com.radioyps.gcm_test.MainActivity.java Source code

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Here is the source code for com.radioyps.gcm_test.MainActivity.java

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package com.radioyps.gcm_test;
/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * 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.
 */

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.content.LocalBroadcastManager;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ImageView;
import android.widget.TextView;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.journeyapps.barcodescanner.BarcodeEncoder;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";
    private static final int PLAY_SERVICES_RESOLUTION_REQUEST = 9000;

    private BroadcastReceiver mRegistrationBroadcastReceiver;

    private TextView mStatusTextView;
    private ImageView imageView;
    private boolean isReceiverRegistered = false;

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

        mStatusTextView = (TextView) findViewById(R.id.status_info);
        imageView = (ImageView) findViewById(R.id.QrImage);

        mRegistrationBroadcastReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                Log.i(TAG, "onReceiver()>> ....");

                SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
                boolean sentToken = sharedPreferences.getBoolean(CommonConstants.PREF_IS_LOCAL_TOKEN_RECEVIED,
                        false);
                if (sentToken) {
                    mStatusTextView.setText(getString(R.string.gcm_send_message));
                    String token = sharedPreferences.getString(CommonConstants.PREF_LOCAL_TOKEN_SAVING_KEY, null);
                    if (token != null)
                        makeQRCode(token);

                } else {
                    mStatusTextView.setText(getString(R.string.token_error_message));
                }
            }
        };

        // Registering BroadcastReceiver
        registerReceiver();

        if (checkPlayServices()) {
            GCMGateWay.start("MainActivity start", this);
        }

    }

    @Override
    protected void onResume() {
        super.onResume();
        registerReceiver();
    }

    @Override
    protected void onPause() {
        LocalBroadcastManager.getInstance(this).unregisterReceiver(mRegistrationBroadcastReceiver);
        isReceiverRegistered = false;
        super.onPause();
    }

    private void registerReceiver() {
        if (!isReceiverRegistered) {
            IntentFilter msgIntentFilter = new IntentFilter(CommonConstants.LOCAL_BROADCAST_ACTION);
            msgIntentFilter.addCategory(Intent.CATEGORY_DEFAULT);
            LocalBroadcastManager.getInstance(this).registerReceiver(mRegistrationBroadcastReceiver,
                    msgIntentFilter);
            isReceiverRegistered = true;
        }
    }

    /**
     * Check the device to make sure it has the Google Play Services APK. If
     * it doesn't, display a dialog that allows users to download the APK from
     * the Google Play Store or enable it in the device's system settings.
     */
    private boolean checkPlayServices() {
        GoogleApiAvailability apiAvailability = GoogleApiAvailability.getInstance();
        int resultCode = apiAvailability.isGooglePlayServicesAvailable(this);
        if (resultCode != ConnectionResult.SUCCESS) {
            if (apiAvailability.isUserResolvableError(resultCode)) {
                apiAvailability.getErrorDialog(this, resultCode, PLAY_SERVICES_RESOLUTION_REQUEST).show();
            } else {
                Log.i(TAG, "This device is not supported.");
                finish();
            }
            return false;
        }
        return true;
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();

    }

    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        String token = null;
        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {

            Log.d(TAG, "setting pressed ");
            startActivity(new Intent(this, SettingsActivity.class));
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    private void makeQRCode(String token) {
        Log.d(TAG, "displayTokernOnScreen()>> <" + token + ">");
        MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
        try {
            BitMatrix bitMatrix = multiFormatWriter.encode(token, BarcodeFormat.QR_CODE, 200, 200);
            BarcodeEncoder barcodeEncoder = new BarcodeEncoder();
            Bitmap bitmap = barcodeEncoder.createBitmap(bitMatrix);
            imageView.setImageBitmap(bitmap);
            ;
        } catch (WriterException e) {
            e.printStackTrace();
        }

    }

}