[ Important ] Violations on android P Restrictions on non-SDK interfaces

[narychen]

Run react-native app on android P emulator will throw out a caution of non-sdk usage.
The link is https://developer.android.com/preview/restrictions-non-sdk-interfaces
And a bunch of react-native native android code use refection or other non-sdk that will cause
the app not working on Android P.
A example piece of code is in ReactTextInputManager.java

  private void setCursorColor(ReactEditText view, @Nullable Integer color) {
    // Evil method that uses reflection because there is no public API to changes
    // the cursor color programmatically.
    // Based on http://stackoverflow.com/questions/25996032/how-to-change-programatically-edittext-cursor-color-in-android.
    try {
      // Get the original cursor drawable resource.
      Field cursorDrawableResField = TextView.class.getDeclaredField("mCursorDrawableRes"); 
      cursorDrawableResField.setAccessible(true);
      int drawableResId = cursorDrawableResField.getInt(view);

      // T

Use reflection TextView.class.getDeclaredField("mCursorDrawableRes")

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[react-native-bot]

This issue was marked as lacking information required by the issue template. There has been no activity on this issue for a while, so I will go ahead and close it.

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[hramos]

What's the status of this issue?

[rickhanlonii]

Doesn't look like there's anything actionable here and there's been no activity in awhile so we're going to close but if there's more information we are happy to re-open

[joshfriend]

The non-sdk interfaces restrictions are getting tighter in Android Q, this should remain open.

The specific field mCursorDrawableRes that is still being obtained by reflection by ReactTextInputManager is listed in the sdk graylist. As I understand it, any app that targets Android Q and uses this will crash now because of the restriction.

When this was reported almost a year ago, there should have been an effort to request that the API be made public as described here. I am not the original poster of the issue, so I do not know for sure if this hasn't been done, but a quick search on google's bugtracker under the relevant component does not reveal any such requests.