Webview does not show up at all

Webview does not show up at all - android

Here are my codes and I cannot see any webview on my application. I tried to create a button and I could see that. When I ran my app, there is only a white blank space in place of webview.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center|top"
android:orientation="vertical"
tools:context="com.example.user.calisma1.MainActivity">
<Button
android:layout_width="match_parent"
android:layout_height="50dp"
android:id="#+id/b"/>
<WebView
android:id="#+id/wv"
android:layout_width="match_parent"
android:layout_height="300dp"></WebView>
import java.util.Random;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
WebView wv2;
Button b;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
wv2 = findViewById(R.id.wv);
wv2.getSettings().setJavaScriptEnabled(true);
wv2.loadUrl("https://webmail.etu.edu.tr/");
b = findViewById(R.id.b);
}
}

Add internet permission in manifest, if not added:
<uses-permission android:name="android.permission.INTERNET"/>
Add below code before loadUrl() to set webview client:
webView.setWebViewClient(new WebViewClient() {
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl)
{
// Handle the error
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
view.loadUrl(url);
return true;
}
});

Your url(https://webmail.etu.edu.tr/) involves redirection with HTTPS(SSL) so, following lines should be added.
wv2.setWebViewClient(new WebViewClient() {
#Override
public void onReceivedSslError (WebView view, SslErrorHandler handler, SslError error) {
handler.proceed();
}
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl)
{
// Handle the error
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
view.loadUrl(url);
return true;
}
});
wv2.loadUrl("https://webmail.etu.edu.tr/");

Related

Webview is not functioning properly for particular Page

I am trying to implement webview in my app but i am facing two issues
-Progress bar(Loading is not showing)
-Webview is not working for this specific url(https://www.bastibazar.com/) for other url its working fine also this url(https://www.bastibazar.com/) works fine when i open this in chrome or other browser
Here is my MainActivity.java
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private 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 myWebClient());
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("https://www.bastibazar.com/");
getSupportActionBar().hide();
webView.setWebViewClient(new WebViewClient() {
public void onReceivedError(WebView webView, int errorCode, String description, String failingUrl) {
try {
webView.stopLoading();
} catch (Exception e) {
}
if (webView.canGoBack()) {
webView.goBack();
}
webView.loadUrl("about:blank");
AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create();
alertDialog.setTitle("No Internet Connection");
alertDialog.setMessage("Check your internet connection and try again.");
alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "Try Again", new
DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
startActivity(getIntent());
}
});
alertDialog.show();
super.onReceivedError(webView, errorCode, description, failingUrl);
}
});
}
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) {
view.loadUrl(url);
return true;
}
}
#Override
// This method is used to detect back button
public void onBackPressed() {
if (webView.canGoBack()) {
webView.goBack();
} else {
// Let the system handle the back button
super.onBackPressed();
}
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<WebView
android:id="#+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</RelativeLayout>
And in manifest.xml i have added
<uses-permission android:name="android.permission.INTERNET" />
Can anyone suggest me what changes shall i do so that both functionality for progress bar and webview shows in my app,Thanks in Advance!!

it wasn't working for me at first also
read this
Webview does not load a particular website
webView.getSettings().setDomStorageEnabled(true);

XML:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<ProgressBar
android:id="#+id/progressBar"
android:max="3"
android:progress="100"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerInParent="true" />
<WebView
android:id="#+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/progressBar"
android:layout_centerHorizontal="true" />
</RelativeLayout>
JAVA:
import android.graphics.Bitmap;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebView;
import android.widget.ProgressBar;
public class MainActivity extends AppCompatActivity {
WebView webview;
ProgressBar progressBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webview = findViewById(R.id.webView);
progressBar = findViewById(R.id.progressBar);
webview.setWebViewClient(new WebViewClient());
webview.loadUrl("https://www.google.com");
}
public class WebViewClient extends android.webkit.WebViewClient {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
progressBar.setVisibility(View.GONE);
}
}
}
androidManifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="app.com.sample">
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Try this maybe it will help you
Change URL by yourself
Thankew! Happy Coding!

