Develop Reference

How to get the content from webview and display it in a Textview

In my app, I need to display the content of a webview to the user via textView so that they can make changes for further use.
Can this be possible by reading the screen of the phone and displaying in a textView?
Or is there any function in webview which only retrieves the text shown in the URL to the user?

Also take help from here: https://developer.android.com
http://developer.android.com/reference/android/webkit/WebView.html#addJavascriptInterface%28java.lang.Object,%20java.lang.String%29
Get text content from a webview
Here is the code
strong text
package test.android.webview;
import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.TextView;
public class WebviewTest2Activity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
WebView webView = (WebView) findViewById(R.id.webView);
TextView contentView = (TextView) findViewById(R.id.contentView);
/* An instance of this class will be registered as a JavaScript interface */
class MyJavaScriptInterface
{
private TextView contentView;
public MyJavaScriptInterface(TextView aContentView)
{
contentView = aContentView;
}
#SuppressWarnings("unused")
public void processContent(String aContent)
{
final String content = aContent;
contentView.post(new Runnable()
{
public void run()
{
contentView.setText(content);
}
});
}
}
webView.getSettings().setJavaScriptEnabled(true);
webView.addJavascriptInterface(new MyJavaScriptInterface(contentView), "INTERFACE");
webView.setWebViewClient(new WebViewClient() {
#Override
public void onPageFinished(WebView view, String url)
{
view.loadUrl("javascript:window.INTERFACE.processContent(document.getElementsByTagName('body')[0].innerText);");
}
});
webView.loadUrl("http://MIH.blogspot.com");
}
}
file.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<WebView
android:id="#+id/webView"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="0.5" />
<TextView
android:id="#+id/contentView"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="0.5" />
</LinearLayout>

Android Picasso Fragment Pic from URL

I've got problem to load pic from URL do my fragment by Picasso.
When I start app it's start without any errors but pic is not loading.
My app has one MainActivity and three fragments. Below I paste xml of mainlayout and one fragment class. The best for me is this scenario:
when user click button on fragment three(red on image), pic will load from url to imageView which is located on fragment two (yellow on image) above of fragment three.
Please help
package testowy.com.testowyfragment2;
import android.app.Activity;
import android.app.Fragment;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import com.squareup.picasso.Picasso;
/**
* Created by Administrator on 2015-07-04.
*/
public class Klasadown extends Fragment {
private klasadownlistener listener;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragmentdown, container, false);
ImageView img = (ImageView) view.findViewById(R.id.imgVV);
Context c = getActivity().getApplicationContext();
Picasso.with(c).load("http://inthecheesefactory.com/uploads/source/glidepicasso/cover.jpg")
.fit().into(img);
View.OnClickListener clickListener = new View.OnClickListener() {
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnMenu:
updateText("Menu");
SetImage();
break;
case R.id.btnKontakt:
updateText("Kontakt");
break;
default:
break;
}
}
};
Button btnMenu = (Button) view.findViewById(R.id.btnMenu);
Button btnKontakt = (Button) view.findViewById(R.id.btnKontakt);
btnKontakt.setOnClickListener(clickListener);
btnMenu.setOnClickListener(clickListener);
return view;
}
public interface klasadownlistener {
public void onItemSelected(String txt);
}
private void updateText(String txt) {
listener.onItemSelected(txt);
}
public void SetImage() {
ImageView img = (ImageView) getView().findViewById(R.id.imgVV);
Picasso.with(getActivity().getApplicationContext()).load("http://inthecheesefactory.com/uploads/source/glidepicasso/cover.jpg").into(img);
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
if (activity instanceof klasadownlistener) {
listener = (klasadownlistener) activity;
} else {
throw new ClassCastException(activity.toString() + " musi implementowa� interfejs: OverviewFragment.OverviewFragmentActivityListener");
}
}
}
<LinearLayout 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:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity">
<fragment
android:id="#+id/fragmentup"
class="testowy.com.testowyfragment2.Klasaup"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="5">
</fragment>
<fragment
android:id="#+id/fragmentcenter"
class="testowy.com.testowyfragment2.Klasacenter"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="3">
</fragment>
<fragment
android:id="#+id/fragmetdown"
class="testowy.com.testowyfragment2.Klasadown"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="3">
</fragment>
</LinearLayout>
package testowy.com.testowyfragment2;
import android.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
/**
* Created by Administrator on 2015-07-04.
*/
public class Klasacenter extends Fragment {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater
.inflate(R.layout.fragmentcenter, container, false);
return view;
}
public void SetText(String txt){
TextView view = (TextView) getView().findViewById(R.id.fragmentcenterText);
view.setText(txt);
}
}
package testowy.com.testowyfragment2;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ImageView;
import com.squareup.picasso.Picasso;
public class MainActivity extends Activity implements Klasadown.klasadownlistener{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public void onItemSelected(String txt) {
Klasacenter fragment = (Klasacenter) getFragmentManager()
.findFragmentById(R.id.fragmentcenter);
// sprawdzamy czy fragment istnieje w tej aktywno�ci
if (fragment != null && fragment.isInLayout()) {
// ustawiamy teskt we fragmencie
fragment.SetText(txt);
ImageView img = (ImageView) findViewById(R.id.imgV);
Picasso.with(this).load("http://inthecheesefactory.com/uploads/source/glidepicasso/cover.jpg").fit().into(img);
}
}
}

It's stupid to say but I forget to add internet permission:)
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
now everything is ok!

