com.raywenderlich.reposearch.MainActivity.java Source code

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Here is the source code for com.raywenderlich.reposearch.MainActivity.java

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/*
 * Copyright (c) 2016 Razeware LLC
 *
 * 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:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.raywenderlich.reposearch;

import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import org.json.JSONException;

import java.io.IOException;
import java.util.ArrayList;

import okhttp3.OkHttpClient;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class MainActivity extends AppCompatActivity implements DownloadCompleteListener {

    ListFragment mListFragment;
    ProgressDialog mProgressDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        if (findViewById(R.id.fragment_container) != null) {
            if (savedInstanceState != null) {
                return;
            }
            if (isNetworkConnected()) {
                mProgressDialog = new ProgressDialog(this);
                mProgressDialog.setMessage("Please wait...");
                mProgressDialog.setCancelable(false);
                mProgressDialog.show();

                startDownload();
            } else {
                new AlertDialog.Builder(this).setTitle("No Internet Connection")
                        .setMessage("It looks like your internet connection is off. Please turn it "
                                + "on and try again")
                        .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int which) {
                            }
                        }).setIcon(android.R.drawable.ic_dialog_alert).show();
            }

        }
    }

    private void showListFragment(ArrayList<Repository> repositories) {
        mListFragment = ListFragment.newInstance(repositories);
        getSupportFragmentManager().beginTransaction().add(R.id.fragment_container, mListFragment).commit();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();

        return id == R.id.action_settings || super.onOptionsItemSelected(item);

    }

    private void startDownload() {
        makeRetrofitCalls();

    }

    private boolean isNetworkConnected() {
        ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); // 1
        NetworkInfo networkInfo = connMgr.getActiveNetworkInfo(); // 2
        return networkInfo != null && networkInfo.isConnected(); // 3
    }

    private boolean isWifiConnected() {
        ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
        return networkInfo != null && (ConnectivityManager.TYPE_WIFI == networkInfo.getType())
                && networkInfo.isConnected();
    }

    @Override
    public void downloadComplete(ArrayList<Repository> repositories) {

        showListFragment(repositories);
        if (mProgressDialog != null) {
            mProgressDialog.hide();
        }

    }

    private void makeRequestWithOkHttp(String url) {
        OkHttpClient client = new OkHttpClient(); // 1
        okhttp3.Request request = new okhttp3.Request.Builder().url(url).build(); // 2

        client.newCall(request).enqueue(new okhttp3.Callback() { // 3
            @Override
            public void onFailure(okhttp3.Call call, IOException e) {
                e.printStackTrace();
            }

            @Override
            public void onResponse(okhttp3.Call call, okhttp3.Response response) throws IOException {
                final String result = response.body().string(); // 4

                MainActivity.this.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        try {
                            downloadComplete(Util.retrieveRepositoriesFromResponse(result)); // 5
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }
                });
            }
        });
    }

    private void makeRequestWithVolley(String url) {

        RequestQueue queue = Volley.newRequestQueue(this); // 1

        StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
                new com.android.volley.Response.Listener<String>() { // 2
                    @Override
                    public void onResponse(String response) {
                        try {
                            downloadComplete(Util.retrieveRepositoriesFromResponse(response)); // 3
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }
                }, new com.android.volley.Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                    }
                });
        queue.add(stringRequest); // 4

    }

    private void makeRetrofitCalls() {
        Retrofit retrofit = new Retrofit.Builder().baseUrl("https://api.github.com") // 1
                .addConverterFactory(GsonConverterFactory.create()) // 2
                .build();

        RetrofitAPI retrofitAPI = retrofit.create(RetrofitAPI.class); // 3

        Call<ArrayList<Repository>> call = retrofitAPI.retrieveRepositories(); // 4

        call.enqueue(new Callback<ArrayList<Repository>>() { // 5
            @Override
            public void onResponse(Call<ArrayList<Repository>> call, Response<ArrayList<Repository>> response) {
                downloadComplete(response.body()); // 6
            }

            @Override
            public void onFailure(Call<ArrayList<Repository>> call, Throwable t) {
                Toast.makeText(MainActivity.this, t.getLocalizedMessage(), Toast.LENGTH_SHORT).show();
            }
        });
    }

}