Android WebView when refresh it always goes to home page

I was try to create a android webview with the refresh option.
Whenever I pull down for refresh it always goes to the home page.
I have try using the swiperefeshlayout. My code are as follows
activity_main.xml file
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/swipe"
android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="#+id/destiny"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.SwipeRefreshLayout>
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:id="#+id/progressBar" />
</RelativeLayout>
MainActivity.java file
package com.my.project;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;
public class MainActivity extends AppCompatActivity {
private WebView myWebView;
SwipeRefreshLayout swipe;
ProgressBar progressBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
swipe = (SwipeRefreshLayout)findViewById(R.id.swipe);
swipe.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
WebAction();
}
});
WebAction();
}
public void WebAction(){
myWebView = (WebView)findViewById(R.id.destiny);
progressBar = (ProgressBar)findViewById(R.id.progressBar);
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setAppCacheEnabled(true);
myWebView.loadUrl("http://myurl");
swipe.setRefreshing(true);
myWebView.setWebViewClient(new WebViewClient());
AppUpdateChecker appUpdateChecker=new AppUpdateChecker(this); //pass the activity in constructure
appUpdateChecker.checkForUpdate(false); //mannual check false here
myWebView.setWebViewClient(new WebViewClient(){
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.startsWith("tel:")) {
Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(url));
startActivity(intent);
return true;
}
return false;
}
public void onReceivedError(WebView view, int errorCode, String description, String fallingUrl) {
myWebView.loadUrl("file:///android_asset/error.html");
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon){
progressBar.setVisibility(View.VISIBLE);
setTitle("Loading.....");
super.onPageStarted(view, url, favicon);
}
#Override
public void onPageFinished(WebView view, String url){
progressBar.setVisibility(View.GONE);
setTitle(view.getTitle());
super.onPageFinished(view, url);
swipe.setRefreshing(false);
}
});
}
#Override
public void onBackPressed() {
if(myWebView.canGoBack()) {
myWebView.goBack();
} else {
super.onBackPressed();
}
}
}
With this code the refresh always goes to the home page
but I want to refresh the webview on the same page itself.

You are setting all variables and actions again onRefresh() you only need to load current url of WebView again. So you need to change your OnRefreshListener like below;
swipe.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
myWebView.loadUrl(myWebView.getUrl());
}
});

Adding progress bar to webview

I'm trying to open WebView on button click. I want to show the progress bar and set a default view in WebView. What changes should I make?
Also if web view can take progress bar's space?
Below is my code.
xml file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.dell.ca1.Birthdays">
<HorizontalScrollView
android:id="#+id/horizontalScrollView"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:background="#android:color/background_dark">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#android:color/background_dark"
android:orientation="horizontal">
<Button
android:id="#+id/archies"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="3dp"
android:text="Archies >>"
android:textSize="10sp" />
<Button
android:id="#+id/fern"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="3dp"
android:text="FernsNPetals >>"
android:textSize="10sp" />
<Button
android:id="#+id/meeta"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="3dp"
android:text="Gifts By Meeta >>"
android:textSize="10sp" />
</LinearLayout>
</HorizontalScrollView>
<ProgressBar
android:id="#+id/pb"
android:layout_width="match_parent"
android:layout_height="10dp"
android:layout_below="#id/horizontalScrollView" />
<WebView
android:id="#+id/webview_bday"
android:layout_width="match_parent"
android:layout_height="525dp"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/horizontalScrollView" />
</LinearLayout>
Also if I can retain the data even after the back is pressed and start from beginning URL only when the app restarts.eg when I click "archies" button, view a product and then click "fernNpetals", then I click "archies" button, then I want to view the product page instead of the main page.
java file
package com.example.dell.ca1;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.ProgressBar;
public class Birthdays extends AppCompatActivity {
Button btn_fnp,btn_archies,btn_meeta;
WebView webView;
ProgressBar progressBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_birthdays);
webView=(WebView)findViewById(R.id.webview_bday);
btn_archies=(Button)findViewById(R.id.archies);
btn_fnp=(Button)findViewById(R.id.fern);
// btn_igb=(Button)findViewById(R.id.igb);
btn_meeta=(Button)findViewById(R.id.meeta);
//progressBar=(ProgressBar)findViewById(R.id.pb);
OnClickButton();
webView.setWebViewClient(new MyBrowser());
webView.getSettings().setJavaScriptEnabled(true);
}
private class MyBrowser extends WebViewClient
{
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
void OnClickButton()
{
btn_archies.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
webView.loadUrl("https://www.archiesonline.com/");
}
});
btn_meeta.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
webView.loadUrl("https://www.giftsbymeeta.com/");
}
});
btn_fnp.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
webView.loadUrl("https://www.fnp.com/");
}
});
}
}
Thanks!

