Display app stats for location permission

Bug: 120221631 Test: manually Change-Id: I53f43079807759c50eeb62029bb0d8d1f84e1118
2018-12-11 13:50:34 -08:00
parent 811d95c373
commit 3da8f8d31d
8 changed files with 226 additions and 29 deletions
--- a/src/com/android/settings/location/TopLevelLocationPreferenceController.java
+++ b/src/com/android/settings/location/TopLevelLocationPreferenceController.java
@@ -0,0 +1,99 @@
+package com.android.settings.location;
+
+import static android.Manifest.permission.ACCESS_BACKGROUND_LOCATION;
+import static android.Manifest.permission.ACCESS_COARSE_LOCATION;
+import static android.Manifest.permission.ACCESS_FINE_LOCATION;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.location.LocationManager;
+import android.permission.RuntimePermissionPresenter;
+
+import androidx.preference.Preference;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settingslib.core.lifecycle.LifecycleObserver;
+import com.android.settingslib.core.lifecycle.events.OnStart;
+import com.android.settingslib.core.lifecycle.events.OnStop;
+
+import java.util.Arrays;
+import java.util.Collections;
+
+public class TopLevelLocationPreferenceController extends BasePreferenceController implements
+        LifecycleObserver, OnStart, OnStop {
+    private static final IntentFilter INTENT_FILTER_LOCATION_MODE_CHANGED =
+            new IntentFilter(LocationManager.MODE_CHANGED_ACTION);
+    private final LocationManager mLocationManager;
+    /** Total number of apps that has location permission. */
+    private int mNumTotal = -1;
+    private BroadcastReceiver mReceiver;
+    private Preference mPreference;
+
+    public TopLevelLocationPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+        mLocationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        if (mLocationManager.isLocationEnabled()) {
+            if (mNumTotal == -1) {
+                return mContext.getString(R.string.location_settings_loading_app_permission_stats);
+            }
+            return mContext.getResources().getQuantityString(
+                    R.plurals.location_settings_summary_location_on,
+                    mNumTotal, mNumTotal);
+        } else {
+            return mContext.getString(R.string.location_settings_summary_location_off);
+        }
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        super.updateState(preference);
+        mPreference = preference;
+        refreshSummary(preference);
+        // Bail out if location has been disabled.
+        if (!mLocationManager.isLocationEnabled()) {
+            return;
+        }
+        RuntimePermissionPresenter.getInstance(mContext).countPermissionApps(
+                Arrays.asList(ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION), false, false,
+                (numApps) -> {
+                    mNumTotal = numApps;
+                    refreshSummary(preference);
+                }, null);
+    }
+
+    @Override
+    public void onStart() {
+        if (mReceiver == null) {
+            mReceiver = new BroadcastReceiver() {
+                @Override
+                public void onReceive(Context context, Intent intent) {
+                    refreshLocationMode();
+                }
+            };
+        }
+        mContext.registerReceiver(mReceiver, INTENT_FILTER_LOCATION_MODE_CHANGED);
+        refreshLocationMode();
+    }
+
+    @Override
+    public void onStop() {
+        mContext.unregisterReceiver(mReceiver);
+    }
+
+    private void refreshLocationMode() {
+        // 'null' is checked inside updateState(), so no need to check here.
+        updateState(mPreference);
+    }
+}