I have a webview, and I am logging into a website in it, and I want the auth cookies to persist the login, so I can just set the cookie for the user every time, so they don't need to log in every time.
Is this possible?
How can I get the cookie from the webview?
Here is my webview:
<View style={styles.container}>
<WebView
source={{ uri: "anywebsite.com" }}
onLoadStart={this.loadingStarted}
onLoad={this.loadingEnded}
/>
</View>
You can use react-native-cookies for handling cookies in RN.
Note that there is also an attribute on WebView called thirdPartyCookiesEnabled. You should try it out and see if it works for your case, cause manually setting and getting the cookies in the WebView takes some time to set up even with a library like react-native-cookies.
Related
I am trying to cache profile pictures that are being fetched from an s3 bucket. On my backend I am able to fetch the url of each image. I then can loop through an array of profiles (which have the pictures' urls) and display the correct images, as used below.
{profiles && profiles.map((profile) => {
<FastImage
source={{
uri: profile.picture, // this is a URL string
cache: FastImage.cacheControl.immutable // Default cache
}}
/>
})}
When I change cache from 'immutable' to 'cacheOnly' the pictures are no longer rendered.
{profiles && profiles.map((profile) => {
<FastImage
source={{
uri: profile.picture, // this is a URL
cache: FastImage.cacheControl.cacheOnly // picture only renders if in cache
}}
/>
})}
But, if I substitute the picture variable with the actual URL string, the picture will render.
{profiles && profiles.map((profile) => {
<FastImage
source={{
uri: 'https://s3.aws.examplePictureKey'
cache: FastImage.cacheControl.immutable // Default cache
}}
/>
})}
Then if I change cache from 'immutable' to 'cacheOnly' the picture persists, telling me it has been cached. What I am wondering is:
Am I making a mistake here? All the documentation/resources I have read through do not have examples when looping through an array, but I am not sure why this would be the problem.
My understanding is that the image cached is based on the url string, if the url does not change FastImage just gets the image in the cache. But the url is not changing, so why wouldn't the image be saved in the cache?
The example above is slimmed down from what I am actually doing, the only difference though is that I am passing each profile element from a parent component before trying to render the image. Would this somehow prevent the image from being cached?
Documentation: https://www.npmjs.com/package/react-native-fast-image
Thanks!
The cache: FastImage.cacheControl.cacheOnly from FastImage means it wont do any network request, it will just try to find from the cache. Default(immutable) means it will only change when the url changes so on any subsequent re-render, if the url changes to anything by chance, it will do network request again. And you need to return the component from map as well and provide the width and height properties to FastImage style as well.
{Array.isArray(profiles) && profiles.map((profile) => {
return <FastImage
source={{
uri: profile.picture, // this is a URL string
// cache: FastImage.cacheControl.immutable // Default cache
}}
style={{width: 200, height: 200}}
/>
})}
Hope it helps.
I'm trying to show some images in my React Native app. It's a simple app, only for Android. The app get informations from an API. The initial View is a list of items and when I click in one item, it gets more info from the API and show in a new page. I also get some urls that points to images that are kept in a S3 bucket in AWS.
This is how I show the images:
<ScrollView>
{this.state.urls.map(url => {
<Image
source={{uri: url}}
style={{width:400, height:200}}
/>
}
</ScrollView>
The problem is that it's not showing those images. I can see that there is a part of the page that is for the image. I can see that because if a put the image first and after that some text, the text will appear at the bottom of the page. I don't know what is going on that the image doesn't appear.
I searched for an answer, found something about using https instead of http (at least for iOS). Found that I need to set width and height. I already did those things and others but it's not working.
I also tried just picking a image from the internet and putting it url direct in uri but it still doesnt't work.
You're missing a return statement in your map function.
<ScrollView>
{this.state.urls.map(url => {
return <Image
source={{uri: url}}
style={{width:400, height:200}}
/>
}
</ScrollView>
UPDATE
I just tried the url that you provided in the above comment and it doesn't work on my device. I tried a different image from the internet this one and it works. There may also be something that is stopping you from accessing the images from within a mobile app.
