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1, Foreword Although ViewModel has helped us deal with the data retention problem caused by page destruction and reconstruction caused by screen rotation, the data is not saved for page destruction and reconstruction caused by insufficient memory. This article mainly makes a unified improvement and arrangement according to the official doc ...

Introduction to ComposeJetpack Compose is a new library released at the 2019 Google I/O conference until release version 1.0 is released in July 2021 0 It features less KotlinCode, more convenient to complete UI development on Android platform.Why compositeJetpack Compose is Android's modern toolkit for building native UI. It simplifies and acc ...

LifeCycle LifeCycle is a component provided by Jetpack that can sense the life cycle changes of an Activity or Fragment. This component is convenient for business to make corresponding management and changes according to the changes of business life cycle, and can also prevent business memory leakage. First, understand the following concepts ...

Jetpack Compose is a new library released by Google at the 2009 Google I / O conference. It is a modern toolkit for building native Android UI. It has powerful tools and intuitive Kotlin API to simplify and accelerate UI development on Android. It can help developers create views with less and more intuitive code, have more powerful functions, ...

preface This article will explain the usage of Button, iconbutton, extendedfloatingactionbutton, floatingactionbutton, icontogglebutton, outlinebutton, RadioButton and textbutton in detail. Please read below if you are interested 1: Button usage Let's take a look at the source code of the Button (the OutlinedButton has the same properties a ...

LiveData introduction LivaData is a observable data container class. Specifically, LiveData can be understood as a data container, which packages the data and makes the data become an observer. When the data changes, the observer can be notified. Unlike regular observable classes, LiveData can perceive the life cycle of activities, fragments, ...

1. Bridge between view and data model When the function of the page (Activity/Fragment) is relatively simple, we usually write all the business logic related to UI interaction and data acquisition in the page. However, in the case of complex page functions, the amount of code will change very much, which also violates the "single function ...