Am试图使用以下方式将数据从一个组件（子组件）传递到另一组件（父组件）
反应本机ListView数据源
这又返回此错误public final class Comment implements com.example.barrechat192.data.entities.Comment {
^
Tried the following constructors but they failed to match:
Comment(java.lang.String,com.example.barrechat192.data.entities.User,java.lang.String,long,java.lang.String) -> [param:objectId -> matched field:objectId, param:author -> matched field:unmatched, param:momentId -> matched field:momentId, param:timestamp -> matched field:timestamp, param:content -> matched field:content]C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\implementations\messages\Comment.java:13: error: Cannot find setter for field.
private final java.lang.String _author = null;
^C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\implementations\messages\Comment.java:17: error: Cannot find setter for field.
private final java.lang.String objectId = null;
^C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\implementations\messages\Comment.java:23: error: Cannot find setter for field.
private final long timestamp = 0L;
^C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\implementations\messages\DirectMessage.java:7: error: Entities and POJOs must have a usable public constructor. You can have an empty constructor or a constructor whose parameters match the fields (by name and type).
public final class DirectMessage implements com.example.barrechat192.data.entities.DirectMessage {
^
Tried the following constructors but they failed to match:
DirectMessage(java.lang.String,com.example.barrechat192.data.entities.User,com.example.barrechat192.data.entities.User,java.lang.String,long) -> [param:objectId -> matched field:objectId, param:author -> matched field:unmatched, param:recipient -> matched field:unmatched, param:content -> matched field:content, param:timestamp -> matched field:timestamp]C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\implementations\messages\DirectMessage.java:10: error: Cannot find setter for field.
private final java.lang.String _author = null;
^C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\implementations\messages\DirectMessage.java:13: error: Cannot find setter for field.
private final java.lang.String _recipient = null;
^C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\implementations\messages\DirectMessage.java:17: error: Cannot find setter for field.
private final java.lang.String objectId = null;
^C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\implementations\messages\DirectMessage.java:25: error: Cannot find setter for field.
private final java.lang.String content = null;
^C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\implementations\messages\DirectMessage.java:26: error: Cannot find setter for field.
private final long timestamp = 0L;
^C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\implementations\mapobjects\MapObject.java:10: error: The name "map_objects" is used by multiple entities or views: com.example.barrechat192.data.entities.implementations.mapobjects.MapObject, com.example.barrechat192.data.entities.implementations.mapobjects.MapObject
public final class MapObject implements com.example.barrechat192.data.entities.MapObject {
^C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\AppDatabase.java:8: error: The name "map_objects" is used by multiple entities or views: com.example.barrechat192.data.entities.implementations.mapobjects.MapObject, com.example.barrechat192.data.entities.implementations.mapobjects.MapObject
public abstract class AppDatabase extends androidx.room.RoomDatabase {
^C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\geocache\GeoTableWithMapObjects.java:12: error: Cannot find the child entity column `geohash` in com.example.barrechat192.data.entities.implementations.mapobjects.MapObject. Options: objectId, timestamp, thumbnailUrl, thumbnailPath, objectType, local, views, viewed, geoHash, latitude, longitude
private final java.util.List<com.example.barrechat192.data.entities.implementations.mapobjects.MapObject> mapObjects = null;
^C:\Users\Anon\AndroidStudioProjects\Barrechat192\app\build\tmp\kapt3\stubs\debug\com\example\barrechat192\data\entities\geocache\GeoTableWithMapObjects.java:6: error: Entities and POJOs must have a usable public constructor. You can have an empty constructor or a constructor whose parameters match the fields (by name and type).
这是ListItem组件（它是子组件）
undefined is not an object(evaluating 'new _reactNative.ListView.DataSource')现在，我知道import React, { Component } from 'react';
import { Text, TouchableWithoutFeedback } from 'react-native';
import { Icon, Container } from 'native-base';
import moment from 'moment';
class ListItem extends Component {
constructor(){
super();
this.state = {
attendance: []
};
}
attendee = [{
courseName: 'comp',
lecturer: 'Akanbi T.B',
students: 'Tunde Ajagba',
date: '10/11/2020',
},{
courseName: 'comp',
lecturer: 'Akanbi T.B',
students: 'Tunde Ajagba',
date: '09/11/2020',
},
{
courseName: 'comp',
lecturer: 'Akanbi T.B',
students: 'Tunde Ajagba',
date: '08/11/2020',
},
{
courseName: 'comp',
lecturer: 'Akanbi T.B',
students: 'Kola Babatunde',
date: '09/11/2020',
},
{
courseName: 'comp',
lecturer: 'Akanbi T.B',
students: 'Kola Babatunde',
date: '10/11/2020',
}
];
onRowPress() {
this.record = this.attendee.map(function(item,index) {
alert("item: " + item.courseName + " at index: " + index );
});
//const { navigate } = this.props.navigation;
//navigate('attendanceDetails', { record });
}
render() {
return (
<TouchableWithoutFeedback onPress={this.onRowPress.bind(this)}>
<Container style={styles.containerStyle}>
<Text style={styles.labelStyle}>Course:</Text>
<Text style={styles.titleStyle}>{courseName}</Text>
<Text style={styles.labelStyle}>Date:</Text>
<Text style={styles.titleStyle}>
</Text>
<form onSubmit = {this.onTrigger}>
<input type = "submit" value = "Submit"/>
</form>
<Icon name='ios-arrow-forward' style={{ color: 'grey', marginLeft: 5 }} />
</Container>
</TouchableWithoutFeedback>
);
}
}
export default ListItem;
函数中存在错误，因为无法使数组在onRowPress函数中起作用（这我不知道如何执行）。
与此同时，在
ViewAttendance组件（它是父组件）。
这就是我所拥有的
render我该如何解决眼前的问题？