Hi, xin chào cả nhà, đây là bài viết đầu tiên của mình. Hôm nay mình sẽ hướng dẫn các bạn tạo Custom Radio button đơn giản trong React Native mà không cần sử dụng thư viện nào cả.
hình ảnh đây ạ
đây là code ạ
ở phần styles. mình tạo 2 styles cho button và 2 styles cho text, buttonSelect và buttonNonSelect, buttonTextSelect và buttonTextNonSelect
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | /*this is styles for radio button*/ buttonContainHorizontal:{ flex:4, flexDirection: 'row', borderRadius: 4, }, buttonNonSelect:{ flex: 1, flexDirection: 'row', backgroundColor: '#ededed', justifyContent: 'center', alignItems: 'center', height: 40, borderStyle: 'solid', borderWidth: 1, borderColor: '#c1c1c1' }, buttonSelect :{ flex: 1, flexDirection: 'row', backgroundColor: '#00bfa5', justifyContent: 'center', alignItems: 'center', height: 40 }, buttonTextSelect:{ fontSize: 14, fontFamily: 'sans-serif', color: '#fafafa' }, buttonTextNonSelect:{ fontSize: 14, fontFamily: 'sans-serif', color: '#777' }, |
Trong phần mình tạo 1 biến chứa giá trị, ví dụ như gender để chứa giá trị của radio button gender
1 2 | const [gender, setGender] = useState(0) // 0 là "Nam", 1 là "Nữ" |
Trong phần return, mình tạo 2 nút, thay đổi kiểu khi người dùng click vào
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | {/*This is form container*/} <View style={styles.formContain}> {/*This is input contain*/} <View style={styles.inputContain}> <View style={styles.titleInput}> <Text style={styles.titleInputText}>Gender</Text> </View> <View style={styles.buttonContainHorizontal}> <TouchableOpacity style= {gender == 0 ? styles.buttonSelect : styles.buttonNonSelect} onPress={() => setGender(0)}> <Text style={gender == 0? styles.buttonTextSelect : styles.buttonTextNonSelect}>{t('male')}</Text> <Text style={styles.titleInputDesc}>+0</Text> </TouchableOpacity> <TouchableOpacity style={gender == 1 ? styles.buttonSelect : styles.buttonNonSelect} onPress={() => setGender(1)}> <Text style={gender == 1? styles.buttonTextSelect : styles.buttonTextNonSelect}>{t('female')}</Text> <Text style={styles.titleInputDesc}>+1</Text> </TouchableOpacity> </View> </View> {/*end input contain*/} </View> {/*end from contain*/} |
Như vậy khi người dùng chọn “nam”, button nào được chọn sẽ thay đổi kiểu, và giá trị của biến gender cũng thay đổi theo
Chỉ có vậy thôi ạ. Đây là bài viết đầu tiên của em. mong các anh chị chém nhẹ tay thôi ạ
full code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 | import React, {useState} from 'react' import {View, Text, TextInput, ScrollView, TouchableOpacity, TouchableWithoutFeedback, KeyboardAvoidingView, Keyboard} from 'react-native' import AdMob from '../components/AdMob' import {styles} from '../components/styles' import {t} from '../locales/index' export default function NauseaVomiting(){ const [gender, setGender] = useState(0) const [smoke, setSmoke] = useState(0) const [history, setHistory] = useState(0) const [opioid, setOpioid] = useState(0) var point = gender + smoke + history + opioid var rick = 0 switch(point) { case 0: rick = 10 break; case 1: rick = 21 break; case 2: rick = 39 break; case 3: rick = 61 break; case 4: rick = 79 break; default: rick = 0 } return( <View> <ScrollView> <KeyboardAvoidingView style={styles.container}> <TouchableWithoutFeedback onPress={Keyboard.dismiss}> <View style={styles.inner}> {/*This is header*/} <View style={styles.headerContain}> <Text style={styles.headerTitle}>{t('nausea_voimiting')}</Text> <Text style={styles.headerSubTitle}>{t('nausea_voimiting_desc')}</Text> </View> {/*End header*/} <View style={styles.formInfo}> <Text style={styles.infoText}>{t('nausea_voimiting_info')}</Text> </View> {/*This is form container*/} <View style={styles.formContain}> {/*This is input contain*/} <View style={styles.inputContain}> <View style={styles.titleInput}> <Text style={styles.titleInputText}>{t('gender')}</Text> </View> <View style={styles.buttonContainHorizontal}> <TouchableOpacity style= {gender == 0 ? styles.buttonSelect : styles.buttonNonSelect} onPress={() => setGender(0)}> <Text style={gender == 0? styles.buttonTextSelect : styles.buttonTextNonSelect}>{t('male')}</Text> <Text style={styles.titleInputDesc}>+0</Text> </TouchableOpacity> <TouchableOpacity style={gender == 1 ? styles.buttonSelect : styles.buttonNonSelect} onPress={() => setGender(1)}> <Text style={gender == 1? styles.buttonTextSelect : styles.buttonTextNonSelect}>{t('female')}</Text> <Text style={styles.titleInputDesc}>+1</Text> </TouchableOpacity> </View> </View> {/*end input contain*/} </View> {/*end from contain*/} {/*This is form container*/} <View style={styles.formContain}> {/*This is input contain*/} <View