An effective way to display the “Cant access network” View with “Retry” and additional options such as “Wi-Fi Settings”, “Mobile Network”,

Question

I need to include this in my application

When does it fire?

• Any action initiated by the user from the user interface requires the Internet and no Internet
• Any background actions (such as asynchronous image downloads) that require the Internet do not have Internet access.
• NOT when the application is in standby mode or when background / user actions are not performed that require access to the Internet

What have i tried?

• I am using Volley . Launched AlertDialoginside Response.ErrorListenerVolley, every time I wrote aJsonObjectRequest

: , AlertDialog

2. Alerts AlertDialog ,

   DialogInterface.OnClickListener onClickTryAgain = new DialogInterface.OnClickListener() {
       @Override
       public void onClick(DialogInterface dialog, int which) {
           Swift.getInstance(ProfileActivity.this).addToRequestQueue(jsonObjectRequest);
       }
   };
   if(error instanceof TimeoutError) Alerts.timeoutErrorAlert(ProfileActivity.this, onClickTryAgain);
   else if(error instanceof NoConnectionError) Alerts.internetConnectionErrorAlert(ProfileActivity.this, onClickTryAgain);
           else Alerts.unknownErrorAlert(ProfileActivity.this);
   

My Alerts.class

    public class Alerts {


        public static void internetConnectionErrorAlert(final Context context, DialogInterface.OnClickListener onClickTryAgainButton) {
            String message = "Sometimes the internet gets a bit sleepy and takes a nap. Make sure its up and running then we'll give it another go";
            new AlertDialog.Builder(context)
                    .setIconAttribute(android.R.attr.alertDialogIcon)
                    .setTitle("Network Error")
                    .setMessage(message)
                    .setPositiveButton("Try Again", onClickTryAgainButton)
                    .setNegativeButton("Turn Internet On", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            Intent i = new Intent(Settings.ACTION_SETTINGS);
                            ((Activity) context).startActivityForResult(i, 0);
                        }
                    })
                    .show();
        }

        public static void timeoutErrorAlert(Context context, DialogInterface.OnClickListener onClickTryAgainButton) {
            String message = "Are you connected to internet? We guess you aren't. Turn it on and we'll rock and roll!";
            new AlertDialog.Builder(context)
                    .setIconAttribute(android.R.attr.alertDialogIcon)
                    .setTitle("Network Error")
                    .setMessage(message)
                    .setPositiveButton("Try Again", onClickTryAgainButton)
                    .show();
        }

        public static void unknownErrorAlert(Context context) {
            new AlertDialog.Builder(context)
                    .setIconAttribute(android.R.attr.alertDialogIcon)
                    .setTitle("Server Error")
                    .setMessage("We all have bad days! We'll fix this soon...")
                    .setPositiveButton("Hmm, I understand", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                        }
                    })
                    .show();
        }
    }

: Try again , . , , , - , , 30 5 , ? connecting,

3. ConnectingLayout, .

   <LinearLayout
       android:orientation="vertical"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:gravity="center_vertical|center_horizontal"
       android:id="@+id/loading_layout"
       android:visibility="gone">
   
       <ProgressBar
           style="?android:attr/progressBarStyleLarge"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:indeterminate="true" />
   
       <TextView
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="@string/loading"
           android:gravity="center_horizontal"
           android:textSize="25sp"
           android:fontFamily="sans-serif-light"
           android:layout_margin="5dp"
           android:singleLine="true" />
   
       <TextView
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="@string/loading_description"
           android:gravity="center_horizontal"
           android:fontFamily="sans-serif-light"
           android:layout_margin="5dp"
           android:singleLine="true" />
   </LinearLayout>
   

    jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, getString(R.string.api_root_path) + "/profile", getJson(), new Response.Listener<JSONObject>() {
        @Override
        public void onResponse(JSONObject response) {
            try {
                if(response.getBoolean("success")) {
                    Animations.fadeOut(loadingLayout,500);
                    Animations.fadeIn(mainLayout,500);
                    JSONObject dataJson = response.getJSONObject("data");
                    JSONObject userJson = dataJson.getJSONObject("user");
                    name.setText(userJson.getString("name"));
                    dob.setText(userJson.getString("dob").equals("null")?null:userJson.getString("dob"));
                    email.setText(userJson.getString("email"));
                    phone.setText(userJson.getString("mobile_no"));
                    promotionOffers.setChecked(userJson.getBoolean("offers"));
                } else {
                    Alerts.requestUnauthorisedAlert(ProfileActivity.this);
                    System.out.println(response.getString("error"));
                }
            } catch (JSONException e) { e.printStackTrace(); }
        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            DialogInterface.OnClickListener onClickTryAgain = new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    VolleyBaseClass.getInstance(ProfileActivity.this).addToRequestQueue(jsonObjectRequest);
                }
            };
            if(error instanceof TimeoutError) Alerts.timeoutErrorAlert(ProfileActivity.this, onClickTryAgain);
            else if(error instanceof NoConnectionError) Alerts.internetConnectionErrorAlert(ProfileActivity.this, onClickTryAgain);
            else Alerts.unknownErrorAlert(ProfileActivity.this);
            System.out.println("Response Error: " + error);
        }
    });
    Animations.fadeIn(loadingLayout, 500);
    Animations.fadeOut(mainLayout, 500);
    VolleyBaseClass.getInstance(this).addToRequestQueue(jsonObjectRequest);

, Animations.fadeIn(View view, int ms); Animations.fadeOut(View view, int ms); .

:

4. ViewStub s. , ConnectingLayout. , , ..

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5. , : ", -". , SwipeRefreshLayout?

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6. same fragment in all activities redirecting to a callActivityForResult (, )

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Answer 1

Volley DETROYS , - , , .

, .

.

• Retry , Wifi Settings, Mobile Network Settings
• FrameLayout RelativeLayout .
• , FrameLayout , ,

Answer 2

. Volley jus, , , rxJava , , Alerts /. ConnectivityManager NoConnectionPolicy.