add battery charging state

app/build.gradle

@@ -59,7 +59,7 @@ android {
 
     defaultConfig {
         applicationId "info.nightscout.androidaps"
-        minSdkVersion 21
+        minSdkVersion 23
         targetSdkVersion 25
         multiDexEnabled true
         versionCode 1500

app/src/main/java/info/nightscout/androidaps/events/EventChargingState.java

@@ -2,14 +2,12 @@ package info.nightscout.androidaps.events;
 
 public class EventChargingState {
 
-    boolean isCharging = false;
+    public boolean isCharging = false;
-    boolean isPlugged = false;
 
     public EventChargingState() {}
 
-    public EventChargingState(boolean isCharging, boolean isPlugged) {
+    public EventChargingState(boolean isCharging) {
         this.isCharging = isCharging;
-        this.isPlugged = isPlugged;
     }
 
 }

app/src/main/java/info/nightscout/androidaps/plugins/NSClientInternal/NSClientPlugin.java

@@ -7,6 +7,7 @@ import android.content.IntentFilter;
 import android.content.ServiceConnection;
 import android.net.ConnectivityManager;
 import android.net.wifi.WifiManager;
+import android.os.BatteryManager;
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.IBinder;
@@ -21,7 +22,6 @@ import org.slf4j.LoggerFactory;
 import java.util.ArrayList;
 import java.util.List;
 
-import info.nightscout.androidaps.BuildConfig;
 import info.nightscout.androidaps.Config;
 import info.nightscout.androidaps.Constants;
 import info.nightscout.androidaps.MainApp;
@@ -37,6 +37,7 @@ import info.nightscout.androidaps.plugins.NSClientInternal.events.EventNSClientN
 import info.nightscout.androidaps.plugins.NSClientInternal.events.EventNSClientStatus;
 import info.nightscout.androidaps.plugins.NSClientInternal.events.EventNSClientUpdateGUI;
 import info.nightscout.androidaps.plugins.NSClientInternal.services.NSClientService;
+import info.nightscout.androidaps.receivers.ChargingStateReceiver;
 import info.nightscout.androidaps.receivers.NetworkChangeReceiver;
 import info.nightscout.utils.SP;
 import info.nightscout.utils.ToastUtils;
@@ -60,12 +61,16 @@ public class NSClientPlugin extends PluginBase {
 
     public boolean paused = false;
     public boolean allowed = true;
+    public boolean allowedChargingsState = true;
+    public boolean allowedNetworkState = true;
     boolean autoscroll = true;
 
     public String status = "";
 
     public NSClientService nsClientService = null;
-    NetworkChangeReceiver networkChangeReceiver = new NetworkChangeReceiver();
+
+    private NetworkChangeReceiver networkChangeReceiver = new NetworkChangeReceiver();
+    private ChargingStateReceiver chargingStateReceiver = new ChargingStateReceiver();
 
     private NSClientPlugin() {
         super(new PluginDescription()
@@ -97,6 +102,12 @@ public class NSClientPlugin extends PluginBase {
         context.bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
         super.onStart();
 
+        registerReceivers();
+
+    }
+
+    protected void registerReceivers() {
+        Context context = MainApp.instance().getApplicationContext();
         // register NetworkChangeReceiver --> https://developer.android.com/training/monitoring-device-state/connectivity-monitoring.html
         // Nougat is not providing Connectivity-Action anymore ;-(
         context.registerReceiver(networkChangeReceiver,
@@ -104,9 +115,19 @@ public class NSClientPlugin extends PluginBase {
         context.registerReceiver(networkChangeReceiver,
                 new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION));
 
-        EventNetworkChange event = networkChangeReceiver.grabNetworkStatus(MainApp.instance().getApplicationContext());
+        EventNetworkChange event = networkChangeReceiver.grabNetworkStatus(context);
         if (event != null)
             MainApp.bus().post(event);
+
+        context.registerReceiver(chargingStateReceiver,
+                new IntentFilter(Intent.ACTION_POWER_CONNECTED));
+        context.registerReceiver(chargingStateReceiver,
+                new IntentFilter(Intent.ACTION_POWER_DISCONNECTED));
+
+        EventChargingState eventChargingState = chargingStateReceiver.grabChargingState(context);
+        if (eventChargingState != null)
+            MainApp.bus().post(eventChargingState);
+
     }
 
     @Override
@@ -115,6 +136,7 @@ public class NSClientPlugin extends PluginBase {
         Context context = MainApp.instance().getApplicationContext();
         context.unbindService(mConnection);
         context.unregisterReceiver(networkChangeReceiver);
+        context.unregisterReceiver(chargingStateReceiver);
     }
 
     private ServiceConnection mConnection = new ServiceConnection() {
@@ -141,16 +163,53 @@ public class NSClientPlugin extends PluginBase {
             EventNetworkChange event = networkChangeReceiver.grabNetworkStatus(MainApp.instance().getApplicationContext());
             if (event != null)
                 MainApp.bus().post(event);
+        } else if (ev.isChanged(R.string.key_ns_chargingonly)) {
+            EventChargingState event = chargingStateReceiver.grabChargingState(MainApp.instance().getApplicationContext());
+            if (event != null)
+                MainApp.bus().post(event);
         }
     }
 
