At my navigationDrawer from menu , by clicking search it opens a specific webview in a fragment . Works fine, but when I press back on that webview - instead of getting the last visited webscreen it comes back to my main fragment. how can i solve this? I'm providing my fragment java file here. please mention any other codes to need (if needed) to solve my problem
public class GoogleFragment extends Fragment {
public WebView mWebView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(fragment_google, container, false);
mWebView = (WebView) v.findViewById(webview);
mWebView.loadUrl("https://google.com");
// Enable Javascript
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
//improve webview performance
mWebView.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH);
mWebView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
mWebView.getSettings().setAppCacheEnabled(true);
mWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
webSettings.setDomStorageEnabled(true);
webSettings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS);
webSettings.setUseWideViewPort(true);
webSettings.setSavePassword(true);
webSettings.setSaveFormData(true);
webSettings.setEnableSmoothTransition(true);
// Force links and redirects to open in the WebView instead of in a browser
mWebView.setWebViewClient(new WebViewClient());
return v;
}
}
I think when you press back button from fragment than we need to handle it inside of Activity,
You need to first Override onBackPressed() method in your main activity which having fragment and global assign Webview with public in your google fragment
NOTE : when you are adding or replacing fragment keep adding a TAG, it can be helpful for getting instance of fragment.
#Override
public void onBackPressed() {
Fragment fragment =
getFragmentManager().findFragmentByTag("google_fragment");
if (fragment instanceof GoogleFragment) {
if (webView.canGoBack()) {
webView.goBack();
} else {
super.onBackPressed();
}
}else{
super.onBackPressed();
}
}
public class GoogleFragment extends Fragment {
public WebView mWebView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(fragment_google, container, false);
mWebView = (WebView) v.findViewById(webview);
mWebView.loadUrl("https://google.com");
// Enable Javascript
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
//improve webview performance
mWebView.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH);
mWebView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
mWebView.getSettings().setAppCacheEnabled(true);
mWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
webSettings.setDomStorageEnabled(true);
webSettings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS);
webSettings.setUseWideViewPort(true);
webSettings.setSavePassword(true);
webSettings.setSaveFormData(true);
webSettings.setEnableSmoothTransition(true);
// Force links and redirects to open in the WebView instead of in a browser
mWebView.setWebViewClient(new WebViewClient());
v.setFocusableInTouchMode(true);
v.requestFocus();
v.setOnKeyListener( new View.OnKeyListener()
{
#Override
public boolean onKey( View v1, int keyCode, KeyEvent event )
{
if( keyCode == KeyEvent.KEYCODE_BACK ) {
if(mWebView.canGoBack())
{
wView.goBack();
wView.getUrl();
}
return true;
}
return false;
}
} );
return v1;
}
}
Please try this code .it may help you.
Related
I am using fragment with WebView. Webview opens up correctly. My intention is as follows: Visitor clicks on any of the links within WebView inside the Fragment. Clicked link opens up in new WebView within new Activity. Tricky part - all links are from the same web site, there are no external links. Tricky for me, at least. Many thanks for your help in advance! :)
Here is my WebView code from Fragment:
public class HomeFragment extends Fragment {
#SuppressLint("SetJavaScriptEnabled")
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_naslovna, container, false);
WebView webView = view.findViewById(R.id.webView1);
webView.setWebViewClient(new WebViewClient());
webView.loadUrl("https://mywebpage.com/");
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
return view;
}
}
Please try this:
WebViewClient webClient = new WebViewClient(){
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url){
if( url.equals("http://test.com") ){
// do whatever you want e.g. open up activity with web view and pass the url
}
return true;
}
}
It took 6 more hours u puzzle work, but this is how it got fixed at the end.
