Only register conditions receiver when needed.

1. Update the dnd receiver to listen when dashboard summary running.
- remove the dnd receiver from Android manifest, and create it inside
the dnd condition.
- add lifecycle implementation to condition manager, so that the dnd
condition can know when to register and unregister the receiver.
- remove getReceiverClass() from dnd condition so that its receiver will
not be disabled by the default condition handling when condition is
silenced.

2. Remove all other conditions receiver from Android manifest.
- the broadcast receivers for HotspotCondition, AirplaneModeCondition,
CellularDataCondition from the manifest and create them inside the
condition classes.
- update Condition.onSilenceChanged() to register/unregister the
receivers instead of enable/disable the receiver class.

Change-Id: Iea6288382680df2b02884d1934b8db85daae404c
Fix: 35968517
Test: make RunSettingsRoboTests

src/com/android/settings/dashboard/DashboardSummary.java

@@ -92,6 +92,7 @@ public class DashboardSummary extends InstrumentedFragment
         mSummaryLoader = new SummaryLoader(activity, CategoryKey.CATEGORY_HOMEPAGE);
 
         mConditionManager = ConditionManager.get(activity, false);
+        getLifecycle().addObserver(mConditionManager);
         mSuggestionParser = new SuggestionParser(activity,
                 activity.getSharedPreferences(SUGGESTIONS, 0), R.xml.suggestion_ordering);
         mSuggestionsChecks = new SuggestionsChecks(getContext());

src/com/android/settings/dashboard/conditional/AirplaneModeCondition.java

@@ -18,6 +18,7 @@ package com.android.settings.dashboard.conditional;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.graphics.drawable.Icon;
 import android.net.ConnectivityManager;
 import android.util.Log;
@@ -29,8 +30,14 @@ import com.android.settingslib.WirelessUtils;
 public class AirplaneModeCondition extends Condition {
     public static String TAG = "APM_Condition";
 
+    private final Receiver mReceiver;
+
+    private static final IntentFilter AIRPLANE_MODE_FILTER =
+        new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED);
+
     public AirplaneModeCondition(ConditionManager conditionManager) {
         super(conditionManager);
+        mReceiver = new Receiver();
     }
 
     @Override
@@ -40,8 +47,13 @@ public class AirplaneModeCondition extends Condition {
     }
 
     @Override
-    protected Class<?> getReceiverClass() {
-        return Receiver.class;
+    protected BroadcastReceiver getReceiver() {
+        return mReceiver;
+    }
+
+    @Override
+    protected IntentFilter getIntentFilter() {
+        return AIRPLANE_MODE_FILTER;
     }
 
     @Override

src/com/android/settings/dashboard/conditional/CellularDataCondition.java

@@ -13,6 +13,7 @@ package com.android.settings.dashboard.conditional;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.graphics.drawable.Icon;
 import android.net.ConnectivityManager;
 import android.telephony.TelephonyManager;
@@ -23,8 +24,14 @@ import com.android.settings.Settings;
 
 public class CellularDataCondition extends Condition {
 
+    private final Receiver mReceiver;
+
+    private static final IntentFilter DATA_CONNECTION_FILTER =
+        new IntentFilter(TelephonyIntents.ACTION_ANY_DATA_CONNECTION_STATE_CHANGED);
+
     public CellularDataCondition(ConditionManager manager) {
         super(manager);
+        mReceiver = new Receiver();
     }
 
     @Override
@@ -41,8 +48,13 @@ public class CellularDataCondition extends Condition {
     }
 
     @Override
-    protected Class<?> getReceiverClass() {
-        return Receiver.class;
+    protected BroadcastReceiver getReceiver() {
+        return mReceiver;
+    }
+
+    @Override
+    protected IntentFilter getIntentFilter() {
+        return DATA_CONNECTION_FILTER;
     }
 
     @Override

src/com/android/settings/dashboard/conditional/Condition.java

@@ -16,18 +16,17 @@
 
 package com.android.settings.dashboard.conditional;
 