How to add a progress bar for webview

I'm new to app building... I tried to add a progress bar or a loading screen to a practice app but i wasn't successful.
Could you please help and show me how to do it and where to add it in the code.
Tab2.java:
package com.dan.test;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.LinearLayout;
public class Tab3Fragment extends Fragment {
private WebView webView;
private Bundle webViewBundle;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
LinearLayout ll = (LinearLayout) inflater.inflate(R.layout.tab2,
container, false);
webView = (WebView) ll.findViewById(R.id.tab2);
webView.setWebViewClient(new WebViewClient());
*public void onProgressChanged(WebView view, int progress) {
// Activities and WebViews measure progress with different scales.
// The progress meter will automatically disappear when we reach 100%
activity.setProgress(progress * 1000);
}*
if (webViewBundle == null) {
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("https://www.youtube.com/");
} else {
webView.restoreState(webViewBundle);
}
return ll;
}
#Override
public void onPause() {
super.onPause();
webViewBundle = new Bundle();
webView.saveState(webViewBundle);
}
}
tab2.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/tab2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center">
*<ProgressBar android:layout_height="wrap_content" android:layout_width="wrap_content" android:layout_gravity="center" android:id="#+id/progressBar1"/>*
<WebView
android:id="#+id/webView2"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
Thanks in advance,
Dan.

This is how I have been using it in the past.
webview.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress) {
if (!mProgressDialog.isShowing()) {
mProgressDialog.show();
}
mProgressDialog.setProgress(progress)
if (progress == 100) {
mProgressDialog.dismiss();
}
}
});
Where mProgressDialog is a Dialog where I am showing the progress.

android.view.InflateException: Binary XML file line #7: Error inflating class fragment

I know similar questions like this has been answered but I seem to have done what the tutorial suggested and reading from other posts but still I get the Inflator error. Not sure what I am doing wrong. Please check the code. Thanks a lot.
Edit: I have two fragments in an activity. I have a button in one fragment and a textview in the other. I am trying to understand how fragments work so I made this code myself after reading the documentation. When the button is triggered in one fragment it sends a value to the other fragment in the activity. I am not able to get the fragment to inflate
MainActivity.java
import com.transport.mbtalocpro.PredictedTimeFragment.ButtonClickListener;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
public class MainActivity extends FragmentActivity implements ButtonClickListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public void sendCounter(int count) {
TestFrag testF = (TestFrag) getSupportFragmentManager().findFragmentById(R.id.bottomHalf);
if(testF != null) testF.setCounter(String.valueOf(count));
}
}
PredictedTimeFragment.java
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.InflateException;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
public class PredictedTimeFragment extends Fragment {
ButtonClickListener bListener;
public interface ButtonClickListener {
public void sendCounter(int count);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
try {
View view = inflater.inflate(R.layout.prediction_time, container, false);
Button button = (Button) view.findViewById(R.id.test);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
test(v);
}
});
} catch(InflateException e) {
e.printStackTrace();
System.out.println("Predicted Time Fragment");
}
return super.onCreateView(inflater, container, savedInstanceState);
}
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
bListener = (ButtonClickListener) activity;
} catch (ClassCastException e) {
System.out.println("must implemenet Listener");
}
}
public void test(View view) {
bListener.sendCounter(23);
}
}
TestFrag.java
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.InflateException;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public class TestFrag extends Fragment {
#Override
public View onCreateView(LayoutInflater inflator, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflator, container, savedInstanceState);
try {
View view = inflator.inflate(R.layout.test_frag, container, false);
} catch(InflateException e) {
e.printStackTrace();
System.out.println("Test Fragment");
}
return super.onCreateView(inflator, container, savedInstanceState);
}
public void setCounter(String textS) {
TextView text = (TextView) getView().findViewById(R.id.test1);
text.setText((String) textS);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical">
<fragment
android:id="#+id/topHalf"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="0.5"
android:name="com.transport.mbtalocpro.PredictedTimeFragment"/>
<fragment
android:id="#+id/bottomHalf"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="0.5"
android:name ="com.transport.mbtalocpro.TestFrag"/>
</LinearLayout>
predicted_time.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="#+id/test"
android:text="Test"
android:layout_width="fill_parent"
android:layout_height="30dp"
/>
</LinearLayout>
test_frag.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/test1"
android:layout_width="fill_parent"
android:layout_height="40dp"/>
</LinearLayout>
I am trying to support pre-honey comb versions too and I think I am importing all the support libraries.

