我不知道我的Flutter怎么了，收到此错误：
Launching lib\main.dart on NOTE 5 in debug mode...
Initializing gradle... 20.2s
Resolving dependencies... 149.7s (!)
Running Gradle task 'assembleDebug'...
Note: C:\flutter\.pub-cache\hosted\pub.dartlang.org\cloud_firestore-0.12.11\android\src\main\java\io\flutter\plugins\firebase\cloudfirestore\CloudFirestorePlugin.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: C:\flutter\.pub-cache\hosted\pub.dartlang.org\cloud_firestore-0.12.11\android\src\main\java\io\flutter\plugins\firebase\cloudfirestore\CloudFirestorePlugin.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:15: error: package android.support.annotation does not exist
import android.support.annotation.VisibleForTesting;
^
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:16: error: cannot find symbol
import android.support.v4.app.ActivityCompat;
^
symbol: class ActivityCompat
location: package android.support.v4.app
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:17: error: package android.support.v4.content does not exist
import android.support.v4.content.FileProvider;
^
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerFileProvider.java:3: error: package android.support.v4.content does not exist
import android.support.v4.content.FileProvider;
^
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerFileProvider.java:10: error: cannot find symbol
public class ImagePickerFileProvider extends FileProvider {}
^
symbol: class FileProvider
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerPlugin.java:8: error: package android.support.annotation does not exist
import android.support.annotation.VisibleForTesting;
^
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:68: error: cannot find symbol
@VisibleForTesting static final int REQUEST_CODE_CHOOSE_IMAGE_FROM_GALLERY = 2342;
^
symbol: class VisibleForTesting
location: class ImagePickerDelegate
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:69: error: cannot find symbol
@VisibleForTesting static final int REQUEST_CODE_TAKE_IMAGE_WITH_CAMERA = 2343;
^
symbol: class VisibleForTesting
location: class ImagePickerDelegate
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:70: error: cannot find symbol
@VisibleForTesting static final int REQUEST_EXTERNAL_IMAGE_STORAGE_PERMISSION = 2344;
^
symbol: class VisibleForTesting
location: class ImagePickerDelegate
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:71: error: cannot find symbol
@VisibleForTesting static final int REQUEST_CAMERA_IMAGE_PERMISSION = 2345;
^
symbol: class VisibleForTesting
location: class ImagePickerDelegate
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:72: error: cannot find symbol
@VisibleForTesting static final int REQUEST_CODE_CHOOSE_VIDEO_FROM_GALLERY = 2352;
^
symbol: class VisibleForTesting
location: class ImagePickerDelegate
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:73: error: cannot find symbol
@VisibleForTesting static final int REQUEST_CODE_TAKE_VIDEO_WITH_CAMERA = 2353;
^
symbol: class VisibleForTesting
location: class ImagePickerDelegate
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:74: error: cannot find symbol
@VisibleForTesting static final int REQUEST_EXTERNAL_VIDEO_STORAGE_PERMISSION = 2354;
^
symbol: class VisibleForTesting
location: class ImagePickerDelegate
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:75: error: cannot find symbol
@VisibleForTesting static final int REQUEST_CAMERA_VIDEO_PERMISSION = 2355;
^
symbol: class VisibleForTesting
location: class ImagePickerDelegate
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:77: error: cannot find symbol
@VisibleForTesting final String fileProviderName;
^
symbol: class VisibleForTesting
location: class ImagePickerDelegate
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:164: error: cannot find symbol
@VisibleForTesting
^
symbol: class VisibleForTesting
location: class ImagePickerDelegate
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerPlugin.java:40: error: cannot find symbol
@VisibleForTesting
^
symbol: class VisibleForTesting
location: class ImagePickerPlugin
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:122: error: cannot find symbol
return ActivityCompat.checkSelfPermission(activity, permissionName)
^
symbol: variable ActivityCompat
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:128: error: cannot find symbol
ActivityCompat.requestPermissions(activity, new String[] {permissionName}, requestCode);
^
symbol: variable ActivityCompat
C:\flutter\.pub-cache\hosted\pub.dartlang.org\image_picker-0.4.12+1\android\src\main\java\io\flutter\plugins\imagepicker\ImagePickerDelegate.java:140: error: cannot find symbol
return FileProvider.getUriForFile(activity, fileProviderName, file);
^
symbol: variable FileProvider
20 errors
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':image_picker:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.
* 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 4m 35s
Running Gradle task 'assembleDebug'... 287.0s (!)
*******************************************************************************************
The Gradle failure may have been because of AndroidX incompatibilities in this Flutter app.
See for more information on the problem and how to fix it.
*******************************************************************************************
Gradle task assembleDebug failed with exit code 1
答案 0 :(得分：0)
最后一个错误说：
The Gradle failure may have been because of AndroidX incompatibilities in this Flutter app. See for more information on the problem and how to fix it.
您需要将Android模块迁移到AndroidX。现在，大多数浮动依赖项都是使用AndroidX构建的，因此您最好也升级项目。
在Android Studio或IntelliJ中，您可以通过访问菜单重构->迁移到AndroidX进行迁移...
答案 1 :(得分：0)
通过将image_picker版本更改为image_picker：^ 0.6.0 + 9