com.facebook.react.bridge.JavaScriptExecutorFactory#com.facebook.react.common.LifecycleState源码实例Demo

private void tearDownReactContext(ReactContext reactContext) {
  Log.d(ReactConstants.TAG, "ReactInstanceManager.tearDownReactContext()");
  UiThreadUtil.assertOnUiThread();
  if (mLifecycleState == LifecycleState.RESUMED) {
    reactContext.onHostPause();
  }

  synchronized (mAttachedRootViews) {
    for (ReactRootView rootView : mAttachedRootViews) {
      rootView.removeAllViews();
      rootView.setId(View.NO_ID);
    }
  }

  reactContext.destroy();
  mDevSupportManager.onReactInstanceDestroyed(reactContext);
  mMemoryPressureRouter.removeMemoryPressureListener(reactContext.getCatalystInstance());
}
 

protected ReactInstanceManager createReactInstanceManager() {
  ReactMarker.logMarker(ReactMarkerConstants.BUILD_REACT_INSTANCE_MANAGER_START);
  ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
    .setApplication(mApplication)
    .setJSMainModulePath(getJSMainModuleName())
    .setUseDeveloperSupport(getUseDeveloperSupport())
    .setRedBoxHandler(getRedBoxHandler())
    .setJavaScriptExecutorFactory(getJavaScriptExecutorFactory())
    .setUIImplementationProvider(getUIImplementationProvider())
    .setJSIModulesPackage(getJSIModulePackage())
    .setInitialLifecycleState(LifecycleState.BEFORE_CREATE);

  for (ReactPackage reactPackage : getPackages()) {
    builder.addPackage(reactPackage);
  }

  String jsBundleFile = getJSBundleFile();
  if (jsBundleFile != null) {
    builder.setJSBundleFile(jsBundleFile);
  } else {
    builder.setBundleAssetName(Assertions.assertNotNull(getBundleAssetName()));
  }
  ReactInstanceManager reactInstanceManager = builder.build();
  ReactMarker.logMarker(ReactMarkerConstants.BUILD_REACT_INSTANCE_MANAGER_END);
  return reactInstanceManager;
}
 

/**
 * Start a JS task. Handles invoking {@link AppRegistry#startHeadlessTask} and notifying
 * listeners.
 *
 * @return a unique id representing this task instance.
 */
public synchronized int startTask(final HeadlessJsTaskConfig taskConfig) {
  UiThreadUtil.assertOnUiThread();
  ReactContext reactContext = Assertions.assertNotNull(
    mReactContext.get(),
    "Tried to start a task on a react context that has already been destroyed");
  if (reactContext.getLifecycleState() == LifecycleState.RESUMED &&
    !taskConfig.isAllowedInForeground()) {
    throw new IllegalStateException(
      "Tried to start task " + taskConfig.getTaskKey() +
        " while in foreground, but this is not allowed.");
  }
  final int taskId = mLastTaskId.incrementAndGet();
  mActiveTasks.add(taskId);
  reactContext.getJSModule(AppRegistry.class)
    .startHeadlessTask(taskId, taskConfig.getTaskKey(), taskConfig.getData());
  if (taskConfig.getTimeout() > 0) {
    scheduleTaskTimeout(taskId, taskConfig.getTimeout());
  }
  for (HeadlessJsTaskEventListener listener : mHeadlessJsTaskEventListeners) {
    listener.onHeadlessJsTaskStart(taskId);
  }
  return taskId;
}
 

@Override
public void onDestroy() {
    super.onDestroy();
    if (mReactRootView != null) {
        mReactRootView.unmountReactApplication();
        mReactRootView = null;
    }
    if (getReactNativeHost().hasInstance()) {
        ReactInstanceManager reactInstanceMgr = getReactNativeHost().getReactInstanceManager();

