Android Studio 日期选择器 及日期对话框
activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout

    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >

    <TextView
        android:text="Hello World!"
        android:layout_gravity="center"
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <DatePicker
        android:layout_marginTop="50dp"
        android:layout_gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <Button
        android:layout_gravity="center"
        android:layout_marginTop="10dp"
        android:text="按钮"
        android:id="@+id/bt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

MainActivity.java

package com.easybooks.myapplication;

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;

import android.app.DatePickerDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity {

    private TextView textView;
    private Button button;
    private String decs;

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

        textView = findViewById(R.id.tv);
        button = findViewById(R.id.bt);

        button.setonClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Calendar calendar = Calendar.getInstance();

                DatePickerDialog dialog = new DatePickerDialog(MainActivity.this,
                        new DatePickerDialog.OnDateSetListener() {
                            @Override
                            public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {

                                 decs = String.format("%d %d %d", year, month, dayOfMonth);

                            }
                        },
                        calendar.get(Calendar.YEAR),
                        calendar.get(Calendar.MONTH),
                        calendar.get(Calendar.DAY_OF_MONTH));

                dialog.show();
                textView.setText(decs);

            }
        });


        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("hello world");
        builder.setMessage("hello world");
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {

            }
        });

        AlertDialog alter = builder.create();
        alter.show();


    }
}

android – 仍然能够选择日期选择器中的禁用日期

dialog.getDatePicker().setMinDate(System.currentTimeMillis() - 1000);

@Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current date as the default date in the picker
        final Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DAY_OF_MONTH);
        mActivity = new WeakReference<CreateEvent>(
                (CreateEvent) getActivity());

        DatePickerDialog dialog = new DatePickerDialog(getActivity(),this,year,month,day);

        if(callingView==fromDate){
            dialog.getDatePicker().setMinDate(System.currentTimeMillis() - 1000);
        }else if (callingView==toDate){
            dialog.getDatePicker().setMinDate(fromD);
        }

        // Create a new instance of DatePickerDialog and return it
        return dialog;
    }

android – 具有默认日期的日期选择器

在我的应用程序中,我使用日期选择器为用户选择日期.所以我在我的应用程序中使用数据库,如果用户选择1个特定项目意味着我将获取与该项目相关的数据,我将在另一个屏幕中显示它,因为它将有1个开始日期,我必须将该日期作为日期选择器中的默认日期加载..但是它将当前日期作为默认日期加载而不是从数据库中提取的日期..请帮助我..提前谢谢.

我的代码：

 c = Calendar.getInstance();               
               SimpleDateFormat sdf=new SimpleDateFormat("yyyy/MM/dd");
               System.out.println("After format");
               Date pickdefdate=null;
//             String pickdefdatepar=null;
               try {
                   System.out.println("Inside try="+date);
              pickdefdate=sdf.parse(date);              ----------->date which is fetched from database.
              System.out.println("dddddddd="+pickdefdate);

              c.setTime(pickdefdate);    --------------------->Setting this date as current date..
              System.out.println("After parse");
            } catch (ParseException e) {
                // Todo Auto-generated catch block
                e.printstacktrace();
            }           
               mYear = c.get(Calendar.YEAR);             ----------as u said i am setting this value before dialog.
               mMonth = c.get(Calendar.MONTH);
               mDay = c.get(Calendar.DAY_OF_MONTH);     
               showDialog(DATE_DIALOG_ID);



 protected Dialog onCreateDialog(int id) 
     {
            switch (id) {
            case DATE_DIALOG_ID:
                System.out.println("in dia="+mDay);
                return new DatePickerDialog(this, mDateSetListener, mYear, mMonth, mDay);
            }
            return null;
        }    

     private DatePickerDialog.OnDateSetListener mDateSetListener =
                new DatePickerDialog.OnDateSetListener() {
                    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                        System.out.println("Inside dia");
                        mYear = year;
                        mMonth = monthOfYear;
                        mDay = dayOfMonth;
                    }
            };

解决方法:

采用

    date_picker_dialog.updateDate(year, month - 1, date);

每当您想将现有日期更新为日期选择器时.

