Android obtains the contact name, phone number, and other information in the system in its own activity.

 

1. Public class contracttest extends activity {
2. Private Static final string tag = "u0fly contracttest ==> ";
4. Private Static final int pick_contact = 3;
6. @ Override
7. Public void oncreate (bundle savedinstancestate ){
8. Super. oncreate (savedinstancestate );
9. Setcontentview (R. layout. Main );
11. Log. D (TAG, "oncreate ");
13. Textview TV = (textview) findviewbyid (R. Id. textview );
15. Button BTN = (button) findviewbyid (R. Id. BTN );
16. BTN. setonclicklistener (New View. onclicklistener (){
18. @ Override
19. Public void onclick (view v ){
20. // Todo auto-generated method stub
    
21. Intent intent = new intent (intent. action_pick, contactscontract. Contacts. content_uri );
22. Startactivityforresult (intent, pick_contact );
23. }
24. });
28. }
30. @ Override
31. Public void onactivityresult (INT reqcode, int resultcode, intent data ){
32. Super. onactivityresult (reqcode, resultcode, data );
33. Log. D (TAG, "onactivityresult ");
34. Switch (reqcode ){
35. Case (pick_contact ):
36. Log. D (TAG, "onactivityresult pick_contact ");
37. If (resultcode = activity. result_ OK ){
38. Uri contactdata = data. getdata ();
39. Contentresolver c = getcontentresolver ();
40. Cursor cursor = C. Query (contactdata, null );
41. If (cursor. movetofirst ()){
43. String [] phones_projection = new string [] {"_ id", "display_name", "data1", "data3 "};
44. String contactid = cursor. getstring (cursor. getcolumnindex (phonelookup. _ id ));
46. Cursor phone = C. Query (
47. Contactscontract. commondatakinds. Phone. content_uri,
48. Phones_projection,
49. Contactscontract. commondatakinds. Phone. contact_id
50. + "=" + Contactid, null, null );
51. // Name type ..
    
52. While (phone. movetonext ()){
53. Int I = phone. getint (0 );
55. String STR = phone. getstring (1 );
56. STR + = "";
57. STR + = phone. getstring (2 );
58. STR + = "";
59. STR + = phone. getstring (3 );
60. }
62. // Other data is available for the contact. I have decided
    
63. // To only get the name of the contact.
    
64. String name = cursor. getstring (cursor. getcolumnindexorthrow (contactscontract. Contacts. display_name ));
65. Log. D (TAG, "onactivityresult pick_contact result_ OK 444 ");
66. // Toast. maketext (getapplicationcontext (), name, Toast. length_short). Show ();
    
67. Textview TV = (textview) findviewbyid (R. Id. textview );
68. TV. settext (name );
69. }
70. }
71. }
72. }
73. }

 

Add permission:

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