From a8751388c9a86ae95714a15279994d8aa426a26d Mon Sep 17 00:00:00 2001
From: zuoxiao <470321431@qq.com>
Date: 星期五, 13 六月 2025 14:59:02 +0800
Subject: [PATCH] feat(generallibrary): 优化充值功能并添加水价获取- 在 activity_recharge_detail.xml 中移除了不必要的 bold 样式- 在 EditText 中添加了金额输入限制（数字和小数点）- 在 BaseApplication 中添加了水价信息存储 - 在 MainActivity 中实现了延时获取水价的功能- 优化了 RechargeDetailActivity 中的水价检查和使用逻辑 - 在 README.md 中添加了金额格式化和水价获取的最佳实践指南
---
README.md | 583 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 583 insertions(+), 0 deletions(-)
diff --git a/README.md b/README.md
index 10c21e2..dee3b50 100644
--- a/README.md
+++ b/README.md
@@ -741,6 +741,589 @@
- 閿欒淇℃伅浣跨敤甯︽爣棰樼殑Dialog锛屾彁渚涙竻鏅扮殑閿欒鍒嗙被
- 闀挎椂闂存搷浣滄樉绀哄姞杞紻ialog锛岄伩鍏嶇敤鎴疯鎿嶄綔
+### 閲戦鏍煎紡鍖栨渶浣冲疄璺�
+
+鍦ㄥ鐞嗛噾棰濈浉鍏崇殑鏁版嵁鏃讹紝搴旇缁熶竴浣跨敤涓や綅灏忔暟鏍煎紡锛岀‘淇濇樉绀虹殑涓�鑷存�у拰鍑嗙‘鎬с��
+
+#### 閲戦鏍煎紡鍖栨柟娉�
+
+```kotlin
+// 浣跨敤String.format鏍煎紡鍖栭噾棰濅负涓や綅灏忔暟
+val amount = 123.4
+val formattedAmount = String.format("%.2f", amount)
+// 缁撴灉: "123.40"
+
+// 鍦ㄦ樉绀烘椂娣诲姞璐у竵鍗曚綅
+binding.balanceText.text = "${formattedAmount} 鍏�"
+```
+
+#### 閲戦杈撳叆楠岃瘉
+
+```kotlin
+private fun validateAmount(amountStr: String): Double? {
+ if (amountStr.isEmpty()) {
+ ToastUtil.show("璇疯緭鍏ラ噾棰�")
+ return null
+ }
+
+ val amount = try {
+ amountStr.toDouble()
+ } catch (e: NumberFormatException) {
+ ToastUtil.show("璇疯緭鍏ユ湁鏁堢殑閲戦")
+ return null
+ }
+
+ if (amount <= 0) {
+ ToastUtil.show("閲戦蹇呴』澶т簬0")
+ return null
+ }
+
+ // 妫�鏌ュ皬鏁颁綅鏁颁笉瓒呰繃2浣�
+ val decimalPlaces = amountStr.substringAfter('.', "").length
+ if (decimalPlaces > 2) {
+ ToastUtil.show("閲戦鏈�澶氫繚鐣欎袱浣嶅皬鏁�")
+ return null
+ }
+
+ return amount
+}
+```
+
+#### 閲戦璁＄畻鍜屾樉绀虹ず渚�
+
+```kotlin
+private fun calculateAndDisplayAmounts() {
+ val rechargeAmount = validateAmount(binding.rechargeAmount.text.toString()) ?: return
+ val bonusAmount = validateAmount(binding.bonusAmount.text.toString()) ?: 0.0
+
+ // 璁＄畻鎬婚噾棰�
+ val totalAmount = rechargeAmount + bonusAmount
+
+ // 鏍煎紡鍖栨樉绀�
+ val formattedRecharge = String.format("%.2f", rechargeAmount)
+ val formattedBonus = String.format("%.2f", bonusAmount)
+ val formattedTotal = String.format("%.2f", totalAmount)
+
+ // 鏇存柊UI鏄剧ず
+ binding.rechargeAmountText.text = "${formattedRecharge} 鍏�"
+ binding.bonusAmountText.text = "${formattedBonus} 鍏�"
+ binding.totalAmountText.text = "${formattedTotal} 鍏�"
+}
+```
+
+#### EditText閲戦杈撳叆闄愬埗
+
+鍦ㄥ竷灞�鏂囦欢涓缃噾棰濊緭鍏ョ殑闄愬埗锛�
+
+```xml
+<EditText
+ android:id="@+id/amountEditText"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:inputType="numberDecimal"
+ android:digits="0123456789."
