How to use addTextChangedListener to change values of other TextViews

At times, the value of one TextView is to be replicated into others as a user types the text. Below illustrates how that can be done. In class MainActivity, variable has been declared for the class as below: TextInputEditText[] array_yourinterest_rate = new TextInputEditText[12]; Within the onCreate method of MainActivity, addTextChangedListener was added to change the … Continue reading How to use addTextChangedListener to change values of other TextViews

How to include other layout xml files in a layout file in Android

Sometimes some layout files can contain too many views making it difficult to manage the layout file later. To overcome this, Android has an <include> tag that allows the inclusion of other layout files into the main layout file (in below illustration, the activity_main.xml file). <include android:id="@+id/b_layout" layout="@layout/activity_main_part_b" /> The above include statement will add … Continue reading How to include other layout xml files in a layout file in Android

How to resolve Dependency ‘androidx.appcompat:appcompat:1.4.1’ requires ‘compileSdkVersion’ to be set to 31 or higher.Compilation target for module ‘:app’ is ‘android-30’

I had the below problem when building code for an older version of Android on Android Studio. Dependency 'androidx.appcompat:appcompat:1.4.1' requires 'compileSdkVersion' to be set to 31 or higher.Compilation target for module ':app' is 'android-30' I was able to solve it by changing the version of appcompat in the dependencies What I had: implementation 'androidx.appcompat:appcompat:1.4.0' I … Continue reading How to resolve Dependency ‘androidx.appcompat:appcompat:1.4.1’ requires ‘compileSdkVersion’ to be set to 31 or higher.Compilation target for module ‘:app’ is ‘android-30’

How to mount another hard disk for sharing with other users in Linux

Sometimes, a drive needs to be shared by more than that primary user logged in on a Linux computer. This is to facilitate sharing of files and folders by other users on that computer. To enable all authorized users to work with files and folders on the shared drive, read on. Any commands need to … Continue reading How to mount another hard disk for sharing with other users in Linux

Replace FindViewByID with ViewBinding in Java on Android

In the gradle.build file for the module, add following code and Sync: buildFeatures { viewBinding true } Above automatically generates binding objects for every layout when the plugin is synced. For activity_main.xml, it will generate ActivityMainBinding class. In MainActivity.java, use inflate method on ActivityMainBinding in onCreate method as shown below: ActivityMainBinding bindMain; bindMain = ActivityMainBinding.inflate(getLayoutInflater()); … Continue reading Replace FindViewByID with ViewBinding in Java on Android

Great resources for coders or developers

All things developers and development articles can be found at https://dev.to. Best site for coders and developers https://www.freecodecamp.org. Here's a great article on one resume that was exceptional https://cloudirregular.substack.com/p/the-greatest-resume-ive-ever-seen?s=r. Learn to code for free with Google's Grasshopper app https://grasshopper.app. Get it from the Google Play Store.

How to create and use LUKS encrypted partition in Linux

It is easy to create a LUKS container and a partition within it, using the GUI on Linux. The application that enables this easily is the gnome-disk-utility. However, if you want to use the command line to set up a LUKS encrypted device, read on. Exercise appropriate caution before doing any of the below with … Continue reading How to create and use LUKS encrypted partition in Linux

How to securely wipe a hard drive or USB drive in Linux using dd or scrub

Normally we'd use dd to clean wipe a hard drive as follows after opening a terminal window for a hard disk or USB drive accessible as /dev/sdb :$ sudo dd if=/dev/urandom of=/dev/sdb status=progress <enter> Another command to do a secure wipe of /dev/sdb is scrub that can be used as follows:$ sudo scrub -p dod … Continue reading How to securely wipe a hard drive or USB drive in Linux using dd or scrub

How to enable the UEFI in VirtualBox for a Windows 10 virtual machine running on Linux

This is for those who missed checking the UEFI checkbox in the settings prior to installing Windows 10 in VirtualBox. Do the below at your own risk, take appropriate backup, First, check and confirm if BIOS Mode is Legacy, which means MBR is the partition and not GPT. To do this, press Windows+R and run:msinfo32.msc … Continue reading How to enable the UEFI in VirtualBox for a Windows 10 virtual machine running on Linux