升级Android Studio与Gradle后Snackbar显示InflateException问题求助

Hey, I’ve dealt with this exact <merge> tag-related crash when updating Android Studio and Gradle versions before—total head-scratcher at first. Let’s walk through why this is happening and how to fix it:

Why This Happens #

The crash stems from Snackbar failing to inflate its internal layout properly. Common triggers include:

• Mismatched versions between your Support Design library and other Support libraries (like AppCompat, Support-v4)
• Stale build cache leftover from the upgrade
• Custom Snackbar layouts that misuse the <merge> tag

Step-by-Step Solutions #

1. Unify All Support Library Versions #

You mentioned using com.android.support:design:27.1.1, but make sure every other Support library in your build.gradle uses the exact same version. Version mismatches are the #1 cause of this kind of layout inflation bug. Here’s how your dependencies should look:

// All support libraries share the same version
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support:design:27.1.1'
implementation 'com.android.support:support-v4:27.1.1'
// Add any other support libraries here with 27.1.1

2. Wipe Build Cache & Rebuild #

Old cached build files from your previous setup can conflict with the new Gradle/Studio versions. Do a full clean:

• Go to Build > Clean Project in Android Studio
• Then run Build > Rebuild Project
• For extra measure, manually delete the .gradle folder in your project root, plus the build folders in your project and module directories. Then sync your project again.

3. Workaround: Use the Activity Root View #

If the above doesn’t work immediately, try creating the Snackbar using your activity’s root view instead of the CoordinatorLayout (note: this loses CoordinatorLayout-specific behaviors like swipe-to-dismiss, but confirms if the issue is tied to your layout setup):

// Get the root view of the activity
View rootView = getWindow().getDecorView().findViewById(android.R.id.content);
Snackbar.make(rootView, "hello", Snackbar.LENGTH_LONG).show();

4. Check for Custom Snackbar Layouts #

If you’ve created a custom layout for Snackbar, double-check that you aren’t using <merge> as the root tag. Snackbar’s internal inflation logic doesn’t support <merge> here—wrap your custom layout in a regular ViewGroup (like LinearLayout or FrameLayout) instead.

Bonus: Try Downgrading Gradle Temporarily #

If none of the above works, it might be a compatibility quirk between Gradle 4.4 and Support Library 27.1.1. Try downgrading Gradle to version 4.1 or 4.2 (you can adjust this in your project’s gradle/wrapper/gradle-wrapper.properties file) to see if the crash goes away.

内容的提问来源于stack exchange，提问作者Farrokh Shahriari