Androidのgradle versionを上げたら起動しなくなった

Gradle versionをポチポチと最新版に変更

gradle-7.0.2-all.zip -> gradle-7.4.2-bin.zip

distributionUrl=https://services.gradle.org/distributions/gradle-7.0.2-all.zip
-> distributionUrl=https://services.gradle.org/distributions/gradle-7.4.2-bin.zip

gradle:7.0.4 -> gradle:7.2.1

classpath 'com.android.tools.build:gradle:7.0.4'
-> classpath 'com.android.tools.build:gradle:7.2.1'

上げて動かそうとしたら。。。起動せず。

Non-fatal Exception: java.lang.RuntimeExceptionMissing type parameter.

Non-fatal Exception: java.lang.RuntimeException
Missing type parameter.
com.google.gson.reflect.TypeToken.getSuperclassTypeParameter (TypeToken.java:84)
com.google.gson.reflect.TypeToken.<init> (TypeToken.java:62)

解決方法

proguard-rules.proに下記を追加

# Retain generic signatures of TypeToken and its subclasses with R8 version 3.0 and higher.
-keep,allowobfuscation,allowshrinking class com.google.gson.reflect.TypeToken
-keep,allowobfuscation,allowshrinking class * extends com.google.gson.reflect.TypeToken

まだ　openだけど解決したIssues
https://github.com/google/gson/issues/2069