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Example for React Native 0.63.4 (with ios) #203

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merged 5 commits into from
Jan 19, 2021
Merged

Example for React Native 0.63.4 (with ios) #203

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735f904
Add working example for ios
Jan 15, 2021
8da6282
Update readme
Jan 15, 2021
0bbba56
Add comment on postMessage method
makedonsky94 Jan 15, 2021
0c3bda4
Update readme
makedonsky94 Jan 15, 2021
911771d
Update ios project file
makedonsky94 Jan 15, 2021
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13 changes: 9 additions & 4 deletions react-native/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -3,14 +3,19 @@
## How to start - Android

1. Setup the development environment. [React Native Docs](https://reactnative.dev/docs/environment-setup)
1. Run "npm install" in the project root folder. Wait until the installation completes.
2. Open android/app/src/main/assets.
2. Run "npm install" in the project root folder. Wait until the installation completes.
3. Open android/app/src/main/assets.
4. Copy all files from https://github.com/tradingview/charting_library/. The earliest supported version of the Charting Library is 1.12. If you get 404 then you need to [request an access to this repository](https://www.tradingview.com/HTML5-stock-forex-bitcoin-charting-library/).
2. Run "npx react-native run-android" to start installing the application to a device.
5. Run "npx react-native run-android" to start installing the application to a device.

## How to start - iOS

Currently unavailable.
1. Setup the development environment. [React Native Docs](https://reactnative.dev/docs/environment-setup)
2. Run "npm install" in the project root folder. Wait until the installation completes.
3. Open Example.xcodeproj in Xcode.
4. Right click on Example and select "Add Files to "Example"".
5. Copy all files from https://github.com/tradingview/charting_library/. The earliest supported version of the Charting Library is 1.12. If you get 404 then you need to [request an access to this repository](https://www.tradingview.com/HTML5-stock-forex-bitcoin-charting-library/).
6. Run "npx react-native run-ios" to start installing the application to a device.

## What is Charting Library

Expand Down
30 changes: 15 additions & 15 deletions react-native/app/android.app.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,19 +6,19 @@ import { WebView } from 'react-native-webview';
class AndroidChart extends Component {

jsToInject = `
tvWidget.onChartReady(function() {
tvWidget.chart().onIntervalChanged().subscribe(
null,
function(interval) {
window.ReactNativeWebView.postMessage({
type: "onIntervalChanged",
interval: interval
});
}
);
});
true; // note: this is required, or you'll sometimes get silent failures
// (https://github.com/react-native-webview/react-native-webview/blob/master/docs/Guide.md)
tvWidget.onChartReady(function() {
tvWidget.chart().onIntervalChanged().subscribe(
null,
function(interval) {
const response = { type: "onIntervalChanged", interval: interval }
//window.ReactNativeWebView.postMessage accepts one argument, data,
//which will be available on the event object, event.nativeEvent.data. data must be a string.
window.ReactNativeWebView.postMessage(JSON.stringify(response));
}
);
});
true; // note: this is required, or you'll sometimes get silent failures
// (https://github.com/react-native-webview/react-native-webview/blob/master/docs/Guide.md)
`;

render() {
Expand All @@ -34,9 +34,9 @@ class AndroidChart extends Component {
onShouldStartLoadWithRequest={() => false}
injectedJavaScript={this.jsToInject}
onMessage={(event) => {
const data = event.nativeEvent.data
const data = JSON.parse(event.nativeEvent.data)
if (data.type == "onIntervalChanged") {
ToastAndroid.show("Interval = " + event.nativeEvent.data, ToastAndroid.SHORT);
ToastAndroid.show("Interval = " + data.interval, ToastAndroid.SHORT);
}
}}
/>
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65 changes: 52 additions & 13 deletions react-native/app/ios.app.js
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Original file line number Diff line number Diff line change
@@ -1,20 +1,59 @@
import React from 'react';
import { SafeAreaView } from 'react-native';
import React, { Component } from 'react';
import { SafeAreaView, Alert } from 'react-native';
import { WebView } from 'react-native-webview';


class IOsChart extends Component {

jsToInject = `
tvWidget.onChartReady(function() {
tvWidget.chart().onIntervalChanged().subscribe(
null,
function(interval) {
const response = { type: "onIntervalChanged", interval: interval }
//window.ReactNativeWebView.postMessage accepts one argument, data,
//which will be available on the event object, event.nativeEvent.data. data must be a string.
window.ReactNativeWebView.postMessage(JSON.stringify(response));
}
);
});
true; // note: this is required, or you'll sometimes get silent failures
// (https://github.com/react-native-webview/react-native-webview/blob/master/docs/Guide.md)
`;

render() {
return (
<SafeAreaView
style={{flex: 1}}
>
<WebView
style={{flex: 1}}
source={{ uri: 'index.html' }}
allowFileAccessFromFileURLs={true}
originWhitelist={["*"]}
injectedJavaScript={this.jsToInject}
onMessage={(event) => {
const data = JSON.parse(event.nativeEvent.data)
if (data.type == "onIntervalChanged") {
Alert.alert(
'onIntervalChanged',
"Interval = " + data.interval,
[
{ text: 'OK', onPress: () => console.log('OK Pressed') }
],
{ cancelable: true }
);
}
}}
/>
</SafeAreaView>
);
}
}

const IOsApp = () => {
return (
<SafeAreaView
style={{flex:1}}
>
<WebView
style={{flex: 1}}
source={{ uri: 'index.html' }}
allowFileAccessFromFileURLs={true}
originWhitelist={["*"]}
allowingReadAccessToURL={"*"}
/>
</SafeAreaView>
<IOsChart />
);
};
module.exports = IOsApp
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