com.packpublishing.asynchronousandroid.chapter4.PhoneListActivityRV.java Source code

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Here is the source code for com.packpublishing.asynchronousandroid.chapter4.PhoneListActivityRV.java

Source

/*
 *  This code is part of "Asynchronous Android Programming".
 *
 *  Copyright (C) 2016 Helder Vasconcelos (heldervasc@bearstouch.com)
 *  Copyright (C) 2016 Packt Publishing
 *
 *  Permission is hereby granted, free of charge, to any person obtaining
 *  a copy of this software and associated documentation files (the
 *  "Software"), to deal in the Software without restriction, including
 *  without limitation the rights to use, copy, modify, merge, publish,
 *  distribute, sublicense, and/or sell copies of the Software, and to
 *  permit persons to whom the Software is furnished to do so, subject to
 *  the following conditions:
 *  
 */
package com.packpublishing.asynchronousandroid.chapter4;

import android.database.Cursor;
import android.os.Bundle;
import android.provider.BaseColumns;
import android.provider.ContactsContract;
import android.support.v4.app.FragmentActivity;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;

public class PhoneListActivityRV extends FragmentActivity
        implements android.support.v4.app.LoaderManager.LoaderCallbacks<Cursor> {

    public static final int PHONE_LIST_LOADER = "phone_list".hashCode();
    private RecyclerView mRecyclerView;
    private RecyclerView.LayoutManager mLayoutManager;
    private RecyclerView.Adapter mAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.phone_list_layout_rv);
        mRecyclerView = (RecyclerView) findViewById(R.id.phone_list);

        // use this setting to improve performance if you know that changes
        // in content do not change the layout size of the RecyclerView
        mRecyclerView.setHasFixedSize(true);

        // use a linear layout manager
        mLayoutManager = new LinearLayoutManager(this);
        mRecyclerView.setLayoutManager(mLayoutManager);
        getSupportLoaderManager().initLoader(PHONE_LIST_LOADER, null, PhoneListActivityRV.this);
    }

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle args) {

        String[] columns = new String[] { BaseColumns._ID, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
                ContactsContract.CommonDataKinds.Phone.NUMBER };

        return new CursorLoader(this, ContactsContract.CommonDataKinds.Phone.CONTENT_URI, columns, // projection
                null, // selection
                null, // selectionArgs
                null // sortOrder
        );
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
        mAdapter = new ContactListAdapter(data);
        mRecyclerView.setAdapter(mAdapter);
    }

    @Override
    public void onLoaderReset(Loader<Cursor> loader) {
        mRecyclerView.setAdapter(mAdapter);
    }

}