Flutter 3.24 AAPT: error: resource android:attr/lStar not found.

在Android build,gradle下面，添加右边红框的代码：

subprojects {
    afterEvaluate { project ->
        if (project.plugins.hasPlugin("com.android.application") ||
                project.plugins.hasPlugin("com.android.library")) {
            project.android {
                compileSdkVersion 34
                buildToolsVersion "34.0.0"
            }
        }
    }
}

注意要加在下面这段代码的上面一行：

subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
    project.evaluationDependsOn(':app')
}

否则会报：Cannot run Project.afterEvaluate(Closure) when the project is already evaluated.