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(false);
                 }
@@ -1143,19 +1143,20 @@ public class MediaDetailFragment extends CommonsDaggerSupportFragment implements
             //But how does this  if (delete.getVisibility() == View.VISIBLE) {
             //            enableDeleteButton(true);   makes sense ?
             else {
-                AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());
-                alert.setMessage(
-                    getString(R.string.dialog_box_text_nomination, media.getDisplayTitle()));
                 final EditText input = new EditText(getActivity());
-                alert.setView(input);
                 input.requestFocus();
-                alert.setPositiveButton(R.string.ok, (dialog1, whichButton) -> {
-                    String reason = input.getText().toString();
-                    onDeleteClickeddialogtext(reason);
-                });
-                alert.setNegativeButton(R.string.cancel, (dialog12, whichButton) -> {
-                });
-                AlertDialog d = alert.create();
+                AlertDialog d = DialogUtil.showAlertDialog(getActivity(),
+                    null,
+                    getString(R.string.dialog_box_text_nomination, media.getDisplayTitle()),
+                    getString(R.string.ok),
+                    getString(R.string.cancel),
+                    () -> {
+                        String reason = input.getText().toString();
+                        onDeleteClickeddialogtext(reason);
+                    },
+                    () -> {},
+                    input,
+                    true);
                 input.addTextChangedListener(new TextWatcher() {
                     private void handleText() {
                         final Button okButton = d.getButton(AlertDialog.BUTTON_POSITIVE);
@@ -1179,7 +1180,6 @@ public class MediaDetailFragment extends CommonsDaggerSupportFragment implements
                     public void onTextChanged(CharSequence s, int start, int before, int count) {
                     }
                 });
-                d.show();
                 d.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(false);
             }
         }

app/src/main/java/fr/free/nrw/commons/utils/DialogUtil.kt

@@ -2,7 +2,6 @@ package fr.free.nrw.commons.utils
 
 import android.app.Activity
 import android.app.AlertDialog
-import android.app.Dialog
 import android.view.View
 import fr.free.nrw.commons.R
 import timber.log.Timber
@@ -13,22 +12,23 @@ object DialogUtil {
      * @param activity the activity
      * @param dialog the dialog to be shown
      */
-    private fun showSafely(activity: Activity?, dialog: Dialog?) {
+    private fun showSafely(activity: Activity?, dialog: AlertDialog?):AlertDialog? {
 
         if (activity == null || dialog == null) {
             Timber.d("Show called with null activity / dialog. Ignoring.")
-            return
+            return null
         }
 
         if (activity.isFinishing || activity.isDestroyed) {
             Timber.e("Activity is not running. Could not show dialog. ")
-            return
+            return dialog
         }
         try {
             dialog.show()
         } catch (e: IllegalStateException) {
             Timber.e(e, "Could not show dialog.")
         }
+        return dialog
     }
 
     @JvmStatic
@@ -38,8 +38,8 @@ object DialogUtil {
         message: String?,
         onPositiveBtnClick: Runnable?,
         onNegativeBtnClick: Runnable?
-    ) {
-        createAndShowDialogSafely(
+    ): AlertDialog? {
+        return createAndShowDialogSafely(
             activity = activity,
             title = title,
             message = message,
@@ -58,9 +58,9 @@ object DialogUtil {
         positiveButtonText: String?,
         negativeButtonText: String?,
         onPositiveBtnClick: Runnable?,
-        onNegativeBtnClick: Runnable?
-    ) {
-        createAndShowDialogSafely(
+        onNegativeBtnClick: Runnable?,
+    ): AlertDialog? {
+        return createAndShowDialogSafely(
             activity = activity,
             title = title,
             message = message,
@@ -80,8 +80,8 @@ object DialogUtil {
         onNegativeBtnClick: Runnable?,
         customView: View?,
         cancelable: Boolean
-    ) {
-        createAndShowDialogSafely(
+    ): AlertDialog? {
+        return createAndShowDialogSafely(
             activity = activity,
             title = title,
             message = message,
@@ -105,8 +105,8 @@ object DialogUtil {
         onNegativeBtnClick: Runnable?,
         customView: View?,
         cancelable: Boolean
-    ) {
-        createAndShowDialogSafely(
+    ): AlertDialog? {
+        return createAndShowDialogSafely(
             activity = activity,
             title = title,
             message = message,
@@ -127,8 +127,8 @@ object DialogUtil {
         positiveButtonText: String?,
         onPositiveBtnClick: Runnable?,
         cancelable: Boolean
-    ) {
-        createAndShowDialogSafely(
+    ): AlertDialog? {
+        return createAndShowDialogSafely(
             activity = activity,
             title = title,
             message = message,
@@ -160,19 +160,19 @@ object DialogUtil {
         onNegativeBtnClick: Runnable? = null,
         customView: View? = null,
         cancelable: Boolean = true
-    ) {
+    ): AlertDialog? {
 
         /* If the custom view already has a parent, there is already a dialog showing with the view
          * This happens for on resume - return to avoid creating a second dialog - the first one
          * will still show
          */
         if (customView?.parent != null) {
-            return
+            return null
         }
 
-        showSafely(activity, AlertDialog.Builder(activity).apply {
+        return showSafely(activity, AlertDialog.Builder(activity).apply {
             title?.also{setTitle(title)}
-            title?.also{setMessage(message)}
+            message?.also{setMessage(message)}
             setView(customView)
             setCancelable(cancelable)
             positiveButtonText?.let {