Merge pull request #140 from kiwix/135

WiFi only preference added

app/src/main/java/org/kiwix/kiwixmobile/KiwixMobileActivity.java

@@ -181,6 +181,8 @@ public class KiwixMobileActivity extends BaseActivity implements WebViewCallback
 
   public static boolean refresh;
 
+  public static boolean wifiOnly;
+
   private static Uri KIWIX_LOCAL_MARKET_URI;
 
   private static Uri KIWIX_BROWSER_MARKET_URI;
@@ -303,6 +305,7 @@ public class KiwixMobileActivity extends BaseActivity implements WebViewCallback
   public void onCreate(Bundle savedInstanceState) {
     SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
     nightMode = sharedPreferences.getBoolean(PREF_NIGHT_MODE, false);
+    wifiOnly = sharedPreferences.getBoolean(KiwixSettingsActivity.PREF_WIFI_ONLY, true);
     if (nightMode) {
       setTheme(R.style.AppTheme_Night);
     }

app/src/main/java/org/kiwix/kiwixmobile/downloader/DownloadFragment.java

@@ -3,9 +3,12 @@ package org.kiwix.kiwixmobile.downloader;
 
 import android.app.Activity;
 import android.app.AlertDialog;
+import android.content.Context;
+import android.content.SharedPreferences;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.os.Bundle;
+import android.preference.PreferenceManager;
 import android.support.annotation.Nullable;
 import android.support.design.widget.CoordinatorLayout;
 import android.support.design.widget.Snackbar;
@@ -25,6 +28,9 @@ import android.widget.TextView;
 import java.util.Arrays;
 import java.util.LinkedHashMap;
 
+import org.kiwix.kiwixmobile.KiwixMobileActivity;
+import org.kiwix.kiwixmobile.settings.KiwixSettingsActivity;
+import org.kiwix.kiwixmobile.utils.NetworkUtils;
 import org.kiwix.kiwixmobile.zim_manager.library_view.LibraryFragment;
 import org.kiwix.kiwixmobile.R;
 import org.kiwix.kiwixmobile.zim_manager.fileselect_view.ZimFileSelectFragment;
@@ -76,6 +82,22 @@ public class DownloadFragment extends Fragment {
     }
   }
 
+  public static void showNoWiFiWarning(Context context, Runnable yesAction) {
+    new AlertDialog.Builder(context)
+            .setTitle(R.string.wifi_only_title)
+            .setMessage(R.string.wifi_only_msg)
+            .setPositiveButton(R.string.yes, (dialog, i) -> {
+              PreferenceManager.getDefaultSharedPreferences(context)
+                      .edit()
+                      .putBoolean(KiwixSettingsActivity.PREF_WIFI_ONLY, false)
+                      .apply();
+              KiwixMobileActivity.wifiOnly = false;
+              yesAction.run();
+            })
+            .setNegativeButton(R.string.no, (dialog, i) -> {})
+            .show();
+  }
+
   public class DownloadAdapter extends BaseAdapter {
 
     private LinkedHashMap<Integer, LibraryNetworkEntity.Book> mData = new LinkedHashMap<Integer, LibraryNetworkEntity.Book>();
@@ -141,8 +163,8 @@ public class DownloadFragment extends Fragment {
 
     private void setPlayState(ImageView pauseButton, int position, int newPlayState) {
         if(newPlayState == DownloadService.PLAY) { //Playing
-            LibraryFragment.mService.playDownload(mKeys[position]);
-            pauseButton.setImageDrawable(ContextCompat.getDrawable(getActivity(), R.drawable.ic_pause_black_24dp));
+            if (LibraryFragment.mService.playDownload(mKeys[position]))
+              pauseButton.setImageDrawable(ContextCompat.getDrawable(getActivity(), R.drawable.ic_pause_black_24dp));
         } else { //Pausing
             LibraryFragment.mService.pauseDownload(mKeys[position]);
             pauseButton.setImageDrawable(ContextCompat.getDrawable(getActivity(), R.drawable.ic_play_arrow_black_24dp));
@@ -185,6 +207,12 @@ public class DownloadFragment extends Fragment {
 
