我在Android Studio中使用Flutter使用gradle编译时遇到以下错误：

Dex: Error converting bytecode to dex:
Cause: com.android.dex.DexException: Multiple dex files define Lcom/google/android/gms/internal/zzcew;
UNEXPECTED TOP-LEVEL EXCEPTION:
com.android.dex.DexException: Multiple dex files define Lcom/google/android/gms/internal/zzcew;

[... stacktrace omitted for brevity ...]

* What went wrong:
Execution failed for task ':app:transformDexArchiveWithDexMergerForDebug'.
> com.android.build.api.transform.TransformException: com.android.dex.DexException: Multiple dex files define Lcom/google/android/gms/internal/zzcew;

短版

仅在我添加了足够的依赖项时（如预期的那样），才会发生这种情况。我已经build.gradle按照说明（https://developer.android.com/studio/build/multidex.html）启用了multidex并在Android项目文件中添加了multidex依赖关系，但是不确定如何处理其中的步骤2为Flutter应用程序“为multidex配置您的应用程序”，或者是否忽略了该步骤是问题所在。

重新创建步骤：

1. File/New/New Flutter Project从工具栏中选择
2. 选择“ Flutter Application”
3. 包括Kotlin和Swift支持
4. 检查应用编译并运行
5. 在依赖项中添加以下内容pubspec.yaml：

        dependencies:
      flutter_google_place_picker: "^0.0.1"
      location: "^1.2.0"

1. Packages Get在Android Studio中点击或flutter packages get在项目目录中运行
2. 修改android/app/build.gradle以在适当的位置添加以下部分：

        dependencies {
      compile 'com.android.support:multidex:1.0.1'
    }
    android {
        defaultConfig {
            multiDexEnabled true
        }
    }

1. Run/Run从工具栏中选择

我尝试过的其他事情

1. 用build.gradle以下每个替换“ compile”依赖项：

        compile 'com.android.support:multidex:1.0.3'
    implementation 'com.android.support:multidex:1.0.1'
    implementation 'com.android.support:multidex:1.0.3'

1. 按照我的每个依赖项的multidex步骤进行操作；即修改其build.gradle文件，启用multidex并添加multidex依赖项。

2. build.gradle针对我的项目及其依赖项，将minSdkVersion修改为每个文件中的21和27，并为其启用multidex。

3. 为我的项目启用缩小功能。
4. 替换location: "^1.2.0"为geolocation: "^0.2.1"
5. 完全不启用multidex（即跳过重新创建的步骤7）。这将导致以下错误：

        FAILURE: Build failed with an exception.

    * What went wrong:
    Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.
    > java.lang.RuntimeException: java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex

颤振医生输出

    $ flutter doctor -v
    [√] Flutter (Channel beta, v0.2.8, on Microsoft Windows [Version 10.0.16299.371], locale en-GB)
        • Flutter version 0.2.8 at D:\flutter
        • Framework revision b397406561 (2 weeks ago), 2018-04-02 13:53:20 -0700
        • Engine revision c903c217a1
        • Dart version 2.0.0-dev.43.0.flutter-52afcba357

    [√] Android toolchain - develop for Android devices (Android SDK 27.0.3)
        • Android SDK at C:\Users\Dave\AppData\Local\Android\sdk
        • Android NDK location not configured (optional; useful for native profiling support)
        • Platform android-27, build-tools 27.0.3
        • Java binary at: D:\AndroidDev\jre\bin\java
        • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b02)
        • All Android licenses accepted.

    [√] Android Studio (version 3.1)
        • Android Studio at D:\AndroidDev
        • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b02)

    [√] Connected devices (1 available)
        • Android SDK built for x86 64 • emulator-5554 • android-x64 • Android 5.1.1 (API 22) (emulator)

    • No issues found!