        // onDestroy may be called on a ReactFragment after another ReactFragment has been
        // created and resumed with the same React Instance Manager. Make sure we only clean up
        // host's React Instance Manager if no other React Fragment is actively using it.
        if (reactInstanceMgr.getLifecycleState() != LifecycleState.RESUMED) {
            reactInstanceMgr.onHostDestroy(getActivity());
            getReactNativeHost().clear();
        }
    }
}
 

protected ReactInstanceManager createReactInstanceManager() {
    ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
            .setApplication(getApplication())
            .setJSMainModulePath(getJSMainModuleName())
            .setUseDeveloperSupport(getUseDeveloperSupport())
            .setRedBoxHandler(getRedBoxHandler())
            .setJavaScriptExecutorFactory(getJavaScriptExecutorFactory())
            .setUIImplementationProvider(getUIImplementationProvider())
            .setInitialLifecycleState(LifecycleState.BEFORE_CREATE)
            .setJSIModulesPackage(getJSIModulePackage())
            .setDevBundleDownloadListener(getDevBundleDownloadListener());

    for (ReactPackage reactPackage : getPackages()) {
        builder.addPackage(reactPackage);
    }

    String jsBundleFile = getJSBundleFile();
    if (jsBundleFile != null) {
        builder.setJSBundleFile(jsBundleFile);
    } else {
        builder.setBundleAssetName(Assertions.assertNotNull(getBundleAssetName()));
    }
    return builder.build();
}
 

protected ReactInstanceManager createReactInstanceManager() {
    ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
            .setApplication(getApplication())
            .setJSMainModulePath(getJSMainModuleName())
            .setUseDeveloperSupport(getUseDeveloperSupport())
            .setRedBoxHandler(getRedBoxHandler())
            .setJavaScriptExecutorFactory(getJavaScriptExecutorFactory())
            .setUIImplementationProvider(getUIImplementationProvider())
            .setInitialLifecycleState(LifecycleState.BEFORE_CREATE)
            .setJSIModulesPackage(getJSIModulePackage())
            .setDevBundleDownloadListener(getDevBundleDownloadListener());

    for (ReactPackage reactPackage : getPackages()) {
        builder.addPackage(reactPackage);
    }

    String jsBundleFile = getJSBundleFile();
    if (jsBundleFile != null) {
        builder.setJSBundleFile(jsBundleFile);
    } else {
        builder.setBundleAssetName(Assertions.assertNotNull(getBundleAssetName()));
    }
    return builder.build();
}
 

protected ReactInstanceManager createReactInstanceManager() {
    ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
            .setApplication(getApplication())
            .setJSMainModulePath(getJSMainModuleName())
            .setUseDeveloperSupport(getUseDeveloperSupport())
            .setRedBoxHandler(getRedBoxHandler())
            .setJavaScriptExecutorFactory(getJavaScriptExecutorFactory())
            .setUIImplementationProvider(getUIImplementationProvider())
            .setInitialLifecycleState(LifecycleState.BEFORE_CREATE)
            .setDevBundleDownloadListener(getDevBundleDownloadListener());

    for (ReactPackage reactPackage : getPackages()) {
        builder.addPackage(reactPackage);
    }

    String jsBundleFile = getJSBundleFile();
    if (jsBundleFile != null) {
        builder.setJSBundleFile(jsBundleFile);
    } else {
        builder.setBundleAssetName(Assertions.assertNotNull(getBundleAssetName()));
    }
    return builder.build();
}
 

protected ReactInstanceManager createReactInstanceManager() {
    ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
            .setApplication(getApplication())
            .setJSMainModulePath(getJSMainModuleName())
            .setUseDeveloperSupport(getUseDeveloperSupport())
            .setRedBoxHandler(getRedBoxHandler())
            .setJavaScriptExecutorFactory(getJavaScriptExecutorFactory())
            .setInitialLifecycleState(LifecycleState.BEFORE_CREATE)
            .setJSIModulesPackage(getJSIModulePackage())
            .setDevBundleDownloadListener(getDevBundleDownloadListener());

    for (ReactPackage reactPackage : getPackages()) {
        builder.addPackage(reactPackage);
    }

