From dd5b6d7dcc01939df82f989a12bf4b9282ae1b10 Mon Sep 17 00:00:00 2001
From: boltex <fmalboeuf@oceanex.com>
Date: Thu, 13 Sep 2018 09:30:43 -0400
Subject: [PATCH] Added support for android 6+ (sdk 23 +) by setting visibility
 every 10 seconds to support GPS while in background and preventing idle mode.

---
 src/android/PowerManagement.java | 56 ++++++++++++++++++++++++++++++--
 1 file changed, 54 insertions(+), 2 deletions(-)

diff --git a/src/android/PowerManagement.java b/src/android/PowerManagement.java
index 3348db0..7bda6d7 100644
--- a/src/android/PowerManagement.java
+++ b/src/android/PowerManagement.java
@@ -25,6 +25,13 @@ import org.json.JSONException;
 
 import android.content.Context;
 import android.os.PowerManager;
+import android.os.Build;
+import android.os.Handler;
+import android.app.PendingIntent;
+import android.content.Intent;
+import java.lang.Runnable;
+import android.view.View;
+
 import android.util.Log;
 
 import org.apache.cordova.CordovaWebView;
@@ -43,14 +50,58 @@ public class PowerManagement extends CordovaPlugin {
 	private PowerManager powerManager = null;
 	private boolean releaseOnPause = true;
 
+	private Handler handler;
+	private PendingIntent wakeupIntent;
+	private CordovaWebView webView;
+
+	private final Runnable heartbeat = new Runnable() {
+	    public void run() {
+	        try {
+	        	//Log.d("PowerManagementPlugin", "About to declare ourselves VISIBLE");
+	        	webView.getEngine().getView().dispatchWindowVisibilityChanged(View.VISIBLE);
+
+	        	// if sdk is 23 (android 6) or greater
+				if(android.os.Build.VERSION.SDK_INT > 22){
+
+		            if (wakeLock != null && powerManager != null && powerManager.isDeviceIdleMode()) {
+		                //Log.d("PowerManagementPlugin", "Poking location service");
+		                try {
+		                    wakeupIntent.send();
+		                } catch (SecurityException e) {
+		                    Log.d("PowerManagementPlugin", "SecurityException : Heartbeat location manager keep-alive failed");
+		                } catch (PendingIntent.CanceledException e) {
+		                    Log.d("PowerManagementPlugin", "PendingIntent.CanceledException : Heartbeat location manager keep-alive failed");
+		                }
+		            }
+
+		        }
+
+	        } finally {
+	            if (handler != null) {
+	                handler.postDelayed(this, 10000);
+	            }
+	        }
+	    }
+	};
+
 	/**
 	 * Fetch a reference to the power-service when the plugin is initialized
 	 */
 	@Override
-	public void initialize(CordovaInterface cordova, CordovaWebView webView) {
-		super.initialize(cordova, webView);
+	public void initialize(CordovaInterface cordova, CordovaWebView webViewPara) {
+
+		Context context = cordova.getActivity().getApplicationContext();
+
+		this.webView = webViewPara;
+
+		super.initialize(cordova, webViewPara);
 
 		this.powerManager = (PowerManager) cordova.getActivity().getSystemService(Context.POWER_SERVICE);
+
+		handler = new Handler();
+	    wakeupIntent = PendingIntent.getBroadcast( context , 0,
+	        new Intent("com.android.internal.location.ALARM_WAKEUP"), 0);
+
 	}
 
 	@Override
@@ -66,6 +117,7 @@ public class PowerManagement extends CordovaPlugin {
 				if( args.length() > 0 && args.getBoolean(0) ) {
 					Log.d("PowerManagementPlugin", "Partial wake lock" );
 					result = this.acquire( PowerManager.PARTIAL_WAKE_LOCK );
+					handler.postDelayed(heartbeat, 10000);
 				}
 				else {
 					result = this.acquire( PowerManager.FULL_WAKE_LOCK );