关于flutter:Flutter-Notes-｜-记录基于-macOS-上使用-Flutter-过程中遇到的一些问题

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点滴积攒，追随鸡老大～

每当接触一个新货色，总是会遇到一些想喷人的问题，尽管在前期回过头想想，好简略，当初怎么就掉坑出不来了呢？

正好公司最近来个新我的项目，从 Flutter 进去到当初始终处于偷窥状态，恰好逢此机会，Flutter 搞起来～

记录本人 Flutter 应用过程遇到的一些问题，心愿能够帮忙和我一样刚入坑的小伙伴～

缓缓积攒吧～

千里之行; 始于足下，一起变得更好～

iTerm 中键入如下内容：

killall -9 dart

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':app:compileDebugJavaWithJavac'.
> Could not resolve all task dependencies for configuration ':app:debugCompileClasspath'.
   > Could not resolve io.flutter:flutter_embedding_debug:1.0.0-540786dd51f112885a89792d678296b95e6622e5.
     Required by:
         project :app
      > Skipped due to earlier error
      > Skipped due to earlier error
      > Skipped due to earlier error
   > Could not resolve io.flutter:arm64_v8a_debug:1.0.0-540786dd51f112885a89792d678296b95e6622e5.
     Required by:
         project :app
      > Skipped due to earlier error
      > Skipped due to earlier error
      > Skipped due to earlier error
   > Could not resolve io.flutter:x86_debug:1.0.0-540786dd51f112885a89792d678296b95e6622e5.
     Required by:
         project :app
      > Skipped due to earlier error
      > Skipped due to earlier error
      > Skipped due to earlier error
   > Could not resolve io.flutter:x86_64_debug:1.0.0-540786dd51f112885a89792d678296b95e6622e5.
     Required by:
         project :app
      > Skipped due to earlier error
      > Skipped due to earlier error
      > Skipped due to earlier error

* 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 2m 9s
Exception: Gradle task assembleDebug failed with exit code 1

掘友很贴心的指导我是 因为依赖没有下载下来导致的。

上面提供三种形式，多多尝试：

将 VPN 设置为全局代理模式；
替换 Android 依赖源为阿里云，感激逝水流光；

maven {url 'https://maven.aliyun.com/repository/googlemaven.aliyun.com/repository/goo...'}
maven {url 'https://maven.aliyun.com/repository/jcentermaven.aliyun.com/repository/jce...'}
maven {url 'http://maven.aliyun.com/nexus/content/groups/publicmaven.aliyun.com/nexus/content/...'}

尝试 flutter clean 清理下，感激爱 coding 真的太好了

3. If you’re running an application and need to access the binary messenger before `runApp()` has been called (for example, during plugin initialization), then you need to explicitly call the `WidgetsFlutterBinding.ensureInitialized()` first.

如日志提醒一样，在 runApp() 前调用 WidgetsFlutterBinding.ensureInitialized()。

4. [!] Invalid `Podfile` file: [!] Specifying multiple `post_install` hooks is unsupported..

Podfile 只能有一个 post_install，所以合并到一个外面就好，我这纯正野路子解决方案。

检测 main.dart 目录地址是否正确。

问题起因是对方提供我一张 jpg 的图片，我间接批改后缀为 png 了。

解决办法：在 app/build.gradle 中新增如下：

aaptOptions {cruncherEnabled = false}

作用就是告诉 Android Studio 别查看我图片的有效性了。

因为 Leader 批改了 iOS 名称，所以我在 Android Studio 中间接抉择运行 iOS 始终不胜利，因为它指标是将 Runner 运行指标设施上，然而理论却生成了 Leader 批改后的包名字，所以间接导致找不到 Runner。

批改形式：

将 Display Name 批改为 Runner 即可，如下图：

这个问题吧，我也有点懵，先放一下谬误日志：

════════ Exception caught by widgets library ═══════════════════════════════════════════════════════
The following assertion was thrown building Builder(dirty):
The builder for route "/actionDetailPage?loadUrl=https://guokr.com" returned null.

Route builders must never return null.
The relevant error-causing widget was: 
  MaterialApp file:///Users/heliquan/CodePro/FlutterPro/haozhuan_app/lib/main.dart:34:12
When the exception was thrown, this was the stack: 
#0      CupertinoPageRoute.buildPage.<anonymous closure> (package:flutter/src/cupertino/route.dart:260:9)
#1      CupertinoPageRoute.buildPage (package:flutter/src/cupertino/route.dart:266:6)
#2      _ModalScopeState.build.<anonymous closure> (package:flutter/src/widgets/routes.dart:804:43)
#3      Builder.build (package:flutter/src/widgets/basic.dart:6998:48)
#4      StatelessElement.build (package:flutter/src/widgets/framework.dart:4576:28)
...