     @Subscribe
     public void onStatusEvent(final EventChargingState ev) {
-        
+        boolean newChargingState = calculateStatus(ev);
+
+        if (newChargingState != allowedChargingsState) {
+            allowedChargingsState = newChargingState;
+            processStateChange();
+        }
     }
 
     @Subscribe
     public void onStatusEvent(final EventNetworkChange ev) {
+        boolean newNetworkState = calculateStatus(ev);
+
+        if (newNetworkState != allowedNetworkState) {
+            allowedNetworkState = newNetworkState;
+            processStateChange();
+        }
+    }
+
+    private void processStateChange() {
+        boolean newAllowedState =  allowedChargingsState && allowedNetworkState;
+        if (newAllowedState != allowed) {
+            allowed = newAllowedState;
+            MainApp.bus().post(new EventPreferenceChange(R.string.key_nsclientinternal_paused));
+        }
+    }
+
+    private boolean calculateStatus(final EventChargingState ev) {
+        boolean chargingOnly = SP.getBoolean(R.string.ns_chargingonly, false);
+
+        boolean newAllowedState = true;
+
+        if (!ev.isCharging && chargingOnly) newAllowedState = false;
+
+        return newAllowedState;
+    }
+
+
+    private boolean calculateStatus(final EventNetworkChange ev) {
         boolean wifiOnly = SP.getBoolean(R.string.key_ns_wifionly, false);
         String allowedSSIDs = SP.getString(R.string.key_ns_wifi_ssids, "");
         boolean allowRoaming = SP.getBoolean(R.string.key_ns_allowroaming, true);
@@ -162,10 +221,7 @@ public class NSClientPlugin extends PluginBase {
             newAllowedState = false;
         if (!allowRoaming && ev.roaming) newAllowedState = false;
 
-        if (newAllowedState != allowed) {
+        return newAllowedState;
-            allowed = newAllowedState;
-            MainApp.bus().post(new EventPreferenceChange(R.string.key_nsclientinternal_paused));
-        }
     }
 
     @Subscribe

app/src/main/java/info/nightscout/androidaps/receivers/ChargingStateReceiver.java

@@ -3,38 +3,30 @@ package info.nightscout.androidaps.receivers;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
-import android.net.ConnectivityManager;
-import android.net.NetworkInfo;
-import android.net.wifi.SupplicantState;
-import android.net.wifi.WifiInfo;
-import android.net.wifi.WifiManager;
 import android.os.BatteryManager;
-import android.os.PowerManager;
-import android.support.annotation.Nullable;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import info.nightscout.androidaps.MainApp;
 import info.nightscout.androidaps.events.EventChargingState;
-import info.nightscout.androidaps.events.EventNetworkChange;
 
 public class ChargingStateReceiver extends BroadcastReceiver {
-    private static Logger log = LoggerFactory.getLogger(ChargingStateReceiver.class);
 
     @Override
     public void onReceive(Context context, Intent intent) {
-        int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
+        EventChargingState event = grabChargingState(context);
-        boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING ||
-                status == BatteryManager.BATTERY_STATUS_FULL;
 
-        int chargePlug = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
-        boolean usbCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;
-        boolean acCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_AC;
-
-        EventChargingState event = new EventChargingState(isCharging, usbCharge || acCharge);
         if (event != null)
             MainApp.bus().post(event);
     }
 
+    public EventChargingState grabChargingState(Context context) {
+        BatteryManager bm = (BatteryManager) context.getSystemService(Context.BATTERY_SERVICE);
+
+        int status = bm.getIntProperty(BatteryManager.BATTERY_PROPERTY_STATUS);
+        boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING
+                || status == BatteryManager.BATTERY_STATUS_FULL;
+
+        EventChargingState event = new EventChargingState(isCharging);
+        return event;
+    }
+
 }

app/src/main/res/values/strings.xml

@@ -1019,8 +1019,10 @@
     <string name="key_ns_wifionly" translatable="false">ns_wifionly</string>
     <string name="key_ns_wifi_ssids" translatable="false">ns_wifi_ssids</string>
     <string name="key_ns_allowroaming" translatable="false">ns_allowroaming</string>
+    <string name="key_ns_chargingonly" translatable="false">ns_chargingonly</string>
     <string name="ns_wifionly">Use WiFi connection only</string>
     <string name="ns_wifi_ssids">WiFi SSID</string>
+    <string name="ns_chargingonly">Only if charging</string>
     <string name="connectionsettings_title">Connection settings</string>
     <string name="ns_wifi_allowedssids">Allowed SSIDs (semicolon separated)</string>
     <string name="ns_allowroaming">Allow connection in roaming</string>

app/src/main/res/xml/pref_nsclientinternal.xml

@@ -103,6 +103,11 @@
                 android:key="@string/key_ns_allowroaming"
                 android:title="@string/ns_allowroaming" />
 
+            <SwitchPreference
+                android:defaultValue="false"
+                android:key="@string/key_ns_chargingonly"
+                android:title="@string/ns_chargingonly" />
+
         </PreferenceScreen>
 
        <PreferenceScreen android:title="@string/advancedsettings_title">