react-native - 反应原生：模态不显示

Question

我是 react-native 的新手，我正在尝试使用以下代码在 react-native 中显示模态

      <View>
    <View onPress={() => {this.toggleModal(true) }}  onBackdropPress={ () => 
   {this.hideModal(false)}}>

        <View>
            <OcticonsIcons name='plus' size={19}/>

            <Text>QUICK ACTION</Text>
        </View>

        <View>
            <View>
                <Image source={require('../images/truck.png')} 
                />
                <Image source={require('../images/taxi(1).png')} 
                />
                <Image source={require('../images/tour.png')} 
                />
            </View>
        </View>

     </View>

    </View>
    <Modal visible={this.state.isModalVisible} animationType = "slide" transparent = 
    {false}>
            <View style={{ flex: 1 }}>
             <Text style={{ fontWeight:'bold', fontSize: 20, color: '#f79334', marginTop: 15 
      }} > Services </Text>
            </View>
      </Modal>


  toggleModal(visible){
   this.setState({ isModalVisible: visible });
  }

    hideModal(visible){
   this.setState({ isModalVisible: visible })
   }

但它不起作用，谁能告诉我我的代码有什么问题，谢谢。

Answer 1

问题是您不能在组件上使用 onPress 功能，它仅用于显示。要使用 onPress，您必须使用 TouchableOpacity。

检查下面的代码：

 <View>
    <TouchableOpacity onPress={() => {this.toggleModal(true) }}  onBackdropPress={ () => 
   {this.hideModal(false)}}>

        <View>
            <OcticonsIcons name='plus' size={19}/>

            <Text>QUICK ACTION</Text>
        </View>

        <View>
            <View>
                <Image source={require('../images/truck.png')} 
                />
                <Image source={require('../images/taxi(1).png')} 
                />
                <Image source={require('../images/tour.png')} 
                />
            </View>
        </View>

     </TouchableOpacity>

    </View>
    <Modal visible={this.state.isModalVisible} animationType = "slide" transparent = 
    {false}>
            <View style={{ flex: 1 }}>
             <Text style={{ fontWeight:'bold', fontSize: 20, color: '#f79334', marginTop: 15 
      }} > Services </Text>
            </View>
      </Modal>


  toggleModal = (visible) =>{
   this.setState({ isModalVisible: visible });
  }

    hideModal = (visible) => {
   this.setState({ isModalVisible: visible })
   }

希望能帮助到你。随时怀疑