Let's assume I want to implement a file explorer with directory structure. I created a React Native component that lists files and directories of a specific folder. When I click on a folder, I expect to go inside the new folder and list its files and folders. Obviously, I am hoping to be able to use the same React component to render the different folders.
I use StackNavigator. Here is my code
Here is my attempt which does not work:
import React, { Component } from 'react';
import {
AppRegistry,
BackHandler,
ListView,
StyleSheet,
Text,
TouchableNativeFeedback,
View
} from 'react-native';
import {
StackNavigator,
} from 'react-navigation';
export default class FileExplorerScene extends Component {
// Initialize the hardcoded data
constructor(props) {
super(props);
// Empty list before adding entries
const ds = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 !== r2 });
this.state = {
dataSource: ds.cloneWithRows(['a', 'b', 'c'])
};
}
onPress(rowData) {
console.log("onPress(" + rowData + ")");
this.props.navigation.navigate('FileExplorer', { parent: rowData });
}
goBack() {
this.props.navigation.goBack();
return true;
}
componentWillMount() {
BackHandler.addEventListener('hardwareBackPress', this.goBack.bind(this));
}
renderRow(rowData, sectionID, rowID) {
return (
<TouchableNativeFeedback onPress={ () => { this.onPress(rowData); }}>
<Text style={{ margin:5, fontSize: 20}}>{ rowData }</Text>
</TouchableNativeFeedback>
);
}
render() {
const { params } = this.props.navigation.state;
var currentPath;
if (params) {
currentPath = (<Text style={{ margin:10, fontSize: 24}}>Current Path: {params.parent}</Text>);
} else {
currentPath = (<Text style={{ margin:10, fontSize: 24}}>Root path</Text>);
}
return (
<View>
{ currentPath }
<ListView
dataSource={this.state.dataSource}
renderRow={this.renderRow.bind(this)}
enableEmptySections={true}
/>
</View>
);
}
}
const App = StackNavigator(
{
FileExplorer: { screen: FileExplorerScene },
},{
headerMode: 'none',
}
);
AppRegistry.registerComponent('ReactProject', () => App);
Click on a: I can see
Current Path: aI/ReactNativeJS( 1125): onPress(a) I/ReactNativeJS( 1125): 'Navigation Dispatch: ', { action: I/ReactNativeJS( 1125): { type: 'Navigation/NAVIGATE', I/ReactNativeJS( 1125): routeName: 'FileExplorer', I/ReactNativeJS( 1125): params: { parent: 'a' }, I/ReactNativeJS( 1125): action: undefined }, I/ReactNativeJS( 1125): newState: I/ReactNativeJS( 1125): { index: 1, I/ReactNativeJS( 1125): routes: I/ReactNativeJS( 1125): [ { routeName: 'FileExplorer', key: 'Init-id-1497310673011-0' }, I/ReactNativeJS( 1125): { params: { parent: 'a' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-1', I/ReactNativeJS( 1125): routeName: 'FileExplorer' } ] }, I/ReactNativeJS( 1125): lastState: I/ReactNativeJS( 1125): { index: 0, I/ReactNativeJS( 1125): routes: [ { routeName: 'FileExplorer', key: 'Init-id-1497310673011-0' } ] } }Click on b: I can see
Current Path: bI/ReactNativeJS( 1125): onPress(b) I/ReactNativeJS( 1125): 'Navigation Dispatch: ', { action: I/ReactNativeJS( 1125): { type: 'Navigation/NAVIGATE', I/ReactNativeJS( 1125): routeName: 'FileExplorer', I/ReactNativeJS( 1125): params: { parent: 'b' }, I/ReactNativeJS( 1125): action: undefined }, I/ReactNativeJS( 1125): newState: I/ReactNativeJS( 1125): { index: 2, I/ReactNativeJS( 1125): routes: I/ReactNativeJS( 1125): [ { routeName: 'FileExplorer', key: 'Init-id-1497310673011-0' }, I/ReactNativeJS( 1125): { params: { parent: 'a' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-1', I/ReactNativeJS( 1125): routeName: 