    String jsBundleFile = getJSBundleFile();
    if (jsBundleFile != null) {
        builder.setJSBundleFile(jsBundleFile);
    } else {
        builder.setBundleAssetName(Assertions.assertNotNull(getBundleAssetName()));
    }
    return builder.build();
}
 

protected ReactInstanceManager createReactInstanceManager() {
    ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
            .setApplication(getApplication())
            .setJSMainModulePath(getJSMainModuleName())
            .setUseDeveloperSupport(getUseDeveloperSupport())
            .setRedBoxHandler(getRedBoxHandler())
            .setJavaScriptExecutorFactory(getJavaScriptExecutorFactory())
            .setUIImplementationProvider(getUIImplementationProvider())
            .setInitialLifecycleState(LifecycleState.BEFORE_CREATE)
            .setJSIModulesProvider(getJSIModulesProvider())
            .setDevBundleDownloadListener(getDevBundleDownloadListener());

    for (ReactPackage reactPackage : getPackages()) {
        builder.addPackage(reactPackage);
    }

    String jsBundleFile = getJSBundleFile();
    if (jsBundleFile != null) {
        builder.setJSBundleFile(jsBundleFile);
    } else {
        builder.setBundleAssetName(Assertions.assertNotNull(getBundleAssetName()));
    }
    return builder.build();
}
 

protected ReactInstanceManager createReactInstanceManager() {
    ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
            .setApplication(getApplication())
            .setJSMainModulePath(getJSMainModuleName())
            .setUseDeveloperSupport(getUseDeveloperSupport())
            .setRedBoxHandler(getRedBoxHandler())
            .setJavaScriptExecutorFactory(getJavaScriptExecutorFactory())
            .setUIImplementationProvider(getUIImplementationProvider())
            .setInitialLifecycleState(LifecycleState.BEFORE_CREATE)
            .setJSIModulesPackage(getJSIModulePackage())
            .setDevBundleDownloadListener(getDevBundleDownloadListener());

    for (ReactPackage reactPackage : getPackages()) {
        builder.addPackage(reactPackage);
    }

    String jsBundleFile = getJSBundleFile();
    if (jsBundleFile != null) {
        builder.setJSBundleFile(jsBundleFile);
    } else {
        builder.setBundleAssetName(Assertions.assertNotNull(getBundleAssetName()));
    }
    return builder.build();
}
 

protected ReactInstanceManager createReactInstanceManager() {
    ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
            .setApplication(getApplication())
            .setJSMainModulePath(getJSMainModuleName())
            .setUseDeveloperSupport(getUseDeveloperSupport())
            .setRedBoxHandler(getRedBoxHandler())
            .setJavaScriptExecutorFactory(getJavaScriptExecutorFactory())
            .setUIImplementationProvider(getUIImplementationProvider())
            .setInitialLifecycleState(LifecycleState.BEFORE_CREATE)
            .setJSIModulesPackage(getJSIModulePackage())
            .setDevBundleDownloadListener(getDevBundleDownloadListener());

    for (ReactPackage reactPackage : getPackages()) {
        builder.addPackage(reactPackage);
    }

    String jsBundleFile = getJSBundleFile();
    if (jsBundleFile != null) {
        builder.setJSBundleFile(jsBundleFile);
    } else {
        builder.setBundleAssetName(Assertions.assertNotNull(getBundleAssetName()));
    }
    return builder.build();
}
 

public static boolean buildBundle(Activity mActivity, String bundleName, String Entrance) {
        boolean is_ok = false;

        try {
            ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
                    .setApplication(mActivity.getApplication())
                    .setJSMainModulePath(Entrance)
                    .addPackage(new MainReactPackage())
                    .addPackage(new QtalkServiceReactPackage(mActivity))
                    .addPackage(new CookieManagerPackage())
                    .addPackage(new SvgPackage())
                    .addPackage(new RNI18nPackage())
                    .setUseDeveloperSupport(CommonConfig.isDebug)
                    .setInitialLifecycleState(LifecycleState.RESUMED);

            String localBundleFile = getLocalBundleFilePath(mActivity, bundleName);

