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) && 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;
}
}
}
This question is related to
android
html
webview
local-storage
android-webview
The following was missing:
settings.setDomStorageEnabled(true);
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!
if you have multiple webview, localstorage does not work correctly.
two suggestion:
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 < Build.VERSION_CODES.KITKAT) {
webView.getSettings().setDatabasePath("/data/data/" + webView.getContext().getPackageName() + "/databases/");
}
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/");
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 < Build.VERSION_CODES.KITKAT) {
File databasePath = getDatabasePath("yourDbName");
settings.setDatabasePath(databasePath.getPath());
}
Source: Stackoverflow.com