5.15

今天写了安卓的部分模块代码

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); // 初始化视图 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); // 假设数据通过intent传递或从数据库中获取 String name = "张三"; String position = "经理"; String age = "35"; String reason = "出差"; String dates = "2024-05-01 至 2024-05-10"; // 回显数据 textViewName.setText(name); textViewPosition.setText(position); textViewAge.setText(age); textViewReason.setText(reason); textViewDates.setText(dates); // 添加TextWatchers以便在值变化时计算总金额 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); // 提交按钮点击事件 submitButton.setOnClickListener(v -> { // 这里可以添加提交逻辑，例如保存到数据库 Toast.makeText(ExpenseReportActivity.this, "报销单提交成功", Toast.LENGTH_SHORT).show(); }); } private void calculateTotalAmount() { double foodAllowance = getDoubleFromEditText(editTextFoodAllowance); // 其他费用如果有的话可以在这里获取并相加 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; } }