Kotlin Android设置TextInputLayout.END_ICON_CLEAR_TEXT后焦点监听失效问题

安全阿岳

2026-10-5

问题原因

当TextInputLayout设置为END_ICON_CLEAR_TEXT模式时，内部会自动为内嵌的输入控件注册专属焦点变化监听器，用于控制清除图标的显隐逻辑，该操作会直接覆盖你提前给输入控件设置的自定义监听，导致原有回调不触发。

解决方案

调整代码执行顺序，先完成TextInputLayout的清除图标配置，再给输入控件设置自定义焦点监听，同时在自定义监听中优先调用TextInputLayout内部原有监听逻辑，保证清除图标功能正常：

textInputLayout = LayoutInflater.from(activity).inflate(R.layout.textinputlayouttemplate, null) as TextInputLayout
val textView = CreateUI._TextView(castToField(field), textInputLayout.context)

textInputLayout.addView(textView, layout_wMATCHPARENT_hWRAPCONTENT)
textInputLayout.layoutParams = layout_wMATCHPARENT_hWRAPCONTENT
textInputLayout.setPadding(0, 0, 0, 0)
// 优先配置清除图标模式，让TextInputLayout先注册内部监听
textInputLayout.endIconMode = TextInputLayout.END_ICON_CLEAR_TEXT
linearLayout.addView(textInputLayout)

if (field.validatefield || field.nextpage != 0)
{
    // 保存TextInputLayout已设置的原有焦点监听
    val originalFocusListener = textView.onFocusChangeListener
    textView.setOnFocusChangeListener { _, hasFocus ->
        // 先执行原有监听逻辑，保证清除图标显隐正常
        originalFocusListener?.onFocusChange(textView, hasFocus)
        // 执行自定义业务逻辑
        if (!hasFocus && !GlobalVar.drawerOpened)
        {
            if ((field.mandatory && !textView.text.toString().isNullOrEmpty()) || (!field.mandatory)) {
                if (field.validatefield) {
                    validateField(field.fieldcode, textView.text.toString(), field.nextpage)
                } else {
                    _goToNextPageNo = field.nextpage
                    goToNextPageIfExist()
                }
            }
        }
    }
}