Develop Reference

Easy share action is not working in WebView Android app

I have been trying almost everything to get this share button to work. The button is placed right but it's not getting clicked and the share window is not showing.
Secondly, I want it to share Web URL of the page when clicked and I am also unable to understand how to do that.
Moreover, I do not want the button to be hidden in the Action settings. I want it to be displayed on the top bar, that's what's my main problem is.
MainActivity.java
package com.yoalfaaz.yoalfaaz;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.ShareActionProvider;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.support.v4.view.MenuItemCompat;
public class MainActivity extends AppCompatActivity {
private WebView YoWeb;
private ShareActionProvider mShareActionProvider;
SwipeRefreshLayout swipe;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
swipe = (SwipeRefreshLayout) findViewById(R.id.swipe);
swipe.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
LoadWeb();
}
});
LoadWeb();
}
public void LoadWeb() {
YoWeb = (WebView)findViewById(R.id.webview);
WebSettings webSettings = YoWeb.getSettings();
webSettings.setJavaScriptEnabled(true);
YoWeb.loadUrl("http://www.yoalfaaz.com");
swipe.setRefreshing(true);
YoWeb.setWebViewClient(new WebViewClient() {
//onPageFinished Method
public void onPageFinished(WebView view, String url) {
//Hide the SwipeRefreshLayout
swipe.setRefreshing(false);
}
});
}
#Override
public void onBackPressed() {
if (YoWeb.canGoBack()) {
YoWeb.goBack();
} else {
super.onBackPressed();
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
switch (item.getItemId()) {
case R.id.action_settings:
return true;
default:
return super.onOptionsItemSelected(item);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate menu resource file.
getMenuInflater().inflate(R.menu.menu_main, menu);
// Locate MenuItem with ShareActionProvider
MenuItem item = menu.findItem(R.id.menu_item_share);
// Fetch and store ShareActionProvider
mShareActionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(item);
// Return true to display menu
return true;
}
// Call to update the share intent
private void setShareIntent(Intent shareIntent) {
if (mShareActionProvider != null) {
mShareActionProvider.setShareIntent(shareIntent);
}
}
private Intent createShareIntent() {
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_TEXT, "This is my text to send.");
shareIntent.setType("text/plain");
startActivity(shareIntent);
return shareIntent;
}
}
menu_main.xml
<menu 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"
tools:context="com.yoalfaaz.yoalfaaz.MainActivity">
<item
android:id="#+id/menu_item_share"
android:showAsAction="ifRoom"
android:title="Share"
app:actionProviderClass="android.support.v7.widget.ShareActionProvider"
app:showAsAction="always" />
<item
android:id="#+id/action_settings"
android:orderInCategory="100"
android:title="#string/action_settings"
app:showAsAction="never" />
</menu>
First, the button is not clickable.
Second, how to share the current page URL?
These are the two queries which I am unable to solve.

Android ImageButton onClick

I have problem with button in activity_main.xml,
I need to launch by click on "imageButton8" a webView (website URL) in application.
MainActivity.Java
package com.XX.app;
import com.XX.app.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.ImageButton;
public class MainActivity extends Activity {
WebView view;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Empêcher le téléphone de passer en mode veille
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
//When User click on the button imageButton8 the Activity2 launch
Button imageButton8 = (Button) findViewById(R.id.imageButton8);
setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(v.getContext(), Activity2.class);
startActivityForResult(intent, 0);
}
});
}
private void setOnClickListener(OnClickListener onClickListener) {
// TODO Auto-generated method stub
}
//loads RETURN URL on lastpage
#Override
public void onBackPressed() {
if(this.view.canGoBack())
{
this.view.goBack();
} else {
new AlertDialog.Builder(this)
.setIcon(android.R.drawable.ic_dialog_alert)
.setTitle("إغلاق تطبيق جمعية البر و التعاون")
.setMessage("هل أنت متأكد أنك تريد إغلاق تطبيق جمعية البر و التعاون ؟")
.setPositiveButton("نعم", new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
})
.setNegativeButton("لا", null)
.show();
}
}
}
activity_main.xml for imageButton8 is
<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:background="#drawable/background_1">
<ImageButton
android:id="#+id/imageButton8"
android:onClick="click"
android:layout_width="90dp"
android:layout_height="90dp"
android:layout_marginLeft="140dp"
android:layout_marginTop="380dp"
android:background="#0000"
android:scaleType="fitXY"
android:src="#drawable/btn_www" />
</RelativeLayout>
Activity2.java
package com.XX.app;
import com.XX.app.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.app.Application;
import android.os.Bundle;
public class Activity2 extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_webview);
}
}
activity_webview.xml
<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:background="#drawable/background_1">
<WebView
android:id="#+id/webView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" />
</RelativeLayout>
In the same project,
2. Others Issues: I have 08 buttons. How do I execute each button in its template xml?
For example: Button 1 => about_obama.xml. When user click (in this file) it will find the description of obama.
Button 2 => ....xml...etc!
Button 3......

