Flutter 常见报错处理

1、

Your Flutter application is created using an older version of the Android
embedding. It is being deprecated in favor of Android embedding v2. Follow the
steps at

https://flutter.dev/go/android-project-migration

to migrate your project. You may also pass the --ignore-deprecation flag to
ignore this check and continue with the deprecated v1 embedding. However,
the v1 Android embedding will be removed in future versions of Flutter.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
The detected reason was:

  /Users/l/master/example/android/app/src/main/AndroidManifest.xml uses `android:name="io.flutter.app.FlutterApplication"`
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Build failed due to use of deprecated Android v1 embedding.

处理方法

根据路径提示找到/Users/l/master/example/android/app/src/main/AndroidManifest.xml 下的 “android:name="io.flutter.app.FlutterApplication"”然后删除即可

1662544797532.jpg

2、

Your Flutter application is created using an older version of the Android
embedding. It is being deprecated in favor of Android embedding v2. Follow the
steps at

https://flutter.dev/go/android-project-migration

to migrate your project. You may also pass the --ignore-deprecation flag to
ignore this check and continue with the deprecated v1 embedding. However,
the v1 Android embedding will be removed in future versions of Flutter.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
The detected reason was:

  No `<meta-data android:name="flutterEmbedding" android:value="2"/>` in /Users/lmaster/example/android/app/src/main/AndroidManifest.xml
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Build failed due to use of deprecated Android v1 embedding.

处理方法

根据提示的路径/Users/lmaster/example/android/app/src/main/AndroidManifest.xml 在application中添加：
<meta-data
            android:name="flutterEmbedding"
            android:value="2" />

1662544852709.jpg

3、

Cannot resolve symbol 'Properties'
Cannot resolve symbol 'GradleException'

处理方法，把new关键字删除

def localProperties = Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

1662599636451.jpg

此错误不影响运行。亦可忽略