style={styles.inputContain}> <View style={styles.titleInput}> <Text style={styles.titleInputText}>{t('smoking_status')}</Text> </View> <View style={styles.buttonContainHorizontal}> <TouchableOpacity style= {smoke == 0 ? styles.buttonSelect : styles.buttonNonSelect} onPress={() => setSmoke(0)}> <Text style={smoke == 0? styles.buttonTextSelect : styles.buttonTextNonSelect}>{t('yes')}</Text> <Text style={styles.titleInputDesc}>+0</Text> </TouchableOpacity> <TouchableOpacity style={smoke == 1 ? styles.buttonSelect : styles.buttonNonSelect} onPress={() => setSmoke(1)}> <Text style={smoke == 1? styles.buttonTextSelect : styles.buttonTextNonSelect}>{t('no')}</Text> <Text style={styles.titleInputDesc}>+1</Text> </TouchableOpacity> </View> </View> {/*end input contain*/} </View> {/*end from contain*/} {/*This is form container*/} <View style={styles.formContain}> {/*This is input contain*/} <View style={styles.inputContain}> <View style={styles.titleInput}> <Text style={styles.titleInputText}>{t('history_ motion_sickness')}</Text> </View> <View style={styles.buttonContainHorizontal}> <TouchableOpacity style= {history == 1 ? styles.buttonSelect : styles.buttonNonSelect} onPress={() => setHistory(1)}> <Text style={history == 1? styles.buttonTextSelect : styles.buttonTextNonSelect}>{t('yes')}</Text> <Text style={styles.titleInputDesc}>+1</Text> </TouchableOpacity> <TouchableOpacity style={history == 0 ? styles.buttonSelect : styles.buttonNonSelect} onPress={() => setHistory(0)}> <Text style={history == 0? styles.buttonTextSelect : styles.buttonTextNonSelect}>{t('no')}</Text> <Text style={styles.titleInputDesc}>+0</Text> </TouchableOpacity> </View> </View> {/*end input contain*/} </View> {/*end from contain*/} {/*This is form container*/} <View style={styles.formContain}> {/*This is input contain*/} <View style={styles.inputContain}> <View style={styles.titleInput}> <Text style={styles.titleInputText}>{t('use_postoperative_opioid')}</Text> </View> <View style={styles.buttonContainHorizontal}> <TouchableOpacity style= {opioid == 1 ? styles.buttonSelect : styles.buttonNonSelect} onPress={() => setOpioid(1)}> <Text style={opioid == 1? styles.buttonTextSelect : styles.buttonTextNonSelect}>{t('yes')}</Text> <Text style={styles.titleInputDesc}>+1</Text> </TouchableOpacity> <TouchableOpacity style={opioid == 0 ? styles.buttonSelect : styles.buttonNonSelect} onPress={() => setOpioid(0)}> <Text style={opioid == 0? styles.buttonTextSelect : styles.buttonTextNonSelect}>{t('no')}</Text> <Text style={styles.titleInputDesc}>+0</Text> </TouchableOpacity> </View> </View> {/*end input contain*/} </View> {/*end from contain*/} {/*This is result contain*/} <View style={styles.resultContain}> <View style={styles.resultTitle}> <Text style={styles.resultTitleText}>{point} {t('point')}</Text> <Text style={styles.resultTitleDesc}>{t('apfel_score')}</Text> </View> <Text style={styles.result}>{rick}%</Text> <Text style={styles.unit}>{t('rick_ponv')}</Text> </View> {/*End result contain*/} <View style={styles.formInfo}> <Text style={styles.titleInfo}>{t('advice')}</Text> <Text style={styles.infoText}>{t('ponv_advice')}</Text> </View> <View style={styles.formInfo}> <Text style={styles.titleInfo}>{t('facts_figures')}</Text> <View style={styles.formInfo2col}> <View style={styles.infoCol1}> <Text style={styles.infoText}>{t('apfel_score')}</Text> </View> <View style={styles.infoCol2}> <Text style={styles.infoText}>{t('rick_ponv')}</Text> </View> </View> <View style={styles.formInfo2col}> <View style={styles.infoCol1}> <Text style={styles.infoText}>0</Text> </View> <View style={styles.infoCol2}> <Text style={styles.infoText}>10%</Text> </View> </View> <View style={styles.formInfo2col}> <View style={styles.infoCol1}> <Text style={styles.infoText}>1</Text> </View> <View style={styles.infoCol2}> <Text style={styles.infoText}>21%</Text> </View> </View> <View style={styles.formInfo2col}> <View style={styles.infoCol1}> <Text style={styles.infoText}>2</Text> </View> <View style={styles.infoCol2}> <Text style={styles.infoText}>39%</Text> </View> </View> <View style={styles.formInfo2col}> <View style={styles.infoCol1}> <Text style={styles.infoText}>3</Text> </View> <View style={styles.infoCol2}> <Text style={styles.infoText}>61%</Text> </View> </View> <View style={styles.formInfo2col}> <View style={styles.infoCol1}> <Text style={styles.infoText}>4</Text> </View> <View style={styles.infoCol2}> <Text style={styles.infoText}>79%</Text> </View> </View> </View> <View style={styles.formInfo}> <Text style={styles.infoText}>{t('creator')}: {'Dr. Christian C. Apfel'}</Text> </View> </View> </TouchableWithoutFeedback> </KeyboardAvoidingView> </ScrollView> </View> ) } |