You need to set the onclickListener for the ImageButton using the ImageButton's setOnClickListener() method. So, in your MainActivity, inside your onCreate() method, do the following:
Button imageButton8 = (Button) findViewById(R.id.imageButton8);
// Set the OnClickListener on the button itself
imageButton8.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, Activity2.class); // Use the MainActivity context
startActivityForResult(intent, 0);
}
});
// You should delete the private setOnClickListener() method as it does not
// have any purpose
To specify the onClick() in the xml when the Button is clicked, set the:
android:onClick:"some_method"
property for your button. Then declare and define this method in your Activity.

I am facing difficulty to show Google Map after click on Button in android?

I am creating an app in android.
In this app i want to show google Map after click on button.
I have declared button and i declared listener.
But my problem is i want to call another activity class in the action listener and show google map.
But it is not working, I changed emulator from google to Android it work but google API is not called and shows me error.
for this i used this code But my Map is not show and my Application is Terminated .
//----------------Main Activity ---------------//
import java.security.PublicKey;
import com.google.android.maps.MapView;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.os.Build;
public class MainActivity extends ActionBarActivity {
EditText TextFeild;
Button button1;
Context context=this;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addOnListenerAction();
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}
public void addOnListenerAction()
{
TextFeild=(EditText) findViewById(R.id.editText1);
button1=(Button) findViewById(R.id.button1);
button1.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View v)
{
Intent intent=new Intent(context,MapViwer.class);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}
}
//_-------------------MapViwer Class------------//
import android.os.Bundle;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
public class MapViwer extends MapActivity
{
MapView map;
public void onCreate(Bundle setInstanceState)
{
super.onCreate(setInstanceState);
setContentView(R.layout.activity_main);
map=(MapView) findViewById(R.id.mapView);
}
#Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}

So you're saying, you have a class named (MapViwer) that defines a layout and the class (MapViwer) contains information for the map to work. To deploy a class from your MainActivity.class, use the following method.
in MainActivity, under the public class add this
private Button button1;
then add this function -
button1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Intent i = new Intent(getApplicationContext(), MapViwer.class);
startActivityForResult(i, 100);
}
});

Use it like this..It worked for me..
Button b=(Button) findViewById(R.id.button1);
b.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent=new Intent(MainActivity.this,MapViewer.class);
startActivity(intent);
}
});
and in the Mapviewer class just call the mapviewer.xml
Now, the mapviewer.xml should look like this
<?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" >
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_marginBottom="34dp" />
</LinearLayout>
Try it out..

Replace context with Mainactivity.this in the code
Intent intent=new Intent(context,MapViwer.class);
You just only defined intent but didn't call the Mapviewr activity
Correct code:
public void addOnListenerAction()
{
TextFeild=(EditText) findViewById(R.id.editText1);
button1=(Button) findViewById(R.id.button1);
button1.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View v)
{
Intent intent=new Intent(Mainactivity.this,MapViwer.class);
startActivity(intent);
}
});
}

