public static ActivitygetActivity() {
Class activityThreadClass =null;
? ? try {
activityThreadClass = Class.forName("android.app.ActivityThread");
? ? ? ? Object activityThread = activityThreadClass.getMethod("currentActivityThread").invoke(null);
? ? ? ? Field activitiesField = activityThreadClass.getDeclaredField("mActivities");
? ? ? ? activitiesField.setAccessible(true);
? ? ? ? Map activities = (Map) activitiesField.get(activityThread);
? ? ? ? for (Object activityRecord : activities.values()) {
Class activityRecordClass = activityRecord.getClass();
? ? ? ? ? ? Field pausedField = activityRecordClass.getDeclaredField("paused");
? ? ? ? ? ? pausedField.setAccessible(true);
? ? ? ? ? ? if (!pausedField.getBoolean(activityRecord)) {
Field activityField = activityRecordClass.getDeclaredField("activity");
? ? ? ? ? ? ? ? activityField.setAccessible(true);
? ? ? ? ? ? ? ? Activity activity = (Activity) activityField.get(activityRecord);
? ? ? ? ? ? ? ? return activity;
? ? ? ? ? ? }
}
}catch (ClassNotFoundException e) {
e.printStackTrace();
? ? }catch (NoSuchMethodException e) {
e.printStackTrace();
? ? }catch (IllegalAccessException e) {
e.printStackTrace();
? ? }catch (InvocationTargetException e) {
e.printStackTrace();
? ? }catch (NoSuchFieldException e) {
e.printStackTrace();
? ? }
return null;
}
