如何在Android Q上程序化安装.apk？

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    boolean hasInstallPermission = getPackageManager().canRequestPackageInstalls();
    if (!hasInstallPermission) {
        // 请求安装未知来源应用的权限
        Intent intent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES);
        intent.setData(Uri.parse("package:" + getPackageName()));
        startActivityForResult(intent, REQUEST_CODE_INSTALL_PERMISSION);
        return;
    }
}

File apkFile = new File(apkFilePath);
Uri apkUri = FileProvider.getUriForFile(context, "com.example.fileprovider", apkFile);

Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
intent.setData(apkUri);
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);

startActivityForResult(intent, REQUEST_CODE_INSTALL);

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == REQUEST_CODE_INSTALL) {
        if (resultCode == RESULT_OK) {
            // 安装成功
        } else {
            // 安装失败
        }
    }
}