material-components-android: [Snackbar] InflateException thrown on obfuscated builds

Description: With ProGuard enabled (minifyEnabled and shrinkResources both true), the Snackbar component crashes with the following exception:

android.view.InflateException: Binary XML file line #1 in my.package.name:layout/mtrl_layout_snackbar_include: Binary XML file line #1 in my.package.name:layout/mtrl_layout_snackbar_include: Error inflating class x
    Caused by: android.view.InflateException: Binary XML file line #1 in my.package.name:layout/mtrl_layout_snackbar_include: Error inflating class x
    Caused by: java.lang.ClassNotFoundException: android.view.x
        at java.lang.Class.classForName(Native Method)
        at java.lang.Class.forName(Class.java:454)
        at android.view.LayoutInflater.createView(LayoutInflater.java:815)
        at android.view.LayoutInflater.createView(LayoutInflater.java:776)
        at android.view.LayoutInflater.onCreateView(LayoutInflater.java:913)
        at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:68)
        at android.view.LayoutInflater.onCreateView(LayoutInflater.java:930)
        at android.view.LayoutInflater.onCreateView(LayoutInflater.java:950)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1004)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:961)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:659)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:534)

Expected behavior: Showing a Snackbar should not crash.

Source code: Snackbar.make(view, "text", Snackbar.LENGTH_SHORT).show()

Android API version: 28, 29

Material Library version: The issue is present both in “1.3.0-alpha03” and “1.2.1”.

Device: Samsung Galaxy Note 10+, Google Pixel 3, OnePlus 5

About this issue

Original URL
State: closed
Created 4 years ago
Comments: 19 (2 by maintainers)

Commits related to this issue

Fixed InflateException Changed Gradle plugin from 7.0.0-alpha02 to 4.0.1 https://github.com/material-components/material-components-android/issues/1814 — committed to giacomoferretti/odex-patcher by deleted user 4 years ago

Most upvoted comments

Adding this to your proguard-rules.pro should fix the issue: -keep class com.google.android.material.snackbar.** { *; }

Maybe can be broken down to be more precise.

Tested with Gradle Plugin 7.0.0-alpha03

giacomoferretti on Dec 20, 2020

Seems this is an issue on the R8 side: https://issuetracker.google.com/issues/174167294

xizzhu on Feb 19, 2021

For me it is crashing in release if I have minify enabled, even if the proguard file has the -dontobfuscate rule.

But if I try to debug it (isDebuggable = true) the app stop crashing.

Using plugin 4.1.1 Temporarily fixed downgrading to 4.0.1

msesma on Dec 8, 2020

Still crashing for me with plugin 4.2.0-beta01. Maybe some other configuration issue is interfering on my side, I’ll give it a try on a brand new project.

pandulapeter on Dec 5, 2020

Ran into this same issue. We worked around it for now by reverting to Gradle 6.1.1 and the 4.0.1 Android Gradle Plugin.

orionthewake on Nov 3, 2020