Flutter：IOS 无法为设备构建预编译的应用程序 2021答案

【问题标题】：Flutter: IOS Could not build the precompiled application for the device 2021Flutter：IOS 无法为设备构建预编译的应用程序 2021
【发布时间】：2021-05-05 13:22:41
【问题描述】：

正在以调试模式在 Kingman 的 iPhone 上启动 lib/main_dev.dart... 在 Xcode 项目中使用指定开发团队自动签署 iOS 进行设备部署：FK3FA23S5A 运行 Xcode 构建... 由于并发构建，Xcode 构建失败，将在 2 秒后重试。 Xcode 构建完成。 134.1s 无法构建 iOS 应用 Xcode 构建的错误输出：

↳
    ** BUILD FAILED **


Xcode's output:
↳
    /Users/kingman/Documents/development/flutter/.pub-cache/hosted/pub.dartlang.org/image_picker-0.6.7+12/ios/Classes/FLTImagePickerPlugin.m:149:20: warning: 'UIAlertView' is deprecated: first deprecated in iOS 9.0 - UIAlertView is deprecated. Use UIAlertController with a preferredStyle of UIAlertControllerStyleAlert instead [-Wdeprecated-declarations]
        [[[UIAlertView alloc] initWithTitle:@"Error"
                       ^
    In module 'UIKit' imported from /Users/kingman/Desktop/HLH/projects/ios/Pods/Target Support Files/image_picker/image_picker-prefix.pch:2:
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS14.4.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIAlertView.h:27:12: note: 'UIAlertView' has been explicitly marked deprecated here
    @interface UIAlertView : UIView
               ^
    1 warning generated.
    /Users/kingman/Documents/development/flutter/.pub-cache/hosted/pub.dartlang.org/qr_code_scanner-0.2.1/ios/Classes/QRView.swift:66:13: warning: 'UIAlertView' was deprecated in iOS 9.0: UIAlertView is deprecated. Use UIAlertController with a preferredStyle of UIAlertControllerStyleAlert instead
                UIAlertView(title: "Scanning Unavailable", message: "This app does not have permission to access the camera", delegate: nil, cancelButtonTitle: nil, otherButtonTitles: "Ok").show()
                ^
    /Users/kingman/Desktop/HLH/projects/ios/Pods/FirebaseMessaging/FirebaseMessaging/Sources/FIRMessagingPubSub.m:283:12: warning: parameter 'expression' not found in the function declaration [-Wdocumentation]
     *  @param expression The topic expression used to generate a pubsub topic
               ^~~~~~~~~~
    /Users/kingman/Desktop/HLH/projects/ios/Pods/FirebaseMessaging/FirebaseMessaging/Sources/FIRMessagingPubSub.m:283:12: note: did you mean 'topic'?
     *  @param expression The topic expression used to generate a pubsub topic
               ^~~~~~~~~~
               topic
    1 warning generated.
    /Users/kingman/Desktop/HLH/projects/ios/Pods/gRPC-C++/src/cpp/server/async_generic_service.cc:19:10: fatal error: 'grpcpp/generic/async_generic_service.h' file not found
    #include <grpcpp/generic/async_generic_service.h>
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/kingman/Desktop/HLH/projects/ios/Pods/gRPC-C++/src/cpp/server/async_generic_service.cc:19:10: note: did not find header 'generic/async_generic_service.h' in framework 'grpcpp' (loaded from '/Users/kingman/Desktop/HLH/projects/build/ios/Debug-dev-iphoneos/gRPC-C++')
    1 error generated.
    note: Using new build system
    note: Building targets in parallel
    note: Planning build
    note: Using build description from disk

Could not build the precompiled application for the device.

Error launching application on Kingman’s iPhone.

【问题讨论】：

重启你的机器，清理flutter项目，能否请你上传你的pod文件？

标签： ios flutter dart

【解决方案1】：

运行flutter clean 通常可以为我解决问题。您可以尝试的另一种方法是生成新的 ios 版本。您可以删除 Flutter 项目中的 /ios 文件夹并使用 flutter create --platforms=ios [PROJECT] 生成一个新文件夹

【讨论】：