Is it possible to access Context, Application, Activity anywhere statically?

Question

So the question is, is it really possible to access Context, Application and specially Activity anywhere. Like as in other static class methods without passing parameters?

Eg:

public static class YOUR_CLASS{

    public static void YOUR_FUNCTION(){
        Application app = /* GET APPLICATION */;
        Activity act = /* GET ACTIVITY */;
        Context c = /* GET CONTEXT */;

        // USE THEM
    }
}

Is that even possible? If you run a plain old java `main`, what's the current `Activity` supposed to be? — f1sh, Jul 21 '22 at 09:12
There's another thing called ANDROID JAVA CONSOLE apart than JAVA CONSOLE. the ANDROID JAVA CONSOLE is able to access ANDROID api because it runs in Android. An example is AIDE ;-) — DiLDoST, Jul 21 '22 at 09:14
Further than that. It's just an example of static not really a console program — DiLDoST, Jul 21 '22 at 09:15
**what's the current ```Activity``` supposed to be?** In AIDE it's the console activity which shows result. And as am telling again, it's just an example — DiLDoST, Jul 21 '22 at 09:19

DiLDoST · Accepted Answer · 2022-07-21T09:21:15.250

Yes it's possible like this:

public static void YOUR_FUNCTION(){
    Application app = getApplication();
    Activity act = getActivity();
    Context c = /* app or act, both are Contexts so u can use them as needed */;

    // USE THEM
}

public static Activity getActivity() {
    try{
        Class activityThreadClass = Class.forName("android.app.ActivityThread");
        Object activityThread = activityThreadClass.getMethod("currentActivityThread").invoke(null);
        Field activitiesField = activityThreadClass.getDeclaredField("mActivities");
        activitiesField.setAccessible(true);

        Map<Object, Object> activities = (Map<Object, Object>) activitiesField.get(activityThread);

        for (Object activityRecord : activities.values()) {
            try
            {
                Class activityRecordClass = activityRecord.getClass();
                Field pausedField = activityRecordClass.getDeclaredField("paused");
                pausedField.setAccessible(true);

                boolean paused=pausedField.getBoolean(activityRecord);

                Field activityField = activityRecordClass.getDeclaredField("activity");
                activityField.setAccessible(true);
                Activity activity = (Activity) activityField.get(activityRecord);

                if(!paused){
                    return activity;
                }
            }
            catch (Throwable e)
            {}
        }
    }catch (Throwable e)
    {}
    return null;
}

public static Application getApplicationContext(){
    try
    {
        Application i=(Application)Class.forName("android.app.ActivityThread")
            .getMethod("currentApplication").invoke(null, null);
            
        if(i==null){
            throw new NullPointerException();
        }
        return i;
    }
    catch (Throwable e)
    {
        try
        {
            Application i=(Application)Class.forName("android.app.AppGlobals")
                .getMethod("getInitialApplication").invoke(null, null);
            if(i==null){
                throw new NullPointerException();
            }
            return i;
        }
        catch (Throwable e2)
        {
            return null;
        }
    }
}

Is it possible to access Context, Application, Activity anywhere statically?

1 Answers1