5.17軟工日報

今天寫了安卓的部分模組程式碼

import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

public class ExpenseReportActivity extends AppCompatActivity {

    private TextView textViewName;
    private TextView textViewPosition;
    private TextView textViewAge;
    private TextView textViewReason;
    private TextView textViewDates;
    private EditText editTextStartDate;
    private EditText editTextStartPoint;
    private EditText editTextEndDate;
    private EditText editTextEndPoint;
    private EditText editTextFoodAllowance;
    private TextView textViewTotalAmount;
    private Button submitButton;

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

        // 初始化檢視
        textViewName = findViewById(R.id.textView_name);
        textViewPosition = findViewById(R.id.textView_position);
        textViewAge = findViewById(R.id.textView_age);
        textViewReason = findViewById(R.id.textView_reason);
        textViewDates = findViewById(R.id.textView_dates);
        editTextStartDate = findViewById(R.id.editText_start_date);
        editTextStartPoint = findViewById(R.id.editText_start_point);
        editTextEndDate = findViewById(R.id.editText_end_date);
        editTextEndPoint = findViewById(R.id.editText_end_point);
        editTextFoodAllowance = findViewById(R.id.editText_food_allowance);
        textViewTotalAmount = findViewById(R.id.textView_total_amount);
        submitButton = findViewById(R.id.submit_button);

        // 假設資料透過intent傳遞或從資料庫中獲取
        String name = "張三";
        String position = "經理";
        String age = "35";
        String reason = "出差";
        String dates = "2024-05-01 至 2024-05-10";

        // 回顯資料
        textViewName.setText(name);
        textViewPosition.setText(position);
        textViewAge.setText(age);
        textViewReason.setText(reason);
        textViewDates.setText(dates);

        // 新增TextWatchers以便在值變化時計算總金額
        TextWatcher textWatcher = new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {}

            @Override
            public void afterTextChanged(Editable s) {
                calculateTotalAmount();
            }
        };

        editTextFoodAllowance.addTextChangedListener(textWatcher);

        // 提交按鈕點選事件
        submitButton.setOnClickListener(v -> {
            // 這裡可以新增提交邏輯，例如儲存到資料庫
            Toast.makeText(ExpenseReportActivity.this, "報銷單提交成功", Toast.LENGTH_SHORT).show();
        });
    }

    private void calculateTotalAmount() {
        double foodAllowance = getDoubleFromEditText(editTextFoodAllowance);

        // 其他費用如果有的話可以在這裡獲取並相加
        double totalAmount = foodAllowance;
        textViewTotalAmount.setText(String.valueOf(totalAmount));
    }

    private double getDoubleFromEditText(EditText editText) {
        String text = editText.getText().toString();
        if (!text.isEmpty()) {
            try {
                return Double.parseDouble(text);
            } catch (NumberFormatException e) {
                return 0;
            }
        }
        return 0;
    }
}