MDC-101: Material Components (MDC) Basics (Flutter)

[cjbyrne772]

Attempt to download and build MDC 101 Starter Project. 2 problems ( 1) is probably not important, 2) is a show stopper.

1. Directions (item 4) says
   4. In the project panel on the left, delete the testing file ../test/widget_test.dart
   file is not found

2. Project does not build. Cannot find mips64el-linux-android in the toolchain
   ==============================================================

When I follow instructions on https://codelabs.developers.google.com/codelabs/mdc-101-flutter/index.html?index=..%2F..index#2
and use the “Download Starter Project” option, Android Studio shows me this:

which indicates a problem:
Dart support is not enabled…
I click on ‘Enable Dart support’ that seems to fix the problem, but now I get:

So ‘Packages get’ has not been run. I run it by clicking on ‘Get dependencies’ and I get this:

So it looks good…...Let’s delete that test file
4. In the project panel on the left, delete the testing file ../test/widget_test.dart

….Can’t find widget_test.*

Attempt to build project:
Get the following error:

Launching lib\main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...
Resolving dependencies...

• Error running Gradle:
  ProcessException: Process "C:\etc\prj\material-components-flutter-codelabs-101-starter\material-components-flutter-codelabs-101-starter\mdc_100_series\android\gradlew.bat" exited abnormally:
  Starting a Gradle Daemon (subsequent builds will be faster)

FAILURE: Build failed with an exception.

• Where:
  Build file 'C:\etc\prj\material-components-flutter-codelabs-101-starter\material-components-flutter-codelabs-101-starter\mdc_100_series\android\build.gradle' line: 24

• What went wrong:
  A problem occurred evaluating root project 'android'.

A problem occurred configuring project ':app'.
No toolchains found in the NDK toolchains folder for ABI with prefix: mips64el-linux-android

[willlarche]

Thank you! I've corrected the document to make deleting the testing file something you do if you see it. I'm not sure why some people do and others don't.

Can you upgrade your flutter (flutter upgrade) and try again? Also, did you call flutter create mdc_100_series?

[epool]

I fixed it by upgrading the android gradle plugin(3.0.1 => 3.2.1) along with the gradle wrapper version(4.1 => 4.10.2).

Index: mdc_100_series/android/build.gradle
===================================================================
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.2.1'
     }
 }

 
Index: mdc_100_series/android/gradle/wrapper/gradle-wrapper.properties
===================================================================
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip