Geek Answers Handbook

HTTP POST response in webview in android

I am trying to connect to a page using HTTP After. I am creating an http post to create a webview. I need to redirect to another page from web view. But when the Continue button is clicked, an exception is thrown.

My code

public class ZHttpPostProjActivity extends Activity { /** Called when the activity is first created. */ private WebView mWebView; private ProgressDialog progressBar; private static final String TAG = "ZHttpPostProjActivity"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.web_view); mWebView = (WebView) findViewById(R.id.webview); WebSettings webSettings = mWebView.getSettings(); webSettings.setJavaScriptEnabled(true); webSettings.setDomStorageEnabled(true); progressBar = ProgressDialog.show(ZHttpPostProjActivity.this, "", "Loading..."); postData(); } private final String URL_REGISTER = "https://www.paypal.com/checkout"; public void postData() { BufferedReader bufferedReader = null; try { List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(); nameValuePairs.add(new BasicNameValuePair("username", "username")); nameValuePairs.add(new BasicNameValuePair("password", "password")); HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost(URL_REGISTER); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs, HTTP.UTF_8)); HttpResponse response = httpclient.execute(httppost); bufferedReader = new BufferedReader(new InputStreamReader(response .getEntity().getContent())); StringBuffer stringBuffer = new StringBuffer(""); String line = ""; String LineSeparator = System.getProperty("line.separator"); while ((line = bufferedReader.readLine()) != null) { stringBuffer.append(line + LineSeparator); } bufferedReader.close(); String webData = stringBuffer.toString(); Log.i(TAG + "web data : ", webData); // String webData = new // BasicResponseHandler().handleResponse(response); Log.i(TAG, "Httppost.getURI().toString(): " + httppost.getURI().toString()); mWebView.setWebViewClient(new WebViewClient() { public boolean shouldOverrideUrlLoading(WebView view, String url) { Log.i(TAG, "Processing webview url click..."); view.loadUrl(url); return true; } public void onPageFinished(WebView view, String url) { Log.i(TAG, "Finished loading URL: " + url); if (progressBar.isShowing()) { progressBar.dismiss(); } } public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { Log.e(TAG, "Error: " + description + " \n errorCode: " + errorCode + "\n failingUrl: " + failingUrl); } }); // mWebView.loadUrl(httppost.getURI().toString()); mWebView.loadData(webData, "text/html", "UTF-8"); mWebView.loadDataWithBaseURL(httppost.getURI().toString(), webData, "text/html", HTTP.UTF_8, null); } catch (Exception ex) { ex.printStackTrace(); } }

When you click Continue in a web browser, an exception is thrown

 02-21 11:42:38.539: E/webviewdatabase(2848): Failed in setFormData 02-21 11:42:38.539: E/webviewdatabase(2848): java.net.MalformedURLException: Unknown protocol: about 02-21 11:42:38.539: E/webviewdatabase(2848): at java.net.URL.<init>(URL.java:288) 02-21 11:42:38.539: E/webviewdatabase(2848): at java.net.URL.<init>(URL.java:157) 02-21 11:42:38.539: E/webviewdatabase(2848): at android.webkit.WebViewDatabase.setFormData(WebViewDatabase.java:1032) 02-21 11:42:38.539: E/webviewdatabase(2848): at android.webkit.BrowserFrame.loadStarted(BrowserFrame.java:384) 02-21 11:42:38.539: E/webviewdatabase(2848): at android.webkit.JWebCoreJavaBridge.sharedTimerFired(Native Method) 02-21 11:42:38.539: E/webviewdatabase(2848): at android.webkit.JWebCoreJavaBridge.fireSharedTimer(JWebCoreJavaBridge.java:91) 02-21 11:42:38.539: E/webviewdatabase(2848): at android.webkit.JWebCoreJavaBridge.handleMessage(JWebCoreJavaBridge.java:108) 02-21 11:42:38.539: E/webviewdatabase(2848): at android.os.Handler.dispatchMessage(Handler.java:99) 02-21 11:42:38.539: E/webviewdatabase(2848): at android.os.Looper.loop(Looper.java:123) 02-21 11:42:38.539: E/webviewdatabase(2848): at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:673) 02-21 11:42:38.539: E/webviewdatabase(2848): at java.lang.Thread.run(Thread.java:1019) 02-21 11:42:41.324: E/cache(2848): illegal expires: Sat, Jan 01 2000 01:01:01 GMT
+7
source share
2 answers

Use it as

 WebView webview = new WebView(this); setContentView(webview); byte[] post = EncodingUtils.getBytes("postvariable=value&nextvar=value2", "BASE64"); webview.postUrl("http://www.geenie.nl/AnHeli/mobile/ranking/demo/index.php", post);
+8
source

I'm not sure if this is the cause of your failure, or if it leads to an error, but since you are doing POST, remove the "?" at the end of the URL_REGISTER variable.

 private final String URL_REGISTER = "https://www.paypal.com/checkout?";

"?" only required when executing a GET request.

David

+1
source

More articles:


All Articles