+ android:maxLength="10"
+ android:hint="璇疯緭鍏ラ噾棰�" />
+```
+
+#### TextWatcher瀹炵幇灏忔暟浣嶉檺鍒�
+
+浣跨敤TextWatcher鏉ラ檺鍒剁敤鎴峰彧鑳借緭鍏ユ渶澶氫袱浣嶅皬鏁帮細
+
+```kotlin
+/**
+ * 璁剧疆閲戦杈撳叆闄愬埗锛屾渶澶氫繚鐣欎袱浣嶅皬鏁�
+ */
+private fun setupAmountInputLimit(editText: EditText) {
+ editText.addTextChangedListener(object : TextWatcher {
+ override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {}
+
+ override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {}
+
+ override fun afterTextChanged(s: Editable?) {
+ val text = s.toString()
+ if (text.isEmpty()) return
+
+ // 妫�鏌ユ槸鍚﹀寘鍚皬鏁扮偣
+ if (text.contains(".")) {
+ val parts = text.split(".")
+ if (parts.size == 2) {
+ val decimalPart = parts[1]
+ // 濡傛灉灏忔暟浣嶈秴杩�2浣嶏紝鎴彇鍓嶄袱浣�
+ if (decimalPart.length > 2) {
+ val newText = "${parts[0]}.${decimalPart.substring(0, 2)}"
+ editText.removeTextChangedListener(this)
+ editText.setText(newText)
+ editText.setSelection(newText.length)
+ editText.addTextChangedListener(this)
+ }
+ }
+ }
+
+ // 闃叉杈撳叆澶氫釜灏忔暟鐐�
+ val dotCount = text.count { it == '.' }
+ if (dotCount > 1) {
+ val newText = text.substring(0, text.lastIndexOf('.'))
+ editText.removeTextChangedListener(this)
+ editText.setText(newText)
+ editText.setSelection(newText.length)
+ editText.addTextChangedListener(this)
+ }
+
+ // 闃叉浠ュ皬鏁扮偣寮�澶�
+ if (text.startsWith(".")) {
+ editText.removeTextChangedListener(this)
+ editText.setText("0$text")
+ editText.setSelection(editText.text.length)
+ editText.addTextChangedListener(this)
+ }
+ }
+ })
+}
+
+// 鍦╥nitView涓皟鐢�
+setupAmountInputLimit(binding.rechargeAmount)
+setupAmountInputLimit(binding.bonusAmount)
+```
+
+#### 閲戦鏍煎紡鍖栨敞鎰忎簨椤�
+
+1. **缁熶竴鏍煎紡**: 鎵�鏈夐噾棰濇樉绀洪兘浣跨敤涓や綅灏忔暟鏍煎紡
+2. **杈撳叆楠岃瘉**: 楠岃瘉鐢ㄦ埛杈撳叆鐨勯噾棰濇牸寮忓拰鑼冨洿
+3. **璁＄畻绮惧害**: 浣跨敤Double绫诲瀷杩涜閲戦璁＄畻锛岄伩鍏嶇簿搴︿涪澶�
+4. **鏄剧ず鍗曚綅**: 閲戦鏄剧ず鏃剁粺涓�娣诲姞璐у竵鍗曚綅锛堝"鍏�"锛�
+5. **杈圭晫妫�鏌�**: 妫�鏌ラ噾棰濈殑鏈�澶у�煎拰鏈�灏忓�奸檺鍒�
+
+## 鍏呭�兼帴鍙ｄ娇鐢ㄨ鏄�
+
+椤圭洰涓疄鐜颁簡瀹屾暣鐨勫厖鍊煎姛鑳斤紝鍖呮嫭鍏呭�兼帴鍙ｈ皟鐢ㄥ拰NFC鍐欏崱鎿嶄綔銆�
