Immersive Mode not working after onWindowFocusChanged()

In AndroidApplication.java:

    protected void hideStatusBar (boolean hide) {
        if (!hide || getVersion() < 11) return;

        View rootView = getWindow().getDecorView();

        try {
            Method m = View.class.getMethod("setSystemUiVisibility", int.class);
            if (getVersion() <= 13) m.invoke(rootView, 0x0);
            m.invoke(rootView, 0x1);
        } catch (Exception e) {
            log("AndroidApplication", "Can't hide status bar", e);
        }
    }

    @Override
    public void onWindowFocusChanged (boolean hasFocus) {
        super.onWindowFocusChanged(hasFocus);
        useImmersiveMode(this.useImmersiveMode);
        hideStatusBar(this.hideStatusBar);
        if (hasFocus) {
            this.wasFocusChanged = 1;
            if (this.isWaitingForAudio) {
                this.audio.resume();
                this.isWaitingForAudio = false;
            }
        } else {
            this.wasFocusChanged = 0;
        }
    }

    @TargetApi(19)
    @Override
    public void useImmersiveMode (boolean use) {
        if (!use || getVersion() < Build.VERSION_CODES.KITKAT) return;

        View view = getWindow().getDecorView();
        try {
            Method m = View.class.getMethod("setSystemUiVisibility", int.class);
            int code = View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_FULLSCREEN
                | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
            m.invoke(view, code);
        } catch (Exception e) {
            log("AndroidApplication", "Can't set immersive mode", e);
        }
    }

Method onWindowFocusChanged() contains a bug, useImmersiveMode() should be executed after hideStatusBar() and not before. As it is now, hideStatusBar() overwrites the changes to SystemUiVisibility done by useImmersiveMode(), and this makes Immersive Mode not working after a call to onWindowFocusChanged()

[FlorentMasson]

I struggled a while with this immersive mode, which was working randomly, especially on slow devices. I discovered this stackoverflow answer which refers to a google sample The setSystemUiVisibility call should be manager by a handler and delayed by 300ms. Also I think hideStatusBar() and useImmersive() calls should be merged in a single setSystemUiVisibility() call, because otherwise, on focus change, the status bar gets shown for a very short time (which causes a very unpleasant blink effect). I finally set config.hideStatusBar to false.

[shatterblast]

It works for me. If no one has a complaint, can we close this, please?