updating powermanagement plugin for use with android

README.md

@@ -7,8 +7,9 @@ It should be used for applications which keep running for a long time without an
 
 For details on power functionality see:
 
-* WindowsPhone: [UserIdleDetectionMode](http://msdn.microsoft.com/en-US/library/windowsphone/develop/microsoft.phone.shell.phoneapplicationservice.useridledetectionmode%28v=vs.105%29.aspx)
+* Android: [PowerManager](http://developer.android.com/reference/android/os/PowerManager.html)
 * iOS: [idleTimerDisabled](http://developer.apple.com/library/ios/documentation/UIKit/Reference/UIApplication_Class/Reference/Reference.html#//apple_ref/occ/instp/UIApplication/idleTimerDisabled)
+* WindowsPhone: [UserIdleDetectionMode](http://msdn.microsoft.com/en-US/library/windowsphone/develop/microsoft.phone.shell.phoneapplicationservice.useridledetectionmode%28v=vs.105%29.aspx)
 
 Installation
 ---------

plugin.xml

@@ -44,4 +44,19 @@
         <header-file src="src/ios/PowerManagement.h" />
 	    <source-file src="src/ios/PowerManagement.m" />   	
     </platform>
+    
+    <!-- android -->
+    <platform name="android">
+        <config-file target="res/xml/config.xml" parent="/*">
+            <feature name="PowerManagement" >
+                <param name="android-package" value="org.apache.cordova.plugin.PowerManagement"/>
+            </feature>
+        </config-file>
+
+        <config-file target="AndroidManifest.xml" parent="/*">
+            <uses-permission android:name="android.permission.WAKE_LOCK" />
+        </config-file>
+
+	<source-file src="src/android/PowerManagement.java" target-dir="src/at/gofg/sportscomputer/" />
+    </platform>
 </plugin>

src/android/PowerManagement.java

@@ -0,0 +1,150 @@
+/*
+   Copyright 2011-2013 Wolfgang Koller - http://www.gofg.at/
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+/**
+ * Cordova (Android) plugin for accessing the power-management functions of the device
+ * @author Wolfgang Koller <viras@users.sourceforge.net>
+ */
+package at.gofg.sportscomputer;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+
+import android.content.Context;
+import android.os.PowerManager;
+import android.util.Log;
+
+import org.apache.cordova.CordovaWebView;
+import org.apache.cordova.CallbackContext;
+import org.apache.cordova.CordovaInterface;
+import org.apache.cordova.CordovaPlugin;
+import org.apache.cordova.PluginResult;
+import org.apache.cordova.PluginResult.Status;
+
+/**
+ * Plugin class which does the actual handling
+ */
+public class PowerManagement extends CordovaPlugin {
+	// As we only allow one wake-lock, we keep a reference to it here
+	private PowerManager.WakeLock wakeLock = null;
+	private PowerManager powerManager = null;
+
+	/**
+	 * Fetch a reference to the power-service when the plugin is initialized
+	 */
+	@Override
+	public void initialize(CordovaInterface cordova, CordovaWebView webView) {
+		super.initialize(cordova, webView);
+		
+		this.powerManager = (PowerManager) cordova.getActivity().getSystemService(Context.POWER_SERVICE);
+	}
+	
+	@Override
+	public boolean execute(String action, JSONArray args,
+			CallbackContext callbackContext) throws JSONException {
+
+		PluginResult result = null;
+		Log.d("PowerManagementPlugin", "Plugin execute called - " + this.toString() );
+		Log.d("PowerManagementPlugin", "Action is " + action );
+		
+		try {
+			if( action.equals("acquire") ) {
+					if( args.length() > 0 && args.getBoolean(0) ) {
+						Log.d("PowerManagementPlugin", "Only dim lock" );
+						result = this.acquire( PowerManager.SCREEN_DIM_WAKE_LOCK );
+					}
+					else {
+						result = this.acquire( PowerManager.FULL_WAKE_LOCK );
+					}
+			}
+			else if( action.equals("release") ) {
+				result = this.release();
+			}
+		}
+		catch( JSONException e ) {
+			result = new PluginResult(Status.JSON_EXCEPTION, e.getMessage());
+		}
+		
+		callbackContext.sendPluginResult(result);
+		return true;
+	}
+	
+	/**
+	 * Acquire a wake-lock
+	 * @param p_flags Type of wake-lock to acquire
+	 * @return PluginResult containing the status of the acquire process
+	 */
+	private PluginResult acquire( int p_flags ) {
+		PluginResult result = null;
+		
+		if (this.wakeLock == null) {
+			this.wakeLock = this.powerManager.newWakeLock(p_flags, "PowerManagementPlugin");
+			try {
+				this.wakeLock.acquire();
+				result = new PluginResult(PluginResult.Status.OK);
+			}
+			catch( Exception e ) {
+				this.wakeLock = null;
+				result = new PluginResult(PluginResult.Status.ERROR,"Can't acquire wake-lock - check your permissions!");
+			}
+		}
+		else {
+			result = new PluginResult(PluginResult.Status.ILLEGAL_ACCESS_EXCEPTION,"WakeLock already active - release first");
+		}
+		
+		return result;
+	}
+	
+	/**
+	 * Release an active wake-lock
+	 * @return PluginResult containing the status of the release process
+	 */
+	private PluginResult release() {
+		PluginResult result = null;
+		
+		if( this.wakeLock != null ) {
+			this.wakeLock.release();
+			this.wakeLock = null;
+			
+			result = new PluginResult(PluginResult.Status.OK, "OK");
+		}
+		else {
+			result = new PluginResult(PluginResult.Status.ILLEGAL_ACCESS_EXCEPTION, "No WakeLock active - acquire first");
+		}
+		
+		return result;
+	}
+	
+	/**
+	 * Make sure any wakelock is released if the app goes into pause
+	 */
+	@Override
+	public void onPause(boolean multitasking) {
+		if( this.wakeLock != null ) this.wakeLock.release();
+
+		super.onPause(multitasking);
+	}
+	
+	/**
+	 * Make sure any wakelock is acquired again once we resume
+	 */
+	@Override
+	public void onResume(boolean multitasking) {
+		if( this.wakeLock != null ) this.wakeLock.acquire();
+
+		super.onResume(multitasking);
+	}
+}