+
+### 鍏呭�兼帴鍙ｈ鎯�
+
+**鎺ュ彛鍦板潃**: `/terminal/card/termRecharge`
+**璇锋眰鏂瑰紡**: POST
+**鎺ュ彛鎻忚堪**: 缁堢鍏呭�兼帴鍙ｏ紝鐢ㄤ簬鍒涘缓鍏呭�艰鍗曞苟杩斿洖鍐欏崱鎵�闇�淇℃伅
+
+#### 璇锋眰鍙傛暟
+
+```kotlin
+data class RechargeRequest(
+ val rechargeType: Int, // 鍏呭�肩被鍨� (鍥哄畾鍊�: 2)
+ val cardNum: String, // 鍗″彿
+ val money: String, // 鍏呭�奸噾棰� (鏍煎紡: "300.0")
+ val amount: String, // 鍏呭�兼暟閲�
+ val gift: String, // 璧犻�侀噾棰�
+ val paymentId: String, // 鏀粯鏂瑰紡ID
+ val price: String, // 鍗曚环 (鏍煎紡: "0.90")
+ val remarks: String, // 澶囨敞 (榛樿: "鍏呭��")
+ val operator: Long // 鎿嶄綔鍛業D
+)
+```
+
+#### 璇锋眰绀轰緥
+
+```json
+{
+ "rechargeType": 2,
+ "cardNum": "53232810100600001",
+ "money": "300.0",
+ "amount": "50",
+ "gift": "5",
+ "paymentId": "1838466162264350722",
+ "price": "0.90",
+ "remarks": "鍏呭��",
+ "operator": 2024090516595200300
+}
+```
+
+#### 杩斿洖鍙傛暟
+
+```kotlin
+data class RechargeResult(
+ val projectNo: Int, // 椤圭洰缂栧彿
+ val cardNum: String, // 鍗″彿
+ val orderNo: String, // 璁㈠崟鍙�
+ val waterPrice: Double, // 姘翠环
+ val time: String // 鏃堕棿
+)
+```
+
+#### 杩斿洖绀轰緥
+
+```json
+{
+ "code": "0001",
+ "content": {
+ "projectNo": 10,
+ "cardNum": "53232810100600001",
+ "orderNo": "2506041414250065",
+ "waterPrice": 0.9,
+ "time": "2025-05-08 17:31:02"
+ },
+ "msg": "璇锋眰鎴愬姛",
+ "success": true
+}
+```
+
+### 鍏呭�煎姛鑳藉疄鐜�
+
+#### 1. 鍦ˋctivity涓皟鐢ㄥ厖鍊兼帴鍙�
+
+```kotlin
+/**
+ * 璋冪敤鍏呭�兼帴鍙�
+ */
+private fun callRechargeApi(rechargeAmount: Double, bonusAmount: Double) {
+ val cardNum = cardInfo?.cardNum ?: cardAddress ?: ""
+
+ // 鏋勫缓鍏呭�艰姹傚弬鏁�
+ val params = mapOf(
+ "rechargeType" to 2,
+ "cardNum" to cardNum,
+ "money" to String.format("%.1f", rechargeAmount),
+ "amount" to String.format("%.0f", bonusAmount),
+ "gift" to String.format("%.0f", bonusAmount),
+ "paymentId" to paymentId.toString(),
+ "price" to "0.90",
+ "remarks" to "鍏呭��",
+ "operator" to 2024090516595200300L
+ )
+
+ ApiManager.getInstance().requestPostLoading(
