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本文深度剖析了 React Native 中用于用户输入的核心组件——TextInput。内容系统性地阐述了其作为受控组件的状态管理模式（onChangeText, value），并详细解析了用于定制原生键盘行为的关键属性，如 keyboardType（键盘类型）和 returnKeyType（返回键类型）及其对应的 onSubmitEditing 事件。
Textinput
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