问题：jar包冲突
查询：gradle assembleDebug --stacktrace
定位：Caused by: com.android.tools.r8.errors.CompilationError
compile ("com.facebook.react:react-native:0.55.4") {
exclude group: 'com.squareup.okhttp3'
}
到module下敲命令：
gradle -q dependencies
//整体移除v4
configurations {
all*.exclude group: 'com.android.support', module: 'support-v4'
}
转载：
https://blog.csdn.net/stupid56862/article/details/81130589