+ this,
+ "terminal/card/termRecharge",
+ RechargeResult::class.java,
+ params,
+ object : SubscriberListener<BaseResponse<RechargeResult>>() {
+ override fun onNext(response: BaseResponse<RechargeResult>) {
+ if (response.success && response.code == "0001") {
+ // 鍏呭�兼垚鍔燂紝璺宠浆鍒板啓鍗＄晫闈�
+ response.content?.let { rechargeResult ->
+ startWriteCardActivity(rechargeResult, rechargeAmount, bonusAmount)
+ }
+ } else {
+ ToastUtil.show("鍏呭�煎け璐�: ${response.msg ?: "鏈煡閿欒"}")
+ }
+ }
+
+ override fun onError(e: Throwable?) {
+ super.onError(e)
+ ToastUtil.show("鍏呭�煎け璐�: ${e?.message ?: "缃戠粶寮傚父"}")
+ }
+ }
+ )
+}
+```
+
+#### 2. 璺宠浆鍒板啓鍗＄晫闈�
+
+```kotlin
+/**
+ * 鍚姩鍐欏崱鐣岄潰
+ */
+private fun startWriteCardActivity(rechargeResult: RechargeResult, rechargeAmount: Double, bonusAmount: Double) {
+ // 鍒涘缓UserCard瀵硅薄鐢ㄤ簬鍐欏崱
+ val userCard = UserCard().apply {
+ cardInfo?.let { info ->
+ userCode = info.cardNum ?: ""
+ balance = ((rechargeAmount + bonusAmount) * 100).toInt() // 杞崲涓哄垎
+ }
+
+ // 璁剧疆鍏朵粬蹇呰淇℃伅
+ projectCode = rechargeResult.projectNo
+ waterPrice = rechargeResult.waterPrice.toFloat()
+ rechargeDate = java.util.Calendar.getInstance()
+ }
+
+ // 鍚姩鍐欏崱Activity
+ val intent = Intent(this, NfcWreatActivity::class.java).apply {
+ putExtra("cardType", "USER_CARD")
+ putExtra("cardAddr", cardAddress)
+ putExtra("operationTypeCode", CardOperationType.Recharge.code)
+ putExtra("orderNumber", rechargeResult.orderNo)
+ putExtra("userCard", userCard)
+ }
+
+ startActivity(intent)
+}
+```
+
+#### 3. NFC鍐欏崱澶勭悊
+
+鍦╜NfcWreatActivity`涓紝鍏呭�兼搷浣滀細琚嚜鍔ㄥ鐞嗭細
+
+```kotlin
+CardOperationType.Recharge -> {
+ nfcWreatHelper.writeUserDataAsync(userCard, object : NFCCallBack {
+ override fun isSusses(flag: Boolean, msg: String?) {
+ runOnUiThread {
+ if (flag) {
+ postCardData(cardType, cardAddr)
+ ToastUtil.show("鍏呭�煎啓鍗℃垚鍔�!")
+ } else {
+ ToastUtil.show("鍏呭�煎啓鍗″け璐�: ${msg ?: "鏈煡閿欒"}")