You can use separate class for webViewClient
For Example,
private class MyWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
progressLoading.setVisibility(View.VISIBLE);
view.loadUrl(url);
return true;
}
#Override
public void onLoadResource(WebView view, String url) {
}
#Override
public void onPageFinished(WebView view, String url) {
// TODO Auto-generated method stub
progressLoading.setVisibility(View.GONE);
super.onPageFinished(view, url);
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// TODO Auto-generated method stub
progressLoading.setVisibility(View.GONE);
super.onPageStarted(view, url, favicon);
}
#Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error){
//Your code to do
progressLoading.setVisibility(View.GONE);
Toast.makeText(getApplicationContext(), "Your Internet Connection May not be active Or " + error , Toast.LENGTH_LONG).show();
}
}
Then call to webview,
myWebView.setWebViewClient(new MyWebViewClient());
Please modify as you like!!
Happy java!!

Please Try like this...
btn_archies.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
wv1.setWebViewClient(new MyBrowser());
wv1.loadUrl(url);
}
});
private class MyBrowser extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
progressDialog_webview = new ProgressDialog(Ppt_viewclass.this, R.style.MyTheme);
progressDialog_webview.setMessage("Please wait ...");
progressDialog_webview.show();
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
if (progressDialog_webview != null) {
progressDialog_webview.dismiss();
}
}
}
I hope this will help you.....,All the best

I can't load a specific URL using WebView

I can't load this specific url (http://sia.bogota.unal.edu.co/academia/) using WebView, but I can load other URLs. (See images below)
This is my code
Activity Class:
package co.luisfer.webview;
import android.app.Activity;
import android.app.ProgressDialog;
import android.net.http.SslError;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.webkit.SslErrorHandler;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MainActivity extends AppCompatActivity {
Activity activity;
private ProgressDialog progDailog;
private WebView webView;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
activity = this;
progDailog = ProgressDialog.show(activity, "Loading", "Please wait...", true);
progDailog.setCancelable(false);
webView = (WebView) findViewById(R.id.webview);
webView.setWebViewClient(new MyWebViewClient());
WebSettings settings = webView.getSettings();
settings.setBuiltInZoomControls(false);
settings.setSupportZoom(false);
settings.setJavaScriptCanOpenWindowsAutomatically(true);
settings.setAllowFileAccess(true);
settings.setDomStorageEnabled(true);
webView.loadUrl("http://sia.bogota.unal.edu.co/academia");
}
private class MyWebViewClient extends WebViewClient {
#Override
public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
handler.proceed();
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
progDailog.show();
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, final String url) {
progDailog.dismiss();
}
}
}
XML file:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin" tools:context=".MainActivity">
<WebView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/webview"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true" />
</RelativeLayout>
I don't have any clue what's going on.
Can you help me?
Thanks in advance
PS: I have already set up the internet permission:
<uses-permission android:name="android.permission.INTERNET" />

How to load external webpage in WebView

My problem is that the webpage is not loaded inside the WebView.
mWebview.loadUrl("http://www.google.com"); launches the web browser...
This is the code of my activity:
import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;
public class Main extends Activity {
private WebView mWebview;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mWebview = new WebView(this);
mWebview.loadUrl("http://www.google.com");
setContentView(mWebview);
}
}
I added the required permission in the Manifest:
<uses-permission android:name="android.permission.INTERNET" />

