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

Source: Internet
Author: User

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)



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