Develop Reference

Why placing a call programatically gives error message "Internet Calling not Supported"?

This is my code:
public String a_number;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_make_the_call);
//
callButton = (ImageButton)findViewById(R.id.call_button);
aCall = (TextView)findViewById(R.id.number_a);
a_number = aCall.getText().toString();
}
public void makeCallFunction(View view) {
String temp = "";
temp = "tel:"+a_number;
Intent callIntent = new Intent(Intent.ACTION_CALL);
callIntent.setData(Uri.parse(temp));
startActivity(callIntent);
}
My XML file contains:
<ImageButton
android:id="#+id/call_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:src="#drawable/dial"
android:onClick="makeCallFunction"/>
I have added the following in my manifest file:
<uses-permission android:name="android.permission.CALL_PHONE"/>
I searched my best for answers but found nothing helpful..
EDIT:
When I give a value directly, the call gets placed now.
Eg:
callIntent.setData(Uri.parse("tel:9876543210"));
But the problem remains when I read the number from my text view and try to place call with that number.
Can someone help me out?
Thanks in advance
If there's some alternate way to implement call, that'd help too.

Disable SIP Internet Calling and VoIP on your emulator or debugging device. This is the steps for Samsung Galaxy S4 :
go to settings > call > disable internet calling(in bottom)
I don't know what you are doing wrong, but see for yourself a working example :
MakeTheCallActivity.java
package com.example.makethecall;
import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class MakeTheCallActivity extends ActionBarActivity {
private EditText mEditText;
private Button mButton;
private final String TAG = "MakeTheCallActivity";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_make_the_call);
mButton = (Button)findViewById(R.id.call_button);
mButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mEditText = (EditText)findViewById(R.id.phone_number);
String phoneNumber = mEditText.getText().toString();
Log.d(TAG, phoneNumber);
Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + phoneNumber));
startActivity(intent);
}
});
}
}
activity_make_the_call.xml
<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" tools:context=".MakeTheCallActivity"
android:orientation="vertical">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/phone_number" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="call"
android:id="#+id/call_button" />
</LinearLayout>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.sauravsamamt.makethecall" >
<uses-permission android:name="android.permission.CALL_PHONE" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MakeTheCallActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
You can see I'm not using a hardcoded number. Make sure you enter a valid number. That's it.

Android Multiple Button Handle

I have created this activity with two buttons
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.content.Intent;
public class SelectOption extends Activity{
Button bu1,bu2,bu3;
#Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.option_main);
bu1 = (Button)findViewById(R.id.button1);
bu2 = (Button) findViewById(R.id.button2);
bu1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent myintent1 = new Intent(SelectOption.this, CheckBalance.class);
startActivity(myintent1);
}
});
bu2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent myintent2 = new Intent(SelectOption.this, CheckAvailability.class);
startActivity(myintent2);
}
});
and there are 2 activities called CheckBalance.java and CheckAvailability.java also. but when I Run the program nothing happen on it. Does anyone have an idea what wrong with this??

Use this code in on click listener
Intent intent = new Intent();
intent.setClass(getApplicationContext(), CheckBalance.class);
startActivity(intent);
and also check weather you activities declare in manifest file and in Xml also....

This is My Manifest file (On behalf of Original question Asker(Anuradha))
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.people.oshada"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-sdk android:minSdkVersion="15" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name=".TheMainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SelectOption"></activity>
<activity android:name=".CheckBalance"></activity>
<activity android:name=".CheckAvailability"></activity>
</application>

In ANDROID MAINFEST FILE u have to add
<activity android:name=". CheckBalance"/>
<activity android:name=". CheckAvailability"/>

Android Step 1 from Root Developer Page Activity not Working

I attempted to run "Clean Code" according to this link, however nothing is happening. From being a Renegade developer my intuition says "Button onClick" is missing but I could be wrong. Here is my code written according to what the instructions are:
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
public class BuildingaSimpleUserInterfaceApi8Activity extends Activity {
public final static String EXTRA_MESSAGE = "com.developer.android.com_training_basics_firstapp_building_ui.DISPLAYMESSAGEACTIVITY";
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
/**This is how I work with Buttons and the Next Activity, however this method IS NOT defind
* in the very first Android Tutorial for sending information onClick.
Button bButtonone = (Button) findViewById(R.id.button_send);
bButtonone.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
// TODO Auto-generated method stub
startActivity(new Intent("com.developer.android.com_training_basics_firstapp_building_ui.DISPLAYMESSAGEACTIVITY"));
}
});
}
*/
/** Called when the user selects the Send button */
public void sendMessage(View view) {
// Do something in response to button
Intent intent = new Intent(this, DisplayMessageActivity.class);
EditText editText = (EditText) findViewById(R.id.edit_message);
String message = editText.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);
}
}
Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.developer.android.com_training_basics_firstapp_building_ui"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name=".BuildingaSimpleUserInterfaceApi8Activity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.developer.android.com_training_basics_firstapp_building_ui.DisplayMessageActivity" />
</application>
</manifest>

It looks like you forgot the line to start the activity:
public void sendMessage(View view) {
...
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent); // add me!
}

I read through the code at the site listed and you have missed one line:
startActivity(intent);
at the end od sendMessage.

