static int [] imageid ={
    R.drawable.ts1,
    R.drawable.ts2,
    R.drawable.ts3,
    R.drawable.ts4,
    R.drawable.ts5,
    R.drawable.ts6,
};

static int [] imageidgr ={
    R.drawable.g1,
    R.drawable.g2,
    R.drawable.g3,
};
    ImageButton bt1,bt2;
Random generator = new Random();

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.game);

    bt1=(ImageButton) findViewById(R.id.bt1);
    bt2=(ImageButton) findViewById(R.id.bt2);

    ArrayList<Object> lista = new ArrayList<>();
    lista.add(imageid[generator.nextInt(imageid.length)]);
    lista.add(imageidgr[generator.nextInt(imageidgr.length)]);

    Collections.shuffle(lista);

    bt1.setImageResource(lista.get(0));
    bt2.setImageResource(lista.get(1));

}

public void v1 (View view){

    if (???){Toast toast = Toast.makeText(getApplicationContext(),
                                 "Да!",
                                 Toast.LENGTH_SHORT);
    toast.setGravity(Gravity.CENTER, 0, 0);
    toast.show();}
    else if(???) {Toast toast = Toast.makeText(getApplicationContext(),
                                       "Нет!",
                                       Toast.LENGTH_SHORT);
        toast.setGravity(Gravity.CENTER, 0, 0);
        toast.show();}
}

bt1.setTag(lista.get(0))

if (Arrays.asList(imageid).contains(bt1.getTag())) ...