ContentProvider: The Central Archive, as well as an example of getting a contact's phone number. contentprovider

ContentProvider: The Central Archive, as well as an example of getting a contact's phone number. contentprovider
The Android official document describes five Data Storage Methods: sqlite, SharedPreferences, network storage, external storage, and file storage. However, these data cannot be shared, then we will introduce the main character of today: ContentProvider

ContentResolver can operate data in ContentProvider. You can use the getContentResolver () method provided by Activity. It has four methods with the same signature: insert, update, delete, query

Get contact information

1. // Open the address book with implicit intent
2. Intent intent =newIntent(Intent.ACTION_PICK,ContactsContract.Contacts.CONTENT_URI);
3. startActivityForResult(intent,1001);

1. // Obtain the returned result after selection
2. @Override
3. protectedvoid onActivityResult(int requestCode,int resultCode,Intent data){
4. super.onActivityResult(requestCode, resultCode, data);
5. if(requestCode ==1001){
6. if(resultCode == RESULT_OK){
7. ContentResolver resolver = getContentResolver();
8. Uri uri = data.getData();
9. //uri = content://com.android.contacts/contacts/lookup/0r5-D9ADC7B9BBC9C7B9DBBDADC9/5
10. Cursor cursor = resolver.query(uri,null,null,null,
11. null);
12. if(cursor.moveToFirst()){
13. for(int i =0; i < cursor.getColumnCount(); i++){
14. Log.i("-->", cursor.getColumnNames()[i]+":"+ cursor.getString(i));
15. }

 

1. sort_key:wang hongxiao
2. photo_uri:null
3. send_to_voicemail:0
4. contact_status:null
5. contact_status_label:null
6. pinned:0
7. display_name:wang hongxiao
8. phonebook_label_alt:H
9. phonebook_bucket:23
10. contact_status_res_package:null
11. in_default_directory:1
12. photo_id:null
13. custom_ringtone:null
14. _id:5
15. times_contacted:0
16. phonebook_label:W
17. display_name_alt:hongxiao, wang
18. lookup:0r5-D9ADC7B9BBC9C7B9DBBDADC9
19. phonetic_name:null
20. last_time_contacted:0
21. contact_last_updated_timestamp:1477791122100
22. has_phone_number:1
23. in_visible_group:1
24. display_name_source:40
25. photo_file_id:null
26. is_user_profile:0
27. contact_status_ts:null
28. sort_key_alt:hongxiao, wang
29. phonebook_bucket_alt:8
30. contact_presence:null
31. starred:0
32. photo_thumb_uri:null
33. contact_status_icon:null
34. contact_chat_capability:null
35. phonetic_name_style:0
36. name_raw_contact_id:5

Through analysis, we can get the three fields we care about.

 

From Weizhi note (Wiz)