feat: opt 编码输入
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.docs/大写字母数字输入过滤器使用指南.md
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.docs/大写字母数字输入过滤器使用指南.md
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# 大写字母数字输入过滤器使用指南
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## 功能说明
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为 EditText 提供输入过滤功能:
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- ✅ 只允许输入大写字母(A-Z)和数字(0-9)
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- ✅ 小写字母自动转为大写
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- ✅ 自动过滤中文、特殊符号、空格等所有非法字符
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## 核心实现
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**位置**: `module_base/src/main/java/com/lukouguoji/module_base/ktx/EditTextKtx.kt`
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```kotlin
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/**
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* 大写字母和数字输入过滤器
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*/
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class UpperCaseAlphanumericInputFilter : InputFilter {
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// 实现细节...
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}
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/**
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* 为 EditText 设置大写字母和数字输入过滤器
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*/
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fun EditText.setUpperCaseAlphanumericFilter() {
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this.filters = arrayOf(UpperCaseAlphanumericInputFilter())
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}
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```
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## 使用方式
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### 方式一:直接为 EditText 设置(最简单)
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```kotlin
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import com.lukouguoji.module_base.ktx.setUpperCaseAlphanumericFilter
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// Activity 中
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override fun initOnCreate(savedInstanceState: Bundle?) {
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// 为普通 EditText 设置
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binding.editText.setUpperCaseAlphanumericFilter()
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}
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```
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### 方式二:为 PadDataLayoutNew 内部的 EditText 设置
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```kotlin
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import com.lukouguoji.module_base.ktx.setUpperCaseAlphanumericFilter
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// Activity 中
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override fun initOnCreate(savedInstanceState: Bundle?) {
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// PadDataLayoutNew 内部有一个 et 属性,是 EditText
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binding.carIdInput.et.setUpperCaseAlphanumericFilter()
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binding.uldNoInput.et.setUpperCaseAlphanumericFilter()
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binding.impCodeInput.et.setUpperCaseAlphanumericFilter()
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}
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```
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### 方式三:在自定义 View 中设置
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```kotlin
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import com.lukouguoji.module_base.ktx.setUpperCaseAlphanumericFilter
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class CustomView : FrameLayout {
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private val editText: EditText
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init {
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// 初始化后设置
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editText.setUpperCaseAlphanumericFilter()
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}
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}
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```
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## 实际应用案例
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### 案例1:板箱过磅页面(GjcBoxWeighingAddActivity)
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**需求**: 架子车号、ULD编码、IMP代码只允许输入大写字母和数字
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**实现**:
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```kotlin
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// GjcBoxWeighingAddActivity.kt
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import com.lukouguoji.module_base.ktx.setUpperCaseAlphanumericFilter
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override fun initOnCreate(savedInstanceState: Bundle?) {
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setBackArrow("板箱过磅")
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binding.viewModel = viewModel
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viewModel.initOnCreated(this)
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// 为架子车号、ULD编码、IMP代码添加大写字母和数字的输入限制
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binding.carIdInput.et.setUpperCaseAlphanumericFilter()
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binding.uldNoInput.et.setUpperCaseAlphanumericFilter()
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binding.impCodeInput.et.setUpperCaseAlphanumericFilter()
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}
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```
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**效果**:
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- 输入 `abc123` → 自动变成 `ABC123`
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- 输入 `板箱_88` → 自动变成 `88`
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- 输入 `test@#456` → 自动变成 `TEST456`
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### 案例2:其他可能需要的场景
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**航班号输入框**:
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```kotlin
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binding.flightNoInput.et.setUpperCaseAlphanumericFilter()
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```
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**运单号输入框**:
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```kotlin
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binding.waybillNoInput.et.setUpperCaseAlphanumericFilter()
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```
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**任何需要大写字母+数字的输入框**:
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```kotlin
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binding.anyInput.et.setUpperCaseAlphanumericFilter()
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```
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## 注意事项
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### 1. Import 路径
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```kotlin
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import com.lukouguoji.module_base.ktx.setUpperCaseAlphanumericFilter
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```
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### 2. 调用时机
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必须在 View 初始化完成后调用,通常在 Activity 的 `initOnCreate` 或 Fragment 的 `onViewCreated` 中。
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### 3. 与其他 Filter 组合使用
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如果需要同时使用多个 Filter:
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```kotlin
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val filters = arrayOf(
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UpperCaseAlphanumericInputFilter(),
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InputFilter.LengthFilter(20) // 同时限制长度
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)
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editText.filters = filters
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```
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### 4. 覆盖已有 Filter
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调用 `setUpperCaseAlphanumericFilter()` 会覆盖已有的 Filter。如果需要保留原有 Filter,请手动组合:
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```kotlin
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val existingFilters = editText.filters
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val newFilters = existingFilters + UpperCaseAlphanumericInputFilter()
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editText.filters = newFilters
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```
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## 扩展建议
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如果需要其他类型的输入过滤器,可以参考 `UpperCaseAlphanumericInputFilter` 的实现:
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### 示例1:只允许数字
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```kotlin
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class DigitsOnlyInputFilter : InputFilter {
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override fun filter(
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source: CharSequence?,
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start: Int,
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end: Int,
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dest: Spanned?,
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dstart: Int,
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dend: Int
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): CharSequence? {
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if (source.isNullOrEmpty()) return null
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val filtered = StringBuilder()
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for (i in start until end) {
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val char = source[i]
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if (char in '0'..'9') {
