在android studio中读取没有DatePickeView的选定日期 [英] Reading Selected Date without DatePickeView in android studio
本文介绍了在android studio中读取没有DatePickeView的选定日期的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我是 Parvanshu Sharma，我是编程初学者，我正在制作一个应用程序，其中我已经完成了在按钮点击一个日期选择器对话框将出现，按钮文本将被设置为用户选择的，目前有 3 个按钮，我什至有一个实时数据库用于在 Firebase 上上传这个日期，但现在我在获取每个唯一日期并上传时遇到问题，我无法获取所选日期.
I am Parvanshu Sharma and I am a beginner to programming, I am making an application in which I have done that on button click a date Picker dialog will appear and the button text will be set to the selected by the user, Currently there are 3 buttons for this and I even have a realtime database for uploading this date on Firebase, but now I am having problems in getting the every unique date and uploading it, I am not able to get the selected date.
正如我的每个计算器问题都有-
And as my every stackoverflow question has-
MainActivity.java(它太大了所以我没有显示导入)
MainActivity.java (Its too big so I haven't shown imports)
public class MainActivity extends AppCompatActivity implements DatePickerDialog.OnDateSetListener, AdapterView.OnItemSelectedListener {
String CurrentDateString;
TextView mainDate;
Integer OrderQuantity = 3;
@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) {
DialogFragment datePicker = new DatePickerFragment();
datePicker.show(getSupportFragmentManager(), "Pick item order date");
mainDate = SelectDate1;
}
});
SelectDate2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DialogFragment datePicker = new DatePickerFragment();
datePicker.show(getSupportFragmentManager(), "Pick item order date");
mainDate = SelectDate2;
}
});
SelectDate3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DialogFragment datePicker = new DatePickerFragment();
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) {
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 onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
Calendar c = Calendar.getInstance();
c.set(Calendar.YEAR, year);
c.set(Calendar.MONTH, month);
c.set(Calendar.DAY_OF_MONTH, dayOfMonth);
SimpleDateFormat format = new SimpleDateFormat("dd-MM-yyyy");
String CurrentDateString = format.format(c.getTime());
mainDate.setText(CurrentDateString);
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
}```
and here goes my activity_main.xml
```<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/NameTextView"
android:layout_width="93dp"
android:layout_height="wrap_content"
android:layout_marginStart="20sp"
android:layout_marginLeft="20sp"
android:layout_marginTop="10sp"
android:text="Name"
android:textColor="@color/black"
android:textSize="28sp"
android:textStyle="bold" />
<EditText
android:id="@+id/PersonName"
android:layout_width="320dp"
android:layout_height="wrap_content"
android:layout_marginStart="20sp"
android:layout_marginLeft="20sp"
android:ems="10"
android:hint="Name"
android:inputType="textPersonName" />
<TextView
android:id="@+id/PhoneTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20sp"
android:text="Mobile Number"
android:textColor="@color/black"
android:textSize="28sp"
android:textStyle="bold" />
<EditText
android:id="@+id/PersonPhone"
android:layout_width="325dp"
android:layout_height="wrap_content"
android:layout_marginLeft="20sp"
android:ems="10"
android:hint="Mobile number"
android:inputType="phone" />
<TextView
android:id="@+id/AddressTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20sp"
android:text="Address"
android:textColor="@color/black"
android:textSize="28sp"
android:textStyle="bold" />
<EditText
android:id="@+id/PersonAddress"
android:layout_width="328dp"
android:layout_height="wrap_content"
android:layout_marginLeft="20sp"
android:ems="10"
android:hint="Delivery Address"
android:inputType="textPostalAddress" />
<TextView
android:id="@+id/textView4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20sp"
android:text=" Order Details"
android:textColor="@color/black"
android:textSize="20sp"
android:textStyle="bold" />
<TableLayout
android:id="@+id/MainTable"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:stretchColumns="0,1,2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TableRow
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_margin="1dp"
android:layout_weight="1"
android:background="#000000"
>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_column="0"
android:layout_margin="1dp"
android:background="#FFFFFF"
android:gravity="center"
android:text=" Date "
android:textAppearance="?android:attr/textAppearanceLarge"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_column="1"
android:layout_margin="1dp"
android:background="#FFFFFF"
android:gravity="center"
android:text="Item"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_column="2"
android:layout_margin="1dp"
android:background="#FFFFFF"
android:gravity="center"
android:text="Quantity"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textStyle="bold" />
</TableRow>
<TableRow
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_margin="1dp"
android:layout_weight="1"
android:background="#000000">
<Button
android:id="@+id/SelectDateButton1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Select" />
<Spinner
android:id="@+id/SelectItem1"
android:layout_width="40dp"
android:layout_height="43dp"
android:layout_marginStart="3dp"
android:layout_marginLeft="3dp"
android:layout_marginEnd="2dp"
android:layout_marginRight="2dp"
android:background="@color/white"
android:gravity="center"
android:text="Select Item" />
<Spinner
android:id="@+id/SelectQuantity1"
android:layout_width="40dp"
android:layout_height="43dp"
android:background="@color/white"
android:gravity="center" />
</TableRow>
<TableRow
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_margin="1dp"
android:layout_weight="1"
android:background="#000000">
<Button
android:id="@+id/SelectDateButton2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Select" />
<Spinner
android:id="@+id/SelectItem2"
android:layout_width="40dp"
android:layout_height="43dp"
android:layout_marginStart="3dp"
android:layout_marginLeft="3dp"
android:layout_marginEnd="2dp"
android:layout_marginRight="2dp"
android:background="@color/white"
android:gravity="center"
android:text="Select Item" />
<Spinner
android:id="@+id/SelectQuantity2"
android:layout_width="40dp"
android:layout_height="43dp"
android:background="@color/white"
android:gravity="center" />
</TableRow>
<TableRow
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_margin="1dp"
android:layout_weight="1"
android:background="#000000">
<Button
android:id="@+id/SelectDateButton3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Select" />
<Spinner
android:id="@+id/SelectItem3"
android:layout_width="40dp"
android:layout_height="43dp"
android:layout_marginStart="3dp"
android:layout_marginLeft="3dp"
android:layout_marginEnd="2dp"
android:layout_marginRight="2dp"
android:background="@color/white"
android:gravity="center" />
<Spinner
android:id="@+id/SelectQuantity3"
android:layout_width="40dp"
android:layout_height="43dp"
android:background="@color/white"
android:gravity="center" />
</TableRow>
</TableLayout>
<Button
android:id="@+id/DoneButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Done" />
</LinearLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
我还有一个用于创建 DatePickerDialog 的类，我学习和实现如何制作 DatePickerDialog 的来源是这里
and I have one more class for creating DatePickerDialog, the source from where I learnt and implemented that how to make DatePickerDialog is Here
在这里 - (DatePickerFragment.java)
which goes here- (DatePickerFragment.java)
public class DatePickerFragment extends DialogFragment {
@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(getActivity(), (DatePickerDialog.OnDateSetListener) getActivity(), year, month, day);
}
}
推荐答案
尝试使用接口.您将拥有主要活动中的所有 3 个日期，现在您可以对它们进行任何操作
Tried using an interface. You will have all 3 dates in your main activity, now you can do whatever with them
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);
}
};
在主活动中
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;
}
}
}
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