Network status on articles loading.

app/src/main/AndroidManifest.xml

@@ -3,6 +3,7 @@
     package="apps.amine.bou.readerforselfoss"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.INTERNET" />
 
     <application

app/src/main/java/apps/amine/bou/readerforselfoss/HomeActivity.kt

@@ -47,6 +47,7 @@ import apps.amine.bou.readerforselfoss.utils.drawer.CustomUrlPrimaryDrawerItem
 import apps.amine.bou.readerforselfoss.utils.flattenTags
 import apps.amine.bou.readerforselfoss.utils.longHash
 import apps.amine.bou.readerforselfoss.utils.maybeHandleSilentException
+import apps.amine.bou.readerforselfoss.utils.network.isNetworkAccessible
 import apps.amine.bou.readerforselfoss.utils.persistence.toEntity
 import apps.amine.bou.readerforselfoss.utils.persistence.toView
 import co.zsmb.materialdrawerkt.builders.accountHeader
@@ -333,7 +334,6 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
 
         getElementsAccordingToTab()
 
-
         handleGDPRDialog(sharedPref.getBoolean("GDPR_shown", false))
     }
 
@@ -817,12 +817,52 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
             override fun onTabSelected(position: Int) {
                 offset = 0
                 lastFetchDone = false
+
+                if (itemsCaching) {
+
+                    if (!swipeRefreshLayout.isRefreshing) {
+                        swipeRefreshLayout.post { swipeRefreshLayout.isRefreshing = true }
+                    }
+
+                    thread {
+                        val dbItems = db.itemsDao().items().map { it.toView() }
+                        runOnUiThread {
+                            if (dbItems.isNotEmpty()) {
+                                items = when (position) {
+                                    0 -> ArrayList(dbItems.filter { it.unread })
+                                    1 -> ArrayList(dbItems.filter { !it.unread })
+                                    2 -> ArrayList(dbItems.filter { it.starred })
+                                    else -> ArrayList(dbItems.filter { it.unread })
+                                }
+                                handleListResult()
                                 when (position) {
                                     0 -> getUnRead()
                                     1 -> getRead()
                                     2 -> getStarred()
                                     else -> Unit
                                 }
+                            } else {
+                                if (this@HomeActivity.isNetworkAccessible(this@HomeActivity.findViewById(R.id.coordLayout))) {
+                                    when (position) {
+                                        0 -> getUnRead()
+                                        1 -> getRead()
+                                        2 -> getStarred()
+                                        else -> Unit
+                                    }
+                                    getAndStoreAllItems()
+                                }
+                            }
+                        }
+                    }
+
+                } else {
+                    when (position) {
+                        0 -> getUnRead()
+                        1 -> getRead()
+                        2 -> getStarred()
+                        else -> Unit
+                    }
+                }
             }
         })
     }
@@ -899,11 +939,13 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                         handleListResult()
                         doGetAccordingToTab()
                     } else {
+                        if (this@HomeActivity.isNetworkAccessible(this@HomeActivity.findViewById(R.id.coordLayout))) {
                             doGetAccordingToTab()
                             getAndStoreAllItems()
                         }
                     }
                 }
+            }
 
         } else {
             doGetAccordingToTab()
@@ -956,6 +998,7 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
             swipeRefreshLayout.post { swipeRefreshLayout.isRefreshing = true }
         }
 
+        if (this@HomeActivity.isNetworkAccessible(this@HomeActivity.findViewById(R.id.coordLayout))) {
             call(maybeTagFilter?.tag, maybeSourceFilter?.id?.toLong(), maybeSearchFilter)
                 .enqueue(object : Callback<List<Item>> {
                     override fun onResponse(
@@ -974,6 +1017,9 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                         ).show()
                     }
                 })
+        } else {
+            swipeRefreshLayout.post { swipeRefreshLayout.isRefreshing = false }
+        }
     }
 
     private fun getUnRead(appendResults: Boolean = false) {

app/src/main/java/apps/amine/bou/readerforselfoss/utils/network/NetworkUtils.kt

@@ -0,0 +1,39 @@
+package apps.amine.bou.readerforselfoss.utils.network
+
+import android.content.Context
+import android.graphics.Color
+import android.net.ConnectivityManager
+import android.net.NetworkInfo
+import android.view.View
+import android.widget.TextView
+import apps.amine.bou.readerforselfoss.R
+import com.google.android.material.snackbar.Snackbar
+
+var snackBarShown = false
+
+fun Context.isNetworkAccessible(v: View?): Boolean {
+    val cm = this.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+    val activeNetwork: NetworkInfo? = cm.activeNetworkInfo
+    val networkIsAccessible = activeNetwork != null && activeNetwork.isConnectedOrConnecting
+
+    if (v != null && !networkIsAccessible && !snackBarShown) {
+        val s = Snackbar
+            .make(
+                v,
+                R.string.no_network_connectivity,
+                Snackbar.LENGTH_INDEFINITE
+            )
+
+        s.setAction(android.R.string.ok) {
+            snackBarShown = false
+            s.dismiss()
+        }
+
+        val view = s.view
+        val tv: TextView = view.findViewById(com.google.android.material.R.id.snackbar_text)
+        tv.setTextColor(Color.WHITE)
+        s.show()
+        snackBarShown = true
+    }
+    return networkIsAccessible
+}

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

@@ -152,4 +152,5 @@
     <string name="pref_switch_items_caching_off">Articles won\'t be saved to the device memory, and the app won\'t be usable offline.</string>
     <string name="pref_switch_items_caching_on">Articles will be saved to the device memory and will be used for offline use.</string>
     <string name="pref_switch_items_caching">Save items for offline use</string>
+    <string name="no_network_connectivity">Not connected !</string>
 </resources>