android - 单键多 Action 顺序

Question

我正在使用一个按钮来完成两项任务。

1.日期选择2.两个日期之间的差异

原样:

我正在为两个按钮使用“onclick”方法。

1. btnDate2用于选择日期和onclick是(setDate2)
2. button9 用于计算两个日期和onclick 之间的差异是(diff)

future :

一个按钮用于选择日期并计算两个日期之间的差异。并且它应该是顺序的。例如:1:选择日期2.计算日期之间的差异

当前代码:主 Activity .java

package com.bar.example.myapplication;

import android.app.DialogFragment;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.format.DateFormat;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import org.threeten.bp.LocalDate;
import org.threeten.bp.format.DateTimeFormatter;
import org.threeten.bp.format.DateTimeParseException;
import org.threeten.bp.temporal.ChronoUnit;
import java.text.SimpleDateFormat;

public class MainActivity extends AppCompatActivity {


  public TextView txtResult, tv, textDivNumber, textAVG, txtZaMisiac;
  public static TextView tvresult;
  public Button reset, button, button1, button2, button9, editTextDate3, editTextDate5, btnok;
  public EditText barcodeResult;
  public static EditText courseTitleEditText;
  private ListView offeringsListView;

  private static DateTimeFormatter dateFormatter = DateTimeFormatter.ofPattern("d.M.uuuu");


  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);
    editTextDate5 = (Button) findViewById(R.id.editText5);
    button2 = (Button) findViewById(R.id.btnDate2);
    txtResult = (TextView) findViewById(R.id.editText2);
    editTextDate5.setText(DateFormat.format("dd.MM.yyyy", new java.util.Date()).toString());
  }
  public void diff(View view) {
    SimpleDateFormat myFormat = new SimpleDateFormat("dd.MM.yyyy");
    CharSequence inputString1 = editTextDate5.getText();
    try {
      LocalDate date1 = LocalDate.parse(inputString1, dateFormatter);
      CharSequence inputString2 = button2.getText();
      try {
        LocalDate date2 = LocalDate.parse(inputString2, dateFormatter);
        long diffDate = ChronoUnit.DAYS.between(date1, date2);
        txtResult.setText(String.valueOf(diffDate));
      } catch (DateTimeParseException dtpe) {
        Toast.makeText(this, "Date2 is not a valid date: " + inputString2, Toast.LENGTH_SHORT).show();
      }
    } catch (DateTimeParseException dtpe) {
      Toast.makeText(this, "Date1 is not a valid date: " + inputString1, Toast.LENGTH_SHORT).show();
    }
  }

  public void setDate1(View view) {
    DialogFragment newFragment = new DatePickerFragment();
    newFragment.show(getFragmentManager(), "Date Picker");
  }
  public void setDate2(View view) {
    DialogFragment newFragment = new DatePickerFragment2();
    newFragment.show(getFragmentManager(), "Date Picker");
  }

  @Override
  public void onPointerCaptureChanged(boolean hasCapture) {

  }
}

日期选择器格式2.java

package com.bar.example.myapplication;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.os.Bundle;
import android.widget.Button;
import android.widget.DatePicker;
import java.util.Calendar;

public class DatePickerFragment2 extends DialogFragment implements DatePickerDialog.OnDateSetListener {

  @Override
  public Dialog onCreateDialog(Bundle savedInstanceState) {

    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);
    return new DatePickerDialog(getActivity(), this, year, month, day);
  }

  public void onDateSet(DatePicker view, int year, int month, int day) {
    Button btnDate2 = (Button) getActivity().findViewById(R.id.btnDate2);
    String stringOfDate = day + "." + (month + 1) + "." + year;
    btnDate2.setText(stringOfDate);
  }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical">

  <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:weightSum="1">

    <TextView android:id="@+id/editText1" android:layout_width="47dp" android:layout_height="wrap_content" android:ems="10" android:inputType="textNoSuggestions" android:text="Date:" />

