android: fixed application lifecycle

playground/android/app/src/androidTest/java/com/reactnativenavigation/playground/ApplicationLifecycleTest.java

 
     @Before
     public void beforeEach() {
+        reactIdlingResource.start();
         Espresso.registerIdlingResources(reactIdlingResource);
     }
 
     @After
     public void afterEach() {
+        uiDevice().waitForIdle();
+        reactIdlingResource.stop();
         Espresso.unregisterIdlingResources(reactIdlingResource);
     }
 
     }
 
     @Test
-    public void _2_relaunchFromBackground() throws Exception {
+    public void _2_RelaunchFromBackground() throws Exception {
         rule.launchActivity(null);
+
         onView(withText("React Native Navigation!")).check(matches(isDisplayed()));
+        uiDevice().waitForIdle();
 
         uiDevice().pressHome();
         uiDevice().pressRecentApps();
         uiDevice().findObject(new UiSelector().text("Playground")).click();
+        uiDevice().waitForIdle();
 
         onView(withText("React Native Navigation!")).check(matches(isDisplayed()));
     }
 
     @Test
-    public void _3_relaunchAfterClose() throws Exception {
+    public void _3_RelaunchAfterClose() throws Exception {
         rule.launchActivity(null);
+        uiDevice().waitForIdle();
+
         uiDevice().pressBack();
+        uiDevice().waitForIdle();
+
         rule.launchActivity(null);
+        uiDevice().waitForIdle();
+
         onView(withText("React Native Navigation!")).check(matches(isDisplayed()));
     }
 }
-//    xdescribe('android application lifecycle', () => {
-////launch, pause, and resume
-//
-//        it('launch already running in background', () => {
-//        //
-//        });
-//
 //        it('launch after activity killed by system', () => {
 //        //
 //        });
 //
-//        it('launch and ask react overlay permissions', () => {
-//        //
-//        });
-//
 //        it('launch after reactContext killed by system', () => {
 //        //
 //        });

playground/android/app/src/androidTest/java/com/reactnativenavigation/playground/ReactIdlingResource.java

     private ResourceCallback callback;
     private AtomicBoolean registered = new AtomicBoolean(false);
     private AtomicBoolean bridgeIdle = new AtomicBoolean(false);
+    private AtomicBoolean shouldRun = new AtomicBoolean(false);
 
     ReactIdlingResource() {
+    }
+
+    public void start() {
+        shouldRun.set(true);
         UiThread.postDelayed(new Runnable() {
             @Override
             public void run() {
-                if (!isIdleNow()) {
-                    UiThread.postDelayed(this, 10);
+                if (shouldRun.get()) {
+                    isIdleNow();
+                    UiThread.postDelayed(this, 100);
                 }
             }
-        }, 10);
+        }, 100);
+    }
+
+    public void stop() {
+        shouldRun.set(false);
+        ReactNativeHost host = NavigationApplication.instance.getReactNativeHost();
+        if (host != null && host.getReactInstanceManager().getCurrentReactContext() != null)
+            host.getReactInstanceManager().getCurrentReactContext().getCatalystInstance().removeBridgeIdleDebugListener(this);
     }
 
 

playground/android/app/src/main/AndroidManifest.xml

         android:theme="@style/AppTheme">
         <activity
             android:name=".MainActivity"
-            android:label="@string/app_name">
+            android:label="@string/app_name"
+            android:launchMode="singleTask">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />

playground/android/app/src/main/java/com/reactnativenavigation/playground/MainActivity.java

 import com.reactnativenavigation.NavigationActivity;
 
 public class MainActivity extends NavigationActivity {
-
 }