It’s a common requirement in Android Apps to save images as files in external storage and get a File reference from that saved location. Usually, we have images in the form of Bitmap in Android. In the following article, we will discuss how to Convert Bitmap to File in Android in both Java & Kotlin. […]
Capitalize First Letter of String in Android – Kotlin & Java
If we have a String in Kotlin or in Java in Android and we need to capitalize the first letter of the string, we don’t have any built-in method for the purpose. You can use the following methods to capitalize the first letter of String in Android in both Java & Kotlin. Capitalize First Letter […]
Get File Path From URI in Android JAVA
In Android when we pick an image, video, or any other type of file from the gallery, documents folder, or capture directly from the camera, we receive a URI object in intent. We have different ways to get a full file path from URI based on content providers. In this article, we will discuss how […]
Find Distance between 2 locations in JAVA & SWIFT
Sometimes we have to calculate the distance between 2 locations when we have coordinates latitude and longitude for those locations. This article will discuss how you can calculate a straight line distance between 2 locations 2 programming languages, JAVA & Swift. 1. Code to Find Distance in JAVA In JAVA we don’t have any builtin […]
How to Save and Load Bitmap from Cache using LruCache in Java Android
During mobile Apps development, it’s a good practice to save images in the cache for next time fast loading. Most of the time we use Image caching libraries like Fresco, Picasso, or Glide for caching when we load images from a remote URL. But we can also use Android’s native LruChache class for this purpose. […]
Pass Object from One Activity to Another using Serializable in Android – Java
Serializable is a Java Interface through which we can convert a class object into a byte stream. We can pass object from one activity to another using Serializable in Android. Although it is considered a slow method to pass data between activities as compare to Parcelable but it’s easiest to implement. In the following example, […]
Basic RecyclerView Custom Adapter in Java Android
RecyclerView is a UI component in Android to show lists & grid of items. we usually write the RecyclerView Custom Adapter to populate data to each item of the list. In the following code, I have shared a basic RecyclerView custom adapter in Java. You can just copy-paste this code in your project and modify it […]
Lint found fatal errors while assembling a release target Android
I recently found that people are struggling while generating a release APK from Android studio with the error, “Lint found fatal errors while assembling a release target”. Although their App is running successfully in Debug mode. This error happens when we have some issues in some XML files or some other issue not allowing the […]
A guide to integrating Paypal with Spring Boot application.
In this article, I am going to integrate Paypal with Java Spring Boot application. Please note I am using PayPal Checkout with Smart Payment Button https://developer.paypal.com/docs/checkout/ which is the preferred method since February 2019. You have to generate client id and secret from the PayPal developer site as well. I am using Spring MVC. So […]
Put Constant Non-editable Text in EditText Android
Sometimes we have to put constant non-editable text in EditText in Android. For example, when we have to take phone number as input we can put fix country code as a prefix. In the case of website address as input, we can put “https://” as hardcoded string at the start. For this purpose, you can […]