Hello,
I am not able to plot a graph using kotlin and back end is my sql database.
Code:
import android.os.Bundle
import android.os.Parcel
import android.os.Parcelable
import android.support.v7.app.AppCompatActivity
import android.widget.ArrayAdapter
import android.widget.Toast
import com.github.mikephil.charting.data.BarData
import com.github.mikephil.charting.data.BarDataSet
import com.github.mikephil.charting.data.BarEntry
import kotlinx.android.synthetic.main.activity_main.*
import java.util.*
import com.android.volley.Request
import com.android.volley.RequestQueue
import com.android.volley.Response
import com.android.volley.toolbox.JsonArrayRequest
import com.android.volley.toolbox.Volley
class MainActivity() : AppCompatActivity(), Parcelable {
constructor(parcel: Parcel) : this() {
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
setBarChart()
}
private fun setBarChart() {
val url="http://192.168.1.7/count/get_user.php"
val entries = ArrayList<BarEntry>()
var rq:RequestQueue=Volley.newRequestQueue(this)
var jar=JsonArrayRequest(Request.Method.GET,url,null,Response.Listener { response ->
for(x in 0..response.length()-1)
entries.add(response.getJSONObject(x).getString("usercount"))
var adp= ArrayAdapter(this,R.layout.my_textview,entries)
home_rate.adapter=adp
}, Response.ErrorListener { error ->
Toast.makeText(this,error.message, Toast.LENGTH_LONG).show()
})
rq.add(jar)
val barDataSet = BarDataSet(entries, "Cells")
val data = BarData(labels, barDataSet)
barChart.data = data // set the data and list of lables into chart
barChart.setDescription("User Count Weekly") // set the description
//barDataSet.setColors(ColorTemplate.COLORFUL_COLORS)
barDataSet.color = resources.getColor(R.color.colorAccent)
barChart.animateY(5000)
}
MY SQL Table:
user
date usercount
09/01/18 22
09/02/18 34
09/03/18 21