open class BaseActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        //Kotlin當(dāng)中的javaClass表示獲取當(dāng)前實(shí)例的Class對(duì)象,相當(dāng)于在java當(dāng)中調(diào)用getClass()方法
        //而Kotlin當(dāng)中的BaseActivity::class.java表示獲取BaseActivity類的Class對(duì)象,相當(dāng)于java當(dāng)中的BaseActivity.class
        //javaClass.simpleName 表示獲取當(dāng)前實(shí)例的對(duì)象然后調(diào)用simpleName獲取當(dāng)前實(shí)例的類名
        Log.d("BaseActivity", javaClass.simpleName)
    }
}

package com.zb.activitytest.util
import android.app.Activity
/**
 * 單例類,專門用來管理所有的Activity
 */
object ActivityCollector {
    //創(chuàng)建一個(gè)ArrayList集合,用來存放所有的Activity
    private val activities = ArrayList<Activity>()
    //往集合當(dāng)中添加Activity的方法
    fun addActivity(activity: Activity) {
        activities.add(activity)
    }
    //刪除集合當(dāng)中的Activity的方法
    fun removeActivity(activity: Activity) {
        activities.remove(activity)
    }
    //銷毀所有的Activity的方法
    fun finishAll() {
        //遍歷集合
        for (activity in activities) {
            //判斷當(dāng)前activity是否是正在銷毀的狀態(tài)
            if (!activity.isFinishing) {
                //如果不是正在銷毀的階段,那么我們就調(diào)用activity的finish方法,將其進(jìn)行銷毀
                activity.finish()
            }
        }
        activities.clear()
    }
}

open class BaseActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        //Kotlin當(dāng)中的javaClass表示獲取當(dāng)前實(shí)例的Class對(duì)象,相當(dāng)于在java當(dāng)中調(diào)用getClass()方法
        //而Kotlin當(dāng)中的BaseActivity::class.java表示獲取BaseActivity類的Class對(duì)象,相當(dāng)于java當(dāng)中的BaseActivity.class
        //javaClass.simpleName 表示獲取當(dāng)前實(shí)例的對(duì)象然后調(diào)用simpleName獲取當(dāng)前實(shí)例的類名
        Log.d("BaseActivity", javaClass.simpleName)
        //當(dāng)回調(diào)onCreate()方法的時(shí)候,應(yīng)該往集合當(dāng)中添加當(dāng)前activity的實(shí)例
        ActivityCollector.addActivity(this)
    }
    override fun onDestroy() {
        super.onDestroy()
        //當(dāng)回調(diào)onDestroy()方法的時(shí)候,應(yīng)該刪除集合當(dāng)中的activity實(shí)例
        ActivityCollector.removeActivity(this)
    }
}

//殺死當(dāng)前進(jìn)程
android.os.Process.killProcess(android.os.Process.myPid())

    /**
     * activity的最佳啟動(dòng)方式,方便告知?jiǎng)e的activity(想要啟動(dòng)本activity)在啟動(dòng)activity時(shí)需要傳遞的數(shù)據(jù)是什么
     */
    companion object {
        fun actionStart(context: Context, data1: String, data2: String) {
            val intent = Intent(context, SecondActivity::class.java)
            intent.putExtra("data1", data1)
            intent.putExtra("data2", data2)
            context.startActivity(intent)
        }
    }

SecondActivity.actionStart(this, "1111", "2222")