public class HomeFragment extends Fragment {
WebView webView;
SwipeRefreshLayout swipeToRefreshLayout;
#SuppressLint("SetJavaScriptEnabled")
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_naslovna, container, false);
webView = view.findViewById(R.id.webView1);
final String pageUrl = "https://mywebpage.com/";
swipeToRefreshLayout = (SwipeRefreshLayout)view.findViewById(R.id.swiperefresh);
swipeToRefreshLayout.setOnRefreshListener(new RtvTkSwipeToRefreshListener(webView, swipeToRefreshLayout));
webView.setWebViewClient(new WebViewClient(){
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url != pageUrl) {
startNewActivity(url);
}
return true;
}
});
webView.loadUrl(pageUrl);
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
return view;
}
private void startNewActivity(String url) {
Intent myIntent = new Intent(getActivity(), NewActivity.class);
myIntent.putExtra("url", url);
getActivity().startActivity(myIntent);
}
}
When I tried to load a website using webview, the page does load. However, the page doesn't load everything. I got php part and a Youtube vídeo but It didn't appear. This is my code:
public class ChatFragment extends Fragment {
public ChatFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_chat, container, false);
String url = "mywebpath/index.php"; // It has the http part
WebView webView = (WebView) view.findViewById(R.id.chat);
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl(url);
webView.setWebViewClient(new WebViewClient());
webView.setWebChromeClient(new WebChromeClient());
webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
webView.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH);
webView.getSettings().setAllowFileAccess(true);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webView.getSettings().setPluginState(WebSettings.PluginState.ON);
webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
if (Build.VERSION.SDK_INT >= 19) {
webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
}
else {
webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}
webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
WebSettings webSettings = webView.getSettings();
webView.getSettings().setLoadWithOverviewMode(true);
webView.getSettings().setUseWideViewPort(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setPluginState(WebSettings.PluginState.ON);
return view;
}
This is the website: http://i.imgur.com/Tk8UIvL.jpg
And this is the webview result: http://i.imgur.com/reDPlx1.png
Thank so much for your attention
P.S. The chat starts with php part and then appear a div.
Oh ! You must create your website for version mobile
EG:
vsersion Browser: for Browser
version Mobile: for mobile
Try it!!!
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_chat, container, false);
String url = "mywebpath/index.php"; // It has the http part
WebView mWebView = (WebView) view.findViewById(R.id.chat);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().getPluginState();
if (Build.VERSION.SDK_INT < 8) {
mWebView.getSettings().setPluginsEnabled(true);
} else {
mWebView.getSettings().setPluginState(PluginState.ON);
}
mWebView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
mWebView.loadUrl(url);
return view;
}
in AndroidMainfest
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
if it does not work. Try this. (replace mWebview.loadUrl)
mWebview.loadData(url, "text/html", "utf-8");
Or
mWebview.loadDataWithBaseURL("", url, "text/html", "UTF-8", "");
I created a WebView using Fragment; here is my code:
public class MyWebView extends Fragment {
private WebView webView;
#SuppressLint("SetJavaScriptEnabled")
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Bundle args = getArguments();
String url = args.getString("url");
webView = (WebView) getView().findViewById(R.id.webView);
webView.setWebViewClient(new MyBrowser());
WebSettings webSettings = webView.getSettings();
webSettings.setSaveFormData(true);
webSettings.setUseWideViewPort(true);
webSettings.setLoadWithOverviewMode(true);
webSettings.setSupportZoom(true);
webSettings.setBuiltInZoomControls(true);
webSettings.setLoadsImagesAutomatically(true);
webSettings.setJavaScriptEnabled(true);
webView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
webView.loadUrl(url);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.web_view, container, false);
view.setOnKeyListener(new OnKeyListener() {
#Override
public boolean onKey( View v, int keyCode, KeyEvent event ) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (webView.canGoBack()) {
webView.goBack();
return true;
}
}
return false;
}
});
return view;
}
private class MyBrowser extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
}
I tried to override onBackPressed() but it seems not to work with Fragment. So I used setOnKeyListener() but it doesn’t work.
