Incompatiblity with older android versions

It looks like since this commit here (6b522e9832ba2dcd40b3820d9900db07a29b8aa0), some specific java features that are only enabled in android 7 and 8 were added (like Lambdas). This breaks the plugin on apps that still support android 6.

Would it be possible to amend the lambdas and other android 7 and 8 specific features to keep compatibility with android 6?

Here’s an example of some of the build errors:

 /Users/buddy.reno/webapps/tdrs-app/tdrs-ionic-app/platforms/android/src/de/appplant/cordova/plugin/background/BackgroundMode.java:96: error: strings in switch are not supported in -source 1.6
[cordova]          switch (action)
[cordova]                 ^
[cordova]    (use -source 7 or higher to enable strings in switch)

[cordova]  /Users/buddy.reno/webapps/tdrs-app/tdrs-ionic-app/platforms/android/src/de/appplant/cordova/plugin/background/BackgroundModeExt.java:260: error: method references are not supported in -source 1.6
[cordova]                  activity.runOnUiThread(dialog::show);
[cordova]                                                 ^
[cordova]    (use -source 8 or higher to enable method references)

[cordova]  /Users/buddy.reno/webapps/tdrs-app/tdrs-ionic-app/platforms/android/src/de/appplant/cordova/plugin/background/BackgroundModeExt.java:242: error: lambda expressions are not supported in -source 1.6
[cordova]                  dialog.setPositiveButton(ok, (o, d) -> activity.startActivity(intent));
[cordova]                                                      ^
[cordova]    (use -source 8 or higher to enable lambda expressions)

[cordova]  /Users/buddy.reno/webapps/tdrs-app/tdrs-ionic-app/platforms/android/src/de/appplant/cordova/plugin/background/BackgroundMode.java:295: error: lambda expressionsare not supported in -source 1.6
[cordova]          cordova.getActivity().runOnUiThread(() -> webView.loadUrl("javascript:" + js));
[cordova]                                                 ^
[cordova]    (use -source 8 or higher to enable lambda expressions)

[boedy]

Feel free to fork my fork. Adds support for older Cordova versions.

[debugger200]

Still i’m facing the same issue in Cordova-Android 6.4.0. The automated builds won’t work with the above fix. is there any thing we can do now? if we don’t use the URL (https://github.com/katzer/cordova-plugin-background-mode.git) to install this plugin then the plugin works fine in Android but iOS build is crashed when open the app, might be due to a key change done in this plugin a year ago.

Now using this URL the plugin works fine in iOS but android build is not passing. Please let us know if we can make some workaround to both platform with a fix?