       pause.setOnClickListener(v -> {
         int newPlayPauseState = LibraryFragment.mService.downloadStatus.get(mKeys[position]) == DownloadService.PLAY ? DownloadService.PAUSE : DownloadService.PLAY;
+
+        if (newPlayPauseState == DownloadService.PLAY && KiwixMobileActivity.wifiOnly && !NetworkUtils.isWiFi(getContext())) {
+          showNoWiFiWarning(getContext(), () -> {setPlayState(pause, position, newPlayPauseState);});
+          return;
+        }
+
         setPlayState(pause, position, newPlayPauseState);
       });
 

app/src/main/java/org/kiwix/kiwixmobile/downloader/DownloadService.java

@@ -2,6 +2,7 @@ package org.kiwix.kiwixmobile.downloader;
 
 import static org.kiwix.kiwixmobile.utils.files.FileUtils.getCurrentSize;
 
+import android.app.AlertDialog;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.Service;
@@ -14,6 +15,7 @@ import android.os.IBinder;
 import android.os.Looper;
 import android.preference.PreferenceManager;
 import android.support.v4.app.NotificationCompat;
+import android.util.Log;
 import android.util.Pair;
 import android.util.SparseArray;
 import android.util.SparseIntArray;
@@ -30,7 +32,9 @@ import okhttp3.Response;
 import okio.BufferedSource;
 import org.kiwix.kiwixmobile.KiwixApplication;
 import org.kiwix.kiwixmobile.KiwixMobileActivity;
+import org.kiwix.kiwixmobile.utils.NetworkUtils;
 import org.kiwix.kiwixmobile.utils.TestingUtils;
+import org.kiwix.kiwixmobile.zim_manager.ZimManageActivity;
 import org.kiwix.kiwixmobile.zim_manager.library_view.LibraryFragment;
 import org.kiwix.kiwixmobile.R;
 import org.kiwix.kiwixmobile.database.BookDao;
@@ -58,6 +62,7 @@ public class DownloadService extends Service {
   public static final int CANCEL = 4;
   public static final String ACTION_PAUSE = "PAUSE";
   public static final String ACTION_STOP = "STOP";
+  public static final String ACTION_NO_WIFI = "NO_WIFI";
   public static final String NOTIFICATION_ID = "NOTIFICATION_ID";
   public static int notificationCount = 1;
   public static ArrayList<String> notifications = new ArrayList<>();
@@ -103,7 +108,11 @@ public class DownloadService extends Service {
       return START_NOT_STICKY;
     }
     if (intent.hasExtra(NOTIFICATION_ID) && intent.getAction().equals(ACTION_PAUSE)) {
-      toggleDownload(intent.getIntExtra(NOTIFICATION_ID, 0));
+      if (KiwixMobileActivity.wifiOnly && !NetworkUtils.isWiFi(getApplicationContext())) {
+        startActivity(new Intent(this, ZimManageActivity.class).setAction(ACTION_NO_WIFI).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
+        this.sendBroadcast(new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS));
+      } else
+        toggleDownload(intent.getIntExtra(NOTIFICATION_ID, 0));
       return START_NOT_STICKY;
     }
 
@@ -201,7 +210,7 @@ public class DownloadService extends Service {
     downloadFragment.listView.invalidateViews();
   }
 
-  public void playDownload(int notificationID) {
+  public boolean playDownload(int notificationID) {
     downloadStatus.put(notificationID, PLAY);
     synchronized (pauseLock) {
       pauseLock.notify();
@@ -211,6 +220,8 @@ public class DownloadService extends Service {
     notificationManager.notify(notificationID, notification.get(notificationID).build());
     downloadFragment.downloadAdapter.notifyDataSetChanged();
     downloadFragment.listView.invalidateViews();
+
+    return true;
   }
 
   private void downloadBook(String url, int notificationID, LibraryNetworkEntity.Book book) {
@@ -365,6 +376,10 @@ public class DownloadService extends Service {
                 attempts = timeout;
                 break;
               }
+
+              if (KiwixMobileActivity.wifiOnly && !NetworkUtils.isWiFi(getApplicationContext()))
+                pauseDownload(chunk.getNotificationID());
+
               if (downloadStatus.get(chunk.getNotificationID()) == PAUSE) {
                 synchronized (pauseLock) {
                   try {

app/src/main/java/org/kiwix/kiwixmobile/settings/KiwixSettingsActivity.java

@@ -81,6 +81,8 @@ public class KiwixSettingsActivity extends AppCompatActivity {
 
   public static final String PREF_HIDETOOLBAR = "pref_hidetoolbar";
 
