refactor, reloadReactNative on android

AndroidE2E/app/src/androidTest/java/com/reactnativenavigation/e2e/androide2e/ApplicationLifecycleTest.java

 import android.net.Uri;
 import android.provider.Settings;
 import android.support.test.uiautomator.By;
+import android.view.KeyEvent;
 
 import org.junit.FixMethodOrder;
 import org.junit.Test;
 	@Test
 	public void _3_relaunchAfterClose() throws Exception {
 		launchTheApp();
+		assertMainShown();
+
 		elementByText("PUSH").click();
 		assertExists(By.text("Pushed Screen"));
 
 	@Test
 	public void _4_deviceOrientationDoesNotDestroyActivity() throws Exception {
 		launchTheApp();
+		assertMainShown();
 		elementByText("PUSH").click();
 		assertExists(By.text("Pushed Screen"));
 
 	@Test
 	public void _5_relaunchAfterActivityKilledBySystem() throws Exception {
 		launchTheApp();
+		assertMainShown();
 		elementByText("PUSH").click();
 		assertExists(By.text("Pushed Screen"));
 
 		assertMainShown();
 	}
 
+	@Test
+	public void _6_reloadReactNativeApp() throws Exception {
+		launchTheApp();
+		assertMainShown();
+		elementByText("PUSH").click();
+		assertExists(By.text("Pushed Screen"));
+		device().pressKeyCode(KeyEvent.KEYCODE_R);
+		device().pressKeyCode(KeyEvent.KEYCODE_R);
+		assertMainShown();
+	}
+
 	private void killAppSaveInstanceState_ByTogglingPermissions() throws Exception {
 		device().pressHome();
 

lib/android/app/src/main/java/com/reactnativenavigation/NavigationActivity.java

 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v7.app.AppCompatActivity;
+import android.view.KeyEvent;
+import android.widget.Toast;
 
 import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler;
 import com.reactnativenavigation.viewcontrollers.Navigator;
 		}
 	}
 
+	
+	@Override
+	public boolean onKeyMultiple(final int keyCode, final int repeatCount, final KeyEvent event) {
+		Toast.makeText(this, "onKeyMultiple", Toast.LENGTH_SHORT).show();
+		if (keyCode == KeyEvent.KEYCODE_R && repeatCount == 2) {
+			Toast.makeText(this, "RR!!!!", Toast.LENGTH_SHORT).show();
+			return true;
+		} else {
+			return super.onKeyMultiple(keyCode, repeatCount, event);
+		}
+	}
+
 	public Navigator getNavigator() {
 		return navigator;
 	}

lib/android/app/src/main/java/com/reactnativenavigation/viewcontrollers/IndexedStack.java → lib/android/app/src/main/java/com/reactnativenavigation/viewcontrollers/IdStack.java

 import java.util.HashMap;
 import java.util.Iterator;
 
-public class IndexedStack<E> implements Iterable<String> {
+public class IdStack<E> implements Iterable<String> {
 
 	private final ArrayDeque<String> deque = new ArrayDeque<>();
 	private final HashMap<String, E> map = new HashMap<>();

lib/android/app/src/main/java/com/reactnativenavigation/viewcontrollers/StackController.java

 import java.util.Collection;
 
 public class StackController extends ParentController {
-	private final IndexedStack<ViewController> stack = new IndexedStack<>();
+	private final IdStack<ViewController> stack = new IdStack<>();
 	private StackAnimator animator;
 
 	public StackController(final Activity activity, String id) {

lib/android/app/src/test/java/com/reactnativenavigation/viewcontrollers/IndexedStackTest.java → lib/android/app/src/test/java/com/reactnativenavigation/viewcontrollers/IdStackTest.java

 
 import static org.assertj.core.api.Java6Assertions.assertThat;
 
-public class IndexedStackTest extends BaseTest {
+public class IdStackTest extends BaseTest {
 
-	private IndexedStack<Integer> uut;
+	private IdStack<Integer> uut;
 
 	@Override
 	public void beforeEach() {
 		super.beforeEach();
-		uut = new IndexedStack<>();
+		uut = new IdStack<>();
 	}
 
 	@Test