package com.example.
falldetctionmodule_fyp
import android.annotation.SuppressLint
import android.app.Notification
import android.app.NotificationManager
import android.content.Context
import android.content.Intent
import android.hardware.Sensor
import android.hardware.SensorEvent
import android.hardware.SensorEventListener
import android.hardware.SensorManager
import android.os.Build
import android.os.Bundle
import android.os.CountDownTimer
import android.util.Log
import android.widget.Button
import android.widget.Toast
import androidx.annotation.RequiresApi
import androidx.appcompat.app.AppCompatActivity
import androidx.core.app.NotificationCompat
import kotlinx.android.synthetic.main.activity_main.*
import java.text.DecimalFormat
import kotlin.math.log
import kotlin.math.pow
import kotlin.math.sqrt
class MainActivity : AppCompatActivity() , SensorEventListener
{
lateinit var s: SensorManager;
lateinit var accelrometer:Sensor
var x:Double=0.0
var y:Double=0.0
var z:Double=0.0
var counter:Int=0
var lasttime:Long=0
var newtime:Long=0
var diff:Long=0
var AccRound=0.0
var status:Boolean=false
var minv:Boolean=false
var maxv:Boolean=false
val timer = object: CountDownTimer(5000, 500) {
override fun onTick(millisUntilFinished: Long)
{
override fun onFinish() {
}
}
lateinit var fallstatus:Button
@RequiresApi(Build.VERSION_CODES.O)
@SuppressLint("SetTextI18n")
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
Log.i("th"," activity id= ${Thread.currentThread().id}")
s= getSystemService(Context.SENSOR_SERVICE) as SensorManager
s.registerListener(
this,
s.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
300000
)
fallstatus=findViewById(R.id.button)
fallstatus.setOnClickListener{
var i=Intent(this,MyService::class.java)
startService(i)
status=false
minv=false
maxv=false
counter=0
textView3.text="All oky"
textView4.text="Pre"
textView2.text="Fall Result:"
}
button2.setOnClickListener {
var int:Intent= Intent(this,jerk::class.java)
startActivity(int)
}
}
override fun onAccuracyChanged(sensor: Sensor?, accuracy: Int) {
}
@SuppressLint("SetTextI18n")
override fun onSensorChanged(event: SensorEvent?)
{
x=event!!.values[0].toDouble()
y=event!!.values[1].toDouble()
z=event!!.values[2].toDouble()
var sqroot= sqrt(x.pow(2) + y.pow(2)+z.pow(2))
var G=sqroot/SensorManager.GRAVITY_EARTH
Log.i("sqvalue","sq=$sqroot")
val precision = DecimalFormat("0.00")
AccRound = precision.format(sqroot).toDouble()
textView.setText("x= ${event!!.values[0]}\n\n"+"y= ${event!!.values[1]}\n\n\n"+
"z= ${event!!.values[2]}"+"\n\n\n acceleration=$sqroot")
if (sqroot<3 && !minv && !status)
{
minv=true
lasttime=System.currentTimeMillis()
Log.i("min f","free fall to ground $sqroot" )
Toast.makeText(this,"free fall to ground $sqroot",Toast.LENGTH_SHORT).show()
Log.i("min","x=$x\n" +
"y=$y\n" +
"z=$z \n" +
"\n" +
"acceleration=$sqroot \n" +
"\n")
textView4.append("--"+AccRound.toString())
}
if (minv)
{
counter++
textView4.append("--"+AccRound.toString())
if (sqroot>=120 && !maxv && !status)
{
newtime = System.currentTimeMillis()
diff = newtime - lasttime
Log.i("min","x=$x\n" +
"y=$y\n" +
"z=$z \n" +
"\n" +
"acceleration=$sqroot \n time=$diff" +
"\n")
Toast.makeText(this,"last:$lasttime && new:$newtime \n diff:$diff\n\n
$sqroot",Toast.LENGTH_LONG).show()
if (diff in 1000..6000)
{
maxv = true
Toast.makeText(this, "hardfall $sqroot", Toast.LENGTH_SHORT).show()
status = true
}
}
if (sqroot>=60 && !maxv && !status)
{
newtime = System.currentTimeMillis()
diff = newtime - lasttime
Log.i("min","x=$x\n" +
"y=$y\n" +
"z=$z \n" +
"\n" +
"acceleration=$sqroot \n time=$diff" +
"\n")
Toast.makeText(this,"last:$lasttime && new:$newtime \n diff:$diff\n\n
$sqroot",Toast.LENGTH_LONG).show()
if (diff in 1000..6000)
{
maxv = true
Toast.makeText(this, "softfall$sqroot", Toast.LENGTH_SHORT).show()
status = true
}
}
if(maxv && minv && status)
{
textView3.text="Detected"
Toast.makeText(this,"fall detected $sqroot",Toast.LENGTH_SHORT).show()
textView2.text="fall result : \n\nx=$x\ny=$y\nz=$z \n\nacceleration=$sqroot \n\n" +
"time difference:$diff milisec"
minv=false
maxv=false
}
if (counter>=10)
{
counter=0
minv=false
maxv=false
Toast.makeText(this,"cancel the fall to groud beacuse not hit groud detect",Toast.LENGTH_LONG).show()
}
}
