mWebView = (WebView) findViewById(R.id.htmlview);
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
mWebView.addJavascriptInterface(new DemoJavaScriptInterface(),
"demo"); mWebView.loadUrl("file:///android_asset/demo.html");
i know how to invoke a page's javascript,but if the page have no the js i need.if i can invoke a js that i write?
webview of android;
thanks
Haven't done this before, but this looks good for me: How to append additional text with existing html content in android?
It says, after loading the page into your WebView, you can just execture JavaScript by calling
myWebView.loadUrl("javascript:alert('My JavaScript Call')");
So many way to call javascript in your web view
myWebView.loadUrl("javascript:testEcho('Hello World!')");
or
public void run(final String scriptSrc) {
webView.post(new Runnable() {
#Override
public void run() {
webView.loadUrl("javascript:" + scriptSrc);
}
});
}
or
public void run(final String scriptSrc) {
webView.post(new Runnable() {
#Override
public void run() {
webView.loadUrl("javascript:" + scriptSrc);
}
});
}
this question to help me achieve this task for me.
You can also use WebViewClient for call java script.
webView.setWebViewClient(new WebViewClient(){
#Override
public void onPageFinished (WebView webView, String url)
{
webView.loadUrl("javascript:document.getElementById('login_player').value='"+username+"';javascript:document.getElementById('login_passwd').value = '"+Password+"';");
}
});
for more help u can also see this link .
Related
got a webview loading a page on finished the javascript function getting called
but when i try to browser.loadUrl to new page this not working
how can i change the current page of webview after this loaded?
code:
browser = (WebView) findViewById(R.id.w1);
browser.getSettings().setJavaScriptEnabled(true);
browser.getSettings().setDomStorageEnabled(true);
browser.addJavascriptInterface(this, "HTMLOUT");
browser.setWebViewClient(new WebViewClient() {
#Override
public void onPageFinished(WebView view, String url) {
browser.loadUrl("javascript:window.HTMLOUT.processHTML('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>');");
}
});
browser.loadUrl("page1");
#JavascriptInterface
public void processHTML(String html) {
if (html == null)
return;
browser.loadUrl("page2"); <----
here are some suggestions, hope it helps
You should use view.loadUrl in onPageFinished
To avoid infinity reload page, you should check url in onPageFinished
Following is a rough sample (without loading javascript), sometimes onPageFinished may need time to load, just wait for a second
WebView browser = new WebView(MainActivity.this);
browser.getSettings().setJavaScriptEnabled(true);
browser.getSettings().setDomStorageEnabled(true);
browser.setWebViewClient(new WebViewClient() {
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
if(!url.contains("google")){
Log.i("test", "onPageFinished, reload another");
view.loadUrl("https://www.google.com");
}
}
});
browser.loadUrl("https://www.yahoo.com");
I am getting message 'Server hangup' when loading url into webView and this message is not implemented in either Android side or server side. If anyone knows how to solve this issue, Please help. Thanks
I have used following code:
private WebView mWebview;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mWebview = new WebView(this);
mWebview.getSettings().setJavaScriptEnabled(true);
webView.setWebChromeClient(new MyWebChromeClient(this));
mWebview .loadUrl("our server url");
setContentView(mWebview);
}
private class MyWebChromeClient extends WebChromeClient {
Context context;
public MyWebChromeClient(Context context) {
super();
this.context = context;
}
}
Please check screenshot
Google.com is secure domain. You have to use https://www.google.com instead of http://www.google.com.
Please use this method and set your website url :
Example :startWebView("https://stackoverflow.com");
private void startWebView(String url) {
WebSettings settings = webview.getSettings();
settings.setJavaScriptEnabled(true);
webview.setScrollBarStyle(View.SCROLLBARS_OUTSIDE_OVERLAY);
webview.getSettings().setBuiltInZoomControls(true);
webview.getSettings().setUseWideViewPort(true);
webview.getSettings().setLoadWithOverviewMode(true);
webview.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
}
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Toast.makeText(getApplicationContext(), "Error:" + description, Toast.LENGTH_SHORT).show();
}
});
webview.loadUrl(url);
}
Webview shows you the HTML returned by the URL that has been loaded.
onReceivedError() will not be called if you get response containing the error message.