Android RuntimeException on setContentView

I am building an app for android, and while setting up my settingActivity and i get this error:
This happens when I start the activity. Before I moved the setContentView(R.layout.activity_setting); to the start of the onCreate() function, the application threw a NullPointerException at b.setOnCLickListener().
Now it throws a RuntimeException at the setContentView(); How do I resolve this?
01-18 14:28:59.116: E/AndroidRuntime(9463): java.lang.RuntimeException: Unable to start activity ComponentInfo{tk.yteditors.london2013/tk.yteditors.london2013.SettingActivity}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
01-18 14:28:59.116: E/AndroidRuntime(9463):
at tk.yteditors.london2013.SettingActivity.onCreate(SettingActivity.java:27)
Java code:
package tk.yteditors.london2013;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Random;
import android.annotation.TargetApi;
import android.app.Dialog;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class SettingActivity extends PreferenceActivity{
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setupActionBar();
setContentView(R.layout.activity_setting);
Button b = (Button) findViewById(R.id.sendAnswers);
b.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View pView) {
sendAnswers();
}
});
}
/**
* Set up the {#link android.app.ActionBar}, if the API is available.
*/
#TargetApi(Build.VERSION_CODES.HONEYCOMB)
private void setupActionBar() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
getActionBar().setDisplayHomeAsUpEnabled(true);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public boolean onOptionsItemSelected(MenuItem item){
switch(item.getItemId()){
case R.id.MenuSettings:
//boo
return true;
default:
return super.onOptionsItemSelected(item);
}
}
public void sendAnswers(){
final Dialog dialog = new Dialog(this);
dialog.setContentView(R.layout.activity_confirm_dialog);
dialog.setTitle("Antwoorden verzenden?");
((Button) dialog.findViewById(R.id.dialogNo)).setOnClickListener(new OnClickListener(){
#Override
public void onClick(View arg0) {
dialog.dismiss();
}
});
((Button) dialog.findViewById(R.id.dialogYes)).setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
EditText edit = (EditText) dialog.findViewById(R.id.sendAnswers);
packHTML(edit.getText().toString());
}
});
}
public void packHTML(String name){
try {
String fileDir = "/sdcard/LondonAnswers";
File dir = new File(fileDir);
dir.mkdirs();
String fileName = name +new Random().nextLong() +".html";
File file = new File(dir, fileName);
FileWriter fw = new FileWriter(file, false);
fw.append("<html>\n");
fw.append("<head><title>" +name +"'s antwoorden</title></head>\n");
fw.append("<body>\n");
fw.append("<h1>" +name +"'s antwoorden</h1>\n");
fw.append("</body>\n");
fw.append("</html>");
fw.close();
Intent intent = new Intent(this, MainActivity.class);
intent.putExtra("webAdress", "file://" +fileDir +fileName);
startActivity(intent);
} catch (IOException e) {
Toast t = new Toast(this);
t.setText("Er is iets mis gegaan tijdens het maken van het bestand");
t.setDuration(Toast.LENGTH_SHORT);
t.show();
e.printStackTrace();
}
}
}
xml:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Antwoorden"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Button
android:id="#+id/sendAnswers"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Verzend antwoorden" />
<Button
android:id="#+id/removeAnswers"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Verwijder antwoorden" />
<Button
android:id="#+id/answersNYI"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="NYI" />
</LinearLayout>
</ScrollView>

PreferenceActivity is-a ListActivity, and a ListActivity requires a layout which has a ListView with id #android:id/list. This is also shown in the exception you posted:
Your content must have a ListView whose id attribute is 'android.R.id.list'
Now, it seems that your code doesn't appear to be that of a regular Android preferences activity. Therefore you should change the extends PreferencesActivity to just extends Activity.

Android ImageView onclicklistenener not working

I am new to android and I tried to implement onclicklistener on image view. But it's not working.. Please help. When I click on the image it dose not responds.
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
//Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
ImageView ad = (ImageView) findViewById(R.id.imageView1);
ad.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
startActivity(new Intent(MainActivity.this, ads.class));
}
});
return true;
}
}
this is my code...

I think you should declare your ImageView in onCreate() as below:
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageView ad = (ImageView) findViewById(R.id.imageView1);
ad.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
startActivity(new Intent(MainActivity.this, ads.class));
}
});
}

You have two problems
First:
startActivity(new Intent(MainActivity.this, ads.class));
The second argument should be an activity
Second:
In your case, the ImageView and the listener should be in your onCreate()

When I had a similar issue, I got it fixed it by adding android:layout_width="44dp" to make sure user would have enough area to click on. Then, you can align image content the way you wannt. In my case:
<ImageView
android:id="#+id/locationImageView"
android:layout_width="44dp"
android:layout_height="16dp"
android:layout_centerVertical="true"
android:layout_marginStart="4dp"
android:layout_toEndOf="#id/locationText"
android:adjustViewBounds="true"
android:scaleType="fitStart"
android:src="#drawable/icn_edit_small_white"/>