'FileExplorer' }, I/ReactNativeJS( 1125): { params: { parent: 'b' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-2', I/ReactNativeJS( 1125): routeName: 'FileExplorer' } ] }, I/ReactNativeJS( 1125): lastState: I/ReactNativeJS( 1125): { index: 1, I/ReactNativeJS( 1125): routes: I/ReactNativeJS( 1125): [ { routeName: 'FileExplorer', key: 'Init-id-1497310673011-0' }, I/ReactNativeJS( 1125): { params: { parent: 'a' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-1', I/ReactNativeJS( 1125): routeName: 'FileExplorer' } ] } }Click on c: I can see
Current Path: cI/ReactNativeJS( 1125): onPress(c) I/ReactNativeJS( 1125): 'Navigation Dispatch: ', { action: I/ReactNativeJS( 1125): { type: 'Navigation/NAVIGATE', I/ReactNativeJS( 1125): routeName: 'FileExplorer', I/ReactNativeJS( 1125): params: { parent: 'c' }, I/ReactNativeJS( 1125): action: undefined }, I/ReactNativeJS( 1125): newState: I/ReactNativeJS( 1125): { index: 3, I/ReactNativeJS( 1125): routes: I/ReactNativeJS( 1125): [ { routeName: 'FileExplorer', key: 'Init-id-1497310673011-0' }, I/ReactNativeJS( 1125): { params: { parent: 'a' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-1', I/ReactNativeJS( 1125): routeName: 'FileExplorer' }, I/ReactNativeJS( 1125): { params: { parent: 'b' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-2', I/ReactNativeJS( 1125): routeName: 'FileExplorer' }, I/ReactNativeJS( 1125): { params: { parent: 'c' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-3', I/ReactNativeJS( 1125): routeName: 'FileExplorer' } ] }, I/ReactNativeJS( 1125): lastState: I/ReactNativeJS( 1125): { index: 2, I/ReactNativeJS( 1125): routes: I/ReactNativeJS( 1125): [ { routeName: 'FileExplorer', key: 'Init-id-1497310673011-0' }, I/ReactNativeJS( 1125): { params: { parent: 'a' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-1', I/ReactNativeJS( 1125): routeName: 'FileExplorer' }, I/ReactNativeJS( 1125): { params: { parent: 'b' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-2', I/ReactNativeJS( 1125): routeName: 'FileExplorer' } ] } }Go Back. I can see
Current Path: bI/ReactNativeJS( 1125): goBack() I/ReactNativeJS( 1125): 'Navigation Dispatch: ', { action: { type: 'Navigation/BACK', key: 'id-1497310673011-3' }, I/ReactNativeJS( 1125): newState: I/ReactNativeJS( 1125): { index: 2, I/ReactNativeJS( 1125): routes: I/ReactNativeJS( 1125): [ { routeName: 'FileExplorer', key: 'Init-id-1497310673011-0' }, I/ReactNativeJS( 1125): { params: { parent: 'a' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-1', I/ReactNativeJS( 1125): routeName: 'FileExplorer' }, I/ReactNativeJS( 1125): { params: { parent: 'b' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-2', I/ReactNativeJS( 1125): routeName: 'FileExplorer' } ] }, I/ReactNativeJS( 1125): lastState: I/ReactNativeJS( 1125): { index: 3, I/ReactNativeJS( 1125): routes: I/ReactNativeJS( 1125): [ { routeName: 'FileExplorer', key: 'Init-id-1497310673011-0' }, I/ReactNativeJS( 1125): { params: { parent: 'a' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-1', I/ReactNativeJS( 1125): routeName: 'FileExplorer' }, I/ReactNativeJS( 1125): { params: { parent: 'b' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-2', I/ReactNativeJS( 1125): routeName: 'FileExplorer' }, I/ReactNativeJS( 1125): { params: { parent: 'c' }, I/ReactNativeJS( 1125): key: 'id-1497310673011-3', I/ReactNativeJS( 1125): routeName: 'FileExplorer' } ] } }Go Back. No change
I/ReactNativeJS( 1125): goBack()Go Back. No change
I/ReactNativeJS( 1125): goBack()
Do I use goBack correctly? Or it is an issue in StackNavigator?