            File file = new File(localBundleFile);
            if (file.exists()) {
                // load from cache
                is_ok = true;
                builder.setJSBundleFile(localBundleFile);
            } else {
//                 load from asset
                is_ok = false;
            }

            mReactInstanceManager = builder.build();


        } catch (Exception e) {
            is_ok = false;
        }

        return is_ok;
    }
 

public static boolean buildBundle(Activity activity){
        boolean is_ok = false;

        try {
            ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
                    .setApplication(activity.getApplication())
                    .setJSMainModulePath("index.android")
                    .addPackage(new MainReactPackage())
                    .addPackage(new QtalkServiceReactPackage(activity))
                    .addPackage(new CookieManagerPackage())
                    .addPackage( new SvgPackage())
                    .addPackage(new RNI18nPackage())
                    .setUseDeveloperSupport(CommonConfig.isDebug)
                    .setInitialLifecycleState(LifecycleState.RESUMED);


            String localBundleFile = getLocalBundleFilePath(activity);

            File file = new File(localBundleFile);
            if (file.exists()) {
                // load from cache
                builder.setJSBundleFile(localBundleFile);
            } else {
//                 load from asset
                builder.setBundleAssetName(JS_BUNDLE_NAME);
            }

            mReactInstanceManager = builder.build();

            is_ok = true;
        }catch (Exception e){

        }

        return is_ok;
    }
 

public static boolean buildBundle(Application application){
    boolean is_ok = false;

    try {
        ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
                .setApplication(application)
                .setJSMainModulePath("index")
                .addPackage(new MainReactPackage())
                .addPackage(new SearchReactPackage())
                .addPackage( new SvgPackage())
                .addPackage(new RNI18nPackage())
                .setUseDeveloperSupport(CommonConfig.isDebug)
                .setInitialLifecycleState(LifecycleState.RESUMED);

        String localBundleFile = getLocalBundleFilePath(application);

        File file = new File(localBundleFile);
        if (file.exists()) {
            // load from cache
            builder.setJSBundleFile(localBundleFile);
        } else {
            // load from asset
            builder.setBundleAssetName(JS_BUNDLE_NAME);
        }

        mReactInstanceManager = builder.build();

        is_ok = true;
    }catch (Exception e){

    }

    return is_ok;
}
 

public static boolean buildBundle(Application application) {
    boolean is_ok = false;

    try {
        ReactInstanceManagerBuilder builder = ReactInstanceManager.builder()
                .setApplication(application)
                .setJSMainModulePath("index.android")
                .addPackage(new MainReactPackage())
                .addPackage(new SearchReactPackage())
                .addPackage(new SvgPackage())
                .addPackage(new RNI18nPackage())
                .setUseDeveloperSupport(CommonConfig.isDebug)
                .setInitialLifecycleState(LifecycleState.RESUMED);

        String localBundleFile = getLocalBundleFilePath(application);

        File file = new File(localBundleFile);
        if (file.exists()) {
            // load from cache
            builder.setJSBundleFile(localBundleFile);
        } else {
            // load from asset
            builder.setBundleAssetName(JS_BUNDLE_NAME);
        }

        mReactInstanceManager = builder.build();

        is_ok = true;
    } catch (Exception e) {

    }

    return is_ok;
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mReactInstanceManager = ReactInstanceManager.builder()
            .setApplication(getApplication())
            .setBundleAssetName("index.android.bundle")
            .setJSMainModulePath("index")
            .addPackage(new MainReactPackage())
            .addPackage(new ReactAztecPackage())
            .setUseDeveloperSupport(BuildConfig.DEBUG)
            .setInitialLifecycleState(LifecycleState.RESUMED)
            .build();
}
 

/**
 * Should be called by the hosting Fragment in {@link Fragment#onResume}
 */
public void onHostResume(@Nullable Activity activity) {
  mLifecycleState = LifecycleState.RESUMED;
  mCurrentActivity = new WeakReference(activity);
  ReactMarker.logMarker(ReactMarkerConstants.ON_HOST_RESUME_START);
  for (LifecycleEventListener listener : mLifecycleEventListeners) {
    try {
      listener.onHostResume();
    } catch (RuntimeException e) {
      handleException(e);
    }
  }
  ReactMarker.logMarker(ReactMarkerConstants.ON_HOST_RESUME_END);
}
 

