SetupWizard: Fix status bar managing workflow

StatusBarManager uses tokens in binder connections to identify
disable records and queue each of them accordingly. New record creates
each time an application connects to StatusBarManager and tries to change
the state. New records don't activate until previous ones are destroyed.
Records can be destroyed either when app binder dies, or when the same
binder ticket reverts its previous changes.
To accomodate this behavior, StatusBarManager was moved to a static class
that initializes first when status bar gets disabled, and then gets destroyed
when status bar is re-enabled.
While we're at it, also fix race condition between main and exit activites
by moving status bar disabling code to the application class.

Change-Id: I3b33e628da1e1881181cbe665e6aaccee3dd19ef

src/org/lineageos/setupwizard/SetupWizardApp.java

@@ -19,6 +19,7 @@ package org.lineageos.setupwizard;
 
 
 import android.app.Application;
+import android.app.StatusBarManager;
 import android.os.Bundle;
 import android.os.Handler;
 import android.util.Log;
@@ -69,6 +70,8 @@ public class SetupWizardApp extends Application {
 
     public static final int RADIO_READY_TIMEOUT = 10 * 1000;
 
+    private static StatusBarManager sStatusBarManager;
+
     private boolean mIsRadioReady = false;
     private boolean mIgnoreSimLocale = false;
 
@@ -87,9 +90,14 @@ public class SetupWizardApp extends Application {
         PhoneMonitor.initInstance(this);
         SetupWizardUtils.disableComponentsForMissingFeatures(this);
         SetupWizardUtils.setMobileDataEnabled(this, false);
+        sStatusBarManager = SetupWizardUtils.disableStatusBar(this);
         mHandler.postDelayed(mRadioTimeoutRunnable, SetupWizardApp.RADIO_READY_TIMEOUT);
     }
 
+    public static StatusBarManager getStatusBarManager() {
+        return sStatusBarManager;
+    }
+
     public boolean isRadioReady() {
         return mIsRadioReady;
     }