We used to have a Cordova app that, when running on Appium, we could switch to Webview and execute JS commands using execute_script.
I would like to do the same thing on React Native to run some JS code (e.g., exposing a function on global or running something like console.disableYellowBox = true;). However, appium does not shows a Webview context to switch to and it seems to me the execute_script on native app context doesn't work.
Is there a way of doing a similar thing on RN client?
For ReactNative application there is no Webview context as RN is interpreted as NATIVE_APP one.
For finding elements its more interesting: there is no way to set resource-id for Android.
However you can set accessibilityLabel for your Views in React Native app and search for it like:
driver.findElementByAccessibilityId(accessibilityLabel)
Should work for both iOS/Android. Basically you should right your tests like you test Native app, not a Hybrid one.
And of course, you can use Xpath to search by text, but that I strongly do not recommend to do.
Related
I'm trying to automate a test with detox. The app under test is implemented using react-native but we have a screen that renders a WebView that load an url. In this case, I cannot use the accessibilityLabel or testID in order to access the elements displayed inside the WebView. Anyone know if there is a way to locate elements inside a WebView with detox?
There is currently no way to do so https://github.com/wix/detox/issues/665
A work around could be done by using this but if running on different screen sizes the test would probably fail https://github.com/wix/detox/issues/334#issuecomment-335802212
It's finally possible to interact with webview elements in Detox (only Android currently).
Check out this link
I'm trying to understand how I can do a signature capture in React Native. My App is created with create-react-native-app and Expo and I'd prefer to not have to eject the app to get this functionality to work.
Would it be possible to wrap something like this in a webview? https://github.com/szimek/signature_pad
I've also looked at this project, https://github.com/RepairShopr/react-native-signature-capture but it requires me to eject the app and use react-native link.
Looking for any advice or suggestions on how to implement this feature while keeping my project as straightforward as possible (ideally, using create-react-native-app, but if this isn't possible could someone please explain to me why?)
The way React Native works is that each component available in React Native maps to a native component in the underlying platform.
ie. a <Image /> is an ImageView in Android and a UIImageView.h in iOS.
The Javascript code itself runs in a Javascript thread on each platform and as you use Components in React Native, there's a translation layer that passes information from JS into the React Native bridge that then results in corresponding native components being created.
By default, React Native has included the following components: https://facebook.github.io/react-native/docs/components-and-apis.html#basic-components which means that only those components come out-of-the-box in React Native. If you want other components, then you have 2 options, either create a "composite" component in which your JS component is written into other JS components or, if your feature needs a native component not yet exposed by React Native, write your own "native" component to expose certain native functionality to your React Native code.
The way Expo works is that they have wrapped React Native and a handful of 3rd party components and built it within their application. The reason why you can't use a 3rd party native component they don't support is because when that component is used, the app itself doesn't have translation code to go from JS to a native Android/iOS view.
So, to do what you're asking, you'd need to find either a "native" drawing component that Expo has included in their platform/app. OR you need to find a "composite" drawing component that is built with other default React Native components (or other components Expo supports).
ie. On Android, I might build this with a Canvas view, but from what I can tell React Native doesn't support that object natively, so I would probably write this myself, etc.
It's hard for Expo to support every 3rd party "native" component out there because React Native is open source and it iterates so fast that most community-built components aren't always up to date or they might conflict with one another.
I am using react-native-signature-capture.
Working properly on both Android and iOS.
I know it's been a while, but there is an interesting article here: https://blog.expo.io/drawing-signatures-with-expo-25d1629ca1ac
Wait, but how?
Using “expo-pixi”, you can add a component that lets you choose your brush’s color, thickness, and opacity. Then when your user lifts her finger, you get a callback. From there you can take a screenshot of the transparent view or get the raw point data if that’s what you’re looking for.
The official documentation for React Native explains how to add React Native views to existing native applications. However, it does not explain how to run React Native code written in JavaScript from a native application, without having to display any React Native component. Does the framework provide a way to do this?
I think reason being, R-N works on top of Native components and not other way round. I have not come across anything that you are looking.
Is it possible to pass a javascript function from React Native onto iOS Native components such as a UIButton and execute there?
It is possible, but using events and not by sending JS to native components. Check out react-native docs for detailed information, but generally:
React Native enables you to perform cross-language function calls. You
can execute custom native code from JS and vice versa. Unfortunately,
depending on the side we are working on, we achieve the same goal in
different ways. For native - we use events mechanism to schedule an
execution of a handler function in JS, while for React Native we
directly call methods exported by native modules.
Update: looks like this is implemented now with IntentAndroid! https://facebook.github.io/react-native/docs/intentandroid.html#content
-- original post --
I am writing an Android app with React Native. I would like to display a hyperlink that will launch the user's default browser and open the linked URL. How can I do this?
There is LinkingIOS for iOS apps, is there some equivalent for Android?
Or am I going to have to create a component that wraps something like this (Java):
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.com"));
startActivity(browserIntent);
OK it looks like what I wanted isn't a react component just yet, but I found this awesome component that is exactly what I want: https://github.com/ivanph/react-native-webintent/