Merge "Listener to tether state change on Network & internet page." into oc-dev

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

@@ -18,7 +18,10 @@ package com.android.settings.network;
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothPan;
 import android.bluetooth.BluetoothProfile;
+import android.content.BroadcastReceiver;
 import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
 import android.database.ContentObserver;
 import android.net.ConnectivityManager;
 import android.net.Uri;
@@ -67,6 +70,7 @@ public class TetherPreferenceController extends PreferenceController
 
     private SettingObserver mAirplaneModeObserver;
     private Preference mPreference;
+    private TetherBroadcastReceiver mTetherReceiver;
 
     @VisibleForTesting(otherwise = VisibleForTesting.NONE)
     TetherPreferenceController() {
@@ -131,6 +135,11 @@ public class TetherPreferenceController extends PreferenceController
         if (mAirplaneModeObserver == null) {
             mAirplaneModeObserver = new SettingObserver();
         }
+        if (mTetherReceiver == null) {
+            mTetherReceiver = new TetherBroadcastReceiver();
+        }
+        mContext.registerReceiver(
+            mTetherReceiver, new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED));
         mContext.getContentResolver()
                 .registerContentObserver(mAirplaneModeObserver.uri, false, mAirplaneModeObserver);
     }
@@ -140,6 +149,9 @@ public class TetherPreferenceController extends PreferenceController
         if (mAirplaneModeObserver != null) {
             mContext.getContentResolver().unregisterContentObserver(mAirplaneModeObserver);
         }
+        if (mTetherReceiver != null) {
+            mContext.unregisterReceiver(mTetherReceiver);
+        }
     }
 
     @Override
@@ -238,4 +250,14 @@ public class TetherPreferenceController extends PreferenceController
             }
         }
     }
+
+    @VisibleForTesting
+    class TetherBroadcastReceiver extends BroadcastReceiver {
+
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            updateSummary();
+        }
+
+    }
 }

tests/robotests/src/com/android/settings/network/TetherPreferenceControllerTest.java

@@ -20,7 +20,10 @@ package com.android.settings.network;
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothPan;
 import android.bluetooth.BluetoothProfile;
+import android.content.ContentResolver;
 import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
 import android.database.ContentObserver;
 import android.net.ConnectivityManager;
 import android.provider.Settings;
@@ -41,6 +44,7 @@ import org.robolectric.util.ReflectionHelpers;
 
 import java.util.concurrent.atomic.AtomicReference;
 
+import static org.mockito.Matchers.any;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
@@ -150,4 +154,36 @@ public class TetherPreferenceControllerTest {
         verify(mPreference).setSummary(R.string.switch_off_text);
     }
 
+    @Test
+    public void onResume_shouldRegisterTetherReceiver() {
+        when(mContext.getContentResolver()).thenReturn(mock(ContentResolver.class));
+
+        mController.onResume();
+
+        verify(mContext).registerReceiver(
+            any(TetherPreferenceController.TetherBroadcastReceiver.class), any(IntentFilter.class));
+    }
+
+    @Test
+    public void onPause_shouldUnregisterTetherReceiver() {
+        when(mContext.getContentResolver()).thenReturn(mock(ContentResolver.class));
+        mController.onResume();
+
+        mController.onPause();
+
+        verify(mContext).unregisterReceiver(
+            any(TetherPreferenceController.TetherBroadcastReceiver.class));
+    }
+
+    @Test
+    public void tetherStatesChanged_shouldUpdateSummary() {
+        final Context context = RuntimeEnvironment.application;
+        ReflectionHelpers.setField(mController, "mContext", context);
+        mController.onResume();
+
+        context.sendBroadcast(new Intent(ConnectivityManager.ACTION_TETHER_STATE_CHANGED));
+
+        verify(mController).updateSummary();
+    }
+
 }