ContentProvider中央档案馆,以及获取联系人电话的示例，contentprovider

ContentProvider中央档案馆,以及获取联系人电话的示例，contentprovider

Android官方文档介绍的数据存储方式共有五种,sqlite,SharedPreferences,网络存储,外储存储,文件存储,但是这些数据都无法进行共享,那么我们就引入了今天的主角:ContentProvider

ContentResolver操作ContentProvider中的数据;可以使用Activity提供的getContentResolver()方法;它有四个相同签名的方法insert,update,delete,query

获取联系人信息

1. // 通过隐式意图打开通讯录
2. Intent intent =newIntent(Intent.ACTION_PICK,ContactsContract.Contacts.CONTENT_URI);
3. startActivityForResult(intent,1001);

1. // 获取选择后的返回结果
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: