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当我将我的 Flutter 版本升级到 1.7.8+hotfix.3 时,我有几条错误消息。
消息如下:
Compiler message:
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/svg.dart:158:18: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'DiagnosticsNode'.
context: 'picture failed to precache',
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/picture_provider.dart:335:20: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'DiagnosticsNode'.
context: 'while resolving a picture',
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/picture_provider.dart:337:33: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable<DiagnosticsNode> Function()'.
- 'StringBuffer' is from 'dart:core'.
- 'Iterable' is from 'dart:core'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'Iterable<DiagnosticsNode> Function()'.
informationCollector: (StringBuffer information) {
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/picture_provider.dart:432:31: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable<DiagnosticsNode> Function()'.
- 'StringBuffer' is from 'dart:core'.
- 'Iterable' is from 'dart:core'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'Iterable<DiagnosticsNode> Function()'.
informationCollector: (StringBuffer information) {
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/picture_provider.dart:495:31: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable<DiagnosticsNode> Function()'.
- 'StringBuffer' is from 'dart:core'.
- 'Iterable' is from 'dart:core'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'Iterable<DiagnosticsNode> Function()'.
informationCollector: (StringBuffer information) {
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/picture_provider.dart:559:31: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable<DiagnosticsNode> Function()'.
- 'StringBuffer' is from 'dart:core'.
- 'Iterable' is from 'dart:core'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'Iterable<DiagnosticsNode> Function()'.
informationCollector: (StringBuffer information) {
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/picture_stream.dart:256:16: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'DiagnosticsNode'.
context: context,
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/picture_stream.dart:301:18: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'DiagnosticsNode'.
context: 'resolving a single-frame picture stream',
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/svg/parser_state.dart:399:35: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable<DiagnosticsNode> Function()'.
- 'StringBuffer' is from 'dart:core'.
- 'Iterable' is from 'dart:core'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'Iterable<DiagnosticsNode> Function()'.
informationCollector: (StringBuffer buff) {
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/svg/parser_state.dart:408:22: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'DiagnosticsNode'.
context: 'in _Element.clipPath',
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/svg/parser_state.dart:798:31: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable<DiagnosticsNode> Function()'.
- 'StringBuffer' is from 'dart:core'.
- 'Iterable' is from 'dart:core'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'Iterable<DiagnosticsNode> Function()'.
informationCollector: (StringBuffer buff) {
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/svg/parser_state.dart:809:18: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'DiagnosticsNode'.
context: 'in parseSvgElement',
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/utilities/errors.dart:8:32: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'DiagnosticsNode'.
context: 'in $methodName',
^
file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.12.4+1/lib/src/utilities/errors.dart:10:29: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable<DiagnosticsNode> Function()'.
- 'StringBuffer' is from 'dart:core'.
- 'Iterable' is from 'dart:core'.
- 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///C:/src/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'Iterable<DiagnosticsNode> Function()'.
informationCollector: (StringBuffer buff) {
^
FAILURE: Build failed with an exception.
* Where:
Script 'C:\src\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 665
* What went wrong:
Execution failed for task ':app:compileflutterBuildDebugX86'.
> Process 'command 'C:\src\flutter\bin\flutter.bat'' 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 41s
Gradle task assembleDebug failed with exit code 1
Exited (sigterm)
这是我的 Flutter Doctor 信息:
flutter doctor
Doctor summary (to see all details, run flutter doctor -v): [√] Flutter (Channel stable, v1.7.8+hotfix.3, on Microsoft Windows [Version 10.0.17134.885]) [!] Android toolchain - develop for Android devices (Android SDK version 28.0.3) ! Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses
[√] Android Studio (version 3.2) [!] IntelliJ IDEA Community Edition (version 2018.2) X Flutter plugin not installed; this adds Flutter specific functionality. X Dart plugin not installed; this adds Dart specific functionality. [√] VS Code (version 1.36.1)
[√] Connected device (1 available)! Doctor found issues in 2 categories.
最佳答案
在 pubspec.yaml
中将 flutter svg
版本至少更新为 0.13.0
关于flutter - 升级到 Flutter 1.7.8+hotfix.3 后无法编译,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56986017/
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