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Android back pressed to exit the app dialog and exit app

Android back pressed to exit the app dialog and exit app

@Override public void onBackPressed() { super.onBackPressed(); AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this); alertDialogBuilder.setMessage(“Are you sure you want to exit the app?”); alertDialogBuilder.setPositiveButton(“yes”, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface arg0, int arg1) { Intent intent = new Intent(Intent.ACTION_MAIN); intent.addCategory(Intent.CATEGORY_HOME); intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NO_HISTORY); startActivity(intent); finishAffinity(); finish(); System.exit(0); } }); alertDialogBuilder.setNegativeButton(“No”, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { finish(); } }); AlertDialog alertDialog = alertDialogBuilder.create(); alertDialog.show(); }

Firebase for android – Insert value as a list data

Firebase for android – Insert value as a list data

Part : one – Go to firebase console and click database . If you want to insert database without authentication then go to database->rules tab and { “rules”: { “.read”: “auth == null”, “.write”: “auth == null” } } Part 2 : Create Model . I used Notes Model /** * Created by ADN Digital on 12/24/2017. */ public class Notes { public String id; public String title; public String description; public String date; public String day; public String currentDate; public…

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Binary Search Algorithm – Deep thinking with Java

Binary Search Algorithm – Deep thinking with Java

import java.util.Scanner;   class BinarySearch { public static void main(String args[]) { int c, first, last, middle, n, search, array[];   Scanner in = new Scanner(System.in); System.out.println(“Enter number of elements”); n = in.nextInt(); array = new int[n];   System.out.println(“Enter ” + n + ” integers”);     for (c = 0; c < n; c++) array = in.nextInt();   System.out.println(“Enter value to find”); search = in.nextInt();   first = 0; last = n – 1; middle = (first + last)/2;…

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IOS application development with swift : Part-1 download xCode and environment setup

IOS application development with swift : Part-1 download xCode and environment setup

It’s easy if you have a Mac book . But before to be a iOS application developer you need to have mac and iPhone for debug application but you can also use simulator for debug purpose . Let’s start for environment setup –   1 . First Download xCode from https://developer.apple.com/xcode/ 2 . You need an apple account to download this . 3 . After downloading just double click to install it . 4 . After successfully installed open it ….

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Trick : How to upgrade android gradle version from lower to higher or vice-versa

Trick : How to upgrade android gradle version from lower to higher or vice-versa

1 . It’s easy just create an new dummy app as like test_app . 2. Go the build.gradle and copy and replace the following code   apply plugin: ‘com.android.application’ android { compileSdkVersion 26 defaultConfig { applicationId “com.adndigitalbd.test” minSdkVersion 16 targetSdkVersion 26 versionCode 1 versionName “1.0” testInstrumentationRunner “android.support.test.runner.AndroidJUnitRunner” } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile(‘proguard-android.txt’), ‘proguard-rules.pro’ } } } dependencies { implementation fileTree(dir: ‘libs’, include: [‘*.jar’]) implementation ‘com.android.support:appcompat-v7:26.1.0’ implementation ‘com.android.support.constraint:constraint-layout:1.0.2’ implementation ‘com.android.support:design:26.1.0’ testImplementation ‘junit:junit:4.12’ androidTestImplementation ‘com.android.support.test:runner:1.0.1’ androidTestImplementation ‘com.android.support.test.espresso:espresso-core:3.0.1’ }…

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!] Unable to add a source with url `https://github.com/CocoaPods/Specs.git` named `master-1`. You can try adding it manually in `~/.cocoapods/repos` or via `pod repo add`.

!] Unable to add a source with url `https://github.com/CocoaPods/Specs.git` named `master-1`. You can try adding it manually in `~/.cocoapods/repos` or via `pod repo add`.

Open Terminal and run this command that will add the source on master branch on cocoapod repos .   $ cd ~/.cocoapods/repos $ git clone https://github.com/CocoaPods/Specs.git master     if again issuing already has master branch and it’s not empty and completely remove cocoapod and install from new . How to uninstall cocoapod completely and install new