在你的应用程序开始检查可用的版本，你可以使用一个AlertDialog要求进行升级。

at the start of your app check the available version, the you can use an AlertDialog to ask for the upgrade.

阅读:: Is有没有办法在Android上自动更新的应用程序？

和这是一个AlertDialog例子::

and this is an AlertDialog example::

    if (ConfigXML_app_version> myapp_version){
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("Upgrade");
        builder.setMessage("Update available, ready to upgrade?");
        builder.setIcon(R.drawable.icon);
        builder.setCancelable(false);
        builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                Intent intent = new Intent(Intent.ACTION_VIEW ,Uri.parse(app_link));
                startActivity(intent);               
                finish();
            }
        });
        builder.setNegativeButton("Nop", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                dialog.cancel();
            }
        });
        AlertDialog alert = builder.create();
        alert.show();

    }