时间选择器：DatePicker和TimePicker

时间选择器：DatePicker和TimePicker

Android开发常常会遇到选择日期时间的场景，Google为我们提供了现成的系统公共控件调用。至于时间使用Java标准API即可获取想要的，可以参考Java日期：Date、Calendar及DateFormat格式化。

1、日期选择器DatePickerDialog

Calendar calendar = Calendar.getInstance();
            DatePickerDialog datePickerDialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
                @Override
                public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
                    Toast.makeText(MainActivity.this, "选择的日期是：" + year + "年" + month + "月" + dayOfMonth + "日", Toast.LENGTH_SHORT).show();
                }
            }, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH));
            datePickerDialog.show();

2、时间选择器：TimePickerDialog

Calendar calendar = Calendar.getInstance();
            TimePickerDialog timePickerDialog = new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {
                @Override
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    Toast.makeText(MainActivity.this, "选择的时间是：" + hourOfDay + "时" + minute + "分", Toast.LENGTH_SHORT).show();
                }
            }, calendar.get(Calendar.HOUR_OF_DAY), calendar.get(Calendar.MINUTE), true);
            timePickerDialog.show();