[Kotlin] @JvmOverloads + CustomView

@JvmOverloads  +  FrameLayout

---

back_title_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="50dp">

    <ImageButton
        android:id="@+id/btnBack"
        android:layout_width="24dp"
        android:layout_height="24dp"
        android:layout_gravity="center_vertical"
        android:layout_marginLeft="16dp"
        android:background="@drawable/arrow_back"
        android:foreground="?android:attr/selectableItemBackground" />

    <TextView
        android:id="@+id/tvTitle"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center"
        android:gravity="center"
        android:text=""
        android:textColor="@android:color/black"
        android:textSize="20sp"
        android:textStyle="bold" />

</FrameLayout>

back_title_layout.xml

 

 

 

 

BackTitleLayout.kt

package com.jwsoft.kotlinproject

import android.app.Activity
import android.content.Context
import android.util.AttributeSet
import android.view.LayoutInflater
import android.widget.FrameLayout
import android.widget.ImageButton

open class BackTitleLayout @JvmOverloads constructor(context: Context,
                      attrs: AttributeSet? = null,
                      defStyleAttr: Int = 0,
                      defStyleRes: Int = 0)
    : FrameLayout(context, attrs, defStyleAttr, defStyleRes) {

    init {
        LayoutInflater.from(context)
            .inflate(R.layout.back_title_layout, this, true)

        findViewById<ImageButton>(R.id.btnBack).setOnClickListener {
            (context as Activity).finish()
        }
    }

}

 

 

 

 

 

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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"
    android:orientation="vertical"
    android:layout_gravity="center"
    tools:context=".MainActivity">

    <com.jwsoft.kotlinproject.BackTitleLayout
        android:layout_width="match_parent"
        android:layout_height="50dp" />

    <TextView
        android:id="@+id/tvPage"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:layout_gravity="center"
        android:text="Main Activity"
        android:textSize="30dp"
        android:textStyle="bold|italic"
        android:clickable="true"
        android:focusable="true"
        android:foreground="?android:attr/selectableItemBackground"/>

</LinearLayout>

activity_main.xml

 

 

 

 

MainActivity.kt

package com.jwsoft.kotlinproject

import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        tvPage.setOnClickListener {
            startActivity(Intent(this, SecondActivity::class.java))
        }
    }

}

 

 

 

 

 

 

 

activity_second.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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"
    android:orientation="vertical"
    android:layout_gravity="center"
    tools:context=".SecondActivity">

    <com.jwsoft.kotlinproject.BackTitleLayout
        android:layout_width="match_parent"
        android:layout_height="50dp" />

    <TextView
        android:id="@+id/tvPage"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:layout_gravity="center"
        android:text="Second Activity"
        android:textSize="30dp"
        android:textStyle="bold|italic"
        android:clickable="true"
        android:focusable="true"
        android:foreground="?android:attr/selectableItemBackground"/>

</LinearLayout>

activity_second.xml

 

 

 

 

 

SecondActivity.kt

package com.jwsoft.kotlinproject

import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import kotlinx.android.synthetic.main.activity_second.*

class SecondActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_second)

        tvPage.setOnClickListener {
            startActivity(Intent(this, ThirdActivity::class.java))
        }

    }

}

 

 

 

 

 

 

 

activity_third.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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"
    android:orientation="vertical"
    android:layout_gravity="center"
    tools:context=".ThirdActivity">

    <com.jwsoft.kotlinproject.BackTitleLayout
        android:layout_width="match_parent"
        android:layout_height="50dp" />

    <TextView
        android:id="@+id/tvPage"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:layout_gravity="center"
        android:text="Third Activity"
        android:textSize="30dp"
        android:textStyle="bold|italic"
        android:clickable="true"
        android:focusable="true"
        android:foreground="?android:attr/selectableItemBackground"/>

</LinearLayout>

activity_third.xml

 

 

 

 

 

ThirdActivity.kt

package com.jwsoft.kotlinproject

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Toast
import kotlinx.android.synthetic.main.activity_main.tvPage

class ThirdActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_third)

        tvPage.setOnClickListener {
            Toast.makeText(applicationContext, "마지막 페이지 입니다.", Toast.LENGTH_SHORT).show()
        }
    }

}

실행 결과