Show mobile data RSSI for devices that support it.

The new test is more general, allowing mobile RSSI to be
shown on devices without voice telephony.

Bug: 7490266
Change-Id: Ib5b243c0d92e74fe4385989c3a6c16edd00a9ec9

Author: dsandler

packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettings.java

@@ -415,7 +415,7 @@ public void refreshView(QuickSettingsTileView view, State state) {
         });
         parent.addView(wifiTile);
 
-        if (mModel.deviceSupportsTelephony()) {
+        if (mModel.deviceHasMobileData()) {
             // RSSI
             QuickSettingsTileView rssiTile = (QuickSettingsTileView)
                     inflater.inflate(R.layout.quick_settings_tile, parent, false);

packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsModel.java

@@ -29,6 +29,7 @@
 import android.database.ContentObserver;
 import android.graphics.drawable.Drawable;
 import android.hardware.display.WifiDisplayStatus;
+import android.net.ConnectivityManager;
 import android.os.Handler;
 import android.os.UserHandle;
 import android.provider.Settings;
@@ -171,6 +172,8 @@ public void startObserving() {
     private final BugreportObserver mBugreportObserver;
     private final BrightnessObserver mBrightnessObserver;
 
+    private final boolean mHasMobileData;
+
     private QuickSettingsTileView mUserTile;
     private RefreshCallback mUserCallback;
     private UserState mUserState = new UserState();
@@ -249,6 +252,10 @@ public void onReceive(Context context, Intent intent) {
         mBrightnessObserver = new BrightnessObserver(mHandler);
         mBrightnessObserver.startObserving();
 
+        ConnectivityManager cm = (ConnectivityManager)
+                context.getSystemService(Context.CONNECTIVITY_SERVICE);
+        mHasMobileData = cm.isNetworkSupported(ConnectivityManager.TYPE_MOBILE);
+
         IntentFilter alarmIntentFilter = new IntentFilter();
         alarmIntentFilter.addAction(Intent.ACTION_ALARM_CHANGED);
         context.registerReceiver(mAlarmIntentReceiver, alarmIntentFilter);
@@ -403,22 +410,22 @@ public void onWifiSignalChanged(boolean enabled, int wifiSignalIconId,
         mWifiCallback.refreshView(mWifiTile, mWifiState);
     }
 
+    boolean deviceHasMobileData() {
+        return mHasMobileData;
+    }
+
     // RSSI
     void addRSSITile(QuickSettingsTileView view, RefreshCallback cb) {
         mRSSITile = view;
         mRSSICallback = cb;
         mRSSICallback.refreshView(mRSSITile, mRSSIState);
     }
-    boolean deviceSupportsTelephony() {
-        PackageManager pm = mContext.getPackageManager();
-        return pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY);
-    }
     // NetworkSignalChanged callback
     @Override
     public void onMobileDataSignalChanged(
             boolean enabled, int mobileSignalIconId, String signalContentDescription,
             int dataTypeIconId, String dataContentDescription, String enabledDesc) {
-        if (deviceSupportsTelephony()) {
+        if (deviceHasMobileData()) {
             // TODO: If view is in awaiting state, disable
             Resources r = mContext.getResources();
             mRSSIState.signalIconId = enabled && (mobileSignalIconId > 0)