Delete your import statement:
import android.support.v4.app.FragmentActivity;
And import again with the pop-up import suggestion. I don´t know why but it always works for me.
import android.support.v4.app.FragmentActivity;

To fix the error:
In Manifest:
<application
android:largeHeap="true"
In .xml file, you must remove the below code:
android:src="#drawable..
android:background="#drawable...
Because the error is out of memory error

In the onCreateView callbacks you have to return the view, which you inflated. This way the system knows which View to draw. Otherwise, if you just return super.onCreateView(...); this way, no UI will appear.
Try this:
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
try {
View view = inflater.inflate(R.layout.prediction_time, container, false);
Button button = (Button) view.findViewById(R.id.test);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
test(v);
}
});
} catch(InflateException e) {
e.printStackTrace();
System.out.println("Predicted Time Fragment");
}
return view;
}
Change the return value of the other Fragment accordingly.

Try replacing the fragment in your xml with android.support.v4.app.Fragment
EDIT: Also try to call super when you are done with your views in onCreateView i.e only once. remove the call to the super in the beginning and see if that helps

change your layout widget id ,it works for me.

Android app in eclipse

i've searched for days but cant find an answer, perhaps you guys can help.
I'm creating an android app in eclipse, it all works just one thing is bugging me.
this is my main.java:
package com.test;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Toast;
public class Main extends Activity implements OnClickListener {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Add Click listeners for all buttons
View firstButton = findViewById(R.id.btn_rassen);
firstButton.setOnClickListener(this);
View secondButton = findViewById(R.id.button2);
secondButton.setOnClickListener(this);
}
// Process the button click events
#Override
public void onClick(View v) {
switch(v.getId()){
case R.id.btn_rassen:
Intent j = new Intent(this, Webscreen.class);
j.putExtra(com.test.Webscreen.URL,
"http://www.google.com/");
startActivity(j);
break;
case R.id.button2:
Intent k = new Intent(this, Webscreen.class);
k.putExtra(com.test.Webscreen.URL,
"http://notworkingurltotest.com");
startActivity(k);
break;
}
}
}
now when it calls the webview.java the page called shows up but not the buttons i created in the layout xml page. does anybody have any idea why this is?
your help is much appreciated!
ohw this is my webscreen.java
package com.test;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.Window;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class Webscreen extends Activity {
public static final String URL = "";
private static final String TAG = "WebscreenClass";
private WebView webview;
private ProgressDialog progressDialog;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.webscreen);
this.getIntent().getExtras();
this.webview = (WebView) findViewById(R.string.webview);
String turl = getIntent().getStringExtra(URL);
Log.i(TAG, " URL = "+turl);
WebView webview = new WebView(this);
setContentView(webview);
final Activity activity = this;
webview.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
public void onLoadResource (WebView view, String url) {
if (progressDialog == null) {
progressDialog = new ProgressDialog(activity);
progressDialog.setMessage("Bezig met laden...");
progressDialog.show();
}
}
public void onPageFinished(WebView view, String url) {
if (progressDialog.isShowing()) {
progressDialog.dismiss();
progressDialog = null;
}
}
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Intent myIntent = new Intent();
myIntent.setClassName("com.test", "com.test.Main");
startActivity(myIntent);
Toast.makeText(activity, "Laden van onderdeel mislukt, probeer het later nog eens! ", Toast.LENGTH_LONG).show();
progressDialog.show();
}
});
webview.loadUrl(turl);
}
}
webscreen.xml layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<!-- <1> -->
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent" android:layout_height="wrap_content">
<EditText android:id="#+id/url" android:layout_height="wrap_content"
android:layout_width="wrap_content" android:lines="1"
android:layout_weight="1.0" android:hint="http://"
android:visibility="visible" />
<Button android:id="#+id/go_button" android:layout_height="wrap_content"
android:layout_width="wrap_content" android:text="go_button" />
</LinearLayout>
<!-- <2> -->
<WebView
android:id="#string/webview"
android:layout_width="fill_parent"
android:layout_height="0dip"
/>
</LinearLayout>

Looks like you're creating a second webview and then setting that as the content view, so your R.layout.webscreen is replaced.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.webscreen);
this.getIntent().getExtras();
this.webview = (WebView) findViewById(R.string.webview);
String turl = getIntent().getStringExtra(URL);
Log.i(TAG, " URL = "+turl);
**WebView webview = new WebView(this);
setContentView(webview);**
.....
Edit:
I've just noticed something in your code, should the line that reads:
this.webview = (WebView) findViewById(R.string.webview);
Acutally be:
this.webview = (WebView) findViewById(R.**id**.webview);
Edit 2:
Just noticed another thing while I was making the project. The following in webscreen.xml:
android:id="#string/webview"
Should be:
android:id="#+id/webview"
Edit 3:
And another thing noticed in webscreen.xml:
android:layout_height="0dip"
Sure you want a 0 height?? ;-)