Webview with cache inside fragment

Webview with cache inside fragment - android

so i'm trying to do 3 fragments with differents webview each. But i cant manage to put them to work.
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class Page2Fragment extends Fragment {
public Page2Fragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_page2, container, false);
}
}
And for the webview+cache i have this code
public class MainActivity extends AppCompatActivity {
private Context mContext;
private Activity mActivity;
private RelativeLayout mRelativeLayout;
private WebView mWebView;
private String mUrl="https://www.google.pt";
#Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_ACTION_BAR);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContext = getApplicationContext();
mActivity = MainActivity.this;
mRelativeLayout = (RelativeLayout) findViewById(R.id.rl);
mWebView = (WebView) findViewById(R.id.web_view);
renderWebPage(mUrl);
}
protected void renderWebPage(String urlToRender) {
mWebView.setWebViewClient(new WebViewClient() {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// Do something on page loading started
}
#Override
public void onPageFinished(WebView view, String url) {
// Do something when page loading finished
});
mWebView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int newProgress) {
}
});
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setAppCacheEnabled(true);
mWebView.getSettings().setAppCachePath(mContext.getCacheDir().getPath());
mWebView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);
mWebView.loadUrl(urlToRender);
}
}`
I can put the code to work alone, in another app, but not with fragments.
With a simple webview it's ok too,but i really want to "cache" the website or display an error message saying that the internet is not on.

Related

How use webview history back in a fragment?

I thought it was a very easy problem... but I haven't solved for quite some time.
For now, pressing back button will turn off the app. I want to go back by pressing the back button.
Fragment containing the webview.
HomeFragment.java
public class HomeFragment extends Fragment {
WebView webView;
public HomeFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_home, container, false);
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
webView = view.findViewById(R.id.home_webview);
String url = "https://galaxyhub.kr/starcitizen";
webView.loadUrl(url);
webView.getSettings().setJavaScriptEnabled(true);
final ProgressDialog dialog = ProgressDialog.show(getActivity(),"", "Loading", true);
webView.setWebViewClient(new WebViewClient(){
#Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
Toast.makeText(getActivity(), "URL ERROR", Toast.LENGTH_SHORT).show();
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
dialog.show();
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
dialog.dismiss();
}
});
}
}
I heard that I should also write in the MainActivity.
I'll post it right away if needed.
package com.example.starcitizen.fragment;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebResourceError;
import android.webkit.WebResourceRequest;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
import androidx.activity.OnBackPressedCallback;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import com.example.starcitizen.R;
/**
* A simple {#link Fragment} subclass.
*/
public class HomeFragment extends Fragment {
WebView webView;
OnBackPressedCallback callback = new OnBackPressedCallback(true) {
#Override
public void handleOnBackPressed() {
if (webView.canGoBack()) {
webView.goBack();
} else {
//use this if you need to call the Activity
//backpress for default back action
requireActivity().onBackPressed();
}
}
};
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requireActivity().getOnBackPressedDispatcher().addCallback(this, callback);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_home, container, false);
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
webView = view.findViewById(R.id.home_webview);
String url = "https://galaxyhub.kr/starcitizen";
webView.loadUrl(url);
webView.getSettings().setJavaScriptEnabled(true);
final ProgressDialog dialog = ProgressDialog.show(getActivity(),"", "Loading",
true);
webView.setWebViewClient(new WebViewClient(){
#Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
Toast.makeText(getActivity(), "URL ERROR", Toast.LENGTH_SHORT).show();
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
dialog.show();
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
dialog.dismiss();
}
});
}
}
Now this code is running!

