I'm using the latest Expo SDK. I use a non-detached project.
I need to load a css from local file in a WebView that loads an html from string like this:
<WebView source={{ baseUrl: './', html: this.fullPost }} />
Where this.fullPost looks like this
this.fullPost = `
<html>
<head>
<link rel="stylesheet" href="css/style.css" />
</head>
<body>some html that uses style.css</body>
</html>`;
So where should I put the style.css file and what should I specify as the baseUrl?
How should this with Expo?
Thank you.
The easiest way is to wrap your css code into a javascript file:
style.js:
const css = `
<style>
// copy your css file's content here
</style>
`;
export default css;
Then just import style from './style'; and you can simply concat the style to this.fullPost.
Related
I am loading the webview with local file by using below code,
<WebView
originWhitelist={["*"]}
allowFileAccess={true}
javaScriptEnabled={true}
androidLayerType={"hardware"}
source={Platform.OS === "android" ? { uri: "file:///android_asset/about.html" } : require("./constants/about.html")}
/>
Here, the "about.html" internally refers one another HTML file.
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
p {
color:black;font-family:arial;font-size:12px;
}
</style>
</head>
<body>
<p>Welcome</p>
<p>
Referring another Local HTML<a target="_blank" href=“another_Local.html">link</a>.
</p>
</body>
But this implementation is working fine iOS Platform, but the same is not working in Android. Please suggest.
You may need to use react-native-fs or expo-file-system to load any files in your react-native app.
Problem:
I should display offline a Html page stored in my react-native app, and for to do it I used WebView:
<WebView
originWhitelist={['*']}
source = {{uri:'file:///android_asset/index.html'}}
/>
but it load just html file without css and/or js, this is an example of my html page:
my file html is stored in: react-native-project->android->app->src->main->assets->web
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css" href="css/styles.css"/>
</head>
<body >
<h1>Hello World</h1>
</body>
</html>
this is an example of my css page:
my file css is stored in: react-native-project->android->app->src->main->assets->web->css
h1 {
color:red;
}
I have found this post on medium but not work for my and BaseUrl not work.
Question:
How I can display a Html page with relative file css and js connected to it offline on react-native?
can I use the cache how do react-native-offline-cache-webview ?
Thanks for your attention and sorry if my English is wrong but I'm not a native speaker bye
I'm developing an android app using cordova.
The index.html has the following:
<!DOCTYPE html>
<html>
<head>
<title>Mobile</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link type="text/css" rel="stylesheet" media="all" href="/style.css">
...
My problems concerns the link tag. Although logcat output shows the embedhttp server serving up the style.css, the styles don't get applied to the html.
In contrast, the js files I include, seem to be working perfectly fine.
<body>
<script type="text/javascript" src="/cordova.js"></script>
<script type="text/javascript" src="/lib/jquery-2.1.0.min.js"></script>
...
Has anyone else run into this issue?
I was experiencing the same problem and I solved writing the path to the images relative to css file location and not relative to .HTML file location.
I have the following structure:
css
index.css
images
mage1.png
index.html
My css class, declared inside índex.css file, must be like this one:
body {
background: url('../images/image1.png');
}
What you have to be aware of is that cordova counts relative paths differently than your normal browser. So I would recommend not using relative paths for images but use the absolute path from the project "home". Ex:
body {
background: url('images/image1.png');
}
This worked for me as I needed to keep a functioning version for a webapp as well as for a cordova nativified app.
i try to load in WebView a code HTML with CSS, in local. the file CSS is storage in sdcard0/Style/Template.css. Html code is:
<link rel="stylesheet" type="text/css" href="Style/Template.css" />
Java code is:
webView.loadData(source, "text/html", "UTF-8");
Not works.. i can't use Asset folder, there is any solution?
Have you tried using link href file ?
I'm trying to access the data inside the assets/css from an external HTML file.
The process goes like this:
<html>
<head>
<meta name="viewport" content="target-densitydpi=device-dpi, width=device-width, height=device-height, user-scalable=yes" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>ola</title>
<link rel="stylesheet" type="text/css" href="file:///android_asset/css/main.css" />
<link rel="stylesheet" type="text/css" href="file:///android_asset/css/sch.css" />
<script type="text/javascript" src="file:///android_asset/css/ethan.js" />
<script type="text/javascript" src="scripts/allinone.js" />
</head>
<body>
<input id="btnTest1" name="button" type="button" style="height:0px;width:0px;" />
</body>
</html>
So here the thing is that, I'm actually calling the HTML file using a link (since the HTML file is not locally present). But main.css, sch.css and ethan.js are locally present in the assets/css folder.
What I'm trying to do is to load the allinone.js which is obviously external and the other three files into the which are internal and run the script.
I found "file:///android_asset/css/main.css" but it looks like it doesn't work.
Please help....
I would be curious to know more about the use case here. My understanding is this:
You're loading an externally hosted HTML file into an Android Webview
You need to overlay some local styles/scripts, which can't be hosted on the external site along with the HTML (presumably because you're generating them dynamically).
If that's so -- and given that the logical approach you conceived of using the file:// URI does not work -- there would seem to be two options, each making use of the webView API:
Load the HTML file from the remote source, modify it, then set it as the webView's source. Locate the tag of the remote HTML and inject your local JS / CSS inline there.
Make use of the 'loadUrl' WebView method to inject your CSS/Javascript dynamically (this seems unnecessarily complicated if #1 is an option). For example:
mWebView.loadUrl("javascript:injectJavascript(js)");
where the parameter 'js' is some inline Javascript that you load within your Android code, and injectJavascript is a method in the remote HTML file that actually inserts it into your DOM. Take an analogous approach to insert your CSS ...
Admittedly these approaches are a bit hackish. Ideally you would use a custom method of the WebView class like 'addCssToDom' or something, but as far as I can see, no such methods are available.