Flutter Apk 构建警告 - shared_preferences 和 AsyncTask

Question

您好，每当我构建 apk 时，都会收到这些警告。我几乎不知道那里发生了什么。

但我认为这与我的代码无关。

我可以做些什么，还是应该暂时忽略这些警告并等待此软件包更新？

C:\Apps\flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.12+4\android\src\main\java\io\flutter\plugins\sharedpreferences\MethodCallHandlerImpl.java:9: warning: [deprecation] AsyncTask in android.os has been deprecated
import android.os.AsyncTask;
                 ^
C:\Apps\flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.12+4\android\src\main\java\io\flutter\plugins\sharedpreferences\MethodCallHandlerImpl.java:121: warning: [deprecation] AsyncTask in android.os has been deprecated
    new AsyncTask<Void, Void, Boolean>() {
        ^
C:\Apps\flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.12+4\android\src\main\java\io\flutter\plugins\sharedpreferences\MethodCallHandlerImpl.java:121: warning: [deprecation] AsyncTask() in AsyncTask has been deprecated
    new AsyncTask<Void, Void, Boolean>() {
    ^
C:\Apps\flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.12+4\android\src\main\java\io\flutter\plugins\sharedpreferences\MethodCallHandlerImpl.java:123: warning: [deprecation] doInBackground(Params...) in AsyncTask has been deprecated
      protected Boolean doInBackground(Void... voids) {
                        ^
  where Params,Result are type-variables:
    Params extends Object declared in class AsyncTask
    Result extends Object declared in class AsyncTask
C:\Apps\flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.12+4\android\src\main\java\io\flutter\plugins\sharedpreferences\MethodCallHandlerImpl.java:121: warning: [deprecation] AsyncTask() in AsyncTask has been deprecated
    new AsyncTask<Void, Void, Boolean>() {
                                         ^
C:\Apps\flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.12+4\android\src\main\java\io\flutter\plugins\sharedpreferences\MethodCallHandlerImpl.java:128: warning: [deprecation] onPostExecute(Result) in AsyncTask has been deprecated
      protected void onPostExecute(Boolean value) {
                     ^
  where Result is a type-variable:
    Result extends Object declared in class AsyncTask
C:\Apps\flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.12+4\android\src\main\java\io\flutter\plugins\sharedpreferences\MethodCallHandlerImpl.java:131: warning: [deprecation] execute(Params...) in AsyncTask has been deprecated
    }.execute();
     ^
  where Params,Progress,Result are type-variables:
    Params extends Object declared in class AsyncTask
    Progress extends Object declared in class AsyncTask
    Result extends Object declared in class AsyncTask
7 warnings

Answer 1

目前我们只能等待sharedpreference的进一步更新。如果您想抑制警告，请在 android/app/gradle 文件中将 SdkTarget 减少到 29 而不是 30。