运行项目报错如下：
Launching lib/main.dart on MHA AL00 in debug mode…
[!] Your app isn’t using AndroidX.
To avoid potential build failures, you can quickly migrate your app by following the steps on https://goo.gl/CP92wY.
Running Gradle task ‘assembleDebug’…
Compiler message:
../../../eclipseProject/flutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/cached_network_image-1.1.0/lib/src/cached_network_image_provider.dart:42:24: Error: The method ‘CachedNetworkImageProvider.load’ has fewer positional arguments than those of overridden method ‘ImageProvider.load’.
ImageStreamCompleter load(CachedNetworkImageProvider key) {
^
../../../eclipseProject/flutterSdk/flutter/packages/flutter/lib/src/painting/image_provider.dart:403:24: Context: This is the overridden method (‘load’).
ImageStreamCompleter load(T key, DecoderCallback decode);
^
Target kernel_snapshot failed: Exception: Errors during snapshot creation: null
build failed.
FAILURE: Build failed with an exception.
* Where:
Script ‘/Users/hello/Desktop/eclipseProject/flutterSdk/flutter/packages/flutter_tools/gradle/flutter.gradle’ line: 780
* What went wrong:
Execution failed for task ‘:app:compileFlutterBuildDebug’.
> Process ‘command ‘/Users/hello/Desktop/eclipseProject/flutterSdk/flutter/bin/flutter” finished with non-zero exit value 1
* Try:
Run with –stacktrace option to get the stack trace. Run with –info or –debug option to get more log output. Run with –scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 11s
Finished with error: Gradle task assembleDebug failed with exit code 1
注意标红部分，发现是由于cached_network_image版本低引起的，打开pubspec.yaml文件，修改cached_network_image版本从原来的 1.1.0修改为2.0.0-rc，然后点击Packages get 完成后，重新运行，错误日志如下:
Running “flutter pub get” in FlutterDouBan…
Because cached_network_image 2.0.0-rc depends on flutter_cache_manager ^1.1.2 and doubanapp depends on flutter_cache_manager 1.1.0, cached_network_image 2.0.0-rc is forbidden.
So, because doubanapp depends on cached_network_image 2.0.0-rc, version solving failed.
pub get failed (1; So, because doubanapp depends on cached_network_image 2.0.0-rc, version solving failed.)
Process finished with exit code 1
可以看到cached_network_image版本更新后，与flutter_cache_manager版本起冲突，并且已经提示flutter_cache_manager版本更改1.1.2就可以了，修改之后，再次点击Packages get，顺利运行，OK