Migration To Androidx

Well, I started a migration to AndroidX from a year old project (untouched since then) and I have problems withs the resources and the gradle build. Im completely lost with the new

Solution 1:

There is an error in your activity_principal.xml. Try to change:

android:style

to

style

Also you need to add

android.useAndroidX=true

to your gradle.properties file if you want to use androidX library instead of Support Library.

Solution 2:

In AndroidStudio 3.2+ you can use Refactor | Migrate to AndroidX to upgrade a project. For more go here.

Solution 3:

I spent an entire night trying to solve this issue after the migration to androidX. Below are the few things I did for it to work:

In gradle.property:

dex.force.jumbo=trueandroid.useAndroidX=trueandroid.enableJetifier=trueandroid.enableD8=trueandroid.enableR8.libraries = falseandroid.enableR8 = false

In build.gradle:

defaultConfig {
    ...
    compileSdkVersion 28
    …
}
//Use JDK1.8 and make sure the same is well specified in your gradle file.
compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}
//Exclude Guava libraries
 ...
configurations {
    ...
    implementation.exclude group: 'com.google.guava'
}

//Make sure your firebase and google libraries are all updated
   ...
   implementation 'com.google.guava:guava:27.0.1-android'
   ...

After all these, few usual things:

• Make sure you update your gradle to the latest version (3.4.2 as of now)
• the previous action will require android Studio version 3.4 and above
• Clear your Gradle caches(use this command if on macOs rm -rf $HOME/.gradle/caches/)
• Invalidate caches and restart, ...
• The rest will be just to change few implementations that were not refactored properly.

Think all should be find after that. Hope it saves you some time.

Solution 4:

1. implementation androidx.appcompat:appcompat:1.0.0-alpha1
2. implementation androidx.constraintlayout:constraintlayout:1.1.2

Solution 5:

Nice, I changed both implementations and added the androix=true to the property file. The build gradle thing is not throwing errors anymore (I think) But my layouts are not visible on the design view

IMAGE OF THE PROBLEM

And this:

IMAGE OF THE PROBLEM 2