+  public static final String PREF_WIFI_ONLY = "pref_wifi_only";
+
   public static String zimFile;
 
   public static boolean allHistoryCleared = false;
@@ -266,6 +268,9 @@ public class KiwixSettingsActivity extends AppCompatActivity {
         KiwixMobileActivity.nightMode = sharedPreferences.getBoolean(PREF_NIGHTMODE, false);
         getActivity().recreate();
       }
+      if (key.equals(PREF_WIFI_ONLY)) {
+        KiwixMobileActivity.wifiOnly = sharedPreferences.getBoolean(PREF_WIFI_ONLY, true);
+      }
 
     }
 

app/src/main/java/org/kiwix/kiwixmobile/utils/NetworkUtils.java

@@ -3,6 +3,7 @@ package org.kiwix.kiwixmobile.utils;
 import android.content.Context;
 import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
+import android.os.Build;
 import android.util.Log;
 import java.util.UUID;
 import org.kiwix.kiwixmobile.KiwixMobileActivity;
@@ -29,6 +30,21 @@ public class NetworkUtils {
     return false;
   }
 
+  public static boolean isWiFi(Context context) {
+    ConnectivityManager connectivity = (ConnectivityManager) context
+            .getSystemService(Context.CONNECTIVITY_SERVICE);
+    if (connectivity == null)
+      return false;
+
+    if (Build.VERSION.SDK_INT >= 23) {
+      NetworkInfo network = connectivity.getActiveNetworkInfo();
+      return network.getType() == ConnectivityManager.TYPE_WIFI;
+    } else {
+      NetworkInfo wifi = connectivity.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
+      return wifi.isConnected();
+    }
+  }
+
   public static String getFileNameFromUrl(String url) {
 
     int index = url.lastIndexOf('?');

app/src/main/java/org/kiwix/kiwixmobile/zim_manager/ZimManageActivity.java

@@ -30,6 +30,7 @@ import java.util.ArrayList;
 
 import java.util.List;
 import org.kiwix.kiwixmobile.KiwixMobileActivity;
+import org.kiwix.kiwixmobile.downloader.DownloadService;
 import org.kiwix.kiwixmobile.library.LibraryAdapter.Language;
 import org.kiwix.kiwixmobile.utils.TestingUtils;
 import org.kiwix.kiwixmobile.zim_manager.library_view.LibraryFragment;
@@ -81,6 +82,10 @@ public class ZimManageActivity extends AppCompatActivity {
 
     setUpToolbar();
 
+    if (DownloadService.ACTION_NO_WIFI.equals(getIntent().getAction())) {
+      DownloadFragment.showNoWiFiWarning(this, () -> {});
+    }
+
     // Create the adapter that will return a fragment for each of the three
     // primary sections of the activity.
     mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

app/src/main/java/org/kiwix/kiwixmobile/zim_manager/library_view/LibraryFragment.java

@@ -52,6 +52,7 @@ import org.kiwix.kiwixmobile.downloader.DownloadIntent;
 import org.kiwix.kiwixmobile.downloader.DownloadService;
 import org.kiwix.kiwixmobile.library.LibraryAdapter;
 import org.kiwix.kiwixmobile.network.KiwixService;
+import org.kiwix.kiwixmobile.utils.NetworkUtils;
 import org.kiwix.kiwixmobile.utils.StorageUtils;
 import org.kiwix.kiwixmobile.utils.StyleUtils;
 import org.kiwix.kiwixmobile.utils.TestingUtils;
@@ -190,20 +191,6 @@ public class LibraryFragment extends Fragment
     TestingUtils.unbindResource(LibraryFragment.class);
   }
 
