Latest Added Tutorials
We can use FTPClient class in apache commons library to send UTF-8 encoded file names, such as Turkish, chinese, german etc.
ftpClient = new FTPClient();
String server ="ftp.server.com";
int port = 21;
String user ="test";
String pass ="test";
ftpClient.setControlEncoding("UTF-8");//must be before connect() method
ftpClient.connect(server, port);
ftpClient.login(user, pass);
ftpClient.enterLocalPassiveMode();
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
ftpClient.sendCommand("OPTS UTF8 ON");//we should send this command...Continue Reading
We can use following class to set alarm for multiple day of weeks:
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import java.util.Calendar;
public class AlarmStartRadioHelper {
private Context mContext;
private Class<? extends BroadcastReceiver> mBroadcastReceiverClass;
private static int RQS_1 = 1002;
private String mActionName;
public AlarmStartRadioHelper(Context context, Class<? extends Broa...Continue Reading
Showing admob interstitial ads when splash screen is loaded with a timer can be implemented as follows:
package com.codesenior.admob;
import android.content.Intent;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.gms.ads.AdListener;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.InterstitialAd;
import java.util.Timer;
import java.util.TimerTask;
public class SplashActivity extends AppCompatActivity {
private InterstitialAd mInterstitialAd;
private Timer...Continue Reading
06-05-2019
Android simple GET Request:
import android.os.AsyncTask;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class HttpGetRequestTask extends AsyncTask<String, Integer, String> {
private RequestResponseHandler requestResponseHandler;
public HttpGetRequestTask(RequestResponseHandler requestResponseHandler) {
this.requestResponseHandler=requestResponseHandler;
}
protected String doInBackground(String... urls) {...Continue Reading
27-01-2019
Create a notification on Android:
String name="";
String message="";
int MID=12345;
NotificationManager notificationManager = (NotificationManager) getActivity()
.getSystemService(Context.NOTIFICATION_SERVICE);
if(notificationManager==null)return;
String NOTIFICATION_CHANNEL_ID = "step_counter_channel";
NotificationChannel mChannel;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
int importance = NotificationManager.IMPORTANCE_LOW;
mChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID,
"step_counter_channe...Continue Reading
21-01-2019
MainActivity
public class MainActivity extends AppCompatActivity implements IabBroadcastReceiver.IabBroadcastListener {
private InAppBillingHelper inappbillingHelper;
private static final int IN_APP_BILLING_REQUEST_CODE = 10001;
private static final String SKU_TEST = "android.test.purchased";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initInappBillingHelper();
btnClick.setOnClickListener(new View.OnClickListener() {
@Override
pub...Continue Reading
activity_main.xml file
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+...Continue Reading
Fragment re-created on bottom navigation view item selected Solution
private void changeFragmentForBottomNavigationView(Bundle savedInstanceState, Fragment fragment) {
// Check that the activity is using the layout version with
// the fragment_container FrameLayout
if (findViewById(R.id.fragment_container) != null) {
// However, if we're being restored from a previous state,
// then we don't need to do anything and should return or else
// we could end up with overlapping fragments.
if (savedIns...Continue Reading
21-01-2019
import android.content.Context;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.forex.stockexchange4.R;
import com.forex.stockexchange4.models.CalculateSummaryObject;
import java.util.ArrayList;
import java.util.List;
public class CalculateF...Continue Reading
Php Steps
1. Install Socialite: composer require laravel/socialite
2. Add following codes in config/services.php
'google' => [
'client_id' => env('GOOGLE_CLIENT_ID'), // Your Google Client ID
'client_secret' => env('GOOGLE_CLIENT_SECRET'), // Your Google Client Secret
'redirect' => 'http://www.codesenior.com',
],
And add GOOGLE_CLIENT_ID and GOOGLE_CLIENT_SECRET variables in .env file:
GOOGLE_CLIENT_ID=692373818685-1s057a8mja62g3i7cmj88v2spt3d8b8e.apps.googleusercontent.com
GOOGLE_CLIENT_SECRET=c-4CsKAagTYHVyPKbGVcbAsr...Continue Reading
01-11-2017
Error Message:
Error:Cause: com.android.build.gradle.tasks.factory.AndroidJavaCompile.setDependencyCacheDir(Ljava/io/File;)V
Solution: Change gradle version as follows:
buildscript {
repositories {
// Gradle 4.1 and higher include support for Google's Maven repo using
// the google() method. And you need to include this repo to download
// Android plugin 3.0.0 or higher.
google()
...
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.0'
}
}
Problem:
Error:Unable to r...Continue Reading
01-11-2017
Android GPSTracker.java
package com.su.prayertimes.util;
import android.Manifest;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.I...Continue Reading
19-08-2017
When using onesignal as notification system in Android application, we should insert following codes in ApplicationManifest.xml file:
<meta-data
android:name="com.onesignal.NotificationOpened.DEFAULT"
android:value="DISABLE" />
After adding this meta-data, Android will disable launcher activity to be opened.
Handle notification opened event as follows:
public class App extends Application {
protected boolean active = true;
protected int splashTime = 3000;
@Override
public void onCreate() {
s...Continue Reading
18-02-2017
You can use following codes to upload files with extra parameters in Android app:
public String uploadFile(String uri, String fileName) throws Exception {
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
FileInputStream fileInputStream = context.openFileInput(fileName);
URL url = new URL(uri);
// Open a HTTP connection to the URL
HttpURLConnection conn = (HttpURLConnection) url.openC...Continue Reading
Question:
1. What is the reason for setting MappedBy in bidirectional many-to-many relationships?
2. When one table has significant amount of records, while other has a few, which side is better to put mappedBy
Answer:
It's actually a good question, and it helps to understand the concept of an "owning" entity. If you want to prevent both sides (in a bidirectional relationship) from having join tables, a good idea, then you need to have a mappedBy= element on one side.
Whether or not there is a join table is controlled by the mappedBy="name" el...Continue Reading