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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.basiccontactables;
import android.app.Activity;
import android.app.LoaderManager;
import android.content.Context;
import android.content.CursorLoader;
import android.content.Loader;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract.CommonDataKinds;
import android.util.Log;
import android.widget.TextView;
/**
* Helper class to handle all the callbacks that occur when interacting with loaders. Most of the
* interesting code in this sample app will be in this file.
*/
public class ContactablesLoaderCallbacks implements LoaderManager.LoaderCallbacks<Cursor> {
Context mContext;
public static final String QUERY_KEY = "query";
public static final String TAG = "ContactablesLoaderCallbacks";
public ContactablesLoaderCallbacks(Context context) {
mContext = context;
}
@Override
public Loader<Cursor> onCreateLoader(int loaderIndex, Bundle args) {
// Where the Contactables table excels is matching text queries,
// not just data dumps from Contacts db. One search term is used to query
// display name, email address and phone number. In this case, the query was extracted
// from an incoming intent in the handleIntent() method, via the
// intent.getStringExtra() method.
// BEGIN_INCLUDE(uri_with_query)
String query = args.getString(QUERY_KEY);
Uri uri = Uri.withAppendedPath(
CommonDataKinds.Contactables.CONTENT_FILTER_URI, query);
// END_INCLUDE(uri_with_query)
// BEGIN_INCLUDE(cursor_loader)
// Easy way to limit the query to contacts with phone numbers.
String selection =
CommonDataKinds.Contactables.HAS_PHONE_NUMBER + " = " + 1;
// Sort results such that rows for the same contact stay together.
String sortBy = CommonDataKinds.Contactables.LOOKUP_KEY;
return new CursorLoader(
mContext, // Context
uri, // URI representing the table/resource to be queried
null, // projection - the list of columns to return. Null means "all"
selection, // selection - Which rows to return (condition rows must match)
null, // selection args - can be provided separately and subbed into selection.
sortBy); // string specifying sort order
// END_INCLUDE(cursor_loader)
}
@Override
public void onLoadFinished(Loader<Cursor> arg0, Cursor cursor) {
TextView tv = (TextView) ((Activity)mContext).findViewById(R.id.sample_output);
if(tv == null) {
Log.e(TAG, "TextView is null?!");
} else if (mContext == null) {
Log.e(TAG, "Context is null?");
} else {
Log.e(TAG, "Nothing is null?!");
}
// Reset text in case of a previous query
tv.setText(mContext.getText(R.string.intro_message) + "\n\n");
if (cursor.getCount() == 0) {
return;
}
// Pulling the relevant value from the cursor requires knowing the column index to pull
// it from.
// BEGIN_INCLUDE(get_columns)
int phoneColumnIndex = cursor.getColumnIndex(CommonDataKinds.Phone.NUMBER);
int emailColumnIndex = cursor.getColumnIndex(CommonDataKinds.Email.ADDRESS);
int nameColumnIndex = cursor.getColumnIndex(CommonDataKinds.Contactables.DISPLAY_NAME);
int lookupColumnIndex = cursor.getColumnIndex(CommonDataKinds.Contactables.LOOKUP_KEY);
int typeColumnIndex = cursor.getColumnIndex(CommonDataKinds.Contactables.MIMETYPE);
// END_INCLUDE(get_columns)
cursor.moveToFirst();
// Lookup key is the easiest way to verify a row of data is for the same
// contact as the previous row.
String lookupKey = "";
do {
// BEGIN_INCLUDE(lookup_key)
String currentLookupKey = cursor.getString(lookupColumnIndex);
if (!lookupKey.equals(currentLookupKey)) {
String displayName = cursor.getString(nameColumnIndex);
tv.append(displayName + "\n");
lookupKey = currentLookupKey;
}
// END_INCLUDE(lookup_key)
// BEGIN_INCLUDE(retrieve_data)
// The data type can be determined using the mime type column.
String mimeType = cursor.getString(typeColumnIndex);
if (mimeType.equals(CommonDataKinds.Phone.CONTENT_ITEM_TYPE)) {
tv.append("\tPhone Number: " + cursor.getString(phoneColumnIndex) + "\n");
} else if (mimeType.equals(CommonDataKinds.Email.CONTENT_ITEM_TYPE)) {
tv.append("\tEmail Address: " + cursor.getString(emailColumnIndex) + "\n");
}
// END_INCLUDE(retrieve_data)
// Look at DDMS to see all the columns returned by a query to Contactables.
// Behold, the firehose!
for(String column : cursor.getColumnNames()) {
Log.d(TAG, column + column + ": " +
cursor.getString(cursor.getColumnIndex(column)) + "\n");
}
} while (cursor.moveToNext());
}
@Override
public void onLoaderReset(Loader<Cursor> cursorLoader) {
}
}
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