Java 在android studio中不使用DatePickeView读取选定日期
我是Parvanshu Sharma，我是编程初学者，我正在制作一个应用程序，其中 我已经这样做了，点击按钮时会出现一个日期选择器对话框，按钮文本将被设置为用户选择的，目前有3个按钮用于此，我甚至有一个实时数据库用于在Firebase上上载此日期，但现在我在获取每个唯一日期并上载时遇到问题，我无法获取所选日期 就像我的每个问题一样- MainActivity.java（太大了，所以我没有显示导入）Java 在android studio中不使用DatePickeView读取选定日期,java,android,class,android-dialogfragment,Java,Android,Class,Android Dialogfragment,我是Parvanshu Sharma，我是编程初学者，我正在制作一个应用程序，其中 我已经这样做了，点击按钮时会出现一个日期选择器对话框，按钮文本将被设置为用户选择的，目前有3个按钮用于此，我甚至有一个实时数据库用于在Firebase上上载此日期，但现在我在获取每个唯一日期并上载时遇到问题，我无法获取所选日期 就像我的每个问题一样- MainActivity.java（太大了，所以我没有显示导入） 尝试使用接口。你将在你的主要活动中有所有3个日期，现在你可以用它们做任何事情 public cla
尝试使用接口。你将在你的主要活动中有所有3个日期，现在你可以用它们做任何事情
public class DatePickerFragment extends DialogFragment {
private static applyDate mInterface;
private static int buttonNumberHere;
public interface applyDate {
void setDate(int selectedYear, int selectedMonth, int selectedDay, int buttonNumber);
}
public static DatePickerFragment newInstance(int buttonNumber, applyDate context)
{
DatePickerFragment fragment = new DatePickerFragment();
mInterface = ((applyDate) context);
buttonNumberHere = buttonNumber;
return fragment;
}
@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int day = c.get(Calendar.DAY_OF_MONTH);
return new DatePickerDialog(getContext(), datePickerListener, year, month, day);
}
private DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int selectedYear,
int selectedMonth, int selectedDay) {
mInterface.setDate(selectedYear, selectedMonth, selectedDay, buttonNumberHere);
}
};
public class MainActivity extends AppCompatActivity implements applyDate, AdapterView.OnItemSelectedListener {
String CurrentDateString;
TextView mainDate;// Idk what is this
Integer OrderQuantity = 3;
String itemOneDate;
String itemTwoDate;
String itemThreeDate;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button SelectDate1 = findViewById(R.id.SelectDateButton1);
Button SelectDate2 = findViewById(R.id.SelectDateButton2);
Button SelectDate3 = findViewById(R.id.SelectDateButton3);
SelectDate1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DatePickerFragment datePicker = DatePickerFragment.newInstance(1, MainActivity.this);
datePicker.show(getSupportFragmentManager(), "Pick item order date");
mainDate = SelectDate1;
}
});
SelectDate2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DatePickerFragment datePicker = DatePickerFragment.newInstance(2, MainActivity.this);
datePicker.show(getSupportFragmentManager(), "Pick item order date");
mainDate = SelectDate2;
}
});
SelectDate3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DatePickerFragment datePicker = DatePickerFragment.newInstance(3, MainActivity.this);
datePicker.show(getSupportFragmentManager(), "Pick item order date");
mainDate = SelectDate3;
}
});
ArrayAdapter<CharSequence> FoodAdapter = ArrayAdapter.createFromResource(this, R.array.FoodList, android.R.layout.simple_spinner_item);
FoodAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
Spinner SelectItem1 = findViewById(R.id.SelectItem1);
SelectItem1.setAdapter(FoodAdapter);
SelectItem1.setOnItemSelectedListener(this);
Spinner SelectItem2 = findViewById(R.id.SelectItem2);
SelectItem2.setAdapter(FoodAdapter);
SelectItem2.setOnItemSelectedListener(this);
Spinner SelectItem3 = findViewById(R.id.SelectItem3);
SelectItem3.setAdapter(FoodAdapter);
SelectItem3.setOnItemSelectedListener(this);
ArrayAdapter<CharSequence> QuantityAdapter = ArrayAdapter.createFromResource(this, R.array.Quantity, android.R.layout.simple_spinner_item);
QuantityAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
Spinner Quantity1 = findViewById(R.id.SelectQuantity1);
Quantity1.setAdapter(QuantityAdapter);
Quantity1.setOnItemSelectedListener(this);
Spinner Quantity2 = findViewById(R.id.SelectQuantity2);
Quantity2.setAdapter(QuantityAdapter);
Quantity2.setOnItemSelectedListener(this);
Spinner Quantity3 = findViewById(R.id.SelectQuantity3);
Quantity3.setAdapter(QuantityAdapter);
Quantity3.setOnItemSelectedListener(this);
Button DoneButton = findViewById(R.id.DoneButton);
EditText PersonName = findViewById(R.id.PersonName);
EditText PersonPhone = findViewById(R.id.PersonPhone);
EditText PersonAddress = findViewById(R.id.PersonAddress);
FirebaseDatabase database = FirebaseDatabase.getInstance();
DoneButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Idk how to set date but now you have all three dates
DatabaseReference dateOne = database.getReference(itemOneDate + "/DateOne");
dateOne.setValue(itemOneDate);
DatabaseReference dateTwo = database.getReference(itemOneDate + "/DateTwo");
dateTwo.setValue(itemTwoDate);
DatabaseReference dateThree = database.getReference(itemThreeDate + "/DateThree");
dateThree.setValue(itemThreeDate);
DatabaseReference Name = database.getReference(PersonPhone.getText().toString() + "/Name");
Name.setValue(PersonName.getText().toString());
DatabaseReference Phone = database.getReference(PersonPhone.getText().toString() + "/Phone");
Phone.setValue(PersonPhone.getText().toString());
DatabaseReference Address = database.getReference(PersonPhone.getText().toString() + "/Address");
Address.setValue(PersonAddress.getText().toString());
if (Quantity1.getSelectedItem().toString().equals("0")) {
OrderQuantity -= 1;
}
if (Quantity2.getSelectedItem().toString().equals("0")) {
OrderQuantity -= 1;
}
if (Quantity3.getSelectedItem().toString().equals("0")) {
OrderQuantity -= 1;
}
DatabaseReference OrderQuantities = database.getReference(PersonPhone.getText().toString()+"/OrderQuantity");
OrderQuantities.setValue(OrderQuantity);
if (Quantity1.getSelectedItem().toString() != "0") {
//I want some solution HERE
}
}
});
}
@Override
public void setDate(int selectedYear, int selectedMonth, int selectedDay, int buttonNumber){
Calendar c = Calendar.getInstance();
c.set(Calendar.YEAR, selectedYear);
c.set(Calendar.MONTH, selectedMonth);
c.set(Calendar.DAY_OF_MONTH, selectedDay);
SimpleDateFormat format = new SimpleDateFormat("dd-MM-yyyy");
String CurrentDateString = format.format(c.getTime());
mainDate.setText(CurrentDateString);
if (buttonNumber == 1){
itemOneDate = CurrentDateString;
}
else if (buttonNumber == 2){
itemTwoDate = CurrentDateString;
}
else if (buttonNumber == 3){
itemThreeDate = CurrentDateString;
}
}
}
public类MainActivity扩展了AppCompativeActivity实现了applyDate、AdapterView.OnItemSelectedListener{
字符串CurrentDateString；
TextView mainDate；//Idk这是什么
整数OrderQuantity=3；
字符串itemOneDate；
字符串itemTwoDate；
字符串itemThreeDate；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
按钮SelectDate1=findViewById（R.id.SelectDateButton1）；
按钮SelectDate2=findViewById（R.id.SelectDateButton2）；
按钮SelectDate3=findViewById（R.id.SelectDateButton3）；
SelectDate1.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
DatePickerFragment datePicker=DatePickerFragment.newInstance（1，MainActivity.this）；
显示（getSupportFragmentManager（），“挑选项目订单日期”）；
mainDate=选择日期1；
}
});
SelectDate2.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
DatePickerFragment datePicker=DatePickerFragment.newInstance（2，MainActivity.this）；
显示（getSupportFragmentManager（），“挑选项目订单日期”）；
mainDate=选择日期2；
}
});
SelectDate3.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
DatePickerFragment datePicker=DatePickerFragment.newInstance（3，MainActivity.this）；
显示（getSupportFragmentManager（），“挑选项目订单日期”）；
mainDate=选择日期3；
}
});
ArrayAdapter FoodAdapter=ArrayAdapter.createFromResource（这个，R.array.FoodList，android.R.layout.simple\u微调器\u项）；
setDropDownViewResource（android.R.layout.simple\u微调器\u下拉菜单\u项）；
微调器SelectItem1=findViewById（R.id.SelectItem1）；
选择Item1.setAdapter（FoodAdapter）；
SelectItem1.setOnItemSelectedListener（此）；
微调器SelectItem2=findViewById（R.id.SelectItem2）；
选择Item2.setAdapter（FoodAdapter）；
SelectItem2.setOnItemSelectedListener（此）；
微调器SelectItem3=findViewById（R.id.SelectItem3）；
选择Item3.setAdapter（FoodAdapter）；
SelectItem3.setOnItemSelectedListener（此）；
ArrayAdapter QuantityAdapter=ArrayAdapter.createFromResource（这个，R.array.Quantity，android.R.layout.simple\u微调器\u项）；
QuantityAdapter.setDropDownViewResource（android.R.layout.simple\u微调器\u下拉菜单\u项）；
微调器数量1=findViewById（R.id.SelectQuantity1）；
Quantity1.设置适配器（QuantityAdapter）；
Quantity1.setOnItemSelectedListener（此）；
微调器数量2=findViewById（R.id.SelectQuantity2）；
Quantity2.设置适配器（QuantityAdapter）；
Quantity2.setOnItemSelectedListener（此）；
微调器数量3=findViewById（R.id.SelectQuantity3）；
Quantity3.设置适配器（QuantityAdapter）；
Quantity3.setOnItemSelectedListener（此）；
按钮DoneButton=findviewbyd（R.id.DoneButton）；
EditText PersonName=findViewById（R.id.PersonName）；
EditText PersonPhone=findViewById（R.id.PersonPhone）；
EditText PersonalAddress=findViewById（R.id.PersonalAddress）；
FirebaseDatabase=FirebaseDatabase.getInstance（）；
DoneButton.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
//Idk如何设置日期，但现在您有了所有三个日期
DatabaseReference dateOne=database.getReference（itemOneDate+“/dateOne”）；
dateOne.setValue（itemOneDate）；
DatabaseReference dateTwo=database.getReference（itemOneDate+“/dateTwo”）；
dateTwo.setValue（itemtowdate）；
DatabaseReference dateThree=database.getReference（itemThreeDate+“/dateThree”）；
dateThree.setValue（itemThreeDate）；
DatabaseReference Name=database.getReference（PersonPhone.getText（）.toString（）+“/Name”）；
Name.setValue（PersonName.getText（）.toString（））；
DatabaseReference Phone=database.getReference（PersonPhone.getText（）.toString（）+“/Phone”）；
setValue（PersonPhone.getText（）.toString（））；
DatabaseReference Address=database.getReference（PersonPhone.getText（）.toString（）+“/Address”）；
setValue（PersonAddress.getText（）.toString（））；
如果（Quantity1.getSelectedItem（）.toString（）.equ）
public class DatePickerFragment extends DialogFragment {
private static applyDate mInterface;
private static int buttonNumberHere;
public interface applyDate {
void setDate(int selectedYear, int selectedMonth, int selectedDay, int buttonNumber);
}
public static DatePickerFragment newInstance(int buttonNumber, applyDate context)
{
DatePickerFragment fragment = new DatePickerFragment();
mInterface = ((applyDate) context);
buttonNumberHere = buttonNumber;
return fragment;
}
@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int day = c.get(Calendar.DAY_OF_MONTH);
return new DatePickerDialog(getContext(), datePickerListener, year, month, day);
}
private DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int selectedYear,
int selectedMonth, int selectedDay) {
mInterface.setDate(selectedYear, selectedMonth, selectedDay, buttonNumberHere);
}
};
public class MainActivity extends AppCompatActivity implements applyDate, AdapterView.OnItemSelectedListener {
String CurrentDateString;
TextView mainDate;// Idk what is this
Integer OrderQuantity = 3;
String itemOneDate;
String itemTwoDate;
String itemThreeDate;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button SelectDate1 = findViewById(R.id.SelectDateButton1);
Button SelectDate2 = findViewById(R.id.SelectDateButton2);
Button SelectDate3 = findViewById(R.id.SelectDateButton3);
SelectDate1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DatePickerFragment datePicker = DatePickerFragment.newInstance(1, MainActivity.this);
datePicker.show(getSupportFragmentManager(), "Pick item order date");
mainDate = SelectDate1;
}
});
SelectDate2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DatePickerFragment datePicker = DatePickerFragment.newInstance(2, MainActivity.this);
datePicker.show(getSupportFragmentManager(), "Pick item order date");
