Obtain the contacts in the system address book in Android and display them in edittext.

In many cases, we have to use the operations of selecting contacts. It is very troublesome to write it by ourselves. Instead, it is better to directly call the system's address book.

Let's look at the requirements below:

 

Requirements:
When an edittext button is clicked, go to the system address book. Select one address book item and return it to the current interface.
The username of the selected contact number is displayed on edittext.

 

 

Go directlyCode:

 Import  Android. App. activity;  Import  Android. content. contentresolver;  Import Android. content. intent;  Import  Android. database. cursor;  Import  Android.net. Uri;  Import  Android. OS. Bundle;  Import  Android. provider. contactscontract;  Import  Android. View. view;  Import  Android. widget. edittext;  Public   Class Mainactivity Extends  Activity {edittext text; string username, usernumber; @ override  Public   Void  Oncreate (bundle savedinstancestate ){  Super  . Oncreate (savedinstancestate); setcontentview (R. layout. activity_main); text = (Edittext) findviewbyid (R. Id. Number );}  Public   Void  Click (view v) {startactivityforresult (  New Intent (intent. action_pick, contactscontract. Contacts. content_uri ), 0 ) ;}@ Override  Protected   Void Onactivityresult ( Int Requestcode, Int  Resultcode, intent data ){  Super  . Onactivityresult (requestcode, resultcode, data );  If (Resultcode = Activity. result_ OK) {contentresolver recontentresolverol =Getcontentresolver (); Uri contactdata = Data. getdata (); @ suppresswarnings ( "Deprecation" ) Cursor = Managedquery (contactdata, Null , Null , Null , Null  ); Cursor. movetofirst (); Username = Cursor. getstring (cursor. getcolumnindex (contactscontract. Contacts. display_name); string contactid =Cursor. getstring (cursor. getcolumnindex (contactscontract. Contacts. _ id); cursor phone = Recontentresolverol. Query (contactscontract. commondatakinds. Phone. content_uri,  Null  , Contactscontract. commondatakinds. Phone. contact_id + "=" + Contactid,  Null  ,  Null  );  While (Phone. movetonext () {usernumber = Phone. getstring (phone. getcolumnindex (contactscontract. commondatakinds. Phone. Number); text. settext (usernumber + "(" + Username + ")" );}}}} 

 

You need to add permissions:

<Uses-Permission Android: Name = "android. Permission. read_contacts"/>
<Uses-Permission Android: Name = "android. Permission. write_contacts"/>