Androd-Intent operation ContentProvider obtains the phone number

The Code is as follows:

Import android. app. activity; import android. content. contentUris; import android. content. intent; import android. database. cursor; import android.net. uri; import android. OS. bundle; import android. provider. contactsContract; import android. widget. toast; public class MyIntentContentDemo extends Activity {private static final int PICK_CONTACT_SUBACTIVITY = 1; // define the operation tag @ Overridepublic void onCreate (Bundle savedInst AnceState) {super. onCreate (savedInstanceState); super. setContentView (R. layout. main); Uri uri = Uri. parse ("content: // contacts/people"); // connect URIIntent intent = new Intent (Intent. ACTION_PICK, uri); // specifies Intentsuper. startActivityForResult (intent, PICK_CONTACT_SUBACTIVITY); // call Intent} @ Overrideprotected void onActivityResult (int requestCode, int resultCode, Intent data) {switch (requestCode) {case PICK_CO NTACT_SUBACTIVITY: // receives the returned data Uri ret = data. getData (); // UriString phoneSelection = ContactsContract. CommonDataKinds. Phone. CONTACT_ID + "=? "; // Set the query condition String [] phoneSelectionArgs = {String. valueOf (ContentUris. parseId (ret)}; // query parameter Cursor c = super. managedQuery (ContactsContract. commonDataKinds. phone. CONTENT_URI, null, phoneSelection, phoneSelectionArgs, null); // query all mobile phone numbers StringBuffer buf = new StringBuffer (); // receives all phone buckets. append ("phone number:"); for (c. moveToFirst ();! C. isAfterLast (); c. moveToNext () {// cyclically retrieve the data buf. append (c. getString (c. getColumnIndex (ContactsContract. commonDataKinds. phone. NUMBER ))). append (","); // retrieve the phone number} Toast. makeText (this, buf, Toast. LENGTH_LONG ). show (); // display information }}}

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