feat(android): expose base context (#13390)

* feat(android): expose base context

* onDestoy -> null

* move to TiBaseActivity

android/titanium/src/java/org/appcelerator/titanium/TiBaseActivity.java

@@ -99,7 +99,7 @@ public abstract class TiBaseActivity extends AppCompatActivity implements TiActi
 	private Intent launchIntent = null;
 	private TiActionBarStyleHandler actionBarStyleHandler;
 	private TiActivitySafeAreaMonitor safeAreaMonitor;
-
+	private Context baseContext;
 	/**
 	 * Callback to be invoked when the TiBaseActivity.onRequestPermissionsResult() has been called,
 	 * providing the results of a requestPermissions() call. Instances of this interface are to
@@ -631,6 +631,7 @@ public void setContentView(View view, LayoutParams params)
 	@Override
 	protected void attachBaseContext(Context newBase)
 	{
+		baseContext = newBase;
 		super.attachBaseContext(TiLocaleManager.getLocalizedContext(newBase));
 	}
 
@@ -1618,6 +1619,10 @@ protected void onDestroy()
 			activityProxy = null;
 		}
 
+		if (baseContext != null) {
+			baseContext = null;
+		}
+
 		// Remove this activity from the app-wide Titanium UI stack.
 		TiApplication.removeFromActivityStack(this);
 
@@ -1851,4 +1856,9 @@ public void removeCustomInsetsProvider(TiInsetsProvider provider)
 			this.safeAreaMonitor.removeInsetsProvider(provider);
 		}
 	}
+
+	public Context getBaseContext()
+	{
+		return baseContext;
+	}
 }