Kotlin Extensions for simpler, easier and fun way of launching Activities in Android Reposted on my Medium profile.
Few days ago, I was reading this awesome article by Elye about a Kotlin keyword reified . Soon after reading the article, I started exploring it and I realized that we can simply lots of reusable tasks of Android development using reified and Kotlin extension methods. For example, launching Activities.
In my current project at work, I had to setup a private maven repository hosted at Artifactory. I was assigned login credentials to access the libraries (or artifacts) from the repository. But, when I was fetching it from Android Studio project through build.gradle file, I was getting this exception on syncing the project.
org.gradle.internal.resource.transport.http.HttpRequestException: Could not GET 'MY_MAVEN_ARTIFACT_URL_GOES_HERE'. Caused by: java.net.SocketTimeoutException: Read timed out at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.socketRead(SocketInputStream.java:116) at java.
Encrypt Strings Please copy the AESUtils class in your project first and then you can use it like this.
String encrypted = ""; String sourceStr = "This is any source string"; try { encrypted = AESUtils.encrypt(sourceStr); Log.d("TEST", "encrypted:" + encrypted); } catch (Exception e) { e.printStackTrace(); } Decrypt Strings Please copy the AESUtils class in your project first and then you can use it like this.
String encrypted = "ANY_ENCRYPTED_STRING_HERE"; String decrypted = ""; try { decrypted = AESUtils.
In this data-driven era of technology, almost all websites and apps have one thing in common. Thatās text validation for their data input forms and pages. This task of validating input and text before calling web services and APIs have become a routine for developers.
In Android, this sometimes become too complex and tedious to perform validations and checks on multiple EditText and TextInputLayout views. Specially, when it comes to perform multiple checks to make sure that your userās password is unbreakable and complex.
In the recent Google IO 2018 event held in May 2018, Google recommended developers to update to latest Android APIs after August 1, 2018. So, this article is a big big reminder for this announcement. > # August 1 has passed and all the new android apps on Google Play should target API Level 26 (Android Oreo) in order to be published.
But Why? Why should I update it? Well simple answer is: bossās orders.
Kotlin supports a technique called conventions, everyone should be familiar with. For example, if you define a special method plus in your class, you can use the + operator by convention: That’s called Kotlin Operator Overloading.
In this article, I want to show you which conventions you can use and I will also provide a few Kotlin code examples that demonstrate the concepts. Kotlin defines conventions that we can apply by implementing methods that comply with predefined names like plus.
When we use Fragment in our app, we often time need access to Context or Activity. We do it by calling methods such as getContext() and getActivity() methods. But, in kotlin, these methods return nullables and we end up using code like this.
fun myTempMethod() { context?.let { // Do something here regarding context } // Or we do it like this var myNonNullActivity = activity!! } For example, we need Activity in asking permissions.
