如何将位图保存到外部存储(Kotlin)？

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

val bitmap: Bitmap = ...
val file = File(Environment.getExternalStorageDirectory(), "image.jpg")

if (Environment.getExternalStorageState() != Environment.MEDIA_MOUNTED) {
    // 外部存储不可用
    return
}

try {
    val outputStream = FileOutputStream(file)
    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)
    outputStream.flush()
    outputStream.close()
} catch (e: IOException) {
    e.printStackTrace()
}

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />