Android studio拍摄照片并保存

我尝试拍摄一张照片，然后将其保存到应用程序中，这样我就可以在那个里显示它并存储在一些列表视图中

package com.example.courses

import android.content.Intent
import android.os.Bundle
import android.provider.MediaStore
import android.support.v7.app.AppCompatActivity
import android.view.Menu
import android.view.MenuItem
import android.widget.Toast

class MainActivity : AppCompatActivity(), ListFragment.Updater {

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val takePictureIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
        if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
            Toast.makeText(this, "smile ... taking picture", Toast.LENGTH_LONG).show()
            startActivityForResult(takePictureIntent, 690)
        } else {
            Toast.makeText(this, "sorry .. no picture", Toast.LENGTH_LONG).show()
        }
    }

---

这段代码有效，因为确实需要创建图片。但是，我不确定，一旦创建了这个图片，我在哪里可以访问它，或者哪个变量在创建之后存储它，以及我如何实际访问这个变量以显示图像。您能告诉我一些想法吗？

当您从文件管理器捕获图像或访问任何其他文件时，所有结果都可以通过onActivityResult（）方法捕获，如下所示：

class MainActivity : AppCompatActivity(), ListFragment.Updater {

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    val takePictureIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        Toast.makeText(this, "smile ... taking picture", Toast.LENGTH_LONG).show()
        startActivityForResult(takePictureIntent, 690)
    } else {
        Toast.makeText(this, "sorry .. no picture", Toast.LENGTH_LONG).show()
    }


    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
when(requestCode) {
    690 -> {
        if (resultCode == Activity.RESULT_OK && data != null) {
            imageView.setImageBitmap(data.extras.get("data") as Bitmap)
        }
    }
    else -> {
        Toast.makeText(this, "Unrecognized request code", Toast.LENGTH_SHORT)
    }
   }
 }
}