I have a registration page in web view which I am using in an Android application, after successful registration it should redirect intent which is not webview. Is it possible to do so? And if possible are there any suggestions for doing this?
My project is in Eclipse.
Show the alert in webview and get this done as below as there is a callback (onJsAlert) when any alert is shown.
private void loadWebViewStuff() {
myWebView.setWebChromeClient(new MyWebChromeClient());
myWebView.loadUrl(URL);
}
final class MyWebChromeClient extends WebChromeClient {
#Override
public boolean onJsAlert(WebView view, String url, String message, JsResult result) {
//"message" is what is shown in the alert, here we can do whatever with it
}
}
Related
I'm making an Android App with Java in Android Studio for my website using webview, but i've a lot of links which go out of website. How can i detect if link redirect from www.mywebsite.com to www.anotherwebsite.com and open it in another page intent?
You can use the code below.
WebView myWebView = (WebView) findViewById(R.id.webview);
myWebView.setWebViewClient(new MyWebViewClient());
and create and inner class
private class MyWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return false;
}
}
You can find complete documentation here
I developed a simple webview app. I added a button which should act as the back button, so users can navigate back one page.
The button is initially hidden and should only show if a back history exists.
How can I realise this?
The code is simple:
backButton = findViewById(R.id.backButton);
backButton.setEnabled(blizzView.canGoBack());
but where do I have to call this? How is the "some site loaded" event called?
Update:
I tried to apply #Murats answer, but nothing happens:
private WebView blizzView; // my webview
private Button backButton;
public void onPageFinished(WebView view, String url)
{
backButton = findViewById(R.id.backButton);
backButton.setEnabled(blizzView.canGoBack());
if (blizzView.canGoBack()) {
backButton.setVisibility(View.VISIBLE);
} else {
backButton.setVisibility(View.INVISIBLE);
}
}
You can use WebView#canGoBack to find out if there is a backstack. You can check for that after the page is loaded e.g. in WebViewClient#onPageFinished
It works like this:
blizzView.setWebViewClient(new WebViewClient() { //
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
backButton = findViewById(R.id.backButton);
backButton.setEnabled(blizzView.canGoBack());
if (blizzView.canGoBack()) {
backButton.setVisibility(View.VISIBLE);
} else {
backButton.setVisibility(View.INVISIBLE);
}
}
});
I have a simple webview that loads a website. Once the website is loaded, I have the following to focus/scroll to the login box:
mWebview.setWebViewClient(new WebViewClient(){
#Override
public void onPageFinished(WebView view, String url) {
// TODO Auto-generated method stub
super.onPageFinished(view, url);
mWebview.scrollTo(681, 100);
(I've heard that onPageFinished is deprecated, but it's working for me in 2.2>4.4, so I'm just leaving it for now.
Anyway, I would like some sort of way to monitor for when the user actually logs in, that way when the page is done loading for the second time, I can then call some js and forward them to another page, but I have no idea how to do that. :(
I can just do another onPageFinished after they log in, but I don't know how to start monitoring... In other words, I can't start another onPageFinished immediately after the current, because it just redirects automatically.
Does anyone have any suggestions? I would greatly appreciate it! :)
EDIT:
Here's the entirety (minus the import headers) of my MainActivity.java class.
public class MainActivity extends Activity {
private WebView mWebview ;
#Override
public void onBackPressed() {
if(mWebview.canGoBack() == true){
mWebview.goBack();
}else{
super.onBackPressed();
}
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mWebview = new WebView(this);
mWebview.getSettings().setJavaScriptEnabled(true); // enable javascript
mWebview.getSettings().setBuiltInZoomControls(true);
if(android.os.Build.VERSION.SDK_INT >= 11) {
mWebview.getSettings().setDisplayZoomControls(false);
}
final Activity activity = this;
mWebview.setWebViewClient(new WebViewClient() {
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Toast.makeText(activity, description, Toast.LENGTH_SHORT).show();
}
});
mWebview .loadUrl("http://example.com");
setContentView(mWebview );
mWebview.setWebViewClient(new WebViewClient(){
#Override
public void onPageFinished(WebView view, String url) {
// TODO Auto-generated method stub
super.onPageFinished(view, url);
mWebview.scrollTo(681, 100);
}
}
);
}
I think I might be missing a curly bracket, but ignore that for now, haha. So anyway, after mWebview.scrollTo (the last line), the webpage is done loading, and it just chills at the login page. After a user logs in, the page (obviously) starts to load and directs to another post-login URL. I'd like to check the URL with an if statement after the page is done loading for the second time.
