Port Android battery status to Android 4.4 and earlier

* java/org/gnu/emacs/EmacsService.java (EmacsService)
(queryBattery19): New function.
(queryBattery): Call it on old systems.  Also, return AC line
status and temperature.
* lisp/battery.el (battery-android): Implement more format
directives.
* src/android.c (android_query_battery): Handle new status
fields.
* src/android.h (struct android_battery_state): Add `plugged'
and `temperature'.
* src/androidfns.c (Fandroid_query_battery): Return new fields.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/android.h b/src/android.h
index ed0089ad94e..450f3859df9 100644
--- a/src/android.h
+++ b/src/android.h
@@ -160,6 +160,18 @@ struct android_battery_state
           but is not charging either.
        1, if the battery state is unknown.  */
   int status;
+
+  /* The power source of the battery.  Value is:
+
+       0, if on battery power.
+       1, for line power.
+       8, for dock power.
+       2, for USB power.
+       4, for wireless power.  */
+  int plugged;
+
+  /* The temperature of the battery in 10 * degrees centigrade.  */
+  int temperature;
 };
 
 extern Lisp_Object android_browse_url (Lisp_Object);