Thanks to this post, I finally found the solution. Here is the code:
import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebResourceError;
import android.webkit.WebResourceRequest;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
import android.annotation.TargetApi;
public class Main extends Activity {
private WebView mWebview ;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mWebview = new WebView(this);
mWebview.getSettings().setJavaScriptEnabled(true); // enable javascript
final Activity activity = this;
mWebview.setWebViewClient(new WebViewClient() {
#SuppressWarnings("deprecation")
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Toast.makeText(activity, description, Toast.LENGTH_SHORT).show();
}
#TargetApi(android.os.Build.VERSION_CODES.M)
#Override
public void onReceivedError(WebView view, WebResourceRequest req, WebResourceError rerr) {
// Redirect to deprecated method, so you can use it in all SDK versions
onReceivedError(view, rerr.getErrorCode(), rerr.getDescription().toString(), req.getUrl().toString());
}
});
mWebview .loadUrl("http://www.google.com");
setContentView(mWebview );
}
}

try this
webviewlayout.xml:
<?xml version="1.0" encoding="utf-8"?>
<WebView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/help_webview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scrollbars="none"
/>
In your Activity:
WebView webView;
setContentView(R.layout.webviewlayout);
webView = (WebView)findViewById(R.id.help_webview);
webView.getSettings().setJavaScriptEnabled(true);
webview.loadUrl("http://www.google.com");
Update
Add webView.setWebViewClient(new WebViewController()); to your Activity.
WebViewController class:
public class WebViewController extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}

public class WebViewController extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
webView.setWebViewClient(new WebViewController());

Please use this code:-
Main.Xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="#drawable/background">
<RelativeLayout android:layout_width="fill_parent"
android:layout_height="wrap_content" android:background="#drawable/top_heading"
android:id="#+id/rlayout1">
<TextView android:layout_width="wrap_content"
android:layout_centerVertical="true" android:layout_centerHorizontal="true"
android:textColor="#ffffff" android:textSize="22dip"
android:textStyle="bold" android:layout_height="wrap_content"
android:text="More Information" android:id="#+id/txtviewfbdisplaytitle" />
</RelativeLayout>
<RelativeLayout android:layout_width="fill_parent"
android:layout_height="fill_parent" android:layout_below="#+id/rlayout1"
android:id="#+id/rlayout2">
<WebView android:id="#+id/webview1" android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.0" />
</RelativeLayout>
</RelativeLayout>
MainActivity.Java
public class MainActivity extends Activity {
private class MyWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
Button btnBack;
WebView webview;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
webview=(WebView)findViewById(R.id.webview1);
webview.setWebViewClient(new MyWebViewClient());
openURL();
}
/** Opens the URL in a browser */
private void openURL() {
webview.loadUrl("http://www.google.com");
webview.requestFocus();
}
}
Try this code if any query ask me.

It's very simple try integrate these lines of code
first take permission in the Android Manifest file
<uses-permission android:name="android.permission.INTERNET" />
then write some code in you Activity.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.MainActivity">
<WebView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/help_webview"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
Then write these code in your MainActivity.java
import android.app.Activity;
import android.content.Intent;
import android.content.res.Resources;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.Window;
import android.webkit.WebResourceRequest;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class MainActivity extends Activity{
private WebView mWebview ;
String link = "";// global variable
Resources res;// global variable
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_modernherbal_main);
mWebview = (WebView) findViewById(R.id.help_webview);
WebSettings webSettings = mWebview.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setUseWideViewPort(true);
webSettings.setLoadWithOverviewMode(true);
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://www.example.com");
}
}
Try this it'll help you to solve your problem

just go into XML file and give id to your webView then in java paste these line:
public class Main extends Activity {
private WebView mWebview;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.Your_layout_file_name);
mWebview = (WebView)findViewById(R.id.id_you_gave _to_your_wenview_in_xml);
mWebview.loadUrl("http://www.google.com");
}
}

I used this code that was cool. but have an error. " neterr_cleartext_not_permitted"
show when you use this code then you will face this problem..
I got a solution of this.you have to add this in your AndroidManifest.xml near about Application
android:usesCleartextTraffic="true"
<uses-permission android:name="android.permission.INTERNET" /> // ignore if you already added. outside of Application.

