In Android, how to pick a contact and display it on my app?

Question

I am a beginner to android, i am building a application in which when the user presses a button, the contacts which is stored in the mobile are shown. When he selects a cont

Answer 1

Simplest way I've found to pick a contact with phone number, and show display name and the selected phone number. See also: full, executable example as gist.

private final static int PICK_CONTACT = 0;

private void pickContact() {
    Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);

    // Show only contacts with phone number. (Also forces user to choose ONE 
    // phone number for a contact that has several.)
    intent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE);

    startActivityForResult(intent, PICK_CONTACT);
}

@Override
public void onActivityResult(int reqCode, int resultCode, Intent data) {
    super.onActivityResult(reqCode, resultCode, data);
    switch (reqCode) {
        case (PICK_CONTACT):
            if (resultCode == Activity.RESULT_OK) {
                handleSelectedContact(data);
            }
            break;
    }
}

private void handleSelectedContact(Intent intent) {
    Uri contactUri = intent.getData();
    Cursor c = getContentResolver().query(contactUri, null, null, null, null);
    if (c.moveToFirst()) {
        String name = c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
        String selectedPhone = c.getString(c.getColumnIndex(ContactsContract.Contacts.Entity.DATA1));

        String message = String.format("Name %s, selected phone %s", name, selectedPhone);
        Snackbar.make(contentView, message, Snackbar.LENGTH_LONG).show();
    }
    c.close();
}

If you need other fields, for example both phone number and email, check out answers in this question.