Any ideas guys?)

# android

[morozov]

Any ideas guys?)

[Efe]

can you also add your databaseReference creation?

[morozov]

For example i can easily call my fun addTarget() from this file.
And add target.

Here is gist: https://gist.github.com/mnewlive/a6a1d4fe1e28920da34c7bc12133fdee

[morozov]

Problem with query
I can't get data for -LmfEVnx-y7c3oh8_U9F

[Efe]

it looks like it has a ‘-’ in front of it.

[Efe]

would it be the problem?

[Efe]

a naive attempt

[morozov]

the problem is how to call the -LmfEVnx-y7c3oh8_U9F

[morozov]

For example if i change my chain on smth like this:

databaseReference?.child("targets")?.child("users")
            ?.child(uid)?.child("targets")

and after this a log the data:

val data = dataSnapshot.value as? HashMap<String, String>?
                Log.d("some", "dataSnap: $data")

i get next:

dataSnap: {-LmfOGKjqy-OC4HzxBHF={name=ggg, description=bhhh, guid=-LmfOGKiiQAIcIIWQh8i}, -LmfOLEMiZrgw2m4GgLd={name=hhh, description=nnnj, guid=-LmfOLELLWTos6SXQxIv}, -LmfX6dkBtZzSKbTbnLO={name=щщщщ, description=щщщщ, guid=-LmfX6djA3iflD3yQytN}}

[morozov]

resolved:

private fun fetchTarget(guid: String) {
        val targetsRef = databaseReference!!.child("targets").child("users").child(uid.toString()).child("targets")
        val query = targetsRef.orderByChild("guid").equalTo(guid)
        val valueEventListener = object : ValueEventListener {
            override fun onDataChange(dataSnapshot: DataSnapshot) {
                for (targetSnapshot in dataSnapshot.children) {
                    val target = targetSnapshot.getValue(Target::class.java)

                    val name = target?.name ?: ""
                    val description = target?.description ?: ""

                    if (name.isEmpty()) Log.d("some", "nameIsEmpty")
                    else updateViewsContent(name = name, description = description)
                }
            }
            override fun onCancelled(databaseError: DatabaseError) {
                Log.d("some", databaseError.message)
            }
        }
        query.addListenerForSingleValueEvent(valueEventListener)
    }