Fix login issue with internet access. Better solution to check internet connection

with broadcast receiver. Prioritize token login.

app/src/main/java/org/mian/gitnex/helpers/NetworkObserver.java

@@ -0,0 +1,82 @@
+package org.mian.gitnex.helpers;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.Lifecycle;
+import androidx.lifecycle.LifecycleObserver;
+import androidx.lifecycle.OnLifecycleEvent;
+
+/**
+ * Author M M Arif
+ */
+
+public class NetworkObserver implements LifecycleObserver {
+
+    private ConnectivityManager mConnectivityMgr;
+    private Context mContext;
+    private NetworkStateReceiver mNetworkStateReceiver;
+
+    public interface ConnectionStateListener {
+        void onAvailable(boolean isAvailable);
+    }
+
+    public NetworkObserver(Context context) {
+        mContext = context;
+        mConnectivityMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+        ((AppCompatActivity) mContext).getLifecycle().addObserver(this);
+    }
+
+
+    public void onInternetStateListener(ConnectionStateListener listener) {
+
+        mNetworkStateReceiver = new NetworkStateReceiver(listener);
+        IntentFilter intentFilter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
+        mContext.registerReceiver(mNetworkStateReceiver, intentFilter);
+
+    }
+
+
+    @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
+    public void onDestroy() {
+
+        ((AppCompatActivity) mContext).getLifecycle().removeObserver(this);
+
+        if (mNetworkStateReceiver != null) {
+            mContext.unregisterReceiver(mNetworkStateReceiver);
+        }
+
+    }
+
+
+    public class NetworkStateReceiver extends BroadcastReceiver {
+
+        ConnectionStateListener mListener;
+
+        public NetworkStateReceiver(ConnectionStateListener listener) {
+            mListener = listener;
+        }
+
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (intent.getExtras() != null) {
+                NetworkInfo activeNetworkInfo = mConnectivityMgr.getActiveNetworkInfo();
+
+                if (activeNetworkInfo != null && activeNetworkInfo.getState() == NetworkInfo.State.CONNECTED) {
+
+                    mListener.onAvailable(true); // connected
+
+                } else if (intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, Boolean.FALSE)) {
+
+                    mListener.onAvailable(false); // disconnected
+
+                }
+            }
+        }
+    }
+
+}