private void tearDownReactContext(ReactContext reactContext) {
UiThreadUtil.assertOnUiThread();
if (mLifecycleState == LifecycleState.RESUMED) {
reactContext.onHostPause();
}
for (ReactRootView rootView : mAttachedRootViews) {
detachViewFromInstance(rootView, reactContext.getCatalystInstance());
}
reactContext.destroy();
mDevSupportManager.onReactInstanceDestroyed(reactContext);
mMemoryPressureRouter.removeMemoryPressureListener(reactContext.getCatalystInstance());
}
/**
* Detach given {@param rootView} from current catalyst instance. It's safe to call this method
* multiple times on the same {@param rootView} - in that case view will be detached with the
* first call.
*/
@Override
public void detachRootView(ReactRootView rootView) {
UiThreadUtil.assertOnUiThread();
if (mAttachedRootViews.remove(rootView)) {
if (mCurrentReactContext != null && mCurrentReactContext.hasActiveCatalystInstance()) {
detachViewFromInstance(rootView, mCurrentReactContext.getCatalystInstance());
}
}
}
/**
* Attach given {@param rootView} to a catalyst instance manager and start JS application using JS
* module provided by {@link ReactRootView#getJSModuleName}. If the react context is currently
* being (re)-created, or if react context has not been created yet, the JS application associated
* with the provided root view will be started asynchronously, i.e this method won't block. This
* view will then be tracked by this manager and in case of catalyst instance restart it will be
* re-attached.
*/
@Override
public void attachMeasuredRootView(ReactRootView rootView) {
UiThreadUtil.assertOnUiThread();
mAttachedRootViews.add(rootView);
// If react context is being created in the background, JS application will be started
// automatically when creation completes, as root view is part of the attached root view list.
if (mReactContextInitAsyncTask == null && mCurrentReactContext != null) {
attachMeasuredRootViewToInstance(rootView, mCurrentReactContext.getCatalystInstance());
}
}