The fix for that is: Add "--utf16" to aapt by adding
android {
aaptOptions {
additionalParameters '--utf16'
}
}
to your build.gradle
file, and make sure you are not using aapt2.
See https://issuetracker.google.com/issues/37140916
It seems that newer versions of Android don't cause the crash (API 24 worked in my tests), but that doesn't help if you are supporting older versions. The best I have been able to figure out is to use Java coded strings.
public class AppEmojiStrings {
// This is only a workaround for emoji causing crashes in XML strings.
// Use the standard strings.xml for all other strings.
public static final String thumbsUp = "Thumbs up