Android webview localStorage

Question

I have a problem with a webview which may access to the localStorage by an HTML5 app  The test html file informs me that local  storage is nt supported by my browser  ie  the webview   If you have any suggestion     package com test HelloWebView   import android app Activity   import android content Context   import android os Bundle   import android util Log   import android view KeyEvent   import android webkit WebChromeClient   import android webkit WebSettings   import android webkit WebStorage   import android webkit WebView   import android webkit WebViewClient   public class HelloWebView extends Activity    WebView webview   public void onCreate Bundle savedInstanceState         super onCreate savedInstanceState        setContentView R layout main        webview    WebView  findViewById R id webview        webview getSettings   setJavaScriptEnabled true        webview setWebViewClient new HelloWebViewClient          webview loadUrl  file    android asset test html         WebSettings settings   webview getSettings         settings setJavaScriptEnabled true        settings setDatabaseEnabled true        String databasePath   this getApplicationContext   getDir  database   Context MODE PRIVATE  getPath         settings setDatabasePath databasePath       webview setWebChromeClient new WebChromeClient          public void onExceededDatabaseQuota String url  String databaseIdentifier  long currentQuota  long estimatedSize  long totalUsedQuota  WebStorage QuotaUpdater quotaUpdater                 quotaUpdater updateQuota 5   1024   1024                           public boolean onKeyDown int keyCode  KeyEvent event         if   keyCode    KeyEvent KEYCODE BACK   amp  amp  webview canGoBack               webview goBack             return true              return super onKeyDown keyCode  event       private class HelloWebViewClient extends WebViewClient        public boolean shouldOverrideUrlLoading WebView view  String url             view loadUrl url            return true

User · Answer

setDatabasePath   method was deprecated in API level 19  I advise you to use storage locale like this   webView getSettings   setDomStorageEnabled true   webView getSettings   setDatabaseEnabled true   if  Build VERSION SDK INT  lt  Build VERSION CODES KITKAT        webView getSettings   setDatabasePath   data data     webView getContext   getPackageName       databases

User · Answer

if you have multiple webview  localstorage does not work correctly  two suggestion      using java database instead webview localstorage that    Guillaume Gendre   explained  of course it does not work for me    local storage work like json so values store as  key value   you can add your browser unique id to it s key and using normal android localstorage

User · Answer

A solution that works on my Android 4 2 2  compiled with build target Android 4 4W   WebSettings settings   webView getSettings    settings setDomStorageEnabled true   settings setDatabaseEnabled true    if  Build VERSION SDK INT  lt  Build VERSION CODES KITKAT        File databasePath   getDatabasePath  yourDbName        settings setDatabasePath databasePath getPath

User · Answer

If your app use multiple webview you will still have troubles   localStorage is not correctly shared accross all webviews   If you want to share the same data in multiple webviews the only way is to repair it with a java database and a javascript interface   This page on github shows how to do this   hope this help

User · Answer

The following was missing   settings setDomStorageEnabled true

User · Answer

I ve also had problem with data being lost after application is restarted  Adding this helped   webView getSettings   setDatabasePath   data data     webView getContext   getPackageName       databases

[android] Android webview & localStorage

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