모바일프로그래밍 - LifeCycleFragment

Android studio, kotlin 사용

 

결과화면

 

MainActivity.kt

package com.example.staticfragment

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log

class MainActivity : AppCompatActivity() {
    var TAG: String = "MyTest"
    var LOG_TAG = "*** Activity ***"

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        Log.d(LOG_TAG, "MainActivity: onCreate() called")
    }

    override fun onRestart() {
        super.onRestart()
        Log.d(LOG_TAG, "MainActivity: onRestart() called")
    }

    override fun onStart() {
        super.onStart()
        Log.d(LOG_TAG, "MainActivity: onStart() called")
    }

    override fun onResume() {
        super.onResume()
        Log.d(LOG_TAG, "MainActivity: onResume() called")
    }

    override fun onPause() {
        super.onPause()
        Log.d(LOG_TAG, "MainActivity: onPause() called")
    }

    override fun onStop() {
        super.onStop()
        Log.d(LOG_TAG, "MainActivity: onStop() called")
    }

    override fun onDestroy() {
        super.onDestroy()
        Log.d(LOG_TAG, "MainActivity: onDestroy() called")
    }
}

 

 

 

 

LifecycleFragment.kt

package com.example.staticfragment

import android.os.Bundle
import android.util.Log
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup


class LifecycleFragment : Fragment() {
    var LOG_TAG = "$$$ Fragment $$$"


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        Log.d(LOG_TAG, "LifecycleFragment: onCreate() called")
    }

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        Log.d(LOG_TAG, "LifecycleFragment: onCreateView() called")
        return inflater.inflate(R.layout.fragment_lifecycle, container, false)
    }

    override fun onStart() {
        Log.d(LOG_TAG, "LifecycleFragment: onStart() called")
        super.onStart()
    }

    override fun onResume() {
        Log.d(LOG_TAG, "LifecycleFragment: onResume() called")
        super.onResume()
    }

    override fun onPause() {
        Log.d(LOG_TAG, "LifecycleFragment: onPause() called")
        super.onPause()
    }

    override fun onStop() {
        Log.d(LOG_TAG, "LifecycleFragment: onStop() called")
        super.onStop()
    }

    override fun onDestroy() {
        Log.d(LOG_TAG, "LifecycleFragment: onDestroy() called")
        super.onDestroy()
    }

    override fun onDestroyView() {
        Log.d(LOG_TAG, "LifecycleFragment: onDestroyView() called")
        super.onDestroyView()
    }
}

 

onCreate 함수 안에

inflater.inflate(R.layout.fragment_lifecycle, container, false)

이 코드 중요함!

 

 

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <androidx.fragment.app.FragmentContainerView
        android:id="@+id/fragmentContainerView"
        android:name="com.example.staticfragment.LifecycleFragment"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="197dp"
        android:layout_marginTop="308dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

 

fragment_lifecycle.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".LifecycleFragment">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="@string/hello_blank_fragment" />

</FrameLayout>

 

 

 

오늘은 static한 방법 공부함. 내일은 dynamic 공부할 예정.