Can you tell me why the back button closes the app instead of going back to the previous web page?
The Fragment doesn't receive a callback of the OnBackPressed event. You'll have to make your Activity state aware when your fragment is displayed and communicate back and forth between the activity and the fragment.
You could make your code you're calling in on key a public boolean function for instance and if the fragment is present you interact with it, you continue to return true or false in a similar way which allows you to know on the activity if you should continue with it naturally if there are no more pages to go back.
Very good at all.
I have a fragment is called a drawerlist. Within this fragment I have a webView showing a web page.
I can surf the web, but the problem comes when I want to return to the previous page, and pulse on the back button.
The result I get is that pressing the back button, the application closes. And what I want is to return to the previous page.
Code fragment is as follows:
public class BClasesWebViewFragment extends Fragment {
private WebView webView;
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
WebSettings webSettings = this.webView.getSettings ();
webSettings . setJavaScriptEnabled ( true );
webSettings . setDomStorageEnabled ( true );
this . webView . setWebViewClient ( new WebViewClient ());
this . webView . setWebChromeClient ( new WebChromeClient ());
webSettings . setLoadWithOverviewMode ( true );
webSettings . setUseWideViewPort ( true );
webView.setInitialScale(1);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setLoadWithOverviewMode(true);
webView.getSettings().setUseWideViewPort(true);
webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
webView.setScrollbarFadingEnabled(false);
webView.getSettings().setBuiltInZoomControls(true);
webView.loadUrl("http://google.com/");
webView.setDownloadListener(new DownloadListener() {
public void onDownloadStart(String url, String userAgent,
String contentDisposition, String mimetype,
long contentLength) {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
}
});
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_bclases_webview, container, false);
webView = (WebView)view.findViewById(R.id.webViewBClases);
return view;
}
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.actionbar_menu, menu);
super.onCreateOptionsMenu(menu,inflater);
}
}
Thank you very much everyone.
I learned a lot on this site
Try this
webView.setOnKeyListener(new OnKeyListener()
{
#Override
public boolean onKey(View v, int keyCode, KeyEvent event)
{
if(event.getAction() == KeyEvent.ACTION_DOWN)
{
WebView webView = (WebView) v;
switch(keyCode)
{
case KeyEvent.KEYCODE_BACK:
if(webView.canGoBack())
{
webView.goBack();
return true;
}
break;
}
}
return false;
}
});
this will work perfectly.
Using Navigation Drawer calling webpage inside webview. But when moving through the menu its reloading whole website and again and again. I just want to save the state of webpage from where user left not from start of the webpage.
Thanks for any Help.
code:-
public class Facebook extends Fragment {
// this Fragment will be called from MainActivity
public Facebook(){}
private WebView webView ;
private Bundle webViewBundle;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.facebook, container, false);
webView = (WebView) rootView.findViewById(R.id.facebook);
webView.setWebViewClient(new WebViewClient());
webView.getSettings().setLoadWithOverviewMode(true);
webView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setSupportZoom(true);
webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webView.getSettings().setAllowFileAccess(true);
webView.getSettings().setDomStorageEnabled(true);
webView.getSettings().setRenderPriority(RenderPriority.HIGH);
if (webViewBundle == null) {
try{
webView.loadUrl("http://www.facebook.com");
}catch (Exception e){
e.printStackTrace();}
} else {
webView.restoreState(webViewBundle);
}
return rootView;
}
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
public void onPause() {
super.onPause();
webViewBundle = new Bundle();
webView.saveState(webViewBundle);
}
}
Have you tried setting the Cache Mode to be LOAD_CACHE_ONLY after you loaded the website for the first time?
WebSettings webSettings = webView.getSettings();
webSettings.setCacheMode(LOAD_CACHE_ONLY);
Before getting frustrated or pulling your hair out add this next to viewpager.
ViewPager.setOffscreenPageLimit(3);// three is my number of fragments.