+ }
+ }
+ }
+ })
+}
+```
+
+### 鍏呭�兼祦绋嬭鏄�
+
+1. **鐢ㄦ埛杈撳叆**: 鐢ㄦ埛鍦ㄥ厖鍊肩晫闈㈣緭鍏ュ厖鍊奸噾棰濆拰璧犻�侀噾棰�
+2. **鍙傛暟楠岃瘉**: 楠岃瘉杈撳叆鐨勯噾棰濇牸寮忓拰鏈夋晥鎬�
+3. **鎺ュ彛璋冪敤**: 璋冪敤`/terminal/card/termRecharge`鎺ュ彛鍒涘缓鍏呭�艰鍗�
+4. **璁㈠崟鍒涘缓**: 鏈嶅姟鍣ㄥ垱寤哄厖鍊艰鍗曞苟杩斿洖璁㈠崟淇℃伅
+5. **璺宠浆鍐欏崱**: 鎴愬姛鍚庤烦杞埌NFC鍐欏崱鐣岄潰
+6. **NFC鍐欏崱**: 鐢ㄦ埛璐村崱杩涜NFC鍐欏崱鎿嶄綔
+7. **鍐欏崱瀹屾垚**: 鍐欏崱鎴愬姛鍚庢洿鏂板崱鐗囦綑棰�
+
+### 娉ㄦ剰浜嬮」
+
+1. **閲戦鏍煎紡**: 鍏呭�奸噾棰濅娇鐢ㄤ竴浣嶅皬鏁版牸寮忥紝濡�"300.0"
+2. **鎿嶄綔鍛業D**: 闇�瑕佹牴鎹疄闄呯櫥褰曠敤鎴疯缃纭殑鎿嶄綔鍛業D
+3. **鏀粯鏂瑰紡**: 鏀粯鏂瑰紡ID闇�瑕佷粠鏀粯鏂瑰紡鎺ュ彛鑾峰彇
+4. **閿欒澶勭悊**: 鍏呭�煎け璐ユ椂瑕佹彁渚涙槑纭殑閿欒淇℃伅
+5. **鍐欏崱楠岃瘉**: 鍐欏崱鍓嶈楠岃瘉鍗″彿涓�鑷存��
+6. **璁㈠崟璺熻釜**: 淇濆瓨璁㈠崟鍙风敤浜庡悗缁煡璇㈠拰璺熻釜
+
+### 鐩稿叧鏁版嵁绫�
+
+```kotlin
+// 鍏呭�艰姹傛暟鎹被
+data class RechargeRequest(
+ val rechargeType: Int,
+ val cardNum: String,
+ val money: String,
+ val amount: String,
+ val gift: String,
+ val paymentId: String,
+ val price: String,
+ val remarks: String,
+ val operator: Long
+)
+
+// 鍏呭�肩粨鏋滄暟鎹被
+data class RechargeResult(
+ val projectNo: Int,
+ val cardNum: String,
+ val orderNo: String,
+ val waterPrice: Double,
+ val time: String
+)
+```
+
+## 姘翠环鎺ュ彛浣跨敤璇存槑
+
+椤圭洰涓疄鐜颁簡姘翠环鐨勫姩鎬佽幏鍙栧拰绠＄悊鍔熻兘锛屾敮鎸佷粠鏈嶅姟鍣ㄨ幏鍙栨渶鏂版按浠峰苟鍦ㄥ叏灞�鑼冨洿鍐呬娇鐢ㄣ��
+
+### 姘翠环鎺ュ彛璇︽儏
+
+**鎺ュ彛鍦板潃**: `/terminal/client/getWaterPrice`
+**璇锋眰鏂瑰紡**: GET
+**鎺ュ彛鎻忚堪**: 鑾峰彇褰撳墠绯荤粺姘翠环淇℃伅
+
+#### 杩斿洖鍙傛暟
+
+```kotlin
+data class WaterPriceResult(
+ val price: Double // 姘翠环
+)
+```
+
+#### 杩斿洖绀轰緥
+
+```json
+{
+ "code": "0001",
+ "content": {
+ "price": 0.9
+ },
+ "msg": "璇锋眰鎴愬姛",
+ "success": true
+}
+```
+
+### 姘翠环鍔熻兘瀹炵幇
+
+#### 1. BaseApplication涓殑姘翠环瀛樺偍
+
+```kotlin
+class BaseApplication {
+ companion object {
+ // 姘翠环淇℃伅
+ var waterPrice: Double = 0.0
+ }
+}
+```
+
+#### 2. MainActivity涓欢鏃惰幏鍙栨按浠�
+
+```kotlin
+class MainActivity : BaseNfcActivity() {
+ private val handler = Handler(Looper.getMainLooper())
+
+ override fun onCreate(savedInstanceState: Bundle?) {
+ super.onCreate(savedInstanceState)
+ // ... 鍏朵粬鍒濆鍖栦唬鐮� ...
