Android Calendar

Android Calendar

TimeZone tx = TimeZone.getTimeZone("Asia/Tokyo");
Calendar d = Calendar.getInstance(tx);

または
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(activity_main);

        TextView tv0 = (TextView) findViewById(R.id.textView);
        TextView tv1 = (TextView) findViewById(R.id.textView2);
        TextView tv2 = (TextView) findViewById(R.id.textView3);
        TextView tv3 = (TextView) findViewById(R.id.textView4);
        TextView tv4 = (TextView) findViewById(R.id.textView5);
        TextView tv5 = (TextView) findViewById(R.id.textView6);
        TextView tv6 = (TextView) findViewById(R.id.textView7);
        TextView tv7 = (TextView) findViewById(R.id.textView8);
        TextView tv8 = (TextView) findViewById(R.id.textView9);

        Calendar c = Calendar.getInstance();
        tv1.setText(c.getTime().toString());

        tv2.setText(TimeZone.getDefault().getID().toString());
        tv3.setText(String.valueOf(c.get(Calendar.HOUR_OF_DAY)));
//        tv3.setText(String.valueOf(c.get(Calendar.HOUR)));        tv4.setText(String.valueOf(c.get(Calendar.MINUTE)));
        tv5.setText(String.valueOf(c.get(Calendar.SECOND)));
        tv6.setText(String.valueOf(c.get(Calendar.YEAR)));
        tv7.setText(String.valueOf(c.get(Calendar.MONTH)));
        tv8.setText(String.valueOf(c.get(Calendar.DATE)));

    }