Check what you receive as HTML from server using the following code in onPageFinished().
webView.evaluateJavascript(
"(function() { return ('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>'); })();",
new ValueCallback<String>() {
#Override
public void onReceiveValue(String html) {
// displays the HTML received after the URL is loaded.
Log.e("#Eval", "Html -> " + html);
}
});
As you have mentioned that the message is not implemented in your app, it must have been be received from the server end.
I created an Activity that has a title and a web view in a LinearLayout. In the onResume() method it calls webView.loadUrl(url). The problem is that the activity first shows the title with the rest of the screen blank, then the device browser is launched with the page for the URL. What I want to see is the page being shown in the WebView below the title. What could be the problem?
Edit:
Ok, did some further search and found this one:
Clicking URLs opens default browser
It points to the WebView tutorial here.
Just implement the web client and set it.
Answering my question based on the suggestions from Maudicus and Hit.
Check the WebView tutorial here.
Just implement the web client and set it before loadUrl. The simplest way is:
myWebView.setWebViewClient(new WebViewClient());
For more advanced processing for the web content, consider the ChromeClient.
Use this:
lWebView.setWebViewClient(new WebViewClient());
use like this:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dedline);
WebView myWebView = (WebView) findViewById(R.id.webView1);
myWebView.setWebViewClient(new WebViewClient());
myWebView.loadUrl("https://google.com");
}
Make your Activity like this.
public class MainActivity extends Activity {
WebView browser;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// find the WebView by name in the main.xml of step 2
browser=(WebView)findViewById(R.id.wvwMain);
// Enable javascript
browser.getSettings().setJavaScriptEnabled(true);
// Set WebView client
browser.setWebChromeClient(new WebChromeClient());
browser.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});
// Load the webpage
browser.loadUrl("http://google.com/");
}
}
I was facing the same problem and I found the solution
Android's official Documentation about WebView
Here is my onCreateView() method and here i used two methods to open the urls
Method 1 is opening url in Browser and
Method 2 is opening url in your desired WebView.
And I am using Method 2 for my Application and this is my code:
public class MainActivity extends Activity {
private WebView myWebView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_webpage_detail, container, false);
// Show the dummy content as text in a TextView.
if (mItem != null) {
/* Method : 1
This following line is working fine BUT when we click the menu item then it opens the URL in BROWSER not in WebView */
//((WebView) rootView.findViewById(R.id.detail_area)).loadUrl(mItem.url);
// Method : 2
myWebView = (WebView) rootView.findViewById(R.id.detail_area); // get your WebView form your xml file
myWebView.setWebViewClient(new WebViewClient()); // set the WebViewClient
myWebView.loadUrl(mItem.url); // Load your desired url
}
return rootView;
} }
Try this code...
private void startWebView(String url) {
//Create new webview Client to show progress dialog
//When opening a url or click on link
webView.setWebViewClient(new WebViewClient() {
ProgressDialog progressDialog;
//If you will not use this method url links are opeen in new brower not in webview
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
//Show loader on url load
public void onLoadResource (final WebView view, String url) {
if (progressDialog == null) {
// in standard case YourActivity.this
progressDialog = new ProgressDialog(view.getContext());
progressDialog.setMessage("Loading...");
progressDialog.show();
}
}
public void onPageFinished(WebView view, String url) {
try{
if (progressDialog.isShowing()) {
progressDialog.dismiss();
progressDialog = null;
}
}catch(Exception exception){
exception.printStackTrace();
}
}
});
// Javascript inabled on webview
webView.getSettings().setJavaScriptEnabled(true);
// Other webview options
/*
webView.getSettings().setLoadWithOverviewMode(true);
webView.getSettings().setUseWideViewPort(true);
webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
webView.setScrollbarFadingEnabled(false);
webView.getSettings().setBuiltInZoomControls(true);
*/
/*
String summary = "<html><body>You scored <b>192</b> points.</body></html>";
webview.loadData(summary, "text/html", null);
*/
//Load url in webview
webView.loadUrl(url);
}
If you see an empty page, enable JavaScript.
