Android Webview Error: 2ST #9740
Description
Checklist
- I have searched the existing issues for similar issues.
- I added a very descriptive title to this issue.
- I have provided sufficient information below to help reproduce this issue.
Summary
Basically, I tried to render this webpage: falibday.streamlit.app in Android Web View, and this error turns up, this is not because of my code tho, I tried a few other streamlit cloud webpages and it all ended up like this:
Reproducible Code Example
import streamlit as st
st.write("BRU WHY")Steps To Reproduce
- Create a Android app with manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:usesCleartextTraffic="true"
android:theme="@style/Theme.WEbBrowse"
tools:targetApi="31">
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<WebView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/web_view"/>
</RelativeLayout>MainActivity.java
package com.example.webbrowse;
import android.os.Bundle;
import android.util.Patterns;
import android.webkit.WebResourceRequest;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;
public class MainActivity extends AppCompatActivity {
WebView webView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView=findViewById(R.id.web_view);
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setBuiltInZoomControls(true);
webSettings.setDisplayZoomControls(false);
webView.setWebViewClient(new MyWebViewClient());
loadMyUrl("https://falibday.streamlit.app");
}
void loadMyUrl(String url){
boolean matchUrl = Patterns.WEB_URL.matcher(url).matches();
if (matchUrl){
webView.loadUrl(url);
}else{
webView.loadUrl("https://falibday.streamlit.app");
}
}
class MyWebViewClient extends WebViewClient{
@Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
return false;
}
}
}- Use the reporducible code above to send it onto cloud, and then render the url for ur deployed cloud using the android app code above.
Expected Behavior
I expect it to just render like on PC or on a normal Android phone browser.
Current Behavior
Error Message:
Error: Cannot read properties of null (reading 'getItem')
Code: 2ST
Is this a regression?
- Yes, this used to work in a previous version.
Debug info
- Streamlit and Python version: Streamlit Cloud Default
- Operating System: Android
- Browser: Web View Android APK
Additional Information
I posted this on discuss.streamlit.io but no one noticed, this is very urgent.