WebView APP Example
This is a template project for Android Studio that allows you to create an android webview application in minutes. You can use it to create a simple app for your website or as a starting point for your HTML5 based android app.
Getting started
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Install Android Studio, make sure that the Android SDK Tools are properly installed and install the appropriate packages for the platforms you want to target.
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Download or clone this repository and import it into Android Studio.
Explaining the code
These are the basic settings of a good WEB APP with WebView:
AndroidManifest
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You must add the INTERNET permissions to your Android Manifest File
This must be a child of the
element. <uses-permission android:name="android.permission.INTERNET" />
MainActivity
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Getting WebView Settings (line 49)
WebSettings webSettings = webView.getSettings();
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Enabling JavaScript (line 52)
webSettings.setJavaScriptEnabled(true);
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Disable Support Zoom (recommendation) (line 55)
webSettings.setSupportZoom(false);
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Settings to enable/disable cache in WebView (line 58)
webView.setDrawingCacheEnabled(true);
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Settings to disable text selection in WebView (start in line 61)
webView.setOnLongClickListener(new View.OnLongClickListener() { @Override public boolean onLongClick(View v) { return true; } });
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Settings to enable Cookie in WebView (start in line 69)
CookieManager cookieManager = CookieManager.getInstance(); if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) { CookieSyncManager.createInstance(this); } cookieManager.setAcceptCookie(true);
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Set Up WebViewClient (start in line 75)
webView.setWebViewClient(new WebViewClient() { @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { if (Uri.parse(url).getHost().equals("www.example.com")) { // This is my web site, so do not override; let my WebView load the page return false; } // Otherwise, the link is not for a page on my site, so launch another Activity that handles URLs Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); startActivity(intent); return true; } @Override public void onPageStarted(WebView view, String url, Bitmap favicon) { // Page Started webView.setVisibility(View.INVISIBLE); progressBar.setVisibility(View.VISIBLE); } @Override public void onPageFinished(WebView view, String url) { // Page Finished progressBar.setVisibility(View.INVISIBLE); webView.setVisibility(View.VISIBLE); } @Override public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) { // In case of error } });
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Load resource (start in line 109)
// Use remote resource webView.loadUrl("http://www.example.com"); // Use local resource // webview.loadUrl("file:///android_asset/www/index.html");
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Function for reload WebView (start in line 116)
private void webViewReload() { webView.reload(); }
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Reload WebView on click item menu
@Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == R.id.reload) { webViewReload(); return true; } return super.onOptionsItemSelected(item); }
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Navigating web page history
@Override public void onBackPressed() { if (webView.canGoBack()) { webView.goBack(); } else { super.onBackPressed(); } }