webView.setWebViewClient(new WebViewClient());
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setDomStorageEnabled(true);
webView.loadUrl(url);
Simply Answer you can use like this
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
WebView webView = new WebView(this);
setContentView(webView);
webView.setWebViewClient(new WebViewClient());
webView.loadUrl("http://www.google.com");
}
}
If you're using webChromeClient I'll suggest you to use webChromeClient and webViewClient together. because webChromeClient does not provides shouldOverrideUrlLoading. It is okay to use both.
webview.webViewClient = WebViewClient()
webview.webChromeClient = Callback()
private inner class Callback : WebChromeClient() {
override fun onProgressChanged(view: WebView?, newProgress: Int) {
super.onProgressChanged(view, newProgress)
if (newProgress == 0) {
progressBar.visibility = View.VISIBLE
} else if (newProgress == 100) {
progressBar.visibility = View.GONE
}
}
}
I just found out that it depends on the formatting of the URL:
https://example.com/example gets opened in the browser
https://example.com/example/ (with / at the end) gets opened in the webView
My code just uses
webview.loadUrl(url)
no need to set
webView.setWebViewClient(new WebViewClient())
at least in my case.
Maybe that's useful for some of you.
My problem ended up being that I needed to do a clearHistory before I could switch between sites without opening an external browser.
#Override
public void onPageFinished(WebView view, String url) {
webView_.clearHistory();
super.onPageFinished(webView_, url);
}
I am trying to access the url using the shouldOverrideUrlLoading method. For some reason when I try to access the url that are present in the html files, I get Web page not available error.Previously I could access the url because I stored my html file in the raw folder but I needed to move it to assets folder as the code looks cleaner this way. This is my code, could anyone let me know how I can resolve this.
webview.setWebChromeClient(new WebChromeClient());
webview.setWebViewClient(new WebViewClient());
webview.loadUrl("file:///android_asset/myfile/file.html");
webview.setVerticalScrollBarEnabled(false);
webview.setWebViewClient(new WebViewClient()
{
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.equalsIgnoreCase("some text")){
setDialog("some fancy text");
}
Try to get the Real Path of the file first and then try as your way like this:
String YourURI="/android_asset/myfile/file.html";
YourURI = new File(getRealPathFromURI(YourURI));
//Got the Real Path Of the File
private String getRealPathFromURI(Uri contentURI) {
Cursor cursor = getContentResolver().query(contentURI, null, null, null, null);
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
return cursor.getString(idx);
}
webview.setWebChromeClient(new WebChromeClient());
webview.setWebViewClient(new WebViewClient());
webview.loadUrl(YourURI); //**Used the Real Path**
webview.setVerticalScrollBarEnabled(false);
webview.setWebViewClient(new WebViewClient()
{
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.equalsIgnoreCase("some text")){
setDialog("some fancy text");
}
}
If the File is in the SDCARD :-
webview.setWebChromeClient(new WebChromeClient());
webview.setWebViewClient(new WebViewClient());
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
{
Log.d(TAG, "No SDCARD");
}
else
{
webview.loadUrl("file://"+Environment.getExternalStorageDirectory()
+"/android_asset/myfile/file.html");
}
webview.setVerticalScrollBarEnabled(false);
webview.setWebViewClient(new WebViewClient()
{
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.equalsIgnoreCase("some text")){
setDialog("some fancy text");
}
}
Final Edit:- This Code Works Perfectly for Asset Folder
public class MyActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.webview);
WebView webview;
webview = (WebView) findViewById(R.id.webView1);
webview.loadUrl("file:///android_asset/myfile/file.html");
}
}
There is another way that would also work for you---
webView.loadData(customHtml, "text/html", "UTF-8");
where custromHtml is the HTML line that is used to be displayed.
on the place of "custromHtml" you just pass "file://android_asset/myfile/file.html".