-import android.content.ComponentName;
+import android.content.BroadcastReceiver;
 import android.content.Context;
-import android.content.pm.PackageManager;
+import android.content.IntentFilter;
 import android.graphics.drawable.Icon;
 import android.os.PersistableBundle;
 
+import android.support.annotation.VisibleForTesting;
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.core.instrumentation.MetricsFeatureProvider;
 import com.android.settings.overlay.FeatureFactory;
 
-import static android.content.pm.PackageManager.DONT_KILL_APP;
-
 public abstract class Condition {
 
     private static final String KEY_SILENCE = "silence";
@@ -49,12 +48,6 @@ public abstract class Condition {
     Condition(ConditionManager manager, MetricsFeatureProvider metricsFeatureProvider) {
         mManager = manager;
         mMetricsFeatureProvider = metricsFeatureProvider;
-        Class<?> receiverClass = getReceiverClass();
-        if (receiverClass != null && shouldAlwaysListenToBroadcast()) {
-            PackageManager pm = mManager.getContext().getPackageManager();
-            pm.setComponentEnabledSetting(new ComponentName(mManager.getContext(), receiverClass),
-                    PackageManager.COMPONENT_ENABLED_STATE_ENABLED, DONT_KILL_APP);
-        }
     }
 
     void restoreState(PersistableBundle bundle) {
@@ -110,29 +103,25 @@ public abstract class Condition {
         }
     }
 
-    private void onSilenceChanged(boolean silenced) {
-        if (shouldAlwaysListenToBroadcast()) {
-            // Don't try to disable BroadcastReceiver if we want it always on.
+    @VisibleForTesting
+    void onSilenceChanged(boolean silenced) {
+        final BroadcastReceiver receiver = getReceiver();
+        if (receiver == null) {
             return;
         }
-        Class<?> clz = getReceiverClass();
-        if (clz == null) {
-            return;
+        if (silenced) {
+            mManager.getContext().registerReceiver(receiver, getIntentFilter());
+        } else {
+            mManager.getContext().unregisterReceiver(receiver);
         }
-        // Only need to listen for changes when its been silenced.
-        PackageManager pm = mManager.getContext().getPackageManager();
-        pm.setComponentEnabledSetting(new ComponentName(mManager.getContext(), clz),
-                silenced ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
-                        : PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
-                DONT_KILL_APP);
     }
 
-    protected Class<?> getReceiverClass() {
+    protected BroadcastReceiver getReceiver() {
         return null;
     }
 
-    protected boolean shouldAlwaysListenToBroadcast() {
-        return false;
+    protected IntentFilter getIntentFilter() {
+        return null;
     }
 
     public boolean shouldShow() {
@@ -143,6 +132,12 @@ public abstract class Condition {
         return mLastStateChange;
     }
 
+    public void onResume() {
+    }
+
+    public void onPause() {
+    }
+
     // State.
     public abstract void refreshState();
 

src/com/android/settings/dashboard/conditional/ConditionManager.java

@@ -21,6 +21,9 @@ import android.os.PersistableBundle;
 import android.util.Log;
 import android.util.Xml;
 
+import com.android.settings.core.lifecycle.LifecycleObserver;
+import com.android.settings.core.lifecycle.events.OnPause;
+import com.android.settings.core.lifecycle.events.OnResume;
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
 import org.xmlpull.v1.XmlSerializer;
@@ -34,7 +37,7 @@ import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
 
-public class ConditionManager {
+public class ConditionManager implements LifecycleObserver, OnResume, OnPause {
 
     private static final String TAG = "ConditionManager";
 
@@ -228,6 +231,20 @@ public class ConditionManager {
         mListeners.remove(listener);
     }
 
