[Settings] Fix unable to accessing Fi

1. Get subscription ID from intent
2. Application context for proxy SubscriptionManager (since this is singleton)

Bug: 144172733
Test: Manual
Change-Id: I2f49d55da3380adeb40e8ff9414057113cb4ac35

src/com/android/settings/network/ActiveSubsciptionsListener.java

@@ -24,6 +24,7 @@ import android.telephony.CarrierConfigManager;
 import android.telephony.SubscriptionInfo;
 import android.telephony.SubscriptionManager;
 import android.text.TextUtils;
+import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
 
@@ -37,6 +38,8 @@ import java.util.List;
 public abstract class ActiveSubsciptionsListener
         extends SubscriptionManager.OnSubscriptionsChangedListener {
 
+    private static final String TAG = "ActiveSubsciptions";
+
     /**
      * Constructor
      *
@@ -155,6 +158,18 @@ public abstract class ActiveSubsciptionsListener
         }
         mIsCachedDataAvailable = mIsMonitoringDataChange;
         mCachedActiveSubscriptionInfo = getSubscriptionManager().getActiveSubscriptionInfoList();
+
+        if ((mCachedActiveSubscriptionInfo == null)
+                || (mCachedActiveSubscriptionInfo.size() <= 0)) {
+            Log.d(TAG, "active subscriptions: " + mCachedActiveSubscriptionInfo);
+        } else {
+            final StringBuilder logString = new StringBuilder("active subscriptions:");
+            for (SubscriptionInfo subInfo : mCachedActiveSubscriptionInfo) {
+                logString.append(" " + subInfo.getSubscriptionId());
+            }
+            Log.d(TAG, logString.toString());
+        }
+
         return mCachedActiveSubscriptionInfo;
     }
 
@@ -246,7 +261,10 @@ public abstract class ActiveSubsciptionsListener
     }
 
     private boolean clearCachedSubId(int subId) {
-        if ((!mIsCachedDataAvailable) || (mCachedActiveSubscriptionInfo == null)) {
+        if (!mIsCachedDataAvailable) {
+            return false;
+        }
+        if (mCachedActiveSubscriptionInfo == null) {
             return false;
         }
         for (SubscriptionInfo subInfo : mCachedActiveSubscriptionInfo) {

src/com/android/settings/network/ProxySubscriptionManager.java

@@ -35,8 +35,7 @@ import java.util.List;
 /**
  * A proxy to the subscription manager
  */
-public class ProxySubscriptionManager extends SubscriptionManager.OnSubscriptionsChangedListener
+public class ProxySubscriptionManager implements LifecycleObserver {
-        implements LifecycleObserver {
 
     /**
      * Interface for monitor active subscriptions list changing
@@ -65,7 +64,7 @@ public class ProxySubscriptionManager extends SubscriptionManager.OnSubscription
         if (sSingleton != null) {
             return sSingleton;
         }
-        sSingleton = new ProxySubscriptionManager(context);
+        sSingleton = new ProxySubscriptionManager(context.getApplicationContext());
         return sSingleton;
     }
 
@@ -110,12 +109,6 @@ public class ProxySubscriptionManager extends SubscriptionManager.OnSubscription
         }
     }
 
-    @Override
-    public void onSubscriptionsChanged() {
-        clearCache();
-        notifyAllListeners();
-    }
-
     /**
      * Lifecycle for data within proxy
      *

src/com/android/settings/network/telephony/MobileNetworkActivity.java

@@ -89,9 +89,12 @@ public class MobileNetworkActivity extends SettingsBaseActivity
         mProxySubscriptionMgr.setLifecycle(getLifecycle());
         mProxySubscriptionMgr.addActiveSubscriptionsListener(this);
 
+        final Intent startIntent = getIntent();
         mCurSubscriptionId = savedInstanceState != null
                 ? savedInstanceState.getInt(Settings.EXTRA_SUB_ID, SUB_ID_NULL)
-                : SUB_ID_NULL;
+                : ((startIntent != null)
+                ? startIntent.getIntExtra(Settings.EXTRA_SUB_ID, SUB_ID_NULL)
+                : SUB_ID_NULL);
 
         final SubscriptionInfo subscription = getSubscription();
         updateTitleAndNavigation(subscription);