Fix app freeze on iOS using wkwebview-engine

Author: katzer

CHANGELOG.md

@@ -1,4 +1,8 @@
 ## ChangeLog
+#### Version 0.7.2 (02.02.2017)
+- Fixed app freeze on iOS using wkwebview-engine
+- Websocket sample in SampleApp
+
 #### Version 0.7.1 (30.01.2017)
 - Bug fixes for iOS9 and Android
 - Allow app to be excluded from recent list on Android

README.md

@@ -43,8 +43,6 @@ Or install from local source:
 
     $ cordova plugin add cordova-plugin-background-mode --searchpath <path>
 
-__Note:__ In combination with the `cordova-plugin-wkwebview-engine` plugin the UIBackgroundModes section added by the plugin inside the *-Info.plist can be removed. That might increase the chance to submit the app to the app store.
-
 
 ## Usage
 The plugin creates the object `cordova.plugins.backgroundMode` and is accessible after the *deviceready* event has been fired.
@@ -71,8 +69,6 @@ cordova.plugins.backgroundMode.disable();
 cordova.plugins.backgroundMode.setEnabled(false);
 ```
 
-__Note:__ By using `wkwebview-engine` on iOS, the plugin is enabled by default and cannot be disabled.
-
 ### Check if running in background
 Once the plugin has been enabled and the app has entered the background, the background mode becomes active.
 

src/ios/APPBackgroundMode.m

@@ -50,7 +50,7 @@ + (void) load
  */
 - (void) pluginInitialize
 {
-    enabled = [self.class isRunningWebKit];
+    enabled = NO;
     [self configureAudioPlayer];
     [self configureAudioSession];
     [self observeLifeCycle];
@@ -74,9 +74,6 @@ - (void) observeLifeCycle
                          name:UIApplicationWillEnterForegroundNotification
                        object:nil];
 
-    if ([self.class isRunningWebKit])
-        return;
-
         [listener addObserver:self
                      selector:@selector(handleAudioSessionInterruption:)
                          name:AVAudioSessionInterruptionNotification
@@ -105,7 +102,7 @@ - (void) enable:(CDVInvokedUrlCommand*)command
  */
 - (void) disable:(CDVInvokedUrlCommand*)command
 {
-    if (!enabled || [self.class isRunningWebKit])
+    if (!enabled)
         return;
 
     enabled = NO;
@@ -124,10 +121,7 @@ - (void) keepAwake
     if (!enabled)
         return;
 
-    if (![self.class isRunningWebKit]) {
-        [audioPlayer play];
-    }
-
+    [audioPlayer play];
     [self fireEvent:kAPPBackgroundEventActivate];
 }
 
@@ -140,7 +134,7 @@ - (void) stopKeepingAwake
         NSLog(@"BackgroundMode: On simulator apps never pause in background!");
     }
 
-    if (audioPlayer.isPlaying || [self.class isRunningWebKit]) {
+    if (audioPlayer.isPlaying) {
         [self fireEvent:kAPPBackgroundEventDeactivate];
     }
 
@@ -173,9 +167,6 @@ - (void) configureAudioSession
     AVAudioSession* session = [AVAudioSession
                                sharedInstance];
 
-    if ([self.class isRunningWebKit])
-        return;
-
     // Don't activate the audio session yet
     [session setActive:NO error:NULL];
 
@@ -275,6 +266,9 @@ + (void) swizzleWKWebViewEngine
         [obj setValue:[NSNumber numberWithBool:YES]
                forKey:[APPBackgroundMode wkProperty]];
 
+        [obj setValue:[NSNumber numberWithBool:NO]
+               forKey:@"_requiresUserActionForMediaPlayback"];
+
         return obj;
     }
     SwizzleSelectorWithBlock_End;

www/background-mode.js

@@ -341,8 +341,9 @@ exports.pluginInitialize = function () {
     this._isAndroid = device.platform.match(/^android|amazon/i) !== null;
     this.setDefaults({});
 
-    if (device.platform == 'browser' || window.webkit !== undefined) {
+    if (device.platform == 'browser') {
         this.enable();
+        this._isEnabled = true;
     }
 
     this._isActive  = this._isActive || device.platform == 'browser';