/**
 * Should be called by the hosting Fragment in {@link Fragment#onPause}
 */
public void onHostPause() {
  mLifecycleState = LifecycleState.BEFORE_RESUME;
  ReactMarker.logMarker(ReactMarkerConstants.ON_HOST_PAUSE_START);
  for (LifecycleEventListener listener : mLifecycleEventListeners) {
    try {
      listener.onHostPause();
    } catch (RuntimeException e) {
      handleException(e);
    }
  }
  ReactMarker.logMarker(ReactMarkerConstants.ON_HOST_PAUSE_END);
}
 

/**
 * Should be called by the hosting Fragment in {@link Fragment#onDestroy}
 */
public void onHostDestroy() {
  UiThreadUtil.assertOnUiThread();
  mLifecycleState = LifecycleState.BEFORE_CREATE;
  for (LifecycleEventListener listener : mLifecycleEventListeners) {
    try {
      listener.onHostDestroy();
    } catch (RuntimeException e) {
      handleException(e);
    }
  }
  mCurrentActivity = null;
}
 

private synchronized void moveToResumedLifecycleState(boolean force) {
  ReactContext currentContext = getCurrentReactContext();
  if (currentContext != null) {
    // we currently don't have an onCreate callback so we call onResume for both transitions
    if (force ||
        mLifecycleState == LifecycleState.BEFORE_RESUME ||
        mLifecycleState == LifecycleState.BEFORE_CREATE) {
      currentContext.onHostResume(mCurrentActivity);
    }
  }
  mLifecycleState = LifecycleState.RESUMED;
}
 

private synchronized void moveToBeforeResumeLifecycleState() {
  ReactContext currentContext = getCurrentReactContext();
  if (currentContext != null) {
    if (mLifecycleState == LifecycleState.BEFORE_CREATE) {
      currentContext.onHostResume(mCurrentActivity);
      currentContext.onHostPause();
    } else if (mLifecycleState == LifecycleState.RESUMED) {
      currentContext.onHostPause();
    }
  }
  mLifecycleState = LifecycleState.BEFORE_RESUME;
}
 

private synchronized void moveToBeforeCreateLifecycleState() {
  ReactContext currentContext = getCurrentReactContext();
  if (currentContext != null) {
    if (mLifecycleState == LifecycleState.RESUMED) {
      currentContext.onHostPause();
      mLifecycleState = LifecycleState.BEFORE_RESUME;
    }
    if (mLifecycleState == LifecycleState.BEFORE_RESUME) {
      currentContext.onHostDestroy();
    }
  }
  mLifecycleState = LifecycleState.BEFORE_CREATE;
}
 

@Override
protected void onPause() {
  super.onPause();

  mLifecycleState = LifecycleState.BEFORE_RESUME;

  overridePendingTransition(0, 0);

  if (mReactInstanceManager != null) {
    mReactInstanceManager.onHostPause();
  }
}
 

@Override
protected void onResume() {
  super.onResume();

  mLifecycleState = LifecycleState.RESUMED;

  if (mReactInstanceManager != null) {
    mReactInstanceManager.onHostResume(this, this);
  }
}
 