Add the fragment to the back stack if you need to navigate back from your fragment when the WebView can't go back more.
getSupportFragmentManager().beginTransaction()
.replace(R.id.fragment_container, fragment)
.addToBackStack(null)
.commit();
Then in your fragment:
public class HomeFragment extends Fragment {
private WebView webView;
#Override
public void onAttach(#NonNull Context context) {
super.onAttach(context);
OnBackPressedCallback callback = new OnBackPressedCallback(true) {
#Override
public void handleOnBackPressed() {
if (webView.canGoBack()) {
webView.goBack();
} else {
//use this if you need to call the Activity
//backpress for default back action
requireActivity().onBackPressed();
}
}
};
requireActivity().getOnBackPressedDispatcher()
.addCallback(getViewLifecycleOwner(), callback);
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
webView = view.findViewById(R.id.home_webview);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebViewClient(new WebViewClient() {
//callbacks omitted...
});
String url = "https://galaxyhub.kr/starcitizen";
//call this after WebViewClient setup
webView.loadUrl(url);
}
}
Remember that Activity on onBackPressed will be called before the one added in the Fragment.
More info on back press handling here: https://developer.android.com/guide/navigation/navigation-custom-back#java
For this to work use at least:
androidx.fragment:fragment:1.1.0

webview android app not loading any image or navigate in the website link

I am trying to load the site in an android app web view.
The site loads without the images ,all the images from the site are not loaded and i can't add to the cart product or even open details of other product
The code for MainActivity.java is shown below.
import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ShareActionProvider;
public class MainActivity extends Activity {
private WebView mWebView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
mWebView = (WebView) findViewById(R.id.activity_main_webview);
mWebView.setWebChromeClient(new WebChromeClient());
mWebView.setWebViewClient(new WebViewClient());
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
mWebView.loadUrl("http://shopliek.com");
mWebView.setWebViewClient(new MyAppWebViewClient(){
#Override
public void onPageFinished(WebView view, String url) {
//hide loading image
findViewById(R.id.progressBar1).setVisibility(View.GONE);
//show webview
findViewById(R.id.activity_main_webview).setVisibility(View.VISIBLE);
}});
}
#Override
public void onBackPressed() {
if(mWebView.canGoBack()) {
mWebView.goBack();
} else {
super.onBackPressed();
}
}
private ShareActionProvider mShareActionProvider;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
/** Inflating the current activity's menu with res/menu/items.xml */
getMenuInflater().inflate(R.menu.menu_main, menu);
/** Getting the actionprovider associated with the menu item whose id is share */
mShareActionProvider = (ShareActionProvider) menu.findItem(R.id.share).getActionProvider();
/** Setting a share intent */
mShareActionProvider.setShareIntent(getDefaultShareIntent());
return super.onCreateOptionsMenu(menu);
}
/** Returns a share intent */
private Intent getDefaultShareIntent(){
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_SUBJECT, "Make your Life Easier");
intent.putExtra(Intent.EXTRA_TEXT," Visit google");
return intent;
}
}
and also this MyAppWebViewClient:
public class MyAppWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if(Uri.parse(url).getHost().endsWith("www.shopliek.com")) {
return false;
}
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
view.getContext().startActivity(intent);
return true;
}
}
I'm beginner so please explain kindly with simple instruction and thanks

Try this
mWebView = (WebView) findViewById(R.id.activity_main_webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl("http://www.google.com");
Hope this will work. Let me know if it works.

I've used the below code & everything worked correctly: show pictures, details page ... ...
public class WebviewActivity extends Activity {
#BindView(R.id.webview)
WebView web;
#BindView(R.id.progressBar)
ProgressBar progressBar;
#Override
public void onCreate(Bundle savedInstanceState) {
try {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_webview);
ButterKnife.bind(this);
web.setWebViewClient(new myWebClient());
web.getSettings().setJavaScriptEnabled(true);
web.loadUrl(WebserviceUrl.BASE_URL);
} catch (Exception e) {
e.printStackTrace();
}
}
public class myWebClient extends WebViewClient {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
progressBar.setVisibility(View.VISIBLE);
web.loadUrl(url);
return true;
}
public void onReceivedSslError(WebView view, final SslErrorHandler handler, SslError error) {
final AlertDialog.Builder builder = new AlertDialog.Builder(WebviewActivity.this);
builder.setMessage(R.string.notification_error_ssl_cert_invalid);
builder.setPositiveButton(R.string.continue_to_page, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
handler.proceed();
}
});
builder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
handler.cancel();
}
});
final AlertDialog dialog = builder.create();
dialog.show();
}
#Override
public void onPageFinished(WebView view, String url) {
// TODO Auto-generated method stub
super.onPageFinished(view, url);
progressBar.setVisibility(View.GONE);
}
}
}
try it & let me know the result

