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();
             }
         });

     }

 }