private void btn1Click()//时间和日期{    TimePicker timePicker = (TimePicker) findViewById(R.id.timePicker1);    int hour = timePicker.getCurrentHour();    int min = timePicker.getCurrentMinute();          DatePicker datePicker = (DatePicker) findViewById(R.id.datePicker1);    int day = datePicker.getDayOfMonth();    int month = datePicker.getMonth() + 1;//月份从0开始计算    int year = datePicker.getYear();    TextView textView = (TextView) findViewById(R.id.textView1);    textView.setText(year + "-" + month + "-" + day + " " + hour + ":" + min);}