Creating Web View with Fragments

Im new to android and im trying to create a web View in with fragments
and i am getting an error in the Adapter class at the WebViewFragment getitem(),
Saying" THE RETURN TYPE IS INCOMPATIBLE WITH THE fragmentPagerAdapter" please help because im stuck
import homePage.HotDeals;
import homePage.NewArrivals;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.webkit.WebViewFragment;
public class HomePageAdapter extends FragmentPagerAdapter{
public HomePageAdapter(FragmentManager fm) {
super(fm);
// TODO Auto-generated constructor stub
}
#Override
public WebViewFragment getItem(int index) {
// TODO Auto-generated method stub
switch(index){
case 0:
return new NewArrivals();
case 1:
return new HotDeals();
}
return null;
}

Try this:
public class MainActivity extends Activity {
static public class MyWebViewFragment extends Fragment {
WebView myWebView;
final static String myBlogAddr = "http://android-er.blogspot.com";
String myUrl;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.layout_webfragment, container, false);
myWebView = (WebView)view.findViewById(R.id.mywebview);
myWebView.getSettings().setJavaScriptEnabled(true);
myWebView.setWebViewClient(new MyWebViewClient());
if(myUrl == null){
myUrl = myBlogAddr;
}
myWebView.loadUrl(myUrl);
return view;
}
private class MyWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
myUrl = url;
view.loadUrl(url);
return true;
}
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setRetainInstance(true);
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public void onBackPressed() {
MyWebViewFragment fragment =
(MyWebViewFragment)getFragmentManager().findFragmentById(R.id.myweb_fragment);
WebView webView = fragment.myWebView;
if(webView.canGoBack()){
webView.goBack();
}else{
super.onBackPressed();
}
}
}
For further reference :
http://android-er.blogspot.in/2013/04/embed-webview-in-fragment.html
You can also use WebViewFragment.
http://developer.android.com/reference/android/webkit/WebViewFragment.html

Android - Add progress bar WebView

I am creating a simple app Android webview, but also following the guides, I can not implement a progress bar to my code.
how can I implement a loading bar that will disappear after the page loads?
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
WebView view = (WebView) this.findViewById(R.id.webView);
view.getSettings().setJavaScriptEnabled(true);
view.setWebViewClient(new MyBrowser());
view.loadUrl("http://www.abcdefcsadfg.org");
}
private class MyBrowser extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
}

You can initialize a Progressbar in onCreate, like below and set its initial visibility to View.GONE.
progress = (ProgressBar) findViewById(R.id.progressBar);
progress.setVisibility(View.GONE);
And your MyBrowser should look like this
private class MyBrowser extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
progress.setVisibility(View.GONE);
super.onPageFinished(view, url);
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
progress.setVisibility(View.VISIBLE);
super.onPageStarted(view, url, favicon);
}
}
UPDATE:
Check this link

You should declare progress bar in xml file and refer to it in the main activity so that it appears in your application.
Set its progress in MyBrowser.
Refer this link, it will help you.
http://javatechig.com/android/progressbar-while-loading-webview

Web View Fragment html embeed video fullscreen suport

Hello everyone i got a question regarding how to enable full screen support in html embed videos on my webview i have hardware accelerated true on manifest and the video works ok but wen pressed to go fullscreen the video stops.
here is my code
import com.photoshop.video.tutorials.R;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;
public class WebViewFragment extends Fragment {
public final static String TAG = WebViewFragment.class.getSimpleName();
private WebView viewContentWebView;
private String url;
private boolean resetHistory = true;
#SuppressLint("SetJavaScriptEnabled")
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final View v = inflater.inflate(R.layout.webview, container, false);
final ProgressBar viewContentProgress = (ProgressBar) v.findViewById(R.id.progress);
viewContentWebView = (WebView) v.findViewById(R.id.webview);
viewContentWebView.getSettings().setJavaScriptEnabled(true);
viewContentWebView.setWebViewClient(new WebViewClient() {
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
viewContentWebView.loadUrl("file:///android_asset/myerrorpage.html");
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return super.shouldOverrideUrlLoading(view, url);
}
});
viewContentWebView.setWebChromeClient(new WebChromeClient() {
#Override
public void onProgressChanged(WebView view, int newProgress) {
viewContentProgress.setProgress(newProgress);
viewContentProgress.setVisibility(newProgress == 100 ? View.GONE : View.VISIBLE);
if (newProgress == 100 && resetHistory) {
viewContentWebView.clearHistory();
resetHistory = false;
}
}
});
return v;
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
reload();
}
#Override
public void onHiddenChanged(boolean hidden) {
super.onHiddenChanged(hidden);
if (hidden)
viewContentWebView.stopLoading();
else
reload();
}
public void setUrl(String url) {
this.url = url;
if (viewContentWebView != null)
viewContentWebView.stopLoading();
resetHistory = true;
}
public void reload() {
if (TextUtils.isEmpty(url))
return;
viewContentWebView.loadUrl(url);
}
public boolean onBackPressed() {
if (viewContentWebView.canGoBack()) {
viewContentWebView.goBack();
return true;
}
return false;
}
}
How can i achieve this
many thanks in advance and a little patience with me because i am very very VERY new to android

You should override the two following methods in your WebChromeClient:
public void onShowCustomView(View view, CustomViewCallback callback);
public void onHideCustomView();
This is an extract of the code I'm using:
private View mCustomView;
private class MyWebChromeClient extends WebChromeClient {
private int mOriginalOrientation;
private FullscreenHolder mFullscreenContainer;
private CustomViewCallback mCustomViewCollback;
#Override
public void onShowCustomView(View view, CustomViewCallback callback) {
if (mCustomView != null) {
callback.onCustomViewHidden();
return;
}
mOriginalOrientation = mActivity.getRequestedOrientation();
FrameLayout decor = (FrameLayout) mActivity.getWindow().getDecorView();
mFullscreenContainer = new FullscreenHolder(mActivity);
mFullscreenContainer.addView(view, ViewGroup.LayoutParams.MATCH_PARENT);
decor.addView(mFullscreenContainer, ViewGroup.LayoutParams.MATCH_PARENT);
mCustomView = view;
mCustomViewCollback = callback;
mActivity.setRequestedOrientation(mOriginalOrientation);
}
#Override
public void onHideCustomView() {
if (mCustomView == null) {
return;
}
FrameLayout decor = (FrameLayout) mActivity.getWindow().getDecorView();
decor.removeView(mFullscreenContainer);
mFullscreenContainer = null;
mCustomView = null;
mCustomViewCollback.onCustomViewHidden();
// show the content view.
mActivity.setRequestedOrientation(mOriginalOrientation);
}
static class FullscreenHolder extends FrameLayout {
public FullscreenHolder(Context ctx) {
super(ctx);
setBackgroundColor(ctx.getResources().getColor(android.R.color.black));
}
#Override
public boolean onTouchEvent(MotionEvent evt) {
return true;
}
}

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Webview with cache inside fragment - android

Related

How use webview history back in a fragment?

webview android app not loading any image or navigate in the website link

Creating Web View with Fragments

Android - Add progress bar WebView

Web View Fragment html embeed video fullscreen suport

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