+    @Override
+    public void onResume() {
+        for (int i = 0, size = mConditions.size(); i < size; i++) {
+            mConditions.get(i).onResume();
+        }
+    }
+
+    @Override
+    public void onPause() {
+        for (int i = 0, size = mConditions.size(); i < size; i++) {
+            mConditions.get(i).onPause();
+        }
+    }
+
     private class ConditionLoader extends AsyncTask<Void, Void, ArrayList<Condition>> {
         @Override
         protected ArrayList<Condition> doInBackground(Void... params) {

src/com/android/settings/dashboard/conditional/DndCondition.java

@@ -21,11 +21,13 @@ import android.app.StatusBarManager;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.graphics.drawable.Icon;
 import android.os.PersistableBundle;
 import android.provider.Settings;
 import android.provider.Settings.Global;
 import android.service.notification.ZenModeConfig;
+import android.support.annotation.VisibleForTesting;
 
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
@@ -35,11 +37,21 @@ public class DndCondition extends Condition {
     private static final String TAG = "DndCondition";
     private static final String KEY_STATE = "state";
 
+    private boolean mRegistered;
+
+    @VisibleForTesting
+    static final IntentFilter DND_FILTER =
+        new IntentFilter(NotificationManager.ACTION_INTERRUPTION_FILTER_CHANGED_INTERNAL);
+
     private int mZen;
     private ZenModeConfig mConfig;
+    private final Receiver mReceiver;
 
     public DndCondition(ConditionManager manager) {
         super(manager);
+        mReceiver = new Receiver();
+        mManager.getContext().registerReceiver(mReceiver, DND_FILTER);
+        mRegistered = true;
     }
 
     @Override
@@ -68,11 +80,6 @@ public class DndCondition extends Condition {
         mZen = bundle.getInt(KEY_STATE, Global.ZEN_MODE_OFF);
     }
 
-    @Override
-    protected Class<?> getReceiverClass() {
-        return Receiver.class;
-    }
-
     private CharSequence getZenState() {
         switch (mZen) {
             case Settings.Global.ZEN_MODE_ALARMS:
@@ -149,7 +156,16 @@ public class DndCondition extends Condition {
     }
 
     @Override
-    protected boolean shouldAlwaysListenToBroadcast() {
-        return true;
+    public void onResume() {
+        if (!mRegistered) {
+           mManager.getContext().registerReceiver(mReceiver, DND_FILTER);
+           mRegistered = true;
+        }
+    }
+
+    @Override
+    public void onPause() {
+        mManager.getContext().unregisterReceiver(mReceiver);
+        mRegistered = false;
     }
 }

src/com/android/settings/dashboard/conditional/HotspotCondition.java

@@ -18,6 +18,7 @@ package com.android.settings.dashboard.conditional;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.graphics.drawable.Icon;
 import android.net.ConnectivityManager;
 import android.net.wifi.WifiConfiguration;
@@ -31,15 +32,19 @@ import com.android.settings.TetherSettings;
 import com.android.settings.Utils;
 import com.android.settingslib.RestrictedLockUtils;
 import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
-import com.android.settingslib.TetherUtil;
 
 public class HotspotCondition extends Condition {
 
     private final WifiManager mWifiManager;
+    private final Receiver mReceiver;
+
+    private static final IntentFilter WIFI_AP_STATE_FILTER =
+        new IntentFilter(WifiManager.WIFI_AP_STATE_CHANGED_ACTION);
 
     public HotspotCondition(ConditionManager manager) {
         super(manager);
         mWifiManager = mManager.getContext().getSystemService(WifiManager.class);
+        mReceiver = new Receiver();
     }
 
     @Override
@@ -49,8 +54,13 @@ public class HotspotCondition extends Condition {
     }
 
     @Override
-    protected Class<?> getReceiverClass() {
-        return Receiver.class;
+    protected BroadcastReceiver getReceiver() {
+        return mReceiver;
+    }
+
+    @Override
+    protected IntentFilter getIntentFilter() {
+        return WIFI_AP_STATE_FILTER;
     }
 
     @Override