React Native 应用程序样式不在 xcode 模拟器上呈现，但在 Android Studio 上工作？

Question

So I have a basic react native chat application that runs on both android studio and Xcode ios simulator. I am using expo. But the Xcode ios simulator is not rendering some styles as you can see. The android emulator is showing proper alignment for all the text and border radius for each message box. What is the issue?

    function ChatMessage(props) {
  const { to,message,from,time } = props.message;
  const messageClass = from === 'Ram' ? 'sent' : 'received';

  const timeStamp = () =>{
    return( 
    <View>
      <Text style={{fontSize:12,color:'black',alignSelf:'flex-end'}}>{time}</Text>
    </View>
    )
  }

  return (
  <>
    {/* <View className ={`message ${messageClass}`}> */}
    <View style={[styles.messageContainer, messageClass === 'sent' ? styles.sent : styles.received ]}>
      <Text style={[styles.message, messageClass === 'sent' ? styles.sentMessage : styles.receivedMessage ]}>
        
        {messageClass === 'received' && <NameStamp from={from}/>}//PROBLEM HERE. CODE OF NAMESTAMP BELOW
        {messageClass === 'received' && "\n"}
        <Text style={{fontSize:20}}>
        {message}
        </Text>
        {"\n"}
        {timeStamp()} //PROBLEM HERE CODE OF TIMESTAMP ABOVE
        {/*invoke timeStamp function */}
      </Text>
    </View>
  </>
  )
}

//THIS COMPONENT IS ~Ghanshayam IN THE SCREEN. NOT ALIGNING //PROPERLY
const NameStamp = (props) =>{
    return(
      <View>
        <Text style={{color:'grey',fontSize:12,alignSelf:'flex-end'}}>
          ~{props.from}
        </Text>
      </View>
    )
  }




const styles = StyleSheet.create({
  container: {
    backgroundColor:'#d4e4f7',
    flex:1,
    
  },
  header:{
    backgroundColor:'#236ab9',
    flexDirection:'row',
    justifyContent: 'center',
    alignItems: 'center',
    alignContent: 'center',
    flex:1,
    
  },
  main:{
    backgroundColor:'#d4e4f7',
    padding:10,
    flex:5,
  },
  form:{
    backgroundColor:'#236ab9',
    flex:1,
    flexDirection:'row'
  },
  input:{
    flex:4,
    color:'white',
    padding:5,
    fontSize:22,
  },
  text:{
    // margin:'0 auto',
    color:'white',
    fontSize:20, 
  },
  message:{
    lineHeight:24,
    padding:15,
    marginBottom:12,
    borderRadius:25,
    overflow:'hidden', //THIS FIXED THE BORDER RADIUS
    position:'relative',
    color:'white',
    textAlign:'left'
  },
  messageContainer:{
    flexDirection:'row',
    alignItems:'center',
  },
  sent:{
    flexDirection:'row-reverse'
  },
  sentMessage:{
    color:'white',
    backgroundColor:'#0b93f6',
    alignSelf:'flex-end'
  },
  receivedMessage:{
    backgroundColor:'white',
    color:'black'
  }
});

Answer 1

here is the updated code as for your need i have included snack link so you check that its working in both ios, android platforms

snack demo link

code:

function ChatMessage(props) {
  const { to, message, from, time } = props.message;
  const messageClass = from === 'Ram' ? 'sent' : 'received';

  const timeStamp = () => {
    return (
      <View>
        <Text
          style={{
            fontSize: 12,
            color: messageClass === 'sent' ? 'white' : 'black',
            alignSelf: 'flex-end',
          }}>
          {time}
        </Text>
      </View>
    );
  };

  return (
    <View
      style={[
        styles.messageContainer,
        messageClass === 'sent' ? styles.sent : styles.received,
      ]}>
      {messageClass === 'received' && <NameStamp from={from} />}
      <Text
        style={[
          styles.message,
          messageClass === 'sent' ? styles.sentMessage : styles.receivedMessage,
        ]}>
        <Text style={{ fontSize: 20 }}>{message}</Text>
      </Text>
      {timeStamp()}
    </View>
  );
}

const NameStamp = (props) => {
  return (
    <View>
      <Text style={{ color: 'grey', fontSize: 12, alignSelf: 'flex-end' }}>
        ~{props.from}
      </Text>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    backgroundColor: '#d4e4f7',
    flex: 1,
    paddingTop: 70,
  },
  header: {
    backgroundColor: '#236ab9',
    flexDirection: 'row',
    justifyContent: 'center',
    alignItems: 'center',
    alignContent: 'center',
    flex: 1,
  },
  main: {
    backgroundColor: '#d4e4f7',
    padding: 10,
    flex: 5,
  },
  form: {
    backgroundColor: '#236ab9',
    flex: 1,
    flexDirection: 'row',
  },
  input: {
    flex: 4,
    color: 'white',
    padding: 5,
    fontSize: 22,
  },
  text: {
    color: 'white',
    fontSize: 20,
  },
  message: {
    lineHeight: 24,
    color: 'white',
    textAlign: 'left',
  },
  received: {
    backgroundColor: 'white',
    alignSelf: 'flex-start',
  },
  messageContainer: {
    alignItems: 'flex-start',
    padding: 15,
    marginBottom: 12,
    borderRadius: 25,
    overflow: 'hidden',
    minWidth: 160,
    maxWidth: 220, // define min, max width
  },
  sent: {
    alignSelf: 'flex-end',
    backgroundColor: '#0b93f6',
  },
  sentMessage: {
    color: 'white',
   
  },
  receivedMessage: {
    color: 'black',
  },
});