如果要在创建日期选择器时设置任何日期,则可以覆盖oncreatedialog

    @Override
    protected Dialog onCreateDialog(int id)
    {
        switch (id) {
            case DATE_DIALOG_ID:
                date_picker_dialog = new DatePickerDialog(this, get_date, year, month - 1, date);
                return date_picker_dialog;
        }
    }

希望它会对你有所帮助.如果你遇到任何问题,你可以问.

android – 日期选择器对话框显示编辑文本双击

package com.example.firstdemoapp.activities;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;

import com.example.firstdemoapp.R;
import com.example.firstdemoapp.model.StatusDK;

import android.app.Activity;
import android.app.DatePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.Spinner;

public class SearchingTaxActivity extends Activity implements OnClickListener,DatePickerDialog.OnDateSetListener,OnItemSelectedListener {

private Calendar calendarFrom;
private Calendar calendarTo;
private String myFormat;
private SimpleDateFormat sdf;
private EditText dateFrom;
private EditText dateto;

private EditText activeEditText;
private Calendar activeCalendar;

private Spinner spinnerStatusDK;
private ArrayAdapter spinnerArrayAdapter;

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

    calendarFrom = Calendar.getInstance();
    calendarTo = Calendar.getInstance();
    myFormat="dd/MM/yyyy";
    sdf = new SimpleDateFormat(myFormat,Locale.US);

    dateFrom = (EditText) findViewById(R.id.dateFrom);
    dateto = (EditText) findViewById(R.id.dateto);
    spinnerStatusDK=(Spinner)findViewById(R.id.spinnerStatusDK);
    spinnerArrayAdapter = new ArrayAdapter(this,android.R.layout.simple_spinner_item,new StatusDK[] {   
                    new StatusDK( 0,"0" ),new StatusDK( 1,"1" ),new StatusDK( 2,"2" ),});

    spinnerStatusDK.setAdapter(spinnerArrayAdapter); 
    spinnerStatusDK.setonItemSelectedListener(this);
    dateFrom.setonClickListener(this);
    dateto.setonClickListener(this);
}

@Override
public void onClick(View v) {
    // Todo Auto-generated method stub
    if (v == dateFrom) {
        activeCalendar = calendarFrom;
        activeEditText = dateFrom;
    } else if (v == dateto) {
        activeCalendar = calendarTo;
        activeEditText = dateto;
    }
    new DatePickerDialog(SearchingTaxActivity.this,this,activeCalendar.get(Calendar.YEAR),activeCalendar.get(Calendar.MONTH),activeCalendar.get(Calendar.DAY_OF_MONTH)).show();



}

@Override
public void onDateSet(DatePicker view,int year,int monthOfYear,int dayOfMonth) {
    // Todo Auto-generated method stub
    activeCalendar.set(Calendar.YEAR,year);
    activeCalendar.set(Calendar.MONTH,monthOfYear);
    activeCalendar.set(Calendar.DAY_OF_MONTH,dayOfMonth);

    if (activeEditText != null) {
        activeEditText.setText(sdf.format(activeCalendar.getTime()));
    }

}

@Override
public void onItemSelected(AdapterView<?> arg0,View arg1,int arg2,long arg3) {
    // Todo Auto-generated method stub

}

@Override
public void onnothingSelected(AdapterView<?> arg0) {
    // Todo Auto-generated method stub

}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="${relativePackage}.${activityClass}" >

<TextView android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="@string/dateFromTextView"
            />
<EditText
    android:id="@+id/dateFrom"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10"
    android:hint="@string/edit_datefrom"
     />

<TextView android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="@string/datetoTextView"
            />
<EditText
    android:id="@+id/dateto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10"
    android:hint="@string/edit_dateto"
     />

<Spinner
    android:id="@+id/spinnerStatusDK"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

我们今天的关于Android仿Boss直聘文本日期混合滚轮选择器示例的分享已经告一段落，感谢您的关注，如果您想了解更多关于Android Studio 日期选择器 及日期对话框、android – 仍然能够选择日期选择器中的禁用日期、android – 具有默认日期的日期选择器、android – 日期选择器对话框显示编辑文本双击的相关信息，请在本站查询。