I think this should work.
You may try for this too -
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String myURL = "file:///android_asset/index.html";
myBrowser=(WebView)findViewById(R.id.mybrowser);
/*By default Javascript is turned off,
* it can be enabled by this line.
*/
myBrowser.getSettings().setJavaScriptEnabled(true);
myBrowser.setWebViewClient(new WebViewClient());
myBrowser.loadUrl(myURL);
}
and also check you have placed the file in correct folder of main project. If all this is ok, make a clean project and fix project. Then try to run it.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String myURL = "file:///android_asset/index.html";
myBrowser=(WebView)findViewById(R.id.mybrowser);
myBrowser.getSettings().setJavaScriptEnabled(true);
myBrowser.setWebViewClient(new WebViewClient());
myBrowser.loadUrl(myURL);
}
This would work well try it-----
"android.resource://[package]/[res type]/[res name]"
Uri path = Uri.parse("android.resource://com.androidbook.samplevideo/raw/myvideo");
This link is also useful -
http://developer.android.com/reference/android/webkit/WebView.html
Loading an Android Resource into a WebView
shouldOverrideUrlLoading does not work on ICS for file://, but works for fine for external urls. loadURL works fine loading from the assets folder.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
WebView web=(WebView)findViewById(R.id.webView1);
web.setWebViewClient(new MyWebClient());
//web.loadUrl("file:///android_asset/index.html");
web.loadUrl("http://google.com");
.....
class MyWebClient extends WebViewClient
{
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Log.d("MyWebClient", "url is: " + url);
if (url.equalsIgnoreCase("google.com")){
Log.d("MyWebClient","url is: " + url);
}
return false;
}
}
I found this forum solution which solved the problem for me: http://www.cynosurex.com/Forums/DisplayComments.php?file=Java/Android/Android_4_has_a_.file....android_asset.webkit.._bug
I think you should try this ....
webview.setWebChromeClient(new WebChromeClient());
webview.setWebViewClient(new WebViewClient());
webview.loadUrl("file://android_asset/myfile/file.html");
webview.setVerticalScrollBarEnabled(false);
webview.setWebViewClient(new WebViewClient()
{
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.equalsIgnoreCase("some text")){
setDialog("some fancy text");
}
I created an Activity that has a title and a web view in a LinearLayout. In the onResume() method it calls webView.loadUrl(url). The problem is that the activity first shows the title with the rest of the screen blank, then the device browser is launched with the page for the URL. What I want to see is the page being shown in the WebView below the title. What could be the problem?
Edit:
Ok, did some further search and found this one:
Clicking URLs opens default browser
It points to the WebView tutorial here.
Just implement the web client and set it.
Answering my question based on the suggestions from Maudicus and Hit.
Check the WebView tutorial here.
Just implement the web client and set it before loadUrl. The simplest way is:
myWebView.setWebViewClient(new WebViewClient());
For more advanced processing for the web content, consider the ChromeClient.
Use this:
lWebView.setWebViewClient(new WebViewClient());
use like this:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dedline);
WebView myWebView = (WebView) findViewById(R.id.webView1);
myWebView.setWebViewClient(new WebViewClient());
myWebView.loadUrl("https://google.com");
}
Make your Activity like this.
public class MainActivity extends Activity {
WebView browser;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// find the WebView by name in the main.xml of step 2
browser=(WebView)findViewById(R.id.wvwMain);
// Enable javascript
browser.getSettings().setJavaScriptEnabled(true);
// Set WebView client
browser.setWebChromeClient(new WebChromeClient());
browser.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});
// Load the webpage
browser.loadUrl("http://google.com/");
}
}
I was facing the same problem and I found the solution
Android's official Documentation about WebView
Here is my onCreateView() method and here i used two methods to open the urls
Method 1 is opening url in Browser and
Method 2 is opening url in your desired WebView.