这个问题我也比拟懵逼，跳转传递值，很 easy 的货色，而且我传递的是一个地址链接，又不是含有中文的货色。

But，死活不行，网上各种搜。

最初，想着要不然本义下吧。后果，好了。

NavigatorUtil.jumpFormRight(context,
                    '${Routes.actionDetailPage}?loadUrl=${Uri.encodeComponent(mActionList[index].url)}');

难道传递 URL 都不能间接传？

回头哪儿天试试。

日志如下：

/Users/HLQ/CodePro/FlutterPro/xxx_app/android/app/src/profile/AndroidManifest.xml Error:
        uses-sdk:minSdkVersion 17 cannot be smaller than version 19 declared in library [com.mob.push.plugins:oppo:2.1.0] /Users/HLQ/.gradle/caches/transforms-2/files-2.1/91fa5aa891331ae54500dada38fa5849/oppo-2.1.0/AndroidManifest.xml as the library might be using APIs not available in 17
        Suggestion: use a compatible library with a minSdk of at most 17,
                or increase this project's minSdk version to at least 19,
                or use tools:overrideLibrary="com.heytap.mcssdk" to force usage (may lead to runtime failures)

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processProfileManifest'.
> Manifest merger failed : uses-sdk:minSdkVersion 17 cannot be smaller than version 19 declared in library [com.mob.push.plugins:oppo:2.1.0] /Users/HLQ/.gradle/caches/transforms-2/files-2.1/91fa5aa891331ae54500dada38fa5849/oppo-2.1.0/AndroidManifest.xml as the library might be using APIs not available in 17
        Suggestion: use a compatible library with a minSdk of at most 17,
                or increase this project's minSdk version to at least 19,
                or use tools:overrideLibrary="com.heytap.mcssdk" to force usage (may lead to runtime failures)

* 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

我得解决方案是：

批改 build 文件中的 minSdk 改为 19，最初同步即可

日志如下：

[+44802 ms] FAILURE: Build failed with an exception.
[+4 ms] * What went wrong:
[ ] Failed to notify build listener.
[ ] > GC overhead limit exceeded
[ ] * 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 1m 1s

批改计划如下：

gradle.properties：

org.gradle.jvmargs=-Xmx4096M

app build 中增加：

dexOptions {javaMaxHeapSize "4g"}

Waiting for another flutter command to release the startup lock
掘金

正文完

flutter

发表至： flutter

2020-08-21

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关于flutter:Flutter-Notes-｜-记录基于-macOS-上使用-Flutter-过程中遇到的一些问题

前言

问题收集

1. Waiting for another flutter command to release the startup lock…

2. Could not determine the dependencies of task ‘:app:compileDebugJavaWithJavac’.

3. If you’re running an application and need to access the binary messenger before `runApp()` has been called (for example, during plugin initialization), then you need to explicitly call the `WidgetsFlutterBinding.ensureInitialized()` first.

4. [!] Invalid `Podfile` file: [!] Specifying multiple `post_install` hooks is unsupported..

5. Error running ‘splash.dart’: Entrypoint doesn’t contain a main function

6.AAPT: error: failed to read PNG signature: file does not start with PNG signature.

7.Could not find the built application bundle at build/ios/iphoneos/Runner.app.

8.The builder for route “/actionDetailPage?loadUrl=https://guokr.com” returned null.

9. uses-sdk:minSdkVersion 17 cannot be smaller than version 19 declared in library（2020-07-12）

11. GC overhead limit exceeded（2020-07-13）

Thanks

站内搜索

关于flutter:Flutter-Notes-｜-记录基于-macOS-上使用-Flutter-过程中遇到的一些问题

前言

问题收集

1. Waiting for another flutter command to release the startup lock…

2. Could not determine the dependencies of task ‘:app:compileDebugJavaWithJavac’.

3. If you’re running an application and need to access the binary messenger before runApp() has been called (for example, during plugin initialization), then you need to explicitly call the WidgetsFlutterBinding.ensureInitialized() first.

4. [!] Invalid Podfile file: [!] Specifying multiple post_install hooks is unsupported..

5. Error running ‘splash.dart’: Entrypoint doesn’t contain a main function

6.AAPT: error: failed to read PNG signature: file does not start with PNG signature.

7.Could not find the built application bundle at build/ios/iphoneos/Runner.app.

8.The builder for route “/actionDetailPage?loadUrl=https://guokr.com” returned null.

9. uses-sdk:minSdkVersion 17 cannot be smaller than version 19 declared in library（2020-07-12）

11. GC overhead limit exceeded（2020-07-13）

Thanks

站内搜索

3. If you’re running an application and need to access the binary messenger before `runApp()` has been called (for example, during plugin initialization), then you need to explicitly call the `WidgetsFlutterBinding.ensureInitialized()` first.

4. [!] Invalid `Podfile` file: [!] Specifying multiple `post_install` hooks is unsupported..