fun installApk(apkPath: Uri?) {
    val intent = Intent()
    intent.action = Intent.ACTION_VIEW
    intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
    intent.setDataAndType(apkPath, "application/vnd.android.package-archive")
    builder.context.startActivity(intent)
}