+
+ // 寤舵椂20绉掑悗鑾峰彇姘翠环锛岄伩鍏嶅奖鍝嶅惎鍔ㄦ�ц兘
+ handler.postDelayed({
+ getWaterPrice()
+ }, 20000) // 20绉掑欢鏃�
+ }
+
+ /**
+ * 鑾峰彇姘翠环淇℃伅
+ */
+ private fun getWaterPrice() {
+ ApiManager.getInstance().requestGetLoading(
+ this,
+ "terminal/client/getWaterPrice",
+ WaterPriceResult::class.java,
+ null,
+ object : SubscriberListener<BaseResponse<WaterPriceResult>>() {
+ override fun onNext(response: BaseResponse<WaterPriceResult>) {
+ if (response.success && response.code == "0001") {
+ // 鑾峰彇姘翠环鎴愬姛锛屼繚瀛樺埌BaseApplication
+ response.content?.let { waterPriceResult ->
+ BaseApplication.waterPrice = waterPriceResult.price
+ }
+ }
+ }
+
+ override fun onError(e: Throwable?) {
+ super.onError(e)
+ // 缃戠粶寮傚父鏃朵笉鏄剧ず閿欒淇℃伅锛岄伩鍏嶅奖鍝嶇敤鎴蜂綋楠�
+ }
+ }
+ )
+ }
+
+ override fun onDestroy() {
+ super.onDestroy()
+ // 娓呯悊Handler鍥炶皟锛岄槻姝㈠唴瀛樻硠婕�
+ handler.removeCallbacksAndMessages(null)
+ }
+}
+```
+
+#### 3. RechargeDetailActivity涓殑姘翠环妫�鏌ュ拰浣跨敤
+
+```kotlin
+class RechargeDetailActivity : AppCompatActivity() {
+
+ override fun onCreate(savedInstanceState: Bundle?) {
+ super.onCreate(savedInstanceState)
+ // ... 鍏朵粬鍒濆鍖栦唬鐮� ...
+
+ // 妫�鏌ュ苟鑾峰彇姘翠环
+ checkAndGetWaterPrice()
+ }
+
+ /**
+ * 妫�鏌ュ苟鑾峰彇姘翠环
+ */
+ private fun checkAndGetWaterPrice() {
+ // 濡傛灉BaseApplication涓殑姘翠环涓虹┖鎴栦负0锛屽垯閲嶆柊鑾峰彇
+ if (BaseApplication.waterPrice <= 0.0) {
+ getWaterPrice()
+ }
+ }
+
+ /**
+ * 鑾峰彇姘翠环淇℃伅
+ */
+ private fun getWaterPrice() {
+ ApiManager.getInstance().requestGetLoading(
+ this,
+ "terminal/client/getWaterPrice",
+ WaterPriceResult::class.java,
+ null,
+ object : SubscriberListener<BaseResponse<WaterPriceResult>>() {
+ override fun onNext(response: BaseResponse<WaterPriceResult>) {
+ if (response.success && response.code == "0001") {
+ // 鑾峰彇姘翠环鎴愬姛锛屼繚瀛樺埌BaseApplication
+ response.content?.let { waterPriceResult ->
+ BaseApplication.waterPrice = waterPriceResult.price
+ }
+ } else {
+ // 鑾峰彇姘翠环澶辫触锛屼娇鐢ㄩ粯璁ゅ��
+ if (BaseApplication.waterPrice <= 0.0) {
+ BaseApplication.waterPrice = 0.9 // 璁剧疆榛樿姘翠环
+ }
+ }
+ }
+
+ override fun onError(e: Throwable?) {
+ super.onError(e)
+ // 缃戠粶寮傚父锛屼娇鐢ㄩ粯璁ゅ��
+ if (BaseApplication.waterPrice <= 0.0) {
+ BaseApplication.waterPrice = 0.9 // 璁剧疆榛樿姘翠环
+ }
+ }
+ }
+ )
+ }
+
+ /**
+ * 鍦ㄥ厖鍊兼帴鍙ｄ腑浣跨敤姘翠环
+ */
+ private fun callRechargeApi(rechargeAmount: Double, bonusAmount: Double) {
+ // 鑾峰彇褰撳墠姘翠环锛屽鏋滀负0鍒欎娇鐢ㄩ粯璁ゅ��
+ val currentWaterPrice = if (BaseApplication.waterPrice > 0.0) {
+ BaseApplication.waterPrice
+ } else {
+ 0.9 // 榛樿姘翠环
+ }
+
+ // 鏋勫缓鍏呭�艰姹傚弬鏁�
+ val params = mapOf(
+ // ... 鍏朵粬鍙傛暟 ...
