Motivation Understanding Gradle is mandatory if you want to build good Android apps Bare Minimum This is the bare minimum you need to be able to compile and run an Android application: plugins { id ‘com.android.application’ id ‘kotlin-android’ } android { compileSdk 30 defaultConfig { applicationId “de.creatronix.myapplication” minSdk 21 } } dependencies { implementation ‘androidx.core:core-ktx:1.6.0’…
This article is a guest post from Caroline Riekert Motivation There are a lot of reasons to use Dependency Injection, or even a Framework for it. In this Article you’ll learn what Dependency Injection is, what benefits and downsides it has and how to use it with the usage of the Koin Framework. Let’s look…
I got the error E/AndroidRuntime: FATAL EXCEPTION: main Process: de.creatronix.levelup, PID: 17026 java.lang.RuntimeException: Unable to start activity ComponentInfo{de.creatronix.levelup/de.creatronix.levelup.MainActivity}: android.view.InflateException: Binary XML file line #18: Error inflating class fragment after enabling minification in my build. The issue is that with the usage of safeargs with custom objects we use the the @parcelize annotation which seems to…
Dependencies dependencies { implementation ‘androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0’ ViewModel class and LiveData
Stetho is a sophisticated debug bridge for Android applications. When enabled, developers have access to the Chrome Developer Tools feature natively part of the Chrome desktop browser. Developers can also choose to enable the optional dumpapp tool which offers a powerful command-line interface to application internals. Gradle implementation ‘com.facebook.stetho:stetho:1.6.0’ Initialization class PracticeTrackerApplication : Application() {…
kapt is short for Kotlin annotation processor tool. Why do I need it? tl;dr; every time you use an annotation in a Kotlin file you need to use kapt. E.g. @Parcelize in Pass custom objects via SafeArgs Prerequisites dependencies { kapt(“groupId:artifactId:version”) } plugins { kotlin(“kapt”) version “1.5.31” } Further reading https://kotlinlang.org/docs/kapt.html
Ninja is a build system which replaces the GNU make in AOSP Up to Marshmallow / 6,0 the build system was based on GNU Make In Nougat / 7.0 and later, the build is run by ninja Ninja works from a pre-processed manifest generated by kati and soong kati kati converts Android.mk files into ninja…
What a nice room! Room is an ORM which runs on Android and persists its data into an sqlite database.
import android.os.StrictMode import android.os.StrictMode.ThreadPolicy import android.os.StrictMode.VmPolicy class LevelUpApplication : Application() { override fun onCreate() { if (BuildConfig.DEBUG) { StrictMode.setThreadPolicy( ThreadPolicy.Builder() .detectDiskReads() .detectDiskWrites() .detectNetwork() .penaltyLog() .build() ) StrictMode.setVmPolicy( VmPolicy.Builder() .detectLeakedSqlLiteObjects() .detectLeakedClosableObjects() .penaltyLog() .penaltyDeath() .build() ) } super.onCreate() https://developer.android.com/reference/android/os/StrictMode
Perhaps you have code that looks like that: val mImageView = findViewById<ImageView>(R.id.img_view) mImageView.setOnClickListener(View.OnClickListener This has worked properly over the last years but what are the drawbacks? Or what are the promises of the new View Binding concept? View Binding is always null-safe and type-safe It compiles faster Gradle Enable View Binding in gradle: android {…