Switch to AppCompatDialogFragment for dialogs that return values due to crashes in...

[PrivacyBrowserAndroid.git] / app / src / main / java / com / stoutner / privacybrowser / EditBookmarkFolder.java

diff --git a/app/src/main/java/com/stoutner/privacybrowser/EditBookmarkFolder.java b/app/src/main/java/com/stoutner/privacybrowser/EditBookmarkFolder.java
index 70fb16e711f08bf84de58945956b83e807ed5001..c04012b9c960504a556c68d9f5bae027ee45df64 100644 (file)
--- a/app/src/main/java/com/stoutner/privacybrowser/EditBookmarkFolder.java
+++ b/app/src/main/java/com/stoutner/privacybrowser/EditBookmarkFolder.java
@@ -19,46 +19,52 @@
 
 package com.stoutner.privacybrowser;
 
-import android.app.Activity;
+import android.annotation.SuppressLint;
 import android.app.Dialog;
-import android.app.DialogFragment;
+import android.content.Context;
 import android.content.DialogInterface;
 import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.os.Bundle;
+import android.support.annotation.NonNull;
 // If we don't use `android.support.v7.app.AlertDialog` instead of `android.app.AlertDialog` then the dialog will be covered by the keyboard.
 import android.support.v7.app.AlertDialog;
+// We have to use `AppCompatDialogFragment` instead of `DialogFragment` or an error is produced on API <=22.
+import android.support.v7.app.AppCompatDialogFragment;
 import android.view.KeyEvent;
 import android.view.View;
 import android.view.WindowManager;
 import android.widget.EditText;
 import android.widget.ImageView;
 
-public class EditBookmarkFolder extends DialogFragment {
+public class EditBookmarkFolder extends AppCompatDialogFragment {
     // The public interface is used to send information back to the parent activity.
     public interface EditBookmarkFolderListener {
-        void onSaveEditBookmarkFolder(DialogFragment dialogFragment);
+        void onSaveEditBookmarkFolder(AppCompatDialogFragment dialogFragment);
     }
 
     // `editFolderListener` is used in `onAttach()` and `onCreateDialog`.
     private EditBookmarkFolderListener editBookmarkFolderListener;
 
-    public void onAttach(Activity parentActivity) {
-        super.onAttach(parentActivity);
+    public void onAttach(Context context) {
+        super.onAttach(context);
 
         // Get a handle for `EditFolderListener` from `parentActivity`.
         try {
-            editBookmarkFolderListener = (EditBookmarkFolderListener) parentActivity;
+            editBookmarkFolderListener = (EditBookmarkFolderListener) context;
         } catch(ClassCastException exception) {
-            throw new ClassCastException(parentActivity.toString() + " must implement EditBookmarkFolderListener.");
+            throw new ClassCastException(context.toString() + " must implement EditBookmarkFolderListener.");
         }
     }
 
+    // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
+    @SuppressLint("InflateParams")
     @Override
+    @NonNull
     public Dialog onCreateDialog(Bundle savedInstanceState) {
         // Get a long array with the the databaseId of the selected bookmark and convert it to an `int`.
-        long[] selectedBookmarkLongArray = BookmarksActivity.bookmarksListView.getCheckedItemIds();
+        long[] selectedBookmarkLongArray = BookmarksActivity.checkedItemIds;
         int selectedBookmarkDatabaseId = (int) selectedBookmarkLongArray[0];
 
         // Get a `Cursor` with the specified bookmark and move it to the first position.
@@ -92,6 +98,9 @@ public class EditBookmarkFolder extends DialogFragment {
         // Create an `AlertDialog` from the `AlertDialog.Builder`.
         final AlertDialog alertDialog = dialogBuilder.create();
 
+        // Remove the warning below that `setSoftInputMode` might produce `java.lang.NullPointerException`.
+        assert alertDialog.getWindow() != null;
+
         // Show the keyboard when the `Dialog` is displayed on the screen.
         alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);