I create simple Android app (https://www.linux.com/learn/docs/683628-android-programming-for-beginners-part-1) with latest Android Studio. Code: public class test_act extends Activity { private static final int MILLIS_PER_SECOND = 1000; private static final int SECONDS_TO_COUNTDOWN = 30; private android.widget.TextView countdownDisplay; private android.os.CountDownTimer timer; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.full_act); countdownDisplay = (android.widget.TextView) findViewById(R.id.time_display_box); android.widget.Button startButton = (android.widget.Button) findViewById(R.id.startbutton); startButton.setOnClickListener(new [...]
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