And I am using Method 2 for my Application and this is my code:
public class MainActivity extends Activity {
private WebView myWebView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_webpage_detail, container, false);
// Show the dummy content as text in a TextView.
if (mItem != null) {
/* Method : 1
This following line is working fine BUT when we click the menu item then it opens the URL in BROWSER not in WebView */
//((WebView) rootView.findViewById(R.id.detail_area)).loadUrl(mItem.url);
// Method : 2
myWebView = (WebView) rootView.findViewById(R.id.detail_area); // get your WebView form your xml file
myWebView.setWebViewClient(new WebViewClient()); // set the WebViewClient
myWebView.loadUrl(mItem.url); // Load your desired url
}
return rootView;
} }
Try this code...
private void startWebView(String url) {
//Create new webview Client to show progress dialog
//When opening a url or click on link
webView.setWebViewClient(new WebViewClient() {
ProgressDialog progressDialog;
//If you will not use this method url links are opeen in new brower not in webview
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
//Show loader on url load
public void onLoadResource (final WebView view, String url) {
if (progressDialog == null) {
// in standard case YourActivity.this
progressDialog = new ProgressDialog(view.getContext());
progressDialog.setMessage("Loading...");
progressDialog.show();
}
}
public void onPageFinished(WebView view, String url) {
try{
if (progressDialog.isShowing()) {
progressDialog.dismiss();
progressDialog = null;
}
}catch(Exception exception){
exception.printStackTrace();
}
}
});
// Javascript inabled on webview
webView.getSettings().setJavaScriptEnabled(true);
// Other webview options
/*
webView.getSettings().setLoadWithOverviewMode(true);
webView.getSettings().setUseWideViewPort(true);
webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
webView.setScrollbarFadingEnabled(false);
webView.getSettings().setBuiltInZoomControls(true);
*/
/*
String summary = "<html><body>You scored <b>192</b> points.</body></html>";
webview.loadData(summary, "text/html", null);
*/
//Load url in webview
webView.loadUrl(url);
}
If you see an empty page, enable JavaScript.
webView.setWebViewClient(new WebViewClient());
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setDomStorageEnabled(true);
webView.loadUrl(url);
Simply Answer you can use like this
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
WebView webView = new WebView(this);
setContentView(webView);
webView.setWebViewClient(new WebViewClient());
webView.loadUrl("http://www.google.com");
}
}
If you're using webChromeClient I'll suggest you to use webChromeClient and webViewClient together. because webChromeClient does not provides shouldOverrideUrlLoading. It is okay to use both.
webview.webViewClient = WebViewClient()
webview.webChromeClient = Callback()
private inner class Callback : WebChromeClient() {
override fun onProgressChanged(view: WebView?, newProgress: Int) {
super.onProgressChanged(view, newProgress)
if (newProgress == 0) {
progressBar.visibility = View.VISIBLE
} else if (newProgress == 100) {
progressBar.visibility = View.GONE
}
}
}
I just found out that it depends on the formatting of the URL:
https://example.com/example gets opened in the browser
https://example.com/example/ (with / at the end) gets opened in the webView
My code just uses
webview.loadUrl(url)
no need to set
webView.setWebViewClient(new WebViewClient())
at least in my case.
Maybe that's useful for some of you.
My problem ended up being that I needed to do a clearHistory before I could switch between sites without opening an external browser.
#Override
public void onPageFinished(WebView view, String url) {
webView_.clearHistory();
super.onPageFinished(webView_, url);
}