    <Button android:id="@+id/editText5" android:layout_width="47dp" android:layout_height="wrap_content" android:layout_weight="0.50" android:ems="10" android:inputType="textNoSuggestions" android:text="" />

    <TextView android:id="@+id/editText2" android:layout_width="49dp" android:layout_height="wrap_content" android:ems="10" android:inputType="textNoSuggestions" android:text="Expiry:" />

    <Button android:id="@+id/btnDate2" android:layout_width="59dp" android:layout_height="wrap_content" android:layout_weight="0.41" android:ems="10" android:onClick="setDate2" android:text="" />

    <Button android:id="@+id/button9" android:layout_width="59dp" android:layout_height="wrap_content" android:layout_weight="0.41" android:ems="10" android:inputType="textNoSuggestions" android:onClick="diff" android:text="calc" />
  </LinearLayout>

修改后的代码。

第一次点击，

选择确定后。

现在我应该再次单击计算按钮以了解天数差异。

我需要的是第一次单击日期并在选择日期时选择“确定”。我应该能够在按屏幕单击“确定”而不是再次按下按钮后看到天数差异。

要求 3:

当 edittext2 数量超过 spinner2 数量时，edittext2 颜色应将其更改为红色和一些 doast 消息

当 edittext2 数字非常接近 spinner2 数字时，edittext2 颜色应将其更改为黄色和一些 doast 消息

Answer 1

1.在MainActivity.java中添加如下方法:

public void dualFunctions(View view) {
    if(view.getTag() == null) view.setTag("0");
    if(view.getTag().equals("0")){
        view.setTag("1");
        view.setBackgroundColor(Color.GREEN);
        setDate2(view);
    }else{
        view.setTag("0");  // Remove this line for one shoot.
        view.setBackgroundColor(Color.YELLOW);
        diff(view);
    }
}

2.更改布局中的按钮以使用此方法。

该方法在日期选择和计算之间切换。如果只允许一次日期选择，则删除带有注释的行。

希望对您有所帮助!

更新:

public void onDateSet(DatePicker view, int year, int month, int day) {
    Button btnDate2 = (Button) getActivity().findViewById(R.id.btnDate2);
    String stringOfDate = day + "." + (month + 1) + "." + year;
    btnDate2.setText(stringOfDate);
    MainActivity activity = (MainActivity)getActivity();
    activity.diff(btnDate2);
}

对于要求 3:

添加了 if-else 以检查条件。

private final static int VERY_NEAR_DATE = 30;

public void diff(View view) {
    SimpleDateFormat myFormat = new SimpleDateFormat("dd.MM.yyyy");
    CharSequence inputString1 = editTextDate5.getText();
    try {
        LocalDate date1 = LocalDate.parse(inputString1, dateFormatter);
        CharSequence inputString2 = button2.getText();
        try {
            LocalDate date2 = LocalDate.parse(inputString2, dateFormatter);
            long diffDate = ChronoUnit.DAYS.between(date1, date2);
            txtResult.setText(String.valueOf(diffDate));

            diffDate = (Long)ok2.getSelectedItem() - diffDate;
            if(diffDate < 0){
                txtResult.setTextColor(Color.RED);
                Toast.makeText(this, "Date not allowed!!", Toast.LENGTH_SHORT).show();
            }else if(diffDate < VERY_NEAR_DATE) {
                txtResult.setTextColor(Color.YELLOW);
                Toast.makeText(this, "Date too near!", Toast.LENGTH_SHORT).show();
            }

        } catch (DateTimeParseException dtpe) {
            Toast.makeText(this, "Date2 is not a valid date: " + inputString2, Toast.LENGTH_SHORT).show();
        }
    } catch (DateTimeParseException dtpe) {
        Toast.makeText(this, "Date1 is not a valid date: " + inputString1, Toast.LENGTH_SHORT).show();
    }
}

如果需要在微调器中更改选择后更新 View ，则在 onCreate() 中添加以下代码:

    ok2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            diff(null);
        }
        @Override
        public void onNothingSelected(AdapterView<?> parent) {}
    });