Build an intent An Intent is an object that provides runtime binding between separate components, such as two activities. The Intent represents an app’s intent to do something. You can use intents for a wide variety of tasks, but in this lesson, your intent starts another activity. In MainActivity, add the EXTRA_MESSAGE constant and the …
Question Mark in Kotlin
While I am learning Kotlin, I notice some variables appended by a question mark. It is not common in other programming languages, so I do some search and got answer from Google. In Kotlin, programmer could express nullability explicitly in the type of a variable. By appending a question mark to the type, we let …
Setting Up Firebase For Android Studio Project
1. Go to Firebase and sign in. Click "go to console" on the right top corner and Add project. 2. Then we could add Firebase to our Android App. 3. Follow the instruction and add necessary codes, then we can go to the project.
Setting Up Parse Server On AWS
Parse Platform is an Open Source Project which could help people develop and manage the back-end of their personal project. I will make a note about how to set up a parse server on Amazon AWS. 1.Sign up an AWS account and log in. 2.Access the AWS dashboard and find EC2 under Computer from Service …