App not launching and get crashed when using the imagebutton in android

I just started to develop my first application in android.
Here i used a image button.
But when i try to run my app in device it is not launching a an errors are showing in the log cat.
can any one please help me in how to resolve this error.Thanks in advance.Hoping for your help.
This is the code i used:
ArraysActivity.java
package com.me.array;
//import com.sweans.pus.SingleListItem;
//import com.sweans.pus.SecondScreen;
//import com.me.array.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.AdapterView;
public class ArraysActivity extends Activity {
ListView listView;
private ImageButton mybtn;
ArrayAdapter<String> adapter;
String[] sujith =new String[]{ "The-Birth", "Menu", "Album",
"Events", "Blog", "Press", "Reservation", "MONOMANIA",
"Contact" };
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mybtn = (ImageButton)findViewById(R.id.imgbtn);
mybtn.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
Intent nextScreen = new Intent(getApplicationContext(), ZActivity.class);
startActivity(nextScreen);
}
});
listView = (ListView) findViewById(R.id.mylist);
adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, android.R.id.text1, sujith);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
// Intent nextScreen = new Intent(getApplicationContext(), SingleListItem.class);
// startActivity(new Intent(action));
if(position == 0){
Intent i = new Intent(ArraysActivity.this, SingleListItem.class);
// passing variable
i.putExtra("my.package.dataToPass","new");
//i.putExtra( "int",position);
startActivity(i);
}
else if(position == 1){
Intent i = new Intent(ArraysActivity.this, ListSample.class);
startActivity(i);
}
else if(position == 2){
Intent i = new Intent(ArraysActivity.this, MyGridView.class);
startActivity(i);
}
else if(position == 4){
Intent i = new Intent(ArraysActivity.this, MessageList.class);
startActivity(i);
}
}
});
}
}
main.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" >
<!-- <ImageView
android:id="#+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="278dp"
android:scaleType="fitXY"
android:src="#drawable/home_page" /> -->
<ImageButton
android:id="#+id/imgbtn"
android:layout_width="fill_parent"
android:layout_height="278dp"
android:scaleType="fitXY"
android:src="#drawable/home_page"
android:contentDescription="#string/desc"/>
<ListView
android:id="#+id/mylist"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
Androidmanifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.me.array"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="7" />
<application
android:icon="#drawable/icon_andro"
android:label="#string/app_name" >
<activity
android:name=".ArraysActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SingleListItem"></activity>
<activity android:name=".menu"></activity>
<activity android:name=".ListSample"></activity>
<activity android:name=".SeperatedListAdapter"></activity>
<activity android:name=".MyGridView"></activity>
<activity android:name=".Message"></activity>
<activity android:name=".MessageList"></activity>
<activity android:name=".BaseFeedParser"></activity>
<activity android:name=".SeparatedListAdapter"></activity>
<activity android:name=".RssHandler"></activity>
<activity android:name=".ZActivity"></activity>
</application>
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
The log cat is showing a NPE in line number 36,ie mybtn.setOnClickListener(new OnClickListener(){.
my log cat is

Instead of the anonymous onClikListener, try it like this:
mybtn.setOnClickListener(this);
Then, in the end of your source, implement the listener,
public void onClick(View v)
{
//do the stuff you want here
}
I would replace getApplicationContext() with "this" btw, of course in this version only.
It should work this way, I think.
OR, you might want to try it like this:
Context ctx; //define it as class variable
In the onCreate:
ctx=this;
Replace your getApplicationContext() with ctx, I think that is the thing which gives you the NullPointer.

JAVA - Android error: The application has stopped unexpectedly please try again

I made an app which is just working fine. But when i click on "cancel" or "ok" button when i run the program, instead of linking me to result.java, the simulator give me "The application has stopped unexpectedly please try again" Here's the code
import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.database.CursorJoiner.Result;
import android.os.Bundle;
import android.view.View;
import android.widget.AutoCompleteTextView;
public class lib_main extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void onAddClick (View botton){
AutoCompleteTextView title = (AutoCompleteTextView)findViewById(R.id.Title);
AutoCompleteTextView author = (AutoCompleteTextView)findViewById(R.id.Author);
AutoCompleteTextView isbn = (AutoCompleteTextView)findViewById(R.id.ISBN);
Intent intent = new Intent();
intent.setClass(this,Result.class);
intent.putExtra("Title", title.getText().toString());
intent.putExtra("Author", author.getText().toString());
intent.putExtra("ISBN", isbn.getText().toString());
startActivity(intent);
}
public void onCancelClick(View botton){
Intent intent = new Intent();
intent.setComponent(new ComponentName(this,Result.class));
intent.putExtra("Cancel","Cancel");
startActivity(intent);
}
}
this is Result.java
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class Result extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.result);
TextView resultText=(TextView)findViewById(R.id.resultText);
Bundle bundle =getIntent().getExtras();
if(bundle.getString("Cancel")!= null)
{resultText.setText("operation cancel");}
else
{ String book =bundle.getString ("Title");
String title =bundle.getString ("Author");
String isbn =bundle.getString ("ISBN");
resultText.setText(
getString (R.string.resultOk)+""+book+""+ title+""+isbn);
}
}
}
the error log write "No command output when running:'am start-n com.Library.doc/com.Library.doc.lib_main-a android.intent.action.MAIN-c android.intent.category.LAUNCHER' in device emulator-5554"
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.Library.doc"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".lib_main"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Result"
android:label="#string/result">
</activity>
</application>
<uses-sdk android:minSdkVersion="8" />
Can anyone help me with this problem?

Quick question, have you registered both Activities? If you only provide for one in your manifest file you're going to get this error every time you attempt to do something involving the unregistered activity.