Flutter run error : You have not accepted the license agreements

I'm developing android and ios app with Google flutter.
when I add a new dependency like shared_preferences to pubspec.yaml and then execute flutter run in terminal, I got this error:

• What went wrong: A problem occurred configuring project ':shared_preferences'.
  You have not accepted the license agreements of the following SDK components: [Android SDK Platform 27].

I know why it happens! because the latest Android SDK platform on my system is 26 . it trys to download sdk 27 and then fails. no problem! I go to library cached folder which located here :

C:\Users...\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\shared_preferences-0.3.1\android

and edit build.gradle file and change compileSdkVersion 27 to compileSdkVersion 26. it works.
so far I have to do this for all new dependencies,
Is there any way such as defining a global build.gradle file for all dependencies? so no need to edit each buil.gradles individually.

try these:

1. Open your terminal
2. type flutter doctor --android-licenses
3. press y to accept every license.

This worked for me to solve the problem,

1. Open android studio(close project if any is open) >> Configure >> Appearance & Behavior >> Android SDK
2. Go to SDK Tools tab
3. Install Android SDK Command-line Tools (latest)
4. Open cmd and run yes | flutter doctor --android-licenses.

Then open the cmd and run flutter doctor

I think is a little late to answer this question, but I think this can be useful for those who are starting in Flutter like me.

In my case (at my machine), I've executed the steps below:

1. Execute command prompt as administrator.
2. Run the command flutter doctor --android-licenses and accept all licenses.
3. Run the command flutter doctor -v to check if the issue was solved.
4. To make sure that is everything is ok, execute the command prompt as a regular user (your user) and execute flutter doctor -v again.

For me, flutter doctor --android-licenses didn't work for some reason.

The only command that worked & solved the issue was:

(your android_sdk folder exact path)\tools\bin\sdkmanager --licenses