Summary:
`ReactRootView.startReactApplication` takes a `Bundle` argument called `initialProperties`. This is translated to a `ReadableMap` via `Arguments.fromBundle`. If the bundle contains an array of bundles, this gets translated by `Arguments.fromArray`.
If the bundle was passed from one activity to another via intent extras, however, there is a problem. After the bundle has been marshaled and unmarshaled, the array of `Bundle`s come out the other end as an arrap of `Parcelable`s, although each array element remains a `Bundle`. This results in an "Unknown array type" exception.
This PR fixes this by adding support for `Parcelable` arrays – provided they contain only members of type `Bundle`.
## Changelog
[Android] [Fixed] - Don't throw "Unknown array type" exception when passing serialized bundle arrays in ReactRootView.startReactApplication's initialProperties parameter
Pull Request resolved: https://github.com/facebook/react-native/pull/26379
Test Plan: Added test class `ArgumentsTest`. The test method `testFromMarshaledBundle` fails when used on the old version of `Arguments`.
Differential Revision: D17661203
Pulled By: cpojer
fbshipit-source-id: 63612d78f49bdf9cc53f6f21ae883dba6cebce84
Andres Suarez
Petter Hesselberg