MainActivity.java

package student8.example.com.clock_tok;

import android.app.Activity;
import android.app.AlarmManager;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.util.Date;

public class MainActivity extends Activity {

    Button btn;
    TextView tv, tv2;
    Date date = new Date();
    AlarmManager am;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn = (Button) findViewById(R.id.button);
        tv = (TextView) findViewById(R.id.textView);
        tv2 = (TextView) findViewById(R.id.textView2);
        am = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
        am.setTime(date.getTime());

        tv2.setText(date.toString());
        date.setTime(date.getTime() + 10000);
        tv.setText(date.toString());

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent i = new Intent(MainActivity.this, SecondActivity.class);
                startActivity(i);
            }
        });
    }
}