Does that make more sense? Sorry, it's confusing me too, trying to explain it.
Usually there will be two separate URLs, one for the post log-in page and one for the pre log-in page. You can have an if statement that checks the URL to make sure you've logged in, and if you have, then it redirects/closes/whatever.
I had a similar issue here:
Closing a Webview in Android
So basically you just want to execute some JavaScript once you've logged in? I don't see why you can't have an if statement to check whether you're logged in or not, and if you're logged in, then execute the js.
Something like this maybe?
wv.setWebViewClient(new WebViewClient() {
#Override
public void onPageFinished(WebView view, String url) {
if (url.contains(getString(R.string.loginURL))){
super.onPageFinished(view, url);
mWebview.scrollTo(681, 100);
}else if(url.contains(getString(R.string.loggedInURL))) {
wv.loadUrl(js goes here);
}
}
}
This will execute every time a page is finished loading in your WebView
I'm trying to call JS functions from Android native code, but they don't seem to be working. I've tried many solutions but to no solution. Here is my code:
public class MainActivity extends Activity {
private WebView webView;
#SuppressLint("SetJavaScriptEnabled")
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = (WebView) findViewById(R.id.webView1);
webView.setWebViewClient(new MyCustomWebViewClient());
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webView.getSettings().setUseWideViewPort(true);
webView.getSettings().setLoadWithOverviewMode(true);
webView.loadUrl("http://google.com");
}
private class MyCustomWebViewClient extends WebViewClient {
#Override
public void onPageFinished(WebView view, String url) {
webView.loadUrl("javascript:alert('shadow');");
Toast.makeText(getApplicationContext(), "DONE", Toast.LENGTH_LONG).show();
}
}
}
Please help.
Thanks
You can't do alert() with Android's WebView. If you want to show alert dialogs, you need to handle it in your Activity code or use a WebChromeClient. Per the docs:
Creating and setting a WebChromeClient subclass. This class is called
when something that might impact a browser UI happens, for instance,
progress updates and JavaScript alerts are sent here (see Debugging
Tasks).
See: https://developer.android.com/reference/android/webkit/WebView.html
With a WebView you can still write a JavaScript function that sets the value of a textbox to some string. If you need specific code to help you with this, let me know. If you've gotten this far though, you probably can handle it on your own is my guess.
Edit 1
First create a method in JavaScript called sendValueToAndroid()
myWebView.loadUrl("javascript:sendValueToAndroid()");
In the JavaScript method, call an exposed method in your Android code.
function sendValueToAndroid()
{
val divValue = ...
Android.sendValueToAndroid(divValue);
}
Expose a method in the Android app in any object of your choosing.
#JavascriptInterface
public String sendValueToAndroid(String val)
{
//do something in your app
}
Basically, what you're doing is telling the WebView to invoke a JavaScript method which invokes a callback method in your own app.
What are the settings to enable or disable in WebView to do this?
If you want to use a webview with exactly the same features as the native android browser, you have to check MANY options and settings. A WebView is made to NOT use all of the browsers options and settings for better performance and for having more controll on what the users can and can not do while browsing. to figure out all the opportunities you should read through the api documentation here:
http://developer.android.com/reference/android/webkit/WebView.html
For some further dealing and handling with the WebView class also here are some usefull sample codelines:
http://pankajchunchun.wordpress.com/2013/01/09/example-of-webview-with-result-handler-and-connection-timeout-handler/
I hope this will help you.
this is the webview example source..
what kind of setting do you wanna know??
public class MainActivity extends Activity {
WebView webview;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webview = (WebView)findViewById(R.id.webview);
webview.setWebViewClient(new WebClient());
WebSettings set = webview.getSettings();
set.setJavaScriptEnabled(true);
set.setBuiltInZoomControls(true);
webview.loadUrl("http://www.google.com");
findViewById(R.id.btnStart).setOnClickListener(onclick);
}
OnClickListener onclick =new OnClickListener() {
#Override
public void onClick(View v) {
String url= null;
EditText add = (EditText)findViewById(R.id.add);
url = add.getText().toString();
webview.loadUrl(url);
}
};
class WebClient extends WebViewClient {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
In addition to #Ssam's answer, you might want to manage the back button press so your app/Activity doesn't get closed on back press.
#Override
public void onBackPressed() {
if (webview.canGoBack()) {
webview.goBack();
}else
super.onBackPressed();
}
where webview is your webview