Android Development Implementation method to delete contact call records _android

This article describes the Android Development implementation method for removing contact call records. Share to everyone for your reference, specific as follows:

1. The source of the content provider responsible for storing call records is under the Contactsprovider project:
Source path:

Com/android/providers/contacts/calllogprovider.java

The databases that are used are:

/data/data/com.android.providers.contacts/databases/contacts2.db

Table name: Calls

There are three types of call logs:

Caller: CallLog.Calls.INCOMING_TYPE (constant value: 1)

Dialed: CallLog.Calls.OUTGOING_TYPE (constant value: 2)

Not answered: CallLog.Calls.MISSED_TYPE (constant value: 3)

View the declaration in the source code:

<provider android:name= "Calllogprovider"
  android:authorities= "Call_log"
  android:syncable= "false" Android:multiprocess= "false"
  android:readpermission= "Android.permission.READ_CONTACTS"
  android: writepermission= "Android.permission.WRITE_CONTACTS" >
</provider>

2. Permissions that need to be declared

<uses-permission android:name= "Android.permission.READ_CONTACTS"/>
<uses-permission android:name= " Android.permission.WRITE_CONTACTS "/>

3. The system's call records, is through the contentprovider to share externally

4. Uri

CallLog.Calls.CONTENT_URI: Equivalent to: Uri.parse ("Content://call_log/calls");

5. Check out all records

Contentresolver resolver = Getcontentresolver ();
Resolver.query (CallLog.Calls.CONTENT_URI, NULL, NULL, new string[]{"15101689022"}, NULL);

6. Check all records of a contact (by phone number)

Copy Code code as follows:

Resolver.query (CallLog.Calls.CONTENT_URI, NULL, "number=", New string[]{"15101689022"}, NULL);

7. Check all outstanding phone records for a contact (by phone number)

Copy Code code as follows:

Resolver.query (CallLog.Calls.CONTENT_URI, NULL, "Number=?") and type=3 ", New string[]{" 15101689022 "}, NULL);

8. Delete a contact's last call

/* This code can call Getcontentresolver () directly because it is in the activity. This method is actually defined in the context. * *
Contentresolver resolver = Getcontentresolver ();
/* Here is the knowledge of content providers, in fact, here is directly in the operation of the Android database, very painful * * *
Cursor Cursor = Resolver.query (CallLog.Calls.CONTENT_URI, new string[]{"_id"}, "Number=?" and (type=1 or type=3) ", New string[]{" 15101689022 "}," _id desc, limit 1 ");
if (Cursor.movetofirst ()) {
  int id = cursor.getint (0);
  Resolver.delete (CallLog.Calls.CONTENT_URI, "_id=", new string[] {id + ""});

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I hope this article will help you with the Android program.