+ "price" to String.format("%.2f", currentWaterPrice), // 浣跨敤鑾峰彇鍒扮殑姘翠环
+ // ... 鍏朵粬鍙傛暟 ...
+ )
+
+ // ... 鎺ュ彛璋冪敤浠ｇ爜 ...
+ }
+}
+```
+
+### 姘翠环绠＄悊娴佺▼
+
+1. **搴旂敤鍚姩**: MainActivity鍚姩鍚庡欢鏃�20绉掕幏鍙栨按浠凤紝閬垮厤褰卞搷鍚姩鎬ц兘
+2. **鍏ㄥ眬瀛樺偍**: 鑾峰彇鍒扮殑姘翠环瀛樺偍鍦˙aseApplication.waterPrice涓�
+3. **鎸夐渶鑾峰彇**: 鍦ㄩ渶瑕佷娇鐢ㄦ按浠风殑鐣岄潰锛堝鍏呭�肩晫闈級妫�鏌ユ按浠锋槸鍚︿负绌�
+4. **閲嶆柊鑾峰彇**: 濡傛灉姘翠环涓虹┖鎴栦负0锛屽垯閲嶆柊璋冪敤鎺ュ彛鑾峰彇
+5. **榛樿澶勭悊**: 濡傛灉鑾峰彇澶辫触锛屼娇鐢ㄩ粯璁ゆ按浠�0.9鍏�
+6. **瀹炴椂浣跨敤**: 鍦ㄥ厖鍊肩瓑涓氬姟涓娇鐢ㄦ渶鏂扮殑姘翠环淇℃伅
+
+### 鎶�鏈壒鐐�
+
+1. **鎬ц兘浼樺寲**: 寤舵椂鑾峰彇閬垮厤褰卞搷搴旂敤鍚姩閫熷害
+2. **鍏ㄥ眬鍏变韩**: 姘翠环淇℃伅鍦˙aseApplication涓叏灞�鍏变韩
+3. **鎸夐渶鍒锋柊**: 鍦ㄩ渶瑕佹椂妫�鏌ュ苟閲嶆柊鑾峰彇姘翠环
+4. **瀹归敊澶勭悊**: 鑾峰彇澶辫触鏃朵娇鐢ㄩ粯璁ゆ按浠凤紝纭繚涓氬姟姝ｅ父杩涜
+5. **鍐呭瓨绠＄悊**: 姝ｇ‘澶勭悊Handler鍥炶皟锛岄槻姝㈠唴瀛樻硠婕�
+
+### 浣跨敤娉ㄦ剰浜嬮」
+
+1. **寤舵椂璁剧疆**: MainActivity涓殑20绉掑欢鏃跺彲鏍规嵁瀹為檯闇�姹傝皟鏁�
+2. **榛樿姘翠环**: 榛樿姘翠环0.9鍏冨彲鏍规嵁瀹為檯涓氬姟闇�姹備慨鏀�
+3. **閿欒澶勭悊**: 姘翠环鑾峰彇澶辫触鏃朵笉鏄剧ず閿欒淇℃伅锛岄伩鍏嶅奖鍝嶇敤鎴蜂綋楠�
+4. **鏁版嵁鏍煎紡**: 姘翠环浣跨敤Double绫诲瀷瀛樺偍锛屼娇鐢ㄦ椂鏍煎紡鍖栦负涓や綅灏忔暟
+5. **鐢熷懡鍛ㄦ湡**: 娉ㄦ剰鍦ˋctivity閿�姣佹椂娓呯悊鐩稿叧璧勬簮
+
+### 鐩稿叧鏁版嵁绫�
+
+```kotlin
+// 姘翠环缁撴灉鏁版嵁绫�
+data class WaterPriceResult(
+ val price: Double // 姘翠环
+)
+```
+
## 璐＄尞鎸囧崡
1. Fork 椤圭洰
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