react本机flatlist不会动态呈现项的宽度

我正在尝试使用用户界面工具包nachos用户界面中的“平面列表”和“消息气泡”样式创建消息接口,但我无法让平面列表根据文本量呈现不同宽度的文本气泡。每当我第一次发送消息时,气泡似乎是一个合适的宽度:

然而,每当我发送另一条消息时,尽管在这些图片中很难看到,但它会更改前一条消息的宽度,并将新消息限制为最大宽度。

这是我的扁平列表代码:

<FlatList
          data={this.state.messages}
          style={{marginLeft: 280}}
          ref={ref => this.flatList = ref}
          onContentSizeChange={() => this.flatList.scrollToEnd({animated: true})}
          onLayout={() => this.flatList.scrollToEnd({animated:true})}
          keyExtractor = {item => item.timestamp}
          renderItem={({item}) => <Bubble style={{marginTop: 20}} color="#FFC800"
           >{item.contents}</Bubble>}
        />

此外,整个组件的代码可能有助于诊断问题:

<KeyboardAvoidingView style={styles.container} 
      behavior="padding"
      keyboardVerticalOffset={64}>
      <KeyboardAvoidingView style={styles.inputContainer}>

      <FlatList
          data={this.state.messages}
          style={{marginLeft: 280}}
          ref={ref => this.flatList = ref}
          onContentSizeChange={() => this.flatList.scrollToEnd({animated: true})}
          onLayout={() => this.flatList.scrollToEnd({animated:true})}
          keyExtractor = {item => item.timestamp}
          renderItem={({item}) => <Bubble style={{marginTop: 20}} color="#FFC800"
           >{item.contents}</Bubble>}
        />
      <View style={{flexDirection:'row', backgroundColor: 'transparent'}}>
      <Input
        containerStyle={{marginVertical: 10, width:300, marginLeft: 20}}
        inputStyle={styles.textInput}
        keyboardAppearance="dark"
        placeholder=""
        autoCorrect={false}
        onChangeText={(message) => { this.setState({message})}}
        value={this.state.message}
        />
        <Button 
          buttonStyle={{borderRadius: 25, marginTop: 40, marginLeft: 10, paddingVertical: 5, backgroundColor: "#9214FF"}}
          icon={{name: 'arrow-up', type: 'feather', color:'white'}}
          onPress={()=>{Keyboard.dismiss; this.onPressButton()}} 
          title=""/> 
        </View>
        </KeyboardAvoidingView>
      </KeyboardAvoidingView>

如何让Flatlist根据提交的文本量以动态大小呈现每个消息,而不更改任何以前的消息,也不更改预定的最大宽度?