If you are developing any application which requires you to dial a phone number is very simple. Android provides inbuilt functionality to dial a particular number programatically. Here we are assuming that you have an EditText box for user to input phone number to dial and a Button to initiate the call.
To open the dialer we need to use Intent and the action to be performed here is ACTION_DIAL, and data to be provided is the phone number, which initiates call explicitly. Below is the code snippet that performs this operation.
Intent callIntent = new Intent(Intent.ACTION_CALL);
callIntent.setData(Uri.parse("tel:" + strPH));
where strPH is the number to be dialed which got through EditText textbox. Call the startActivity to start the activity as shown below:
public class MainActivity extends Activity
public void onCreate(Bundle savedInstanceState)
edittext = (EditText) findViewById(R.id.edittext);
button = (Button) findViewById(R.id.button);
public void onClick(View v)
String strPH = edittext.getText().toString().trim();
Intent i = new Intent(android.content.Intent.ACTION_DIAL, Uri.parse("tel:+" + strPH));
This permission should be added to AndroidManifest.xml
<uses-permission android:name="android.permission.CALL_PHONE" />