Android开发手记(9) DatePickerDialog 和 TimePickerDialog

1、DatePickerDialog

　　用于获取用户输入的日期信息。其原型为：

public DatePickerDialog(Contex contex, DatePickerDialog.OnDateSetListener callback, int year, int month, int day);

　　其中，year,month,day是传递给DatePickerDialog的初始值信息，然后通过OnDateSetListener来设置用户选择的日期。

DatePickerDialog dpDlg = new DatePickerDialog(MainActivity.this, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker datePicker, int i, int i1, int i2) {
year = i;
month = i1;
day = i2;
tvDate.setText(year + "-" + month + "-" + day);
}
},year,month,day);

　　


　　完整代码为：

import android.app.DatePickerDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;

import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {

private TextView tvDate;
private Button btnDateDlg;
private int year;
private int month;
private int day;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

tvDate = (TextView) findViewById(R.id.textView);
btnDateDlg = (Button) findViewById(R.id.button);
Calendar myCalendar = Calendar.getInstance(Locale.CHINA);
Date date = new Date();
myCalendar.setTime(date);

year = myCalendar.get(Calendar.YEAR);
month = myCalendar.get(Calendar.MONTH);
day = myCalendar.get(Calendar.DAY_OF_MONTH);
tvDate.setText(year + "-" + month + "-" + day);
btnDateDlg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
DatePickerDialog dpDlg = new DatePickerDialog(MainActivity.this, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker datePicker, int i, int i1, int i2) {
year = i;
month = i1;
day = i2;
tvDate.setText(year + "-" + month + "-" + day);
}
},year,month,day);
dpDlg.show();
}
});

}

}

2、TimePickerDialog

　　用于获取用户输入的日期信息。其原型为：

public TimePickerDialog(Contex contex, TimePickerDialog.OnTimeSetListener callback, int hour, int minute, boolean is24Hours);

　　其中，hour,minute是传递给TimePickerDialog的初始值信息，is24Hours表示是否为24小时制，然后通过OnTimeSetListener来设置用户选择的日期。

TimePickerDialog tpDlg = new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker timePicker, int i, int i1) {
hour = i;
minute = i1;
tvTime.setText(year + "-" + month + "-" + day + " " + hour + ":" + minute);
}
},hour, minute,true);
tpDlg.show();

　　


　　完整代码为：

import android.app.TimePickerDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.TimePicker;

import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {

private TextView tvTime;
private Button btnTimeDlg;
private int year;
private int month;
private int day;
private int hour;
private int minute;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

tvTime = (TextView) findViewById(R.id.textView);
btnTimeDlg = (Button) findViewById(R.id.button);
Calendar myCalendar = Calendar.getInstance(Locale.CHINA);
Date date = new Date();
myCalendar.setTime(date);

year = myCalendar.get(Calendar.YEAR);
month = myCalendar.get(Calendar.MONTH);
day = myCalendar.get(Calendar.DAY_OF_MONTH);
hour = myCalendar.get(Calendar.HOUR);
minute = myCalendar.get(Calendar.MINUTE);
tvTime.setText(year + "-" + month + "-" + day + " " + hour + ":" + minute);
btnTimeDlg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
TimePickerDialog tpDlg = new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker timePicker, int i, int i1) {
hour = i;
minute = i1;
tvTime.setText(year + "-" + month + "-" + day + " " + hour + ":" + minute);
}
},hour, minute,true);
tpDlg.show();
}
});

}

}