为什么我不能导入 Snackbar 类

Question

I can't import this: android.support.design.widget.Snackbar;

The result is: The import android.support.design cannot be resolved

Answer 1

You have to import the right library into your build.gradle.

If you are using the "normal" android library add this implementation:

implementation 'com.android.support:design:28.0.0'

and this is the import statement:

import android.support.design.widget.Snackbar;

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If you are using the AndroidX library add this implementation:

implementation 'com.google.android.material:material:1.0.0'

and this is the import statement:

import com.google.android.material.snackbar.Snackbar;