/** Check whether on not the React Native application is in foreground. */
public static boolean isReactNativeAppInForeground(@NonNull ReactNativeHost reactNativeHost) {
  if (!reactNativeHost.hasInstance()) {
    // If the app was force-stopped the instace will be destroyed. The instance can't be created from a background thread.
    return false;
  }
  ReactContext reactContext = reactNativeHost.getReactInstanceManager().getCurrentReactContext();
  return reactContext != null && reactContext.getLifecycleState() == LifecycleState.RESUMED;
}
 

public LifecycleState getLifecycleState() {
  return mLifecycleState;
}
 

ReactInstanceManager(
  Context applicationContext,
  @Nullable Activity currentActivity,
  @Nullable DefaultHardwareBackBtnHandler defaultHardwareBackBtnHandler,
  JavaScriptExecutorFactory javaScriptExecutorFactory,
  @Nullable JSBundleLoader bundleLoader,
  @Nullable String jsMainModulePath,
  List<ReactPackage> packages,
  boolean useDeveloperSupport,
  @Nullable NotThreadSafeBridgeIdleDebugListener bridgeIdleDebugListener,
  LifecycleState initialLifecycleState,
  @Nullable UIImplementationProvider mUIImplementationProvider,
  NativeModuleCallExceptionHandler nativeModuleCallExceptionHandler,
  @Nullable RedBoxHandler redBoxHandler,
  boolean lazyViewManagersEnabled,
  @Nullable DevBundleDownloadListener devBundleDownloadListener,
  int minNumShakes,
  int minTimeLeftInFrameForNonBatchedOperationMs,
  @Nullable JSIModulePackage jsiModulePackage,
  @Nullable Map<String, RequestHandler> customPackagerCommandHandlers) {
  Log.d(ReactConstants.TAG, "ReactInstanceManager.ctor()");
  initializeSoLoaderIfNecessary(applicationContext);

  DisplayMetricsHolder.initDisplayMetricsIfNotInitialized(applicationContext);

  mApplicationContext = applicationContext;
  mCurrentActivity = currentActivity;
  mDefaultBackButtonImpl = defaultHardwareBackBtnHandler;
  mJavaScriptExecutorFactory = javaScriptExecutorFactory;
  mBundleLoader = bundleLoader;
  mJSMainModulePath = jsMainModulePath;
  mPackages = new ArrayList<>();
  mUseDeveloperSupport = useDeveloperSupport;
  mDevSupportManager =
      DevSupportManagerFactory.create(
          applicationContext,
          createDevHelperInterface(),
          mJSMainModulePath,
          useDeveloperSupport,
          redBoxHandler,
          devBundleDownloadListener,
          minNumShakes,
          customPackagerCommandHandlers);
  mBridgeIdleDebugListener = bridgeIdleDebugListener;
  mLifecycleState = initialLifecycleState;
  mMemoryPressureRouter = new MemoryPressureRouter(applicationContext);
  mNativeModuleCallExceptionHandler = nativeModuleCallExceptionHandler;
  synchronized (mPackages) {
    PrinterHolder.getPrinter()
        .logMessage(ReactDebugOverlayTags.RN_CORE, "RNCore: Use Split Packages");
    mPackages.add(
        new CoreModulesPackage(
            this,
            new DefaultHardwareBackBtnHandler() {
              @Override
              public void invokeDefaultOnBackPressed() {
                ReactInstanceManager.this.invokeDefaultOnBackPressed();
              }
            },
            mUIImplementationProvider,
            lazyViewManagersEnabled,
            minTimeLeftInFrameForNonBatchedOperationMs));
    if (mUseDeveloperSupport) {
      mPackages.add(new DebugCorePackage());
    }
    mPackages.addAll(packages);
  }
  mJSIModulePackage = jsiModulePackage;

  // Instantiate ReactChoreographer in UI thread.
  ReactChoreographer.initialize();
  if (mUseDeveloperSupport) {
    mDevSupportManager.startInspector();
  }
}
 

private synchronized void moveReactContextToCurrentLifecycleState() {
  if (mLifecycleState == LifecycleState.RESUMED) {
    moveToResumedLifecycleState(true);
  }
}
 

public LifecycleState getLifecycleState() {
  return mLifecycleState;
}
 

/**
 * Sets the initial lifecycle state of the host. For example, if the host is already resumed at
 * creation time, we wouldn't expect an onResume call until we get an onPause call.
 */
public ReactInstanceManagerBuilder setInitialLifecycleState(
  LifecycleState initialLifecycleState) {
  mInitialLifecycleState = initialLifecycleState;
  return this;
}