小编Ami*_*imi的帖子

升级到 flutter 2.0.0 后，我无法再构建应用程序了。这是输出。我的问题是我大量使用库，其中很多都不是空安全的，我无法将所有依赖项升级到空安全模式。有没有人对此有任何建议？

Try calling using ?. instead.
    ).replaceFirst(r'$remainingCount', formatDecimal(remainingCount));
      ^^^^^^^^^^^^
../../flutter/flutter/.pub-cache/hosted/pub.dartlang.org/extended_image-1.6.0/lib/src/extended_image.dart:785:44: Error: No named parameter with the name 'nullOk'.
    _invertColors = MediaQuery.of(context, nullOk: true)?.invertColors ??
                                           ^^^^^^
../../flutter/flutter/packages/flutter/lib/src/widgets/media_query.dart:818:25: Context: Found this candidate, but the arguments don't match.
  static MediaQueryData of(BuildContext context) {

                        ^^
../../flutter/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.18.1/lib/src/picture_provider.dart:50:59: Error: No named parameter with the name 'nullOk'.
        context != null ? Localizations.localeOf(context, nullOk: true) : null,
                                                          ^^^^^^
../../flutter/flutter/packages/flutter/lib/src/widgets/localizations.dart:413:17: Context: Found this candidate, but the arguments don't match.
  static Locale localeOf(BuildContext context) {

                ^^^^^^^^

更新 …

我正在尝试发布APK,而我正在尝试生成签名APK我得到此错误

Error:Error: Permission name C2D_MESSAGE is not unique (appears in both com.company.myApp.permission.C2D_MESSAGE and com.company.myApp2.permission.C2D_MESSAGE) [UniquePermission]

这是我的清单文件:

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.company.myApp">

    <permission
        android:name="com.company.myApp.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />

    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true" />

    <supports-screens android:smallScreens="true" />
    <supports-screens android:normalScreens="true" />
    <supports-screens android:largeScreens="true" />
    <supports-screens android:xlargeScreens="true" />
    <supports-screens android:anyDensity="true" />

    <uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
    <uses-permission android:name="android.permission.WRITE_SETTINGS" />
    <uses-permission android:name="android.permission.WRITE_SECURE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
    <uses-permission android:name="android.permission.CHANGE_CONFIGURATION" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <!--<uses-permission android:name="android.permission.INTERNET" />-->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.GET_TASKS" …

我在签名和发布APK时遇到问题.我收到重复的zip条目警告和一个错误,这是代码:

Information:Gradle tasks [:app:assembleRelease]
Warning:can't write resource [META-INF/MANIFEST.MF] (Duplicate zip entry [gcm.jar:META-INF/MANIFEST.MF])
Warning:can't write resource [META-INF/MANIFEST.MF] (Duplicate zip entry [gson-2.2.4.jar:META-INF/MANIFEST.MF])
Warning:can't write resource [META-INF/MANIFEST.MF] (Duplicate zip entry [httpmime-4.2.2.jar:META-INF/MANIFEST.MF])
Warning:can't write resource [META-INF/MANIFEST.MF] (Duplicate zip entry [joda-time-2.1.jar:META-INF/MANIFEST.MF])
Warning:can't write resource [META-INF/LICENSE.txt] (Duplicate zip entry [joda-time-2.1.jar:META-INF/LICENSE.txt])
Warning:can't write resource [META-INF/NOTICE.txt] (Duplicate zip entry [joda-time-2.1.jar:META-INF/NOTICE.txt])
Warning:can't write resource [META-INF/MANIFEST.MF] (Duplicate zip entry [splunk-mint-4.2.1.jar:META-INF/MANIFEST.MF])
Warning:can't write resource [META-INF/MANIFEST.MF] (Duplicate zip entry [universal-image-loader-1.9.4.jar:META-INF/MANIFEST.MF])
Warning:can't write resource [META-INF/MANIFEST.MF] (Duplicate zip entry [classes.jar:META-INF/MANIFEST.MF])
Warning:can't write resource [META-INF/MANIFEST.MF] …

我想在 android studio 3.0 的一个项目中使用 Lombok，但我遇到了问题。注释工作正常并且没有任何错误。这是我在其中添加了 Lombok 的 Gradle 依赖项。

compileOnly "org.projectlombok:lombok:1.16.18"
annotationProcessor "org.projectlombok:lombok:1.16.18"

我也有问题Annotation Processors。
我已按照以下步骤操作：

• 我已经file>other settings>default settings启用了Annotation Processors
• 我有Invalidate Caches / Restart
• 突然，project settings设置Annotation Processors出现在Build, Execution, Deployment>Compiler以前不存在的菜单下Invalidating Cache，我检查了它的勾号。
• 我已经安装了 Lombok 插件

当 Android Studio 重新启动时，Annotation Processors设置消失，但插件没有显示任何错误。

做了这一切之后仍然不起作用。

import com.google.gson.annotations.SerializedName;

import lombok.Getter;

class UserModel {

    @SerializedName("uid")
    @Getter private String userId;


}

这就是我定义模型的方式，但无法从中获取 getUserId 。

今天,我得到了我的金丝雀的Android工作室的最新情况,我已经从3.0金丝雀9至3.0 beta 2版本更新我的Android工作室,并想升级从摇篮版本com.android.tools.build:gradle:3.0.0-alpha9来com.android.tools.build:gradle:3.0.0-beta2升级它,我得到这个错误后:

Error:Cause: java.lang.NullPointerException
at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:98)
at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:77)
at sun.nio.fs.WindowsPath.parse(WindowsPath.java:94)
at sun.nio.fs.WindowsFileSystem.getPath(WindowsFileSystem.java:255)
at java.nio.file.Paths.get(Paths.java:84)
at com.android.build.gradle.internal.scope.BuildOutput.getOutputPath(BuildOutput.java:222)
at com.android.build.gradle.internal.scope.BuildOutputs.lambda$load$2(BuildOutputs.java:243)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1376)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
at com.android.build.gradle.internal.scope.BuildOutputs.load(BuildOutputs.java:245)
at com.android.build.gradle.internal.scope.BuildOutputs.load(BuildOutputs.java:184)
at com.android.build.gradle.internal.scope.BuildOutputs.load(BuildOutputs.java:140)
at com.android.build.gradle.internal.ide.BuildOutputsSupplier.lambda$get$1(BuildOutputsSupplier.java:55)
at com.google.common.collect.ImmutableList.forEach(ImmutableList.java:397)
at com.android.build.gradle.internal.ide.BuildOutputsSupplier.get(BuildOutputsSupplier.java:50)
at com.android.build.gradle.internal.ide.BuildOutputsSupplier.get(BuildOutputsSupplier.java:35)
at com.android.build.gradle.internal.ide.AndroidArtifactImpl.getOutputs(AndroidArtifactImpl.java:134)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$ReflectionMethodInvoker.invoke(ProtocolToModelAdapter.java:592)
at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$AdaptingMethodInvoker.invoke(ProtocolToModelAdapter.java:397)
at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$PropertyCachingMethodInvoker.invoke(ProtocolToModelAdapter.java:625)
at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$SafeMethodInvoker.invoke(ProtocolToModelAdapter.java:647)
at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$SupportedPropertyInvoker.invoke(ProtocolToModelAdapter.java:670)
at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$InvocationHandlerImpl.invoke(ProtocolToModelAdapter.java:356)
at com.sun.proxy.$Proxy182.getOutputs(Unknown Source)
at com.android.tools.idea.gradle.project.model.ide.android.IdeAndroidArtifactImpl.<init>(IdeAndroidArtifactImpl.java:57)
at …