Activity的使用(九)： 读取联系人

package com.example.androidtest;

import android.os.Bundle;
import android.app.ListActivity;
import android.view.Menu;
import android.net.Uri;
import android.provider.ContactsContract;
import android.database.Cursor;
import android.widget.SimpleCursorAdapter;
import android.util.Log;
import android.content.ContentProvider;

public class AndroidTest extends ListActivity {
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_android_test);
		
		Uri allContacts = ContactsContract.Contacts.CONTENT_URI;
		
		Cursor c = getContentResolver().query(allContacts, null, null, null, null);
		startManagingCursor(c);
		
		String[] columns = new String[]{ContactsContract.Contacts._ID, 
										ContactsContract.Contacts.DISPLAY_NAME};
		int[] views = new int[]{R.id.contactName, R.id.contactID};
		
		SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.activity_android_test, c, columns, views);
		this.setListAdapter(adapter);
		
		PrintContacts(c);
	}
	
	private void PrintContacts(Cursor c)
	{
		if (c.moveToFirst()) {
			do {
				String contactId = c.getString(c.getColumnIndex(ContactsContract.Contacts._ID));
				String contactDisplayName = c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
				Log.v("Content Providers", contactId + "," + contactDisplayName);
				int hasPhone = c.getInt(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
				if (hasPhone == 1) {
					Cursor phoneCursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, 
																	null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + contactId, 
																	null, null);
					while (phoneCursor.moveToNext()) {
						Log.v("Content Providers", phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));
					}
					phoneCursor.close();
				}
			} while (c.moveToNext());
		}
	}
	
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.android_test, menu);
		return true;
	}

	
}

需要添加权限：