Error “package android.support.v7.app does not exist”

Question

I am new to android development, and I have been using the command line tools to create an android project. I followed all the instructions given in the tutorial at android

Answer 1

If you are using latest Android Studio, then v7 libraries contradict with AndroidX, only you have to do is:

In Project files go in gradle.properties
Find out android.useAndroidX=true then set it to android.useAndroidX=false
Find out android.enableJetifier=true then set it to android.enableJetifier=false
Rebuild your project, all will working fine.

Answer 2

I just got this error today and this is how I fixed.

• On my build output, I double click on the class with the error.
• After the class opened, I expanded the imports section and deleted existing imports with errors.
• I then hovered my mouse near the errors which were:RecyclerView,LinearLayoutManager, and FragmentTransaction and chose Alt+Enter to import appropriate classes.

Note: in my case, the error occured after I migrated one of my old projects to androidx and so imports hard to be androidx related. I am using android studio.

Note: You may run into other issues, so everytime I run into an error, I check other called classes and makes sure their imports are correct. What I do mostly is press ctrl+shift+R, and put the old import in the first field and the correct import on the second field and then replace all. This way, I replace all imports that in the project at once.

You can use ctrl+shift+f to find where imports are used.

Answer 3

For those who migrated to androidx, here is a list of mappings to new packages: https://developer.android.com/jetpack/androidx/migrate#class_mappings

Use implementation 'androidx.appcompat:appcompat:1.0.0'

Instead support library implementation 'com.android.support:appcompat-v7:28.0.0'

Answer 4

I'm a beginner but what I did for my code to work was to import androidx hence replacing the android.v7 then I erased the support.v7 line and my code worked. I'm sorry I couldn't explain in more technical terms but that's what worked for me. Actually the Java codes were codes I copied from an old tutorial hence the error encountered. Hope this helps.

Answer 5

If the issue reported from MainActivity.java then replace

import android.support.v7.app.AppCompatActivity;

with

import androidx.appcompat.app.AppCompatActivity;

Answer 6

For AndroidX implement following lib in gridle

implementation 'androidx.palette:palette:1.0.0'

and import following class in activity -

import androidx.palette.graphics.Palette;

for more info see class and mapping for AndroidX https://developer.android.com/jetpack/androidx/migrate/artifact-mappings https://developer.android.com/jetpack/androidx/migrate/class-mappings