Problem in calling a person

See more:

Java

Android

Sir, I have created an application which connects to a specific website and calls a particular person etc., I have generated a signed ".apk" successfully without any errors and my application also runs on my android device but it fails to call a particular number. Kindly help me to solve this problem.

here is what I have done:

I have created a button for calling:

<Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="call me?"
        android:id="@+id/button4"
        android:layout_below="@+id/editText4"
        android:layout_alignRight="@+id/textView4"
        android:layout_alignEnd="@+id/textView4" />

Added a manifest file:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.vis.vis" >
    <uses-permission android:name="android.permission.CALL_PHONE" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />

Declared and defined the button to call:

final Button call = (Button) findViewById(R.id.button4);
call.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent in=new Intent(Intent.ACTION_CALL,Uri.parse("1234567890"));
                try{
                    startActivity(in);
                }

                catch (android.content.ActivityNotFoundException ex){
                    Toast.makeText(getApplicationContext(),"Try again!",Toast.LENGTH_SHORT).show();
                }
            }
        });

but it goes for catch part pop-upping "Try again!"
Have I missed anything?
Sir, Kindly help me with this.