mainDate = SelectDate2;
}
});
SelectDate3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DatePickerFragment datePicker = DatePickerFragment.newInstance(3, MainActivity.this);
datePicker.show(getSupportFragmentManager(), "Pick item order date");
mainDate = SelectDate3;
}
});
ArrayAdapter<CharSequence> FoodAdapter = ArrayAdapter.createFromResource(this, R.array.FoodList, android.R.layout.simple_spinner_item);
FoodAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
Spinner SelectItem1 = findViewById(R.id.SelectItem1);
SelectItem1.setAdapter(FoodAdapter);
SelectItem1.setOnItemSelectedListener(this);
Spinner SelectItem2 = findViewById(R.id.SelectItem2);
SelectItem2.setAdapter(FoodAdapter);
SelectItem2.setOnItemSelectedListener(this);
Spinner SelectItem3 = findViewById(R.id.SelectItem3);
SelectItem3.setAdapter(FoodAdapter);
SelectItem3.setOnItemSelectedListener(this);
ArrayAdapter<CharSequence> QuantityAdapter = ArrayAdapter.createFromResource(this, R.array.Quantity, android.R.layout.simple_spinner_item);
QuantityAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
Spinner Quantity1 = findViewById(R.id.SelectQuantity1);
Quantity1.setAdapter(QuantityAdapter);
Quantity1.setOnItemSelectedListener(this);
Spinner Quantity2 = findViewById(R.id.SelectQuantity2);
Quantity2.setAdapter(QuantityAdapter);
Quantity2.setOnItemSelectedListener(this);
Spinner Quantity3 = findViewById(R.id.SelectQuantity3);
Quantity3.setAdapter(QuantityAdapter);
Quantity3.setOnItemSelectedListener(this);
Button DoneButton = findViewById(R.id.DoneButton);
EditText PersonName = findViewById(R.id.PersonName);
EditText PersonPhone = findViewById(R.id.PersonPhone);
EditText PersonAddress = findViewById(R.id.PersonAddress);
FirebaseDatabase database = FirebaseDatabase.getInstance();
DoneButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Idk how to set date but now you have all three dates
DatabaseReference dateOne = database.getReference(itemOneDate + "/DateOne");
dateOne.setValue(itemOneDate);
DatabaseReference dateTwo = database.getReference(itemOneDate + "/DateTwo");
dateTwo.setValue(itemTwoDate);
DatabaseReference dateThree = database.getReference(itemThreeDate + "/DateThree");
dateThree.setValue(itemThreeDate);
DatabaseReference Name = database.getReference(PersonPhone.getText().toString() + "/Name");
Name.setValue(PersonName.getText().toString());
DatabaseReference Phone = database.getReference(PersonPhone.getText().toString() + "/Phone");
Phone.setValue(PersonPhone.getText().toString());
DatabaseReference Address = database.getReference(PersonPhone.getText().toString() + "/Address");
Address.setValue(PersonAddress.getText().toString());
if (Quantity1.getSelectedItem().toString().equals("0")) {
OrderQuantity -= 1;
}
if (Quantity2.getSelectedItem().toString().equals("0")) {
OrderQuantity -= 1;
}
if (Quantity3.getSelectedItem().toString().equals("0")) {
OrderQuantity -= 1;
}
DatabaseReference OrderQuantities = database.getReference(PersonPhone.getText().toString()+"/OrderQuantity");
OrderQuantities.setValue(OrderQuantity);
if (Quantity1.getSelectedItem().toString() != "0") {
//I want some solution HERE
}
}
});
}
@Override
public void setDate(int selectedYear, int selectedMonth, int selectedDay, int buttonNumber){
Calendar c = Calendar.getInstance();
c.set(Calendar.YEAR, selectedYear);
c.set(Calendar.MONTH, selectedMonth);
c.set(Calendar.DAY_OF_MONTH, selectedDay);
SimpleDateFormat format = new SimpleDateFormat("dd-MM-yyyy");
String CurrentDateString = format.format(c.getTime());
mainDate.setText(CurrentDateString);
if (buttonNumber == 1){
itemOneDate = CurrentDateString;
}
else if (buttonNumber == 2){
itemTwoDate = CurrentDateString;
}
else if (buttonNumber == 3){
itemThreeDate = CurrentDateString;
}
}
}