비만도 계산을 한 후 결과가 정상인지 비만인지 등에 대한 결과가 나오는 간단한 앱이다.
bmi 지수는 Toast 메세지로 짧게 나온다.
//MainActivity.kt
package com.example.bmicalculator
import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.EditText
class MainActivity : AppCompatActivity() {
lateinit var resultButton : Button
lateinit var nameEditText: EditText
lateinit var heightEditText : EditText
lateinit var weightEditText : EditText
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
resultButton = findViewById<Button>(R.id.resultButton)
nameEditText = findViewById<EditText>(R.id.nameEditText)
heightEditText = findViewById<EditText>(R.id.heightEditText)
weightEditText = findViewById<EditText>(R.id.weightEditText)
loadData()
resultButton.setOnClickListener {
saveData(nameEditText.text.toString(),
heightEditText.text.toString().toInt(),
weightEditText.text.toString().toInt())
var intent = Intent(this, ResultActivity::class.java)
intent.putExtra("name",nameEditText.text.toString())
intent.putExtra("height",heightEditText.text.toString())
intent.putExtra("weight",weightEditText.text.toString())
startActivity(intent)
}
}
private fun saveData(name: String,height: Int, weight: Int){
var pref = this.getPreferences(0)
var editor = pref.edit()
editor.putString("KEY_NAME",nameEditText.text.toString()).apply()
editor.putInt("KEY_HEIGHT", heightEditText.text.toString().toInt()).apply() //apply 시 KEY_HEIGHT 키가 선언됨
editor.putInt("KEY_WEIGHT", weightEditText.text.toString().toInt()).apply()
}
private fun loadData(){
var pref = this.getPreferences(0)
var name = pref.getString("KEY_NAME","")
var height = pref.getInt("KEY_HEIGHT",0)
var weight = pref.getInt("KEY_WEIGHT",0)
if(height != 0 && weight != 0){ //최초에는 실행하지 않음. 값이 있을 때 실행
nameEditText.setText(name.toString())
heightEditText.setText(height.toString())
weightEditText.setText(weight.toString())
}
}
}
//ResultActivity.kt
package com.example.bmicalculator
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.ImageView
import android.widget.TextView
import android.widget.Toast
class ResultActivity : AppCompatActivity() {
lateinit var resultTextView : TextView
lateinit var imageView : ImageView
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_result)
resultTextView = findViewById(R.id.resultTextView)
imageView = findViewById(R.id.imageView)
var name = intent.getStringExtra("name").toString()
var height = intent.getStringExtra("height")!!.toInt()
var weight = intent.getStringExtra("weight")!!.toInt()
var bmi = weight / Math.pow(height/100.0 , 2.0)
when{
bmi >= 35 -> resultTextView.text = "고도 비만"
bmi >= 30 -> resultTextView.text = "2단계 비만"
bmi >= 25 -> resultTextView.text = "1단계 비만"
bmi >= 23 -> resultTextView.text = "과제중"
bmi >= 18.5 -> resultTextView.text = "정상"
else -> resultTextView.text = "저체중"
}
when{
bmi >= 23 -> imageView.setImageResource(R.drawable.ic_baseline_mood_bad_24)
bmi >= 18.5 -> imageView.setImageResource(R.drawable.ic_baseline_sentiment_satisfied_alt_24)
else -> imageView.setImageResource(R.drawable.ic_baseline_sentiment_very_dissatisfied_24)
}
Toast.makeText(this,"$name's bmi : $bmi",Toast.LENGTH_SHORT).show()
}
}
'Project > Android App' 카테고리의 다른 글
<TeenGü>, 2021 Programming Guru2(Android) 대상 수상작 (0) | 2021.08.19 |
---|---|
TimerApp (0) | 2021.07.13 |
StopwatchApp (0) | 2021.07.12 |