下面这段代码放在方法中直接调用就OK。Activity

//ContactsContract.CALLER_IS_SYNCADAPTER-->表示将所有与联系人有关联的数据库都删除了		ContentResolver cResolver1=this.getContentResolver();		Uri uri4=ContactsContract.RawContacts.CONTENT_URI.buildUpon().appendQueryParameter(ContactsContract.CALLER_IS_SYNCADAPTER, "true").build();		 cResolver1.delete(uri4, null, null);