You can do like this.
webView = (WebView) findViewById(R.id.webView1);
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("Your URL goes here");

try this;
webView.loadData("<iframe src='http://www.google.com' style='border: 0; width: 100%; height: 100%'></iframe>", "text/html; charset=utf-8", "UTF-8");

Add Internet permission in AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET" />
In your Layout:
<?xml version="1.0" encoding="utf-8"?>
<WebView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/webView"
/>
In your Activity
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try {
progressDialog = new ProgressDialog(this);
url_Api = "https://learn.microsoft.com/en-us/learn";
webView = this.findViewById(R.id.webView);
progressDialog.setMessage(getString(R.string.connection_Wait));
progressDialog.setIndeterminate(false);
progressDialog.setCancelable(true);
progressDialog.show();
LoadUrlWebView( url_Api );
}catch (Exception e){
Log.w(TAG, "onCreate", e);
}
}
private void LoadUrlWebView( String url_api ) {
try {
webView.setWebViewClient(new WebViewClient());
webView.setWebChromeClient(new MyWebChromeClient( url_api ));
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setSupportZoom(true);
webView.getSettings().setAllowContentAccess(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setDisplayZoomControls(false);
webView.loadUrl(url_api);
} catch (Exception e) {
Log.w(TAG, "setUpNavigationView", e);
}
}
private class MyWebChromeClient extends WebChromeClient {
private String urlAccount;
public MyWebChromeClient( String urlAccount ) {
this.urlAccount = urlAccount;
}
#Override
public void onProgressChanged(WebView view, int newProgress) {
try {
//Tools.LogCat(context, "INSIDE MyWebChromeClient | onProgressChanged / newProgress1:" + newProgress);
progressDialog.setMessage(newProgress + "% " + getString(R.string.connection_Wait));
if (newProgress < 100 && !progressDialog.isShowing()) {
if (progressDialog != null)
progressDialog.show();
}
if (newProgress == 100) {
if (progressDialog != null)
progressDialog.dismiss();
}
}catch (Exception e){
Log.w( "onProgressChanged", e);
}
}
#Override
public void onReceivedTitle(WebView view, String title) {
super.onReceivedTitle(view, title);
sharedPreferences = new Shared_Preferences( context );
sharedPreferences.setPageWebView(view.getUrl());
}
}

Add WebView Client
mWebView.setWebViewClient(new WebViewClient());

You need to add WebView client
mWebView.setWebViewClient(new WebViewClient() {
public void onPageFinished(WebView view, String url) {
// do your stuff here
}
});
also you can use onPageFinished to do task after webview done loading web page

activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<WebView
android:id="#+id/webView"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java:
package com.example.myapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MainActivity extends AppCompatActivity {
private class MyWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
WebView webView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = findViewById(R.id.webView);
webView .loadUrl("http://www.google.com");
webView.setWebViewClient(new MyWebViewClient());
}
}
AndroidManifest.xml: (add uses-permission and android:usesCleartextTraffic)
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myapplication">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:usesCleartextTraffic="true"
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.MyApplication">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Simple Webview activity in kotlin :
class WebViewActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
intent.getStringExtra(URL_EXTRA)?.let { url ->
WebView(this).apply {
settings.javaScriptEnabled = true // check if your need this
settings.domStorageEnabled = true
settings.setSupportZoom(true)
settings.builtInZoomControls = true
settings.displayZoomControls = false
loadUrl(url)
setContentView(this)
}
}
}
companion object {
const val URL_EXTRA = "url"
}
}

Add below method in your activity class.Here browser is nothing but your webview object.
Now you can view web contain page wise easily.
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && browser.canGoBack()) {
browser.goBack();
return true;
}
return false;
}

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 does not show up at all - android

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