To debug further I try would a single <Image .../> with the image hosted on AWS and see if you can get that to show. There may need to be some AWS configuration that you need to change to allow the image to be accessed from a mobile device.
Assuming your image URLs are accessible in your application.
The below code will show your images. Actually you forgot to return a component from the map which is a must have.
<ScrollView>
{this.state.urls.map(url => {
return <Image
source={{uri: url}}
style={{width:400, height:200}} /> }
}
</ScrollView>
I'm trying to use WebView to display a video hosted on reddit. The link i am using is https://v.redd.it/e3u0b3ej71k11/DASH_2_4_M which is for this post https://v.redd.it/e3u0b3ej71k11/ . On IOS the video will automatically go full screen and play but gives me this error
On android it doesn't give me an error but it has a video that is just black, but does have the correct run time. I'm not really sure how the endpoint DASH_2_4_M works but I got that url from reddit api.
<WebView
source={{uri: this.state.data[0].data.children[0].data.media.reddit_video.fallback_url}}
style={{height: 650, width: '100%'}}
bounces={false}
scrollEnable={false}
/>
I am trying to find a way to load image reference I get from places api into places photo API using Image component of react-native like below,
const imageLink = 'https://maps.googleapis.com/maps/api/place/photo?maxwidth=400&photoreference=CmRaAAAAuZ36wzrMYCVNWM1smQkRKuQyXecPgRpcsMfrSqbJM0EUTXZ62j8Ljxtk8HsxohXbtAwZAwmj_F3HmDwLoQaH9qt2TZJhhA6EuXK41UFo0Ow750MJujtrr5hgHR2lF7EXEhCkWj_dZ4LefrYzLU1_5RF1GhTR7Ggem5IJ-v7V2U8fjKoU9tBUOg&key=--MyKey--'
return (
<View >
<TouchableHighlight >
<View>
<Image
style={{width:64, height:64,flex:1,backgroundColor:'red'}}
source={{uri: imageLink}}
/>
</View>
</TouchableHighlight>
</View>
);
I am getting only empty placeholder with above code. However, I am able to load this link in browser.One caveat is that google places photo's link is redirecting to some other url which then displays image in browser. Am I doing it right? or is there any other way I can accomplish the same. Note: I tried react-native-network-image library as well.
You can have a look at the ImagePrefetch function in googleplace module:
https://github.com/srirangan/googleplaces.js/blob/master/test/ImageFetchTest.js
However, I am having issue with the whole module at the moment because of the line var https = require("https"); called in this specific function.
Not sure if it's an issue with new version of RN (upgraded to 0.55 recently) or just some other error in my new setup.
This worked perfectly in previous RN (was running on 0.48)
I want to get html in web view.
I read react-native-doc(https://facebook.github.io/react-native/docs/webview.html#content) but I cannot found it.
Can I do this?
None of the answers above worked for me, but this did. It displays the received html content of the webview in the console:
const jsCode = 'window.ReactNativeWebView.postMessage(document.documentElement.innerHTML)'
return (
<WebView
injectedJavaScript={jsCode}
source={{ uri: 'https://www.whatever.com' }}
onMessage={event => console.log('Received: ', event.nativeEvent.data)}
javaScriptEnabled
/>
)
I found this.
https://github.com/alinz/react-native-webview-bridge
But I could not use this in android. This works only in android.
I don't know this problem is only my problem or library problem.
In Android I use onNavigationStateChange.
Read https://github.com/facebook/react-native/issues/586#issuecomment-90826117
I think this is not good way. But I really need this. so I used this.
In case anyone comes across this in the future. You options here is to use javascript. You can use injectedJavaScript on the webview to inject a window.postmessge($('body').html()) and then handle the reply in the onMessage function on the webview. The cleaner way would be to fetch the page yourself and then load it into the webview.