how do i open contacts when i click a button defined in main.xml
You can set an Event on Button click by setting an OnClickListener
on the Button with the following code, and use Intent to call ContactPicker activity:
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent= new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intent, PICK_CONTACT);
}
});
and in onActivityResult()
process the contact uri to load details of 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) {
Uri contactData = data.getData();
Cursor c = managedQuery(contactData, null, null, null, null);
if (c.moveToFirst()) {
String name = c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
// TODO Fetch other Contact details as you want to use
}
}
break;
}
}
You should use startActivityForResult
Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intent, 1);
See "get contact info from android contact picker" for more information.