I have an Android Jetpack Compose application in Kotlin with a function requiring context. The function is as seen below.
fun copyDataBase(context: Context, OUTPUT_DB_PATH: String, DB_NAME: String) {
// Path to output database path (application database path).
var APP_DB_FILE_PATH = OUTPUT_DB_PATH + "/" + DB_NAME
// Path to input database file.
var INPUT_DB_PATH = "database/" + DB_NAME
// Open your local db as the input stream
val databaseInput: InputStream = context.getAssets().open(INPUT_DB_PATH)
// Open the empty db as the output stream
val databaseOutput: OutputStream = FileOutputStream(APP_DB_FILE_PATH)
// Transfer bytes from the inputfile to the outputfile
val buffer = ByteArray(1024)
var length: Int
while (databaseInput.read(buffer).also { length = it } > 0) {
databaseOutput.write(buffer, 0, length)
}
// Close the streams
databaseOutput.flush()
databaseOutput.close()
databaseInput.close()
}
And then in the main activity I do this.
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// How can I get context to supply to the function?
copyDataBase(context, DB_PATH, DB_NAME)
setContent {
Column() {
TopAppBar(title = { Text(text = "Nyimbo") })
ScrollableColumn(Modifier.fillMaxWidth()
.padding(10.dp)) {
lyricsPageComposable(lyricsMap = songMap)
}
}
}
}
}
How can I get context to supply it to the function in the main activity? From which Jetpack Compose namespace is it imported from?
I have tried import android.content.Context but this requires initialization of which I can't figure out how to do it.
The idea is to copy the pre-populated SQLite database from assets directory into the application at first run.
contextto start with, no matter where it is called.