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filtered.append(char)
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}
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}
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return if (filtered.toString() == source.subSequence(start, end).toString()) {
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null
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} else {
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filtered.toString()
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}
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}
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}
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fun EditText.setDigitsOnlyFilter() {
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this.filters = arrayOf(DigitsOnlyInputFilter())
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}
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```
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### 示例2:只允许小写字母和数字
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```kotlin
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class LowerCaseAlphanumericInputFilter : InputFilter {
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override fun filter(
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source: CharSequence?,
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start: Int,
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end: Int,
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dest: Spanned?,
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dstart: Int,
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dend: Int
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): CharSequence? {
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if (source.isNullOrEmpty()) return null
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val filtered = StringBuilder()
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for (i in start until end) {
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val char = source[i]
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if (char in 'A'..'Z' || char in 'a'..'z' || char in '0'..'9') {
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filtered.append(char.lowercaseChar())
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}
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}
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return if (filtered.toString() == source.subSequence(start, end).toString()) {
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null
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} else {
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filtered.toString()
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}
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}
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}
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fun EditText.setLowerCaseAlphanumericFilter() {
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this.filters = arrayOf(LowerCaseAlphanumericInputFilter())
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}
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```
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## 测试建议
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在使用前建议测试以下场景:
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1. 输入小写字母是否自动转大写
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2. 输入中文是否被过滤
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3. 输入特殊符号是否被过滤
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4. 输入空格是否被过滤
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5. 粘贴文本是否正确处理
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6. 与软键盘的兼容性
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## 相关文件
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- **核心实现**: `module_base/src/main/java/com/lukouguoji/module_base/ktx/EditTextKtx.kt`
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- **使用示例**: `module_gjc/src/main/java/com/lukouguoji/gjc/activity/GjcBoxWeighingAddActivity.kt`
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---
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**最后更新**: 2025-12-16
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**维护人员**: 开发团队
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@@ -1,6 +1,7 @@
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package com.lukouguoji.module_base.ktx
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import android.text.InputFilter
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import android.text.Spanned
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import android.widget.EditText
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import androidx.databinding.BindingAdapter
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@@ -12,4 +13,47 @@ fun setTextAllCaps(et: EditText, allCaps: Boolean) {
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} else {
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et.filters = emptyArray<InputFilter>()
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}
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}
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/**
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* 大写字母和数字输入过滤器
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* 只允许输入大写字母(A-Z)和数字(0-9),小写字母自动转为大写
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*/
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class UpperCaseAlphanumericInputFilter : InputFilter {
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override fun filter(
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source: CharSequence?,
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start: Int,
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end: Int,
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dest: Spanned?,
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dstart: Int,
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dend: Int
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): CharSequence? {
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if (source.isNullOrEmpty()) return null
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val filtered = StringBuilder()
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for (i in start until end) {
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val char = source[i]
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// 只允许ASCII字母(A-Z, a-z)和数字(0-9)
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if (char in 'A'..'Z' || char in 'a'..'z' || char in '0'..'9') {
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// 自动转为大写
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filtered.append(char.uppercaseChar())
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}
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}
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// 如果过滤后的内容与原内容相同,返回null表示不修改
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// 否则返回过滤后的内容
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return if (filtered.toString() == source.subSequence(start, end).toString()) {
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null
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} else {
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filtered.toString()
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}
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}
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}
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/**
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* 为 EditText 设置大写字母和数字输入过滤器
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* 使用方式: editText.setUpperCaseAlphanumericFilter()
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*/
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fun EditText.setUpperCaseAlphanumericFilter() {
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this.filters = arrayOf(UpperCaseAlphanumericInputFilter())
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}
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@@ -7,6 +7,7 @@ import com.lukouguoji.gjc.R
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import com.lukouguoji.gjc.databinding.ActivityGjcBoxWeighingAddBinding
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import com.lukouguoji.gjc.viewModel.GjcBoxWeighingAddViewModel
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import com.lukouguoji.module_base.base.BaseBindingActivity
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import com.lukouguoji.module_base.ktx.setUpperCaseAlphanumericFilter
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/**
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* 国际出港板箱过磅添加页面
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@@ -22,6 +23,11 @@ class GjcBoxWeighingAddActivity :
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setBackArrow("板箱过磅")
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binding.viewModel = viewModel
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viewModel.initOnCreated(this)
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// 为架子车号、ULD编码、IMP代码添加大写字母和数字的输入限制
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binding.carIdInput.et.setUpperCaseAlphanumericFilter()
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binding.uldNoInput.et.setUpperCaseAlphanumericFilter()
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binding.impCodeInput.et.setUpperCaseAlphanumericFilter()
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}
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companion object {
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@@ -102,6 +102,7 @@
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android:layout_weight="1" />
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<com.lukouguoji.module_base.ui.weight.data.layout.PadDataLayoutNew
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android:id="@+id/impCodeInput"
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hint='@{"请输入IMP代码"}'
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title='@{"IMP代码"}'
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titleLength="@{5}"
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