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Simple AndroidX Migration Script
#!/usr/bin/env bash
# I've found that the "Migrate to AndroidX" converter in Android Studio doesn't work very
# well, so I wrote my own script to do the simple job of converting package names.
#
# You can download a CSV of package names here: https://developer.android.com/topic/libraries/support-library/downloads/androidx-class-mapping.csv
#
# It'll run faster on a clean build because then there are fewer files to scan over.
#
# Uses `gsed` because I'm on a Mac. Can easily replace with `sed` if you don't have `gsed`.
#
# This isn't perfect; it won't find every conversion issue. You break it you buy it. Viewer discretion is advised.
MAPPING_FILE=path/to/androidx-class-mapping.csv
PROJECT_DIR=path/to/android/project
replace=""
while IFS=, read -r from to
do
replace+="; s/$from/$to/g"
done <<< "$(cat $MAPPING_FILE)"
find $PROJECT_DIR \( -name "*.kt" -o -name "*.java" -o -name "*.xml" \) -type f -not -path '*/\.git*' -print0 | xargs -0 gsed -i "$replace"
@matthewcmckenna

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matthewcmckenna commented Nov 14, 2018

Thanks for this!

@cmargonis

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cmargonis commented Nov 15, 2018

Thank you!

@ondrej23

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ondrej23 commented Nov 20, 2018

Great job, thanks a lot!

@vashisthg

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vashisthg commented Nov 21, 2018

Thanks Dan Leu
We can add

android.support.design.widget.FloatingActionButton,com.google.android.material.floatingactionbutton.FloatingActionButton
android.support.design.widget.AppBarLayout,com.google.android.material.appbar.AppBarLayout

to the csv if using AppBarLayout and FloatingActionButton

@lwasylkowski

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lwasylkowski commented Nov 27, 2018

Some more missing classes:

android.support.design.widget.Snackbar,com.google.android.material.snackbar.Snackbar
android.support.design.widget.BottomSheetBehavior,com.google.android.material.bottomsheet.BottomSheetBehavior
android.support.design.widget.TextInputEditText,com.google.android.material.textfield.TextInputEditText
android.support.design.widget.TextInputLayout,com.google.android.material.textfield.TextInputLayout
@Kisty

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Kisty commented Nov 28, 2018

Thanks for this, Dan!

Android relevant issue for missing mappings: https://issuetracker.google.com/issues/119776865

@AndiMiko

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AndiMiko commented Feb 8, 2019

This string doesn't work on windows 10 or Linux. "xargs: Argument list too long" even with just few files

@AndiMiko

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AndiMiko commented Feb 9, 2019

I wrote a python script which can be used cross-platform in case you have the same issue: https://gist.github.com/AndiMiko/58ecc04a64ac4f89eb5262176ab3fc9e

@carstenhag

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carstenhag commented Feb 21, 2019

On Mac run: brew install gnu-sed to get gsed.

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