mise à jour du mauvais champ textedit

Question

Pourriez-vous me prêter de nouveaux yeux et me dire ce que je devrais chercher pour trouver le chaînon manquant? J'essaie de faire un calcul hypothécaire en tirant de la valeur des champs purchasePrice, downPayment et interestRate EditText pour faire le calcul. J'ai testé le updateStandand() en définissant le champ TextEdit sur le taux d'intérêt. Toutefois, lorsque je lance l'application dans AVD, si je tape un prix d'achat, le champ de paiement mensuel refléterait le prix. Si je descends dans le champ de taux d'intérêt et que je saisis un nombre, le champ de paiement mensuel changerait à la valeur du taux d'intérêt.

Merci!

package com.example.mortgagecalc; 

import com.example.mortgagecalc.R.string; 

import android.os.Bundle; 
import android.app.Activity; 
import android.view.Menu; 
import android.text.TextWatcher; 
import android.widget.EditText; 
import android.widget.SeekBar; 
import android.widget.SeekBar.OnSeekBarChangeListener; 
import android.widget.TextView; 
import android.text.Editable; 
public class Main extends Activity { 

    private static final String PURCHASE_AMOUNT = "PURCHASE_AMOUNT"; 
    private static final String CUSTOM_LENGTH = "CUSTOM_LENGTH"; 
    private static final String DOWN_PAYMENT = "DOWN_PAYMENT"; 
    private static final String INTEREST_RATE = "INTEREST_RATE"; 

    private int currentPurchaseAmount; //purchase amount entered by user 
    private int currentCustomLength; //length of loan set with SeekBar 
    private int currentDownPayment; //down payment entered by user 
    private double currentInterestRate; //interest rate entered by user 
    private EditText purchaseAmountEditText; //accepts user input for purchase amount 
    private EditText downPaymentEditText; //accepts user input for down payment amount 
    private EditText interestRateEditText; //accepts user input for interest rate 
    private EditText tenYearEditText; //display monthly payment for 10yr. loan 
    private EditText twentyYearEditText; //display monthly payment for 20yr. loan 
    private EditText thirtyYearEditText; //display monthly payment for 30yr. loan 
    private EditText customMonthlyEditText; //display monthly payment for custom length 
    private TextView customLengthTextView; //display custom loan length 

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

     //check if app just started or being restored from memory 
     if (savedInstanceState == null) //app just started running 
     { 
      currentPurchaseAmount = 0; //initialize to zero 
      currentCustomLength = 10; //initialize custom loan length to 10 
      currentDownPayment = 0; //initialize to zero 
      currentInterestRate = 0.0; //initialize to zero 
     } 
     else 
     { 
      currentPurchaseAmount = savedInstanceState.getInt(PURCHASE_AMOUNT); 
      currentCustomLength = savedInstanceState.getInt(CUSTOM_LENGTH); 
      currentDownPayment = savedInstanceState.getInt(DOWN_PAYMENT); 
      currentInterestRate = savedInstanceState.getDouble(INTEREST_RATE); 
     } 

     purchaseAmountEditText = (EditText) findViewById(R.id.purchaseAmountEditText); 
     downPaymentEditText = (EditText) findViewById(R.id.downPaymentEditText); 
     interestRateEditText = (EditText) findViewById(R.id.interestRateEditText); 
     tenYearEditText = (EditText) findViewById(R.id.tenYearEditText); 
     twentyYearEditText = (EditText) findViewById(R.id.twentyYearEditText); 
     thirtyYearEditText = (EditText) findViewById(R.id.thirtyYearEditText); 
     customMonthlyEditText = (EditText) findViewById(R.id.customMonthlyEditText); 
     customLengthTextView = (TextView) findViewById(R.id.customMonthlyTextView); 

     purchaseAmountEditText.addTextChangedListener(textWatcher); 
     downPaymentEditText.addTextChangedListener(textWatcher); 
     interestRateEditText.addTextChangedListener(textWatcher); 
     SeekBar customSeekBar = (SeekBar) findViewById(R.id.customSeekBar); 
     customSeekBar.setOnSeekBarChangeListener(customSeekBarListener); 
    } 

    private void updateStandard(){ 

     double interestRate = currentInterestRate; 
     //double loanPrinciple = currentPurchaseAmount - currentDownPayment; 

     //double tenYearMonthlyPayment = loanPrinciple; 
     tenYearEditText.setText(String.valueOf(interestRate)); 

    } 

    private void updateCustom(){ 

     //customLengthTextView.setText(currentCustomLength + "year"); 
     double customInterestRate = ((currentInterestRate/12) * .01); 
     int customLoanPrinciple = currentPurchaseAmount - currentDownPayment; 
     double customMonthlyPayment = customLoanPrinciple * customInterestRate/
             (1-Math.pow(1+customInterestRate, -(currentCustomLength*12))); 
     customMonthlyEditText.setText(Double.toString(customMonthlyPayment)); 
    } 

    @Override 
    protected void onSaveInstanceState(Bundle outState){ 
     super.onSaveInstanceState(outState); 

     outState.putDouble(PURCHASE_AMOUNT, currentPurchaseAmount); 
     outState.putDouble(DOWN_PAYMENT, currentDownPayment); 
     outState.putDouble(INTEREST_RATE, currentInterestRate); 
     outState.putDouble(CUSTOM_LENGTH, currentCustomLength); 
    } 

    private OnSeekBarChangeListener customSeekBarListener = new OnSeekBarChangeListener(){ 

     @Override 
     public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) 
     { 
      currentCustomLength = seekBar.getProgress(); 
      updateCustom(); 
     } 

     @Override 
     public void onStartTrackingTouch(SeekBar seekBar) 
     { 
     } 

     @Override 
     public void onStopTrackingTouch(SeekBar seekBar) 
     { 
     } 
    }; 

    private TextWatcher textWatcher = new TextWatcher() 
    { 

     @Override 
     public void onTextChanged(CharSequence s, int start, int before, int count) 
     { 
      try 
      { 
       currentPurchaseAmount = Integer.parseInt(s.toString()); 
       currentDownPayment = Integer.parseInt(s.toString()); 
       currentInterestRate = Integer.parseInt(s.toString()); 
      } 
      catch(NumberFormatException e) 
      { 
       currentPurchaseAmount = 0; 
       currentDownPayment = 0; 
       currentInterestRate = 0.0; 
      } 

      updateStandard(); 
      updateCustom(); 
     } 

     @Override 
     public void afterTextChanged(Editable s) 
     { 
     } 

     @Override 
     public void beforeTextChanged(CharSequence s, int start, int count, int after) 
     { 
     } 
    }; 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 

} 

Answer 1

Vous utilisez un seul TextWatcher pour les trois champs, et mettre à jour tous les trois champs dans la méthode OnTextChanged.

Je suppose que ce que vous voulez vraiment, c'est trois instances distinctes de TextWatcher - une pour chaque champ, et pour mettre à jour seulement une de ces valeurs dans chacune.