[android] How to make a phone call programmatically?

I'm passing to an activity the number to call by a bundle

and then, in such activity, I have a button to call to that number, this is the code:

callButton.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(bundle.getString("mobilePhone")));
            }
        }); 

Something is wrong, because when I press the button nothing happens...

What am I doing wrong?

PD: I'm using Android 1.5 compatible project... maybe phone call is incompatible to 1.5?

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main); 
   final Button button = (Button) findViewById(R.id.btn_call);
    button.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            String mobileNo = "123456789";
            String uri = "tel:" + mobileNo.trim();
            Intent intent = new Intent(Intent.ACTION_CALL);
            intent.setData(Uri.parse(uri));
            startActivity(intent);
        }
    });*
 }

 Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:"+198+","+1+","+1)); 
             startActivity(callIntent);

for multiple ordered call

This is used to DTMF calling systems. If call is drop then, you should pass more " , " between numbers.

If you end up with a SecurityException (and the call does not work), You should consider requesting the user permission to make a call as this is considered a dangerous permission:

ActivityCompat.requestPermissions(
    activity,
    new String[] {Manifest.permission.CALL_PHONE},
    1
);

Note this has nothing to do with the manifest permission (that you must have as well)

Here I will show you that how you can make a phone call from your activity. To make a call you have to put down this code in your app.

try {
    Intent my_callIntent = new Intent(Intent.ACTION_CALL);
    my_callIntent.setData(Uri.parse("tel:"+phn_no));
    //here the word 'tel' is important for making a call...
    startActivity(my_callIntent);
} catch (ActivityNotFoundException e) {
    Toast.makeText(getApplicationContext(), "Error in your phone call"+e.getMessage(), Toast.LENGTH_LONG).show();
}

Take a look there : http://developer.android.com/guide/topics/intents/intents-filters.html

DO you have update your manifest file in order to give call rights ?

In the selected answer, there is not check for marshmallow permission. It will not work directly in marshmallow 6.0 or above device.

I know I am too late but this question has large vote so I thought it will help to others in future.

In marshmallow devices we need to take run time permission for call...

Here is example to make call in marshmallow or above.

How to make call in android marshmallow 6.0 or above

Tried this on my phone and it works perfectly.

Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel:900..." ));
startActivity(intent);

Add this permission in manifest file.

<uses-permission android:name="android.permission.CALL_PHONE" />

This doesn't require a permission.

val intent = Intent(Intent.ACTION_DIAL, Uri.parse("tel:+123456"))
startActivity(intent)

Or

val intent = Intent(Intent.ACTION_DIAL, Uri.fromParts("tel", "+123456", null))
startActivity(intent)

But it shows one more dialog (asking whether you want to call phone just once or always). So it would be better to use ACTION_CALL with a permission (see Revoked permission android.permission.CALL_PHONE).

Solved..! September 5, 2020.

It is working very well. In this way, you do not need to have permission from user. You can open directly phone calling part.

Trick point, use ACTION_DIAL instead of ACTION_CALL.

private void callPhoneNumber() {
    String phone = "03131693169";
    Intent callIntent = new Intent(Intent.ACTION_DIAL);
    callIntent.setData(Uri.parse("tel:" + phone));
    startActivity(callIntent);
}

For more question, ask me on Instagram: @canerkaseler

If anyone is looking for in Kotlin

    val  uri = "tel:+800******"
    val call_customer_service = Intent(Intent.ACTION_CALL)
    call_customer_service.setData(Uri.parse(uri))
    startActivity(call_customer_service)

Like some other solutions it requires android.permission.CALL_PHONE permission.