X-Git-Url: https://gitweb.stoutner.com/?a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2FCreateHomeScreenShortcut.java;h=6159f8da141f8cc5a3257e52a3c4c2ba6e82ac55;hb=7d632afdd10cad5b4d62fce37707eaceebe260cb;hp=1eb74fb6dcdefe36ae21eea7f158e91fdb5b9a59;hpb=a45494e763affaa93f42927ee58f45803e1ee9db;p=PrivacyBrowserAndroid.git

diff --git a/app/src/main/java/com/stoutner/privacybrowser/CreateHomeScreenShortcut.java b/app/src/main/java/com/stoutner/privacybrowser/CreateHomeScreenShortcut.java
index 1eb74fb6..6159f8da 100644
--- a/app/src/main/java/com/stoutner/privacybrowser/CreateHomeScreenShortcut.java
+++ b/app/src/main/java/com/stoutner/privacybrowser/CreateHomeScreenShortcut.java
@@ -19,41 +19,47 @@
 
 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.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 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.LayoutInflater;
 import android.view.View;
 import android.view.WindowManager;
 import android.widget.EditText;
 
-public class CreateHomeScreenShortcut extends DialogFragment {
+public class CreateHomeScreenShortcut extends AppCompatDialogFragment {
     // The public interface is used to send information back to the parent activity.
     public interface CreateHomeScreenSchortcutListener {
-        void onCreateHomeScreenShortcut(DialogFragment dialogFragment);
+        void onCreateHomeScreenShortcut(AppCompatDialogFragment dialogFragment);
     }
 
     //`createHomeScreenShortcutListener` is used in `onAttach()` and `onCreateDialog()`.
     private CreateHomeScreenSchortcutListener createHomeScreenShortcutListener;
 
     // Check to make sure that the parent activity implements the listener.
-    public void onAttach(Activity parentActivity) {
-        super.onAttach(parentActivity);
+    public void onAttach(Context context) {
+        super.onAttach(context);
         try {
-            createHomeScreenShortcutListener = (CreateHomeScreenSchortcutListener) parentActivity;
+            createHomeScreenShortcutListener = (CreateHomeScreenSchortcutListener) context;
         } catch(ClassCastException exception) {
-            throw new ClassCastException(parentActivity.toString() + " must implement CreateHomeScreenShortcutListener.");
+            throw new ClassCastException(context.toString() + " must implement CreateHomeScreenShortcutListener.");
         }
     }
 
+    // `@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 the activity's layout inflater.
         LayoutInflater layoutInflater = getActivity().getLayoutInflater();
@@ -88,6 +94,9 @@ public class CreateHomeScreenShortcut 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);