自定义Title

xml：

<jp.co.view.TitleLayout
    android: />

TitleLayout：

package jp.co.view

import android.app.Activity
import android.content.Context
import android.util.AttributeSet
import android.view.LayoutInflater
import android.view.View
import android.widget.ImageView
import android.widget.LinearLayout
import android.widget.TextView
import jp.co.hyakujushibank.securestarter.R

class TitleLayout(context: Context, attrs: AttributeSet) : LinearLayout(context, attrs) {
    private var barImg: ImageView? = null
    private var titleTv: TextView? = null
    private var closeTv: TextView? = null

    init {
        LayoutInflater.from(context).inflate(R.layout.layout_title, this)
        val activity = (getContext() as Activity)
        val backImg = findViewById(R.id.backImg) as ImageView
        val closeTv = findViewById(R.id.closeTv) as TextView
        val titleTv = findViewById(R.id.titleTv) as TextView
        val barImg = findViewById(R.id.barImg) as ImageView
        this.barImg = barImg
        this.titleTv = titleTv
        this.closeTv = closeTv
        backImg.setOnClickListener { activity.finish() }
    }

    fun setBarImageResource(resource: Int) {
        barImg!!.setImageResource(resource)
    }

    fun setTitle(title: String) {
        titleTv!!.text = title
    }

    fun setCloseInvisible(){
        closeTv!!.visibility=View.INVISIBLE
    }
}

Layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:andro></LinearLayout>