Room insert and return id

    class StudentRepository private constructor(private val studentDao: StudentDao)
    {

        fun getStudents() = studentDao.getStudents()

        fun insertStudent(student: Student): Single<Long>? {
            return Single.fromCallable(
                Callable<Long> { studentDao.insertStudent(student) }
            )
        }

 companion object {

        // For Singleton instantiation
        @Volatile private var instance: StudentRepository? = null

        fun getInstance(studentDao: StudentDao) =
                instance ?: synchronized(this) {
                    instance ?: StudentRepository(studentDao).also { instance = it }
                }
    }
}

Source: stackoverflow.com

Similar codes

0 vote213 views1 answer
How to create folder java
Java
0 vote193 views1 answer
Run java class file
Java
0 vote180 views1 answer
Import image icon
Java
2 votes218 views1 answer
Android list get
Java
0 vote178 views2 answers
Java Program to Convert Milliseconds to Minutes and Seconds
Java
2 votes179 views2 answers
Jenkins password decrypt online
Java
1 vote190 views1 answer
Pycharm qt designer
Java
0 vote188 views1 answer
Managa firebase users
Java
0 vote188 views1 answer
Queue and stack reader
Java
6 votes296 views2 answers
Android array to string
Java