I know there have been similar questions, but I tried anyway and still can't find the solution.
I have a login screen, registration, chat and a test screen (where I use just to try to fix this error) I want to pass the name, email and avatar data that I get there from Login / Register, but it is returned to me that the object is undefined. I only corrected the error if I put the navigation as follows: Login or Register> Chat. However, I do not want to do so, I need to click on an image and direct to this chat. Apparently it's a common mistake, but I'm frustrated with trying to fix it (I'm new to React-Native)
Chat.js
import { GiftedChat } from "react-native-gifted-chat"; // 0.3.0
import firebaseSvc from "../FirebaseSvc";
type Props = {
name?: string,
email?: string,
avatar?: string
};
class Chat extends React.Component<Props> {
constructor(props) {
super(props);
}
static navigationOptions = ({ navigation }) => ({
title: (navigation.state.params || {}).name || "Chat!"
});
state = {
messages: []
};
get user() {
return {
name: this.props.navigation.state.params.name,
email: this.props.navigation.state.params.email,
avatar: this.props.navigation.state.params.avatar,
id: firebaseSvc.uid,
_id: firebaseSvc.uid // need for gifted-chat
};
}
render() {
return (
<GiftedChat
messages={this.state.messages}
onSend={firebaseSvc.send}
user={this.user}
/>
);
}
componentDidMount() {
firebaseSvc.refOn(message =>
this.setState(previousState => ({
messages: GiftedChat.append(previousState.messages, message)
}))
);
}
componentWillUnmount() {
firebaseSvc.refOff();
}
}
export default Chat;
Login.js
import { Constants, ImagePicker, Permissions } from "expo";
import {
StyleSheet,
Text,
TextInput,
TouchableOpacity,
KeyboardAvoidingView,
View,
Button,
ImageEditor,
Image,
StatusBar,
LayoutAnimation
} from "react-native";
import firebaseSvc from "../FirebaseSvc";
import firebase from "firebase";
import { auth, initializeApp, storage } from "firebase";
import uuid from "uuid";
class Login extends React.Component {
state = {
name: "",
email: "",
password: "",
avatar: ""
};
// using Fire.js
onPressLogin = async () => {
console.log("pressing login... email:" + this.state.email);
const user = {
name: this.state.name,
email: this.state.email,
password: this.state.password,
avatar: this.state.avatar
};
const response = firebaseSvc.login(
user,
this.loginSuccess,
this.loginFailed
);
};
loginSuccess = () => {
console.log("login successful, navigate to chat.");
this.props.navigation.navigate("TelaTeste", {
name: this.state.name,
email: this.state.email,
avatar: this.state.avatar
});
};
loginFailed = () => {
console.log("login failed ***");
alert("Login failure. Please tried again.");
};
onChangeTextEmail = email => this.setState({ email });
onChangeTextPassword = password => this.setState({ password });
render() {
LayoutAnimation.easeInEaseOut();
return (
<View style={styles.container}>
<KeyboardAvoidingView behavior="padding">
<Text style={styles.titulo}>{"CUDDLE"}</Text>
<View style={styles.errorMessage}>
{this.state.errorMessage && (
<Text style={styles.error}>{this.state.errorMessage}</Text>
)}
</View>
<View style={styles.form}>
<View>
<Text style={styles.inputTitle}>Email Address</Text>
<TextInput
style={styles.input}
autoCapitalize="none"
onChangeText={this.onChangeTextEmail}
value={this.state.email}
></TextInput>
</View>
<View style={{ marginTop: 32 }}>
<Text style={styles.inputTitle}>Password</Text>
<TextInput
style={styles.input}
secureTextEntry
autoCapitalize="none"
onChangeText={this.onChangeTextPassword}
value={this.state.password}
></TextInput>
</View>
</View>
<TouchableOpacity style={styles.button} onPress={this.onPressLogin}>
<Text style={{ color: "#FFF", fontWeight: "500" }}>Sign in</Text>
</TouchableOpacity>
<TouchableOpacity
style={{ alignSelf: "center", marginTop: 32 }}
onPress={() => this.props.navigation.navigate("Register")}
>
<Text style={{ color: "#414959", fontSize: 13 }}>
New to SocialApp?{" "}
<Text style={{ fontWeight: "500", color: "#5B2B80" }}>
Sign Up
</Text>
</Text>
</TouchableOpacity>
</KeyboardAvoidingView>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1
},
titulo: {
color: "#5B2B80",
fontSize: 30,
fontWeight: "bold",
textAlign: "center",
marginTop: 150
},
errorMessage: {
height: 72,
alignItems: "center",
justifyContent: "center",
marginHorizontal: 30
},
error: {
color: "#5B2B80",
fontSize: 13,
fontWeight: "600",
textAlign: "center"
},
form: {
marginBottom: 48,
marginHorizontal: 60
},
inputTitle: {
color: "#8A8F9E",
fontSize: 10,
textTransform: "uppercase"
},
input: {
borderBottomColor: "#8A8F9E",
borderBottomWidth: StyleSheet.hairlineWidth,
height: 40,
fontSize: 15,
color: "#161F3D"
},
button: {
marginHorizontal: 60,
backgroundColor: "#5B2B80",
borderRadius: 4,
height: 52,
alignItems: "center",
justifyContent: "center"
}
});
export default Login;
App.js
import Login from "./components/Login";
import CreateAccount from "./components/CreateAccount";
import Chat from "./components/Chat";
import TelaTeste from "./components/TelaTeste";
// Import React Navigation
import { createAppContainer } from "react-navigation";
import { createStackNavigator } from "react-navigation-stack";
const AppNavigator = createStackNavigator({
Login: { screen: Login },
CreateAccount: { screen: CreateAccount },
Chat: { screen: Chat },
TelaTeste: TelaTeste
});
export default createAppContainer(AppNavigator);