-
-  public void displayNetworkConfirmation() {
-    libraryList.removeFooterView(progressBar);
-    networkText.setText(R.string.download_over_network);
-    networkText.setVisibility(View.VISIBLE);
-    permissionButton.setVisibility(View.VISIBLE);
-    permissionButton.setOnClickListener(view -> {
-      presenter.loadBooks();
-      permissionButton.setVisibility(View.GONE);
-      networkText.setVisibility(View.GONE);
-    });
-    TestingUtils.unbindResource(LibraryFragment.class);
-  }
-
   public void noNetworkConnection() {
     displayNoNetworkConnection();
   }
@@ -259,24 +246,14 @@ public class LibraryFragment extends Fragment
         return;
       }
 
-      if (isWiFi()) {
-        downloadFile((Book) parent.getAdapter().getItem(position));
+      if (KiwixMobileActivity.wifiOnly && !NetworkUtils.isWiFi(getContext())) {
+        DownloadFragment.showNoWiFiWarning(getContext(), () -> {downloadFile((Book) parent.getAdapter().getItem(position));});
       } else {
-        mobileDownloadDialog(position, parent);
+        downloadFile((Book) parent.getAdapter().getItem(position));
       }
     }
   }
 
-  public boolean isWiFi() {
-    if (Build.VERSION.SDK_INT >= 23) {
-      NetworkInfo network = conMan.getActiveNetworkInfo();
-      return network.getType() == ConnectivityManager.TYPE_WIFI;
-    } else {
-      NetworkInfo wifi = conMan.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
-      return wifi.isConnected();
-    }
-  }
-
 
   public void mobileDownloadDialog(int position, AdapterView<?> parent) {
     new AlertDialog.Builder(super.getActivity(), dialogStyle())
@@ -296,7 +273,7 @@ public class LibraryFragment extends Fragment
   @Override
   public void downloadFile(Book book) {
     downloadingBooks.add(book);
-    if (libraryAdapter != null && faActivity.searchView != null) {
+    if (libraryAdapter != null && faActivity != null && faActivity.searchView != null) {
       libraryAdapter.getFilter().filter(faActivity.searchView.getQuery());
     }
     Toast.makeText(super.getActivity(), getString(R.string.download_started_library), Toast.LENGTH_LONG)
@@ -365,11 +342,9 @@ public class LibraryFragment extends Fragment
       NetworkInfo network = conMan.getActiveNetworkInfo();
 
       if ((books == null || books.isEmpty()) && network != null && network.isConnected()) {
-        if (isWiFi()) {
-          presenter.loadBooks();
-        } else {
-          displayNetworkConfirmation();
-        }
+        presenter.loadBooks();
+        permissionButton.setVisibility(View.GONE);
+        networkText.setVisibility(View.GONE);
       }
     }
   }

app/src/main/res/values/strings.xml

@@ -111,7 +111,6 @@
   <string name="no_downloads_here">No downloads here</string>
   <string name="no_files_here">No files here</string>
   <string name="download_complete_snackbar">Download complete</string>
-  <string name="download_over_network">Are you sure you want to start the download without WiFi?</string>
   <string name="download_no_space">Insufficient space to download this file.</string>
   <string name="space_available">Space Available:</string>
   <string name="zim_simple">Simple</string>
@@ -165,4 +164,7 @@
   <string name="delete_tab">Delete Tab</string>
   <string name="next">Next</string>
   <string name="previous">Previous</string>
+  <string name="wifi_only_title">Allow downloading content via mobile network?</string>
+  <string name="wifi_only_msg">If you choose "Yes" you won\'t be warned in future. However, you can always change this in Settings</string>
+  <string name="pref_wifi_only">Download content only via WiFi</string>
 </resources>

app/src/main/res/xml/preferences.xml

@@ -38,6 +38,11 @@
       android:key="pref_full_text_search"
       android:title="@string/pref_full_text_search_title"
       android:summary="@string/pref_full_text_search_summary"/>
+
+      <org.kiwix.kiwixmobile.settings.CustomSwitchPreference
+          android:defaultValue="true"
+          android:key="pref_wifi_only"
+          android:title="@string/pref_